.Please refer to RP-234018 for detailed scope of the WI.
R1-2403665 Session notes for 9.8 (Study on channel modelling enhancements for 7-24GHz for NR) Ad-Hoc Chair (CMCC)
Friday decision: The session notes are endorsed and contents reflected below.
[116bis-R19-7-24GHz] – Daewon (Intel)
Email discussion on channel modelling for 7-24GHz
- To be used for sharing updates on online/offline schedule, details on what is to be discussed in online/offline sessions, tdoc number of the moderator summary for online session, etc
R1-2402128 Work Plan for Study on 7-24 GHz Channel Modeling Enhancements Intel Corporation, ZTE
R1-2402619 Skeleton of the CR for TR 38.901 ZTE,Intel Corporation
R1-2402613 Discussion on validation of channel model Ericsson
· Proposal 1: Consider that the presented measurements validate the existing UMa and UMi path loss models over the frequency range 0.8-37 GHz.
· Proposal 2: Consider adding and parameterizing a Suburban Macro (SMa) scenario using these measurements as input to the path loss modeling.
· Proposal 3: Consider the delay spread model in the TR 38.901 UMa scenario to be validated at 3.5 GHz.
· Proposal 4: Consider the elevation angular spread (ZSD) model in the TR 38.901 UMa scenario at 3.5 GHz to be validated.
· Proposal 5: Consider reducing the azimuth angular spread (ASD) significantly in the TR 38.901 UMa scenario.
· Proposal 6: Introduce a random variability of the co- and cross polar powers in the TR 38.901 model, such as an i.i.d zero-mean Gaussian with 3 dB standard deviation.
Decision: The document is noted.
R1-2403208 Channel Model Validation of TR38.901 for 7-24 GHz Qualcomm Incorporated
· Proposal 1: Generalize the pathloss models for UMa in TR 38.901 to accommodate different base station heights. Pathloss model in TR 36.873 can be used as a starting point.
· Proposal 2: Further study penetration losses incurred due to IRR glass in FR3.
Decision: The document is noted.
R1-2402009 Considerations on the 7-24 GHz channel model validation Huawei, HiSilicon, Tongji University
R1-2402090 On Channel Model Validation of TR38.901 for 7-24GHz InterDigital, Inc.
R1-2402129 Discussion on channel modeling verification for 7-24 GHz Intel Corporation
R1-2402256 Views on channel model validation of TR38.901 for 7-24GHz vivo
R1-2402397 Discussion on channel model validation of TR38.901 for 7-24GHz CATT
R1-2402407 Channel Model Validation of TR 38.901 for 7-24 GHz SHARP, NYU WIRLESS
R1-2402480 Discussion on channel model validation of TR38.901 for 7-24GHz Samsung
R1-2402601 Discussion on Channel model validation of TR38.901 for 7-24GHz Nokia
R1-2402620 Discussion on the channel model validation ZTE
R1-2402853 Channel model validation of TR 38901 for 7-24 GHz NVIDIA
R1-2402899 On Channel Model Validation of TR 38.901 for 7-24 GHz Apple
R1-2403144 Discussion on Validation of the Channel Model in 38901 AT&T
R1-2403261 Changes to TR 38 901 Spark NZ Ltd
R1-2403267 Discussion on channel model validation of TR38.901 for 7-24GHz LG Electronics
R1-2403280 Discussion on channel model validation of TR38.901 for 7-24GHz BUPT, Spark NZ Ltd
R1-2403441 Summary of issues for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
R1-2403442 Summary #1 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
R1-2403443 Summary #2 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
R1-2403442 Summary #1 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Tuesday session
Conclusion
· To provide measurement data, and/or simulation results, and/or available publications with measurement information for frequencies 7 to 24 GHz to validate/update the channel model.
· For frequency continuity of the channel models, Measurement information outside 7 to 24 GHz is also encouraged.
R1-2403443 Summary #2 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Wednesday session
Agreement
The following provides list of modelling parameters for 7 – 24 GHz frequencies that could be further studied for validation. The parameters listed are starting point for further discussions and does not imply the parameters require validation nor imply parameters require updates for 7 – 24 GHz frequencies.
Conclusion
RAN1 to continue discussion on the need for new modelling parameters/scenarios and modelling procedure. The following modelling parameters/aspects for 7 – 24 GHz frequencies that are currently not available in TR38.901 have been identified by companies in RAN1#116bis. At least the following is for further study, but does not imply parameters/scenarios and modelling procedure are required for 7 – 24 GHz frequencies.
R1-2403630 Summary #3 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Thursday session
Conclusion
Final summary in R1-2403631.
Including near-field propagation and spatial non-stationarity
R1-2402091 On Channel Model Extension of TR38.901 for 7-24GHz InterDigital, Inc.
· Proposal 1: Support a single channel model where features of both FF and NF are captured.
· Proposal 2: Support stochastic-based channel modeling for modeling NF in FR3.
· Proposal 3: For Step 3, pathloss model in NF needs to be studied.
· Proposal 4: Revisit delay information generation in Step 5 to account for cluster location and cluster delay profile.
· Proposal 5: TR 38.901 cluster shadowing power in Step 6 needs to be studied for NF channel modelling.
· Proposal 6: TR 38.901 arrival angles and departure angles for both azimuth and elevation in Step 7 needs to be studied for NF channel modelling.
· Proposal 7: TR 38.901 channel coefficients generation in Step 11 needs to be studied for NF channel modelling.
· Proposal 8: Support modification of formulation of channel model NLOS Eq. (7.5.28) and LOS Eq. (7.5.29) in 38.901 to assure consistency between near-field and far-field.
· Proposal 9: To manage the complexity of NF channel coefficient generation, study and evaluate feasibility and validity of the UPD region.
Decision: The document is noted.
R1-2402257 Views on channel model adaptation/extension of TR38.901 for 7-24GHz vivo
Proposal 1: RAN1 studies on a channel model, in consideration of the work plan with Part-1, Par-2, part-3 and Part-4, as a starting point.
Proposal 2: 3GPP channel modeling should focus on SPD antenna other than CAP antenna.
Proposal 3: RAN1 should not consider both Fresnel and Rayleigh distances for near-field and far-field boundaries in channel modeling at least for 7-24 GHz.
Proposal 4: The near-filed study in RAN1 focuses on the indoor deployment scenario.
Proposal 5: RAN1 considers, the radiated field received in an observation point always behaves as the far-field from the perspective of each element, while the radiated field behaves as either the near-field or the far-field from the perspective of overall array antenna.
Proposal 6: The channel links paired by different transmit antenna and receive antenna elements should be independently modeled regardless of near-field and far-field regions.
Proposal 7: RAN1 reuses the channel model defined in TR38.901, by considering a
unified distance and
replacing .
Proposal 8: RAN1 does not consider the consistency between near-field and far-field in channel modeling.
Proposal 9: RAN1 validates the approximation of the distance between the transmit
element and the receive element from the amplitude
perspective in near-filed, i.e., 
.
Proposal 10: In channel modeling at least for 7-24 GHz, the study of spatial non-stationarity is mainly focused on the TRP side.
Proposal 11: The modeling of spatial non-stationarity should be considered in both LOS ray and NLOS cluster.
Proposal 12: RAN1 studies a matrix with 0 or 1 of element to model the visibility of cluster or ray towards the entire array, as a starting point.
Proposal 13: RAN1 studies the impact on the cross-polarization in near-filed.
Proposal 14: RAN1 design a unified channel model for far- and near-field regions.
Proposal 15: In channel modeling at least for 7-24 GHz, the channel coefficient generation procedure in Figure 11 can be considered as a starting point.
Proposal 16: RAN1 designs a method to explicitly determine the location of scatterers, and Option 3 can be a starting point.
Proposal 17: In channel modeling at least for 7-24 GHz, the concept of VR could be used to characterize the spatial non-stationarity property, in consideration of issues on VR shape/size and VR distribution.
Proposal 18: RAN1 studies how to differentiate the angles of arrival and departure for both azimuth and elevation per ray between each paired transmit and receive antenna elements.
Proposal 19: To differentiate the angles of arrival and departure, the mechanism of the obtained scatterer location can be considered as a starting point.
Proposal 20: In order to model the non-linear relationship between the positions of the antenna elements and the geometry-type phase in near-field, RAN1 studies,
replaces the formula 
of the channel modeling
defined in TR 38.901.
is the distance between the
reference point in the transmitter and the reference point in the
receiver, 
is the distance between the
transmit antenna element 
and the receive antenna
element 
.
replaces the formula of 
in the channel modeling
defined in TR 38.901.
replaces the formula 
of the channel modeling
defined in TR 38.901.
is the distance between the
reference point in the transmitter and the first-bounce scatterer, 
is the distance between the
transmit antenna element and the first-bounce
scatterer, and 
is the distance between the
reference point in the receiver and the last-bounce scatterer, 
is the distance between the
receive antenna element and the last-bounce
scatterer.Proposal 21: RAN1 studies the impact on spatial consistency modeling in near-field.
Decision: The document is noted.
R1-2402010 Considerations on the 7-24 GHz channel model extension Huawei, HiSilicon, Tongji University
R1-2402130 Discussion on channel model adaptation/extension Intel Corporation
R1-2402398 Discussion on channel model adaptation/extension of TR38.901 for 7-24GHz CATT
R1-2402481 Discussion on channel model adaptation/extension of TR38.901 for 7-24GHz Samsung
R1-2402500 Discussion of FR3 channel model Lenovo
R1-2402602 Discussion on Channel model adaptation/extension of TR38.901 for 7-24GHz Nokia
R1-2402614 Discussion on adaptation and extension of channel model Ericsson
R1-2402621 Discussion on the channel model adaptation and extension ZTE
R1-2402854 Channel model adaptation of TR 38901 for 7-24 GHz NVIDIA
R1-2402900 On Channel Model Adaptation/Extension of TR 38.901 for 7-24 GHz Apple
R1-2402938 Discussion on channel modelling enhancements for 7-24GHz for NR MediaTek
R1-2403066 Channel model adaptation/extension of TR38.901 for 7-24 GHz CEWiT
R1-2403086 Views on Channel Model Adaption/Extension of TR 38.901 for 7-24 GHz SHARP
R1-2403209 Channel Model Adaptation/Extension of TR38.901 for 7-24GHz Qualcomm Incorporated
R1-2403268 Discussion on channel modelling adaptation/extension for 7-24GHz LG Electronics
R1-2403285 Discussion on modeling near-field propagation and spatial non-stationarity in TR38.901 for 7-24GHz BUPT, CMCC
R1-2403366 Channel model adaptation/extension of TR38.901 for 7-24 GHz Keysight Technologies UK Ltd
R1-2403541 Summary#1 of channel model adaptation and extension Moderator (ZTE)
R1-2403541 Summary#1 of channel model adaptation and extension Moderator (ZTE)
From Tuesday session
Agreement
The antenna array is assumed for the near-field study.
Agreement
For the study of near-field channel modelling, at least following aspects should be considered:
· Whether/How to define the near-field region.
· The parameters variation for each ray/cluster across different antenna element pairs.
R1-2403608 Summary#2 of channel model adaptation and extension Moderator (ZTE)
From Wednesday session
Agreement
The following scenarios defined in TR38.901 should be considered for the study/modelling of near-field.
· UMa,UMi, Indoor office and Indoor factory
· FFS: RMa and other new scenarios
Agreement
For the assumption on the aperture size of antenna array, the following is considered as reference for channel model study.
· up to [TBD] m, or [TBD] lambda for UMi
· up to [TBD] m, or [TBD] lambda for UMa
· up to [TBD] m, or [ TBD] lambda for Indoor office
· up to [TBD] m, or [TBD] lambda for Indoor factory
Note (apart from agreement): Companies are encouraged to provide the value in RAN1#116-bis.
R1-2403609 Summary#3 of channel model adaptation and extension Moderator (ZTE)
From Thursday session
Agreement
For the near-field channel model:
· The impact of the assumption of wavefront is only considered from the perspective of antenna array.
· The near field for each element within the antenna array is not considered in this SI.
Agreement
For near-field channel model, RAN1 strives to design a unified model to explicitly reflect the new properties of near- and existing properties of far-field under the structure of existing stochastic model TR 38.901.
· FFS: whether the same or different implementations, e.g., procedures/equations, are used for near- and far-field channel realization
Agreement
The near- or far-field condition should be studied for the direct path and non-direct paths between BS and UE.
Agreement
For near-field channel, if necessary, to model the following antenna element-wise channel parameters of direct path between TRP and UE,
· Angular domain parameters (i.e., AoA, AoD, ZoA, ZoD), Delay, initial phase, Doppler shift, Amplitude
· FFS: Impacts on the polarization
The following options are considered:
· Option-1: Determined by the locations of both TRP and UE.
· Option-2: Determined by the antenna element locations of both TRP and UE
Agreement
The following scenarios defined in TR38.901 should be considered for studying/modelling of spatial non-stationarity
· UMi, UMa, Indoor office and Indoor factory
· FFS: RMa and other new scenarios
Agreement
For the modelling of spatial non-stationarity, at least the following options can be studied to identify the impacted ray/cluster and element-pair link:
· Option 1: Introducing per ray/cluster the visible probability, or visibility region for set of antenna element
· Option 2: Introducing the physical blocker to emulate the blockage impact on the link for each element-pair
· Note: The consistency across antenna elements and across clusters should be guaranteed.
Final summary in R1-2403718.
Please refer to RP-234018 for detailed scope of the WI.
R1-2405698 Session notes for 9.8 (Study on channel modelling enhancements for 7-24GHz for NR) Ad-Hoc Chair (CMCC)
Friday decision: The session notes are endorsed and contents reflected below.
[117-R19-7-24GHz] – Daewon (Intel)
Email discussion on channel modelling for 7-24GHz
- To be used for sharing updates on online/offline schedule, details on what is to be discussed in online/offline sessions, tdoc number of the moderator summary for online session, etc
R1-2403969 Template for Data Source Descriptions Intel Corporation, ZTE
From Wednesday session
Agreement
To check and review the following results and measurement data provided in RAN1 #117 and RAN1#116bis for further discussion in next RAN1 meeting. R1-2405646 contains the list of data sources for the results and measurements provided in RAN1 #117.
R1-2405646 Data source descriptions for 7 – 24 GHz SI Moderator (Intel Corporation)
R1-2403856 Discussion on Channel Model Validation of TR38.901 for FR3 InterDigital, Inc.
R1-2405339 Views on Channel model validation of TR38.901 for 7-24GHz SHARP (rev of R1-2403878)
R1-2405339 Views on Channel model validation of TR38.901 for 7-24GHz Sharp, NYU WIRELESS
R1-2403907 Discussion on channel model validation of TR38.901 for 7-24GHz LG Electronics
R1-2403925 Considerations on the 7-24GHz channel model validation Huawei, HiSilicon
R1-2403962 Discussion on channel modeling verification for 7-24 GHz Intel Corporation
R1-2403991 Discussion on validation of channel model Ericsson
R1-2403996 Discussion on Channel model validation of TR38.901 for 7-24GHz Nokia, Anritsu
R1-2404129 Discussion on channel model validation of TR38.901 for 7 - 24 GHz Samsung
R1-2404191 Views on channel model validation of TR38.901 for 7-24GHz vivo
R1-2404212 Discussion on the channel model validation ZTE
R1-2404304 Initial Measurement Results for Channel Model Validation Apple
R1-2404331 Discussion on channel model validation of TR38.901 for 7-24GHz BUPT, Spark NZ Ltd, vivo
R1-2404415 On channel model validation of TR38.901 for 7-24GHz CATT
R1-2404514 Discussion on channel model validation of TR38.901 for 7-24GHz Sony
R1-2404521 Discussion on validation of channel model Vodafone, Ericsson
R1-2404543 Channel model validation of TR 38901 for 7-24 GHz NVIDIA
R1-2404925 Discussion on Validation of the Channel Model in 38901 AT&T
R1-2405169 Channel Model Validation of TR38.901 for 7-24 GHz Qualcomm Incorporated
R1-2405360 Summary of issues for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
Presented in Monday session
R1-2405361 Summary #1 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Tuesday session
Observation
· Some companies provided information that sub-urban deployments cannot be represented by existing deployments in TR38.901 (such as UMi, UMa, RMa).
The following parameters are used as a starting point for aligning companies understanding of channel model parameters related to suburban use cases.
R1-2405362 Summary #2 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Wednesday session
Conclusion
R1-2405588 Summary #3 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Thursday session
Agreement
Agreement
Agreement
Agreement
Agreement
Agreement
Final summary in R1-2405589.
Including near-field propagation and spatial non-stationarity
R1-2403857 Discussion on Channel Model Extension of TR38.901 for FR3 InterDigital, Inc.
R1-2403908 Discussion on channel modelling adaptation/extension for 7-24GHz LG Electronics
R1-2403926 Considerations on the 7-24GHz channel model extension Huawei, HiSilicon
R1-2403963 Discussion on channel model adaptation/extension Intel Corporation
R1-2403992 Discussion on adaptation and extension of channel model Ericsson
R1-2403997 Discussion on Channel model adaptation/extension of TR38.901 for 7-24GHz Nokia
R1-2404130 Discussion on channel model adaptation/extension of TR38.901 for 7 - 24 GHz Samsung
R1-2404192 Views on channel model adaptation/extension of TR38.901 for 7-24GHz vivo
R1-2404213 Discussion on the channel model adaptation and extension ZTE
R1-2404305 Channel Model Adaptation and Extension of TR38.901 for 7-24 GHz Apple
R1-2404330 Discussion on modeling near-field propagation and spatial non-stationarity in TR38.901 for 7-24GHz BUPT, CMCC, vivo
R1-2404340 Discussion of FR3 channel model Lenovo
R1-2404416 On channel model adaptation/extension of TR38.901 for 7-24GHz CATT
R1-2404437 Discussion on channel modeling for single road bridge (SRB) scenario China Telecom, BJTU
R1-2404544 Channel model adaptation of TR 38901 for 7-24 GHz NVIDIA
R1-2405082 Discussion on channel modelling enhancements for 7-24GHz for NR MediaTek Inc.
R1-2405170 Channel Model Adaptation/Extension of TR38.901 for 7-24GHz Qualcomm Incorporated
R1-2405250 Channel model adaptation/extension of TR38.901 for 7-24 GHz CEWiT
R1-2405443 Summary#1 of channel model adaptation and extension Moderator (ZTE)
Presented in Monday session
R1-2405444 Summary#2 of channel model adaptation and extension Moderator (ZTE)
From Tuesday session
Agreement (modified in Wednesday session – see below)
For the assumption on the aperture size of antenna array, the following is considered for near-field and spatial non-stationarity channel model study, e.g., simulation/measurement and calibration:
· Up to 1.5 m for UMa with maximum antenna elements in the array is [5k] for single Polarization.
· Up to [0.71] m for UMi with maximum antenna elements in the array is [1.25k] for single Polarization.
· Up to [0.71] m for Indoor factory with maximum antenna elements in the array is [1.25k] for single Polarization.
· Up to [0.5] m for Indoor office with maximum antenna elements in the array is [625] for single Polarization.
R1-2405545 Summary#3 of channel model adaptation and extension Moderator (ZTE)
From Wednesday session
Agreement (Tuesday agreement is amended as shown in red)
For the assumption on the aperture size of antenna array, the following is considered for near-field and spatial non-stationarity channel model study, e.g., simulation/measurement and calibration:
· Up to 1.5 m for UMa with maximum antenna elements in the array is [5k] for single Polarization.
· Up to 1 m for UMi with maximum antenna elements in the array is [2.22k] for single Polarization.
· Up to [0.71] m for Indoor factory with maximum antenna elements in the array is [1.12k] for single Polarization.
· Up to [0.25 (for rectangular antenna array), 0.5 (for linear antenna array)] m for Indoor office with maximum antenna elements in the array is [138, 24] for single Polarization, respectively.
Working Assumption
For the near-field channel modeling, no changes are expected on both value and parameter generation procedure of at least following large-scale parameters in existing TR 38.901:
· Pathloss model, SF, LOS probability
· FFS:DS, ASA, ASD, ZSA, ZSD, K factor
Agreement
For near-field channel, if necessary, to model the following antenna element-wise channel parameters of direct path between TRP and UE,
· Phase
with Option-2 “Determined by the antenna element locations of both TRP and UE”.
R1-2405546 Summary#4 of channel model adaptation and extension Moderator (ZTE)
From Thursday session
Agreement
For near-field channel, if necessary, to model the following antenna element-wise channel parameters of non-direct path between TRP and UE,
The following options are considered:
§ FFS: How to obtain the distance.
§ FFS: Other parameters.
Agreement
For the modelling of spatial non-stationarity, if necessary, the variation (e.g., reduction) of power for the impacted ray/cluster within the element-pair link should be modelled.
· FFS: The value for power variation
· FFS: Impacts on the phase
Agreement
For the modelling of spatial non-stationarity, if necessary, if visible probability (VP) or visibility region (VR) is adopted, at least the following aspects should be considered for definition of VR/VP:
· Granularity of visible probability or visibility region (e.g., per cluster or per ray)
· Determination of visible probability (e.g., distribution) or visibility region (e.g., size, location)
Agreement
For the modelling of spatial non-stationarity, if necessary, if physical blocker-based approach is adopted, the following aspects should be considered for definition of blocker:
· Blocker size/type:
o FFS: Additional blocker size/type compared to the Table 7.6.4.2-5 in TR 38.901.
o FFS: Different blocker sizes/types are considered to emulate the antenna element-wise blockage effect at the BS and UE side
· Blocker location, e.g. distribution of the blocker, relative distance between blocker and BS or UE
· FFS: Number of physical blockers to be considered.
Agreement
To align the understanding of the terminology for channel model study, the following figures are considered as the reference:
· For non-direct path:
· For direct path:
Conclusion
For near-field channel, no changes are expected on the following parameters for direct path.
· Amplitude, polarization matrix
Please refer to RP-234018 for detailed scope of the WI.
R1-2407481 Session notes for 9.8 (Study on channel modelling enhancements for 7-24GHz for NR) Ad-Hoc Chair (CMCC)
Friday decision: The session notes are endorsed and contents reflected below.
[118-R19-7-24GHz] – Daewon (Intel)
Email discussion on channel modelling for 7-24GHz
- To be used for sharing updates on online/offline schedule, details on what is to be discussed in online/offline sessions, tdoc number of the moderator summary for online session, etc
From Friday session
R1-2407251 Data source descriptions for 7 – 24 GHz SI Moderator (Intel Corporation)
Agreement
To check and review the results and measurement data provided in RAN1 #118 (R1-2407251) for further discussion in next RAN1 meeting. R1-2407251 contains the list of data sources for the results and measurements provided in RAN1 #118, RAN1 #117, and RAN1 #116-bis.
R1-2405865 Considerations on the 7-24GHz channel model validation Huawei, HiSilicon
R1-2405884 On Angle Scaling for MIMO CDL Channel InterDigital, Inc.
R1-2405895 Channel Model Validation of TR 38.901 for 7-24 GHz Sharp
R1-2406007 Discussion on channel modeling verification for 7-24 GHz Intel Corporation
R1-2406128 Discussion on the channel model validation ZTE Corporation, Sanechips
R1-2406139 Discussion on Channel model validation of TR38.901 for 7-24GHz Nokia
R1-2406198 Views on channel model validation of TR38.901 for 7-24GHz vivo
R1-2406252 Discussion on channel model validation for 7~24GHz OPPO
R1-2406384 Views on channel model validation of TR38.901 for 7-24GHz CATT
R1-2406393 New measurement results for TR38.901 channel model validation and adaptation/extension consideration Keysight Technologies UK Ltd
R1-2406485 Further discussion on channel model validation of TR38.901 for 7-24 GHz Sony
R1-2406490 Channel model validation of TR 38901 for 7-24 GHz NVIDIA
R1-2406666 Discussion on channel model validation of TR38.901 for 7 - 24 GHz Samsung
R1-2406717 Discussion on validation of channel model Ericsson
R1-2406744 Discussion on channel model validation of TR38.901 for 7-24GHz BUPT, Spark NZ Ltd
R1-2406858 Discussion on validation of channel model Apple
R1-2406869 Discussion on Validation of the Channel Model in 38901 AT&T
R1-2406946 Discussion on channel model validation for 7-24 GHz NTT DOCOMO, INC.
R1-2407045 Channel Model Validation of TR38.901 for 7-24 GHz Qualcomm Incorporated
R1-2407106 Measurements of the angular spread in a suburban macrocell Vodafone, Ericsson
R1-2407252 Summary of issues for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
R1-2407253 Summary #1 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Tuesday session
Agreement
R1-2407254 Summary #2 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Wednesday session
Agreement
Agreement
R1-2407255 Summary #3 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Thursday session
Observation
Conclusion
Continue study on penetration loss at least for the wood, concrete and IRR glass penetration loss and provide details of experimental setup used for penetration loss measurements.
Observation
Conclusion
Continue study on at least pathloss for the following applicable scenarios, UMa LOS/NLOS.
Observation
Conclusion
Continue study on at least delay spread for applicable scenarios, including any frequency dependency analysis of delay spread.
Companies are encouraged to provide methodology of frequency dependence analysis of delay spread, if performed.
Observation
Observation
Conclusion
Observation
where ICP is the intra cluster power ratio.
Conclusion
To potentially reflect the channel angular domain sparsity, continue study of unequal intra-cluster power distribution for applicable scenarios.
R1-2407467 Summary #4 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Friday session
Conclusion
· Continue study on angular spread for applicable scenarios. The following are preliminary examples for identified scenarios:
|
Scenario |
InH @10 GHz |
UMi @10 GHz |
UMa @13 GHz |
||||
|
LOS |
NLOS |
LOS |
NLOS |
LOS |
NLOS |
||
|
ASD lgASD=log10(ASD/1°) |
|
1.21 |
1.27 |
1.04 |
1.14 |
1.08 |
1.25 |
|
|
0.18 |
0.14 |
0.2 |
0.07 |
0.21 |
0.3 |
|
|
ASA lgASA=log10(ASA/1°) |
|
1.29 |
1.5 |
1.19 |
1.37 |
|
|
|
|
0.13 |
0.23 |
0.13 |
0.08 |
|
|
|
|
Scenario |
InH @10.1 GHz |
UMi @10.1 GHz |
UMi @ 10GHz |
||||
|
LOS |
NLOS |
LOS |
NLOS |
LOS |
NLOS |
||
|
ASD |
|
8.3 |
24.0 |
16.6 |
22.8 |
36.7 |
17.4 |
|
|
4.8 |
13.7 |
15.8 |
19.3 |
20.4 |
24.0 |
|
|
ASA |
|
28.4 |
47.6 |
32.8 |
60.2 |
19.2 |
31.7 |
|
|
7.3 |
20.6 |
16.0 |
12.6 |
11.0 |
9.3 |
|
|
ZSD |
|
10.5 |
6.6 |
6.8 |
7.9 |
|
|
|
|
8.6 |
10.5 |
2.8 |
1.3 |
|
|
|
|
ZSA |
|
4.4 |
8.3 |
13.5 |
12.6 |
|
|
|
|
1.8 |
6.2 |
3.2 |
3.8 |
|
|
|
|
Scenarios |
UMa @ 3.5 GHz, 13 GHz, 28 GHz |
|||
|
LOS |
NLOS |
O2I |
||
|
ASD lgASD=log10(ASD/1°) |
µlgASD |
0.39 + 0.1114 log10(fc) |
0.83 - 0.1144 log10(fc) |
0.58 |
|
σlgASD |
0.4 |
0.7 |
0.7 |
|
|
Cluster ASD ( |
1.5 |
1.5 |
1.5 |
|
|
Scenario |
InH @15 GHz |
||
|
LOS |
NLOS |
||
|
ASA lgASA=log10(ASA/1°) |
|
1.57 |
1.78 |
|
|
0.15 |
0.15 |
|
|
ZSA lgASA=log10(ZSA/1°) |
|
0.94 |
0.94 |
|
|
0.05 |
0.06 |
|
|
Scenario |
UMa @6.5 GHz |
||
|
LOS |
NLOS |
||
|
ASD lgASD=log10(ASD/1°) |
|
0.82 |
1.26 |
|
|
0.28 |
0.27 |
|
|
AOA spread (ASA) lgASA=log10(ASA/1°) |
|
1.67 |
1.72 |
|
|
0.19 |
0.15 |
|
Observation
Observation
Conclusion
Observation
Conclusion
Observation:
Conclusion
Observation:
Conclusion
, (7.7-5)
,
, and
where s is a scale factor to achieve desired angular spread.
Conclusion
· Continue study on handling of channel delays between different UE-TRP links. The following are examples of how absolute delays between different UE-TRP link may be applied in 38.901 provided by companies.
o Example 1) introduce a new correlation type called “physically consistent” that takes the individual UE-TRP distances into account when generating the link-specific delays.
o Example 2) Reuse absolute delay modelling in section 7.6.9 in TR 38.901 with extension for other scenarios as follows:
Table 7.6.9-1: Parameters for the absolute time of arrival model
|
Scenarios |
InF-SL, InF-DL |
InF-SH, InF-DH |
UMi |
UMa |
|
|
|
|
-7.5 |
-7.5 |
-7 |
-6.8 |
|
|
0.4 |
0.4 |
0.4 |
0.6 |
|
|
Correlation distance in the horizontal plane [m] |
6 |
11 |
15 |
50 |
|
Agreement
The following assumptions are modeling parameters related to suburban use case. For aspects with multiple options, FFS which option(s) to support.
-1) m for indoor, where 
is the floor and 
is uniform (1, 2) for residential buildings or is uniform (1,
5) for commercial buildings. (framework in 36.873 for UMa with changes to
distribution of 
(number of floors).)
Conclusion
Study at least the following channel modelling aspects of suburban use case. The sub-bullets describing the detailed equations of the modelling aspect are examples for consideration:
|
Scenarios |
SMa |
|||
|
LOS |
NLOS |
O2I |
||
|
AOD spread (ASD) lgASD=log10(ASD/1°) |
µlgASD |
0.55 |
0.55 |
0.55 |
|
σlgASD |
0.25 |
0.25 |
0.25 |
|
|
Cluster
ASD ( |
1.5 |
1.5 |
1.5 |
|
|
Scenarios |
SMa |
|||
|
LOS |
NLOS |
O2I |
||
|
ZOD spread (ZSD) lgZSD=log10(ZSD/1°) |
µlgZSD |
0.55 |
0.55 |
0.55 |
|
σlgZSD |
0.25 |
0.25 |
0.25 |
|
Final summary in R1-2407494.
Including near-field propagation and spatial non-stationarity
R1-2405866 Considerations on the 7-24GHz channel model extension Huawei, HiSilicon
R1-2405885 On Channel Model Extension for FR3 InterDigital, Inc.
R1-2407201 Discussion on channel model adaptation/extension Intel Corporation (rev of R1-2406008)
R1-2406062 Discussion on channel modelling adaptation/extension for 7-24GHz LG Electronics
R1-2406129 Discussion on the channel model adaptation and extension ZTE Corporation, Sanechips
R1-2406140 Discussion on Channel model adaptation/extension of TR38.901 for 7-24GHz Nokia
R1-2406199 Views on channel model adaptation/extension of TR38.901 for 7-24GHz vivo
R1-2406253 Discussion on channel model adaptation and extension OPPO
R1-2406385 Views on channel model adaptation/extension of TR38.901 for 7-24GHz CATT
R1-2406491 Channel model adaptation of TR 38901 for 7-24 GHz NVIDIA
R1-2406518 Discussion on channel model adaptation/extension for 7-24 GHz Fujitsu
R1-2406667 Discussion on channel model adaptation/extension of TR38.901 for 7 - 24 GHz Samsung
R1-2406742 Discussion on adaptation and extension of channel model Ericsson
R1-2406743 Discussion on near-field propagation and spatial non-stationarity BUPT, CMCC
R1-2406766 Discussion on channel modelling enhancements for 7-24GHz for NR MediaTek Inc.
R1-2406859 Channel Model Adaptation and Extension of TR38.901 for 7-24 GHz Apple
R1-2407046 Channel Model Adaptation/Extension of TR38.901 for 7-24GHz Qualcomm Incorporated
R1-2407073 Channel model adaptation/extension of TR38.901 for 7-24 GHz CEWiT
R1-2407290 Summary#1 of channel model adaptation and extension Moderator (ZTE)
From Tuesday session
Agreement
Previous agreement made in RAN1#117 is updated as:
For the assumption on the aperture size of antenna array, the following is considered for near-field and spatial non-stationarity channel model study, e.g., simulation/measurement and calibration:
· Up to 1.5 m for UMa with maximum antenna elements in the array is 5k for single Polarization.
· Up to 1 m for UMi with maximum antenna elements in the array is 2.22k for single Polarization.
· Up to 0.71 m for Indoor factory with maximum antenna elements in the array is 1.12k for single Polarization.
· Up to 0.25 (for rectangular antenna array), 0.5 (for linear antenna array) m for Indoor office with maximum antenna elements in the array is 256, 80 for single Polarization, respectively.
Agreement
Confirm the following working assumption made in RAN1#117.
Working Assumption
For the near-field channel modeling, no changes are expected on both value and parameter generation procedure of at least following large-scale parameters in existing TR 38.901:
· Pathloss model, SF, LOS probability
· FFS:DS, ASA, ASD, ZSA, ZSD, K factor
Agreement
For the near-field channel modeling, no changes are expected on both value and parameter generation procedure of at least following large-scale parameters in existing TR 38.901:
· DS, ASA, ASD, ZSA, ZSD, K factor
Agreement
The spatial non-stationarity characteristics, i.e., the antenna element-wise power variation at least at BS side, is supported in the channel modelling.
FFS: the antenna element-wise power variation at UE side.
FFS: the causes and details of methodology for modelling the spatial non-stationarity characteristics.
Agreement
For near-field channel, no changes are expected on following parameters of the non-direct path between TRP and UE:
· Polarization matrix
· FFS: Amplitude
R1-2407291 Summary#2 of channel model adaptation and extension Moderator (ZTE)
From Wednesday session
Agreement
For near-field channel, the following formula is adopted to model the phase of direct path between TRP and UE as antenna element-wise channel parameter:
,
where
the 
refers to the vector
determined by the location of antenna element u and s. The 
refers to the 3D
distance between reference antenna at TRP and UE side.
Agreement
For near-field channel, if necessary, the following parameters of the non-direct path between TRP and UE should be modeled as antenna element-wise parameter.
l Phase
l FFS: Doppler shift, Angular domain parameters, delay
Observation
According to the inputs from multiple sources, partial blockage effect may cause the spatial non-stationarity.
R1-2407292 Summary#3 of channel model adaptation and extension Moderator (ZTE)
From Thursday session
Agreement
For the modelling of spatial non-stationarity, the variation (e.g., reduction) of power for the impacted ray/cluster within the element-pair link should be modelled as:
· If visible probability (VP) or visibility region (VR) is adopted,
· If physical blocker-based approach is adopted:
Agreement
For the modelling of spatial non-stationarity, if physical blocker-based approach is adopted, the following additional blocker type can be considered for blockage model B:
· Building edge for outdoor scenario
· Small object, e.g., billboard, street lamp, pillar, for either indoor or outdoor scenario
· FFS: UE-side (self-blockage) blocker for both indoor and outdoor scenario
FFS: the number and the location of the blocker between BS and one specific UE.
FFS: applicability and details for blockage Model-A.
Agreement
For near-field channel, if necessary, the antenna element-wise channel parameters of non-direct path between TRP and UE can be determined by one of the following candidate options:
· Option-1: The antenna element-wise channel parameters are derived based on at least the distance between the BS/UE and a point associated with cluster.
· Option-2: The antenna element-wise channel parameters are determined based on the existing spatial consistency procedure of TR 38.901 with updates.
Note: Companies are encouraged to check the Option-3 including the similarity/difference with Option-1.
Agreement
For the modelling of spatial non-stationarity, if visible probability or visibility region is adopted,
· Visible probability or visibility region is modelled per cluster
· Rectangle can be considered as starting point for shape of VR with following alternatives to define the size:
Final summary in R1-2407293.
Please refer to RP-234018 for detailed scope of the WI.
R1-2409225 Session notes for 9.8 (Study on channel modelling enhancements for 7-24GHz for NR) Ad-Hoc Chair (CMCC)
Friday decision: The session notes are endorsed and contents reflected below.
[118bis-R19-7-24GHz] – Daewon (Intel)
Email discussion on channel modelling for 7-24GHz
- To be used for sharing updates on online/offline schedule, details on what is to be discussed in online/offline sessions, tdoc number of the moderator summary for online session, etc
R1-2408998 Data source descriptions for 7 – 24 GHz SI Moderator (Intel Corporation)
From Tuesday session
Agreement
To check and review the results and measurement data provided in RAN1#118-bis for further discussion in next RAN1 meeting. R1-2408998 contains the list of data sources for the results and measurements provided in RAN1#118-bis, RAN1#118, RAN1#117, and RAN1#116-bis.
R1-2407683 Considerations on the 7-24GHz channel model validation Huawei, HiSilicon
R1-2407802 Discussion on validation of channel model Ericsson
R1-2407874 Views on channel model validation of TR38.901 for 7-24GHz vivo, BUPT
R1-2407931 Discussion on the channel model validation ZTE Corporation, Sanechips
R1-2408060 Discussion on channel model validation of TR38.901 for 7-24GHz CATT
R1-2408095 Discussion on channel model validation of TR38.901 for 7-24GHz BUPT
R1-2408195 Discussion on Angle Scaling for MIMO CDL Channel InterDigital, Inc.
R1-2408244 Channel model validation of TR 38.901 for 7-24 GHz Sharp
R1-2408270 Validation of Deterministic Radio Channel Model by 10 GHz Microcell Measurements Keysight Technologies UK Ltd
R1-2408283 Discussion on channel modeling verification for 7-24 GHz Intel Corporation
R1-2408388 Channel model validation of TR 38901 for 7-24 GHz NVIDIA
R1-2408421 Discussion of channel model validation of TR38.901 for 7–24GHz Sony
R1-2408484 On Validation of Channel Model Apple
R1-2408485 On Channel Model Adaptation and Extension of TR38.901 for 7-24 GHz Apple
R1-2408589 Measurements of the angular spreads in a urban and suburban macrocells Vodafone, Ericsson
R1-2408659 Discussion on channel model validation of TR38.901 for 7 - 24 GHz Samsung
R1-2408757 Discussion on Validation of the Channel Model in 38901 AT&T
R1-2408799 Discussion on channel model validation for 7-24 GHz NTT DOCOMO, INC.
R1-2408863 Channel Model Validation of TR38.901 for 7-24 GHz Qualcomm Incorporated
R1-2408895 Discussion on Channel model validation of TR38.901 for 7-24GHz Nokia
R1-2408984 Discussion on channel model validation of 3GPP TR 38.901 for 7-24 GHz Southeast University, Purple Mountain Laboratories, China Telecom
R1-2409000 Summary #1 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Tuesday session
Conclusion
Investigation and potential update of the propagation characteristics of the channel model for 6-7 GHz are part of the study for this item.
R1-2409001 Summary #2 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Wednesday session
Agreement
|
For new UE antenna model, antenna placement candidate locations relative to centre of the handheld device is as follows: · UE antenna modeling (at least for calibration), the UE antennas are placed along the edges of a rectangle reflecting a UE form factor. · The size of the device can be set to be X cm x Y cm x Z cm o FFS (X,Y, Z), e.g., (X,Y,Z) can be15cm x 6 x 0 cm, · The four corners and the centres of each edge are identified as potential locations of the UE antenna. Centre of the device is also identified as potential location of the UE antenna. · Antennas (except the centre of device antenna) are assumed to be oriented along the direction determined by the vector connecting the centre of the rectangle to the antenna location. centre of device antenna is assumed to be oriented in either forward facing or backward facing the plane of the device. o FFS: antenna field pattern with respect to the direction of antenna · FFS: how antenna elements and antenna modules are mapped to antenna location candidates, e.g., for FR1, antenna location candidates are for antenna elements, and for FR2, antenna location candidates are for antenna array modules. · FFS: how to handle polarization aspects of the antenna element/module. |
|
|
Agreement
For UE antenna radiation pattern modeling, consider the following options for further study:
· Option 1) Adapt the Table 7.3-1: Radiation power pattern of a single antenna element
|
Parameter |
Values |
|
Antenna element vertical radiation pattern (dB) |
|
|
Antenna element horizontal radiation pattern (dB) |
|
|
Combining method for 3D antenna element pattern (dB) |
FFS |
|
Maximum directional gain of an antenna element GE,max |
FFS dBi |
, where 
is the angle
relative to the +Z-axis
Agreement
The following assumptions are updated modeling parameters related to SMa use case.
|
Parameters |
SMa |
Options for FFS |
|
|
Cell layout |
Hexagonal grid, 19 micro sites, 3 sectors per site (ISD = FFS)
Up to two floors for residential buildings, up to five floors for commercial buildings. FFS: ratio between residential and commercial buildings |
ISD Option 1: 1732 m ISD Option 2: 1299 m ISD Option 3: 1000 m ISD Option 4: 250 m
Building Type Ratio Option A: 50% residential, 50% commercial Building Type Ratio Option B: 90% residential, 10% commercial |
|
|
BS antenna height hBS |
FFS |
BS Height Option 1: 35 m BS Height Option 2: 25m BS Height Option 3: 15m |
|
|
UT location |
Outdoor/indoor |
Outdoor and indoor |
- |
|
LOS/NLOS |
LOS and NLOS |
- |
|
|
Height hUT |
1.5 m for outdoor, 1.5 or 4.5 m for residential buildings, 1.5/4.5/7.5/10.5/13.5 m for commercial buildings |
- |
|
|
Indoor UT ratio |
80% indoor and 20% outdoor |
|
|
|
UT mobility (horizontal plane only) |
FFS |
|
|
|
Min. BS - UT distance (2D) |
FFS |
Min Distance Option 1: 20m Min Distance Option 2: 25m Min Distance Option 3: 35m |
|
|
UT distribution (horizontal) |
Uniform |
- |
|
|
UT distribution (vertical) |
FFS |
Vertical Distribution Option 1: 70% indoor residential users are on ground floor, 30% are on upper floor, uniform distribution across all floors for commercial
Vertical Distribution Option 2: uniform distribution across all floors for a building type |
|
|
Penetration model |
FFS: low-loss penetration model |
- |
|
Agreement
Further study and down-select cell layout, BS antenna height, and building type ratio for modeling parameters related to SMa use case. The Following are sets of option combinations prioritized for study and down-selection. Other option combinations are not precluded.
· Alt 1) ISD 1299m + Building Type Ratio 90% residential, 10% commercial + BS Height 35m
· Alt 2) ISD 1000m + Building Type Ratio 90% residential, 10% commercial + BS Height 25m
· Alt 3) ISD 250m + Building Type Ratio 90% residential, 10% commercial + BS Height 25m
· Alt 4) ISD 1299m + Building Type Ratio 90% residential, 10% commercial + BS Height 25m
· Alt 5) ISD 1732 m + Building Type Ratio 90% residential, 10% commercial + BS Height 35m
· Alt 6) ISD 1732 m + Building Type Ratio 90% residential, 10% commercial + BS Height 25m
R1-2409002 Summary #3 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Thursday session
Agreement
Further study methods of achieving frequency continuity and handling frequency dependency parameters of the channel model.
Observation:
Continue study on penetration loss for Wood, Concrete, and IRR glass taking into account measurement study conducted for the original TR38.901 (available in http://www.5gworkshops.com/5GCMSIG_White%20Paper_r2dot3.pdf )
Agreement
Study possibility of introduction of additional O2I building penetration loss model type that consider the following:
Companies are asked to provide information on the need for the different penetration loss model. Companies are encouraged to provide penetration loss per unit thickness (1 cm) of the material.
Observation
Continue study on pathloss for applicable scenarios, UMa NLOS. The following are example of suggests changes:
·
UMa NLOS: 13.54 + 38.6 39.09
log10( d3D ) + 20 log10( fc ) – 0.6
(hUT – 1.5)
Observation
Conclusion
Observation
· 2 sources observed aligned shadow fading parameters in the frequency ranges of interest for InH LOS and NLOS scenarios.
· 1 source observed (from RAN1 #118) shadow fading parameters to deviate from TR38.901 by more than 1 dB for InH LOS, InH NLOS, and UMi LOS scenarios.
· 2 sources observed no need for updates to shadow fading parameters in the frequency ranges of interest.
Continue discuss on shadow fading parameters for InH and UMi scenarios.
Observation
· 1 source observed frequency dependency of K-Factor for UMi LOS scenario.
· 1 source observed (in RAN1 #118) deviation of mean K-factor by 4 dB for UMi LOS scenario and 1.5 dB for InH LOS scenario.
Continue study of K-factor parameters for InH LOS and UMi LOS scenarios.
Agreement
Table 7.6.9-1: Parameters for the absolute time of arrival model
|
Scenarios |
InF-SL, InF-DL |
InF-SH, InF-DH |
UMi |
UMa |
|
|
|
|
-7.5 |
-7.5 |
-7 |
-6.8 |
|
|
0.4 |
0.4 |
0.4 |
0.6 |
|
|
Correlation distance in the horizontal plane [m] |
6 |
11 |
15 |
50 |
|
Observation
· 1 Source observed decorrelation distance for DS and KF for UMi LOS are different from measured results, and possibly have frequency dependency.
Continue study on correlation distances for applicable scenarios.
Agreement
Study the possibility of supporting a < 500 m ISD for UMa
Agreement
Further study LOS probability assumption for SMa
|
Scenario |
LOS probability (distance is in meters) |
|
SMa |
Option1:
· FFS: α, β, γ, δ parameters
Option 2: (ITU M.2135-1)
· BS height of 35m
Option 3:
· For BS height of 25m, and UE height of 1.5m |
Working assumption
Use the following pathloss formula assumption for SMa (based on ITU M.2135-1).
|
Scenario |
LOS/NLOS |
Pathloss [dB], fc is in GHz and d is in meters |
Shadow fading std [dB] |
default values |
Applicability range |
|
SMa |
LOS |
|
|
10 m < d< dBP dBP < d < 5000 m W = 20m, h = 10m |
0.8
5 m < h < 50 m 5m < W < 50 m 10 m < hBS < [150] m 1 m < hUT < [10] m |
|
NLOS |
FFS potential changes:
|
|
10 m < dBP < 5000 m W = 20m, h = 10m |
Agreement
Further study the following modeling parameters and associated parameter assumption values for SMa:
Final summary in R1-2409003.
Including near-field propagation and spatial non-stationarity
R1-2407684 Considerations on the 7-24GHz channel model extension Huawei, HiSilicon
R1-2407803 Discussion on adaptation and extension of channel model Ericsson
R1-2407875 Views on channel model adaptation/extension of TR38.901 for 7-24GHz vivo, BUPT
R1-2407932 Discussion on the channel model adaptation and extension ZTE Corporation, Sanechips
R1-2408061 Discussion on channel model adaptation/extension of TR38.901 for 7-24GHz CATT
R1-2408089 Discussion on channel modelling adaptation/extension for 7-24GHz LG Electronics
R1-2408096 Discussion on modeling near-field propagation and spatial non-stationarity in TR38.901 for 7-24GHz BUPT, CMCC
R1-2408156 Channel model adaptation and extension for 7-24GHz OPPO
R1-2408196 Discussion on Channel Model Extension for FR3 InterDigital, Inc.
R1-2408284 Discussion on channel model adaptation/extension Intel Corporation
R1-2408389 Channel model adaptation of TR 38901 for 7-24 GHz NVIDIA
R1-2408422 Discussion of channel model adaptation/extension of TR38.901 for 7–24GHz Sony
R1-2408499 Discussion on channel model adaptation/extension for 7-24 GHz Fujitsu
R1-2408660 Discussion on channel model adaptation/extension of TR38.901 for 7 - 24 GHz Samsung
R1-2408705 Discussion on channel modelling enhancements for 7-24GHz for NR MediaTek Inc.
R1-2408864 Channel Model Adaptation/Extension of TR38.901 for 7-24GHz Qualcomm Incorporated
R1-2408896 Discussion on Channel model adaptation/extension of TR38.901 for 7-24GHz Nokia
R1-2409152 Summary#1 of channel model adaptation and extension Moderator (ZTE Corporation)
From Tuesday session
Conclusion
The spatial non-stationarity characteristics at UE side (e.g., due to the impact of hand(s) and/or head), i.e., the antenna element-wise power variation, is supported in the channel modelling in TR 38.901 with potential updates.
R1-2409153 Summary#2 of channel model adaptation and extension Moderator (ZTE Corporation)
From Wednesday session
Agreement
For near-field channel, if necessary, to model the following antenna element-wise channel parameters of direct path between TRP and UE,
· Angular domain parameters
· FFS: Doppler shift, Delay
with Option-2 “Determined by the antenna element locations of both TRP and UE”.
Note: Angular domain parameters can be optionally modelled.
Conclusion
For near-field channel, no changes are expected on following parameters of the non-direct path between TRP and UE:
· Amplitude
R1-2409154 Summary#3 of channel model adaptation and extension Moderator (ZTE Corporation)
From Thursday session
Agreement
For near-field channel, if necessary, the antenna element-wise channel parameters of non-direct path between TRP and UE is modelled by:
· For the non-direct paths, the antenna element-wise channel parameters are derived based on at least the distance between the BS/UE and a point associated with cluster, i.e.,
o
is used to determine the 1st point associated with
cluster to calculate the parameter at least for BS side;
o
FFS: 
is used to determine the 2nd point associated with
cluster to calculate the parameter at least for UE side;
o FFS: whether one point is sufficient
o
FFS: the details to
generate the , ,e.g.,if the d2 is needed, both and will be generated pair wise.
o FFS: The ratio of non-direct path which show the phenomenon with spherical wavefront
o FFS: The determination of the point associated with cluster is conducted in Cluster-level
Agreement
For near-field channel, if necessary, the following parameters of the non-direct path between TRP and UE should be modeled as antenna element-wise parameter.
· Angular domain parameters, Delay (both can be optionally modelled)
o Working Assumption
§ The existing model in Clause 7.6.2 of TR 38.901 is used to model the delay.
· FFS: Doppler shift
Agreement
For near-field channel, if necessary, to model the following antenna element-wise channel parameter of direct path between TRP and UE,
· Delay (can be optionally modelled)
o Working Assumption
§ The existing model in Clause 7.6.2 of TR 38.901 is used to model the delay.
with Option-2 “Determined by the antenna element locations of both TRP and UE”.
Conclusion
RAN1 confirms that the modelling of near-field propagation characteristics (i.e., characteristics of spherical wavefront) is taken as an additional modelling component, and the relevant progress (e.g., the agreement(s) with/without “if necessary”) in AI 9.8.2 will be captured in TR 38.901.
Agreement
For the modelling of spatial non-stationarity, if physical blocker-based approach is adopted, at least for blockage model B, the following new blocker type/size can be introduced in the Table 7.6.4.2-5 in TR 38.901:
|
|
Typical set of blockers |
Blocker dimensions |
Mobility pattern |
|
Outdoor |
Billboard |
Cartesian: w=2.4m; h=3.6m |
Stationary |
|
Outdoor |
Street lamp |
Cartesian: w=0.4m; h=0.8m |
Stationary |
|
Outdoor |
Building edge |
Cartesian: w=X m; h=Y m |
Stationary |
|
Indoor |
Pillar |
Cartesian: w=0.3m; h=3m |
Stationary |
· FFS: the value of X and Y for the blocker dimensions of building edge is needed.
· FFS: the details related to the user hand/head:
|
Indoor;Outdoor |
FFS: User hand |
Cartesian: w=[0.2]m; h=[0.1]m |
Stationary |
|
Indoor;Outdoor |
FFS: User head |
Cartesian: w=[0.24]m; h=[0.20] m |
Stationary |
· FFS: The details of blockage model B to implement the impact of user hand and head.
· FFS: The location of the user hand/head
Agreement
For the modelling of spatial non-stationarity at BS side, if physical blocker-based approach is adopted, for blockage model B, the procedure to determine the number of blockers and locations are same as existing blockage model B.
For the modelling of spatial non-stationarity at UE side, if blocker-based approach is adopted, an attenuation per antenna element is introduced, the following options can be considered with down-selection by RAN1#120:
o At most 2 hand type blockers and one head type blocker for a specific UE is assumed.
o FFS: the details, e.g., how to determine the value of loss for the case as one hand grip, a dual hand grip and/or head proximity
Final summary in R1-2409155.
Please refer to RP-234018 for detailed scope of the WI.
R1-2410847 Session notes for 9.8 (Study on channel modelling enhancements for 7-24GHz for NR) Ad-Hoc Chair (CMCC)
Friday decision: The session notes are endorsed and contents reflected below.
[119-R19-7-24GHz] – Daewon (Intel)
Email discussion on channel modelling for 7-24GHz
- To be used for sharing updates on online/offline schedule, details on what is to be discussed in online/offline sessions, tdoc number of the moderator summary for online session, etc
R1-2410170 Draft CR/TP to incorporate the agreement for Rel-19 7-24GHz Channel model ZTE Corporation,Intel Corporation
R1-2410631 Data source descriptions for 7 – 24 GHz SI Moderator (Intel Corporation)
From Thursday session
Note:
To check and review the following results and measurement data provided in RAN1 #119 for further discussion in next RAN1 meeting. R1-2410631 contains the list of data sources for the results and measurements provided in RAN1 #119, #118-bis, #118, #117, and #116-bis.
R1-2409402 Considerations on the 7-24GHz channel model validation Huawei, HiSilicon
R1-2409441 Discussion on validation of channel model Ericsson
R1-2409467 Further Discussion on Angle Scaling for MIMO CDL Channel InterDigital, Inc.
R1-2409610 Discussion on channel model validation of TR38.901 for 7 - 24 GHz Samsung
R1-2409694 Views on channel model validation of TR38.901 for 7-24GHz vivo, BUPT
R1-2409724 Discussion on the channel model validation ZTE Corporation, Sanechips
R1-2409738 Discussion on channel modeling verification for 7-24 GHz Intel Corporation
R1-2409778 Channel model validation of TR 38901 for 7-24 GHz NVIDIA
R1-2409819 Validation of Channel Model Apple
R1-2409954 Discussion on channel model validation for 7-24GHz CATT
R1-2410015 Channel model validation for 7-24 GHz Lenovo
R1-2410213 Discussion on channel model validation of TR38.901 for 7-24GHz BUPT
R1-2410236 Further Discussion of channel model validation of TR38.901 for 7–24GHz Sony
R1-2410254 Instantaneous directional channel measurements and parameter estimation at 14 GHz ROHDE & SCHWARZ
R1-2410299 Measurements of the angular spreads in a urban and suburban macrocells Vodafone, Ericsson
R1-2410319 Channel model validation of TR38.901 for 7-24 GHz Sharp, Nokia
R1-2410655 Discussion on Validation of the Channel Model in 38901 AT&T (rev of R1-2410334)
R1-2410402 Discussion on channel model validation for 7-24 GHz NTT DOCOMO, INC.
R1-2410491 Channel Model Validation of TR38.901 for 7-24 GHz Qualcomm Incorporated
R1-2410594 Discussion on Channel model validation of TR38.901 for 7-24GHz Nokia
R1-2410632 Summary of issues for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
R1-2410633 Summary #1 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Tuesday session
Agreement
For suburban scenario, adopt the following assumption for calibration purposes:
· Building type ratio: 90% residential, 10% commercial
Agreement
For suburban scenario, adopt the following assumption for calibration purposes:
· UT Vertical Distribution Option 2: uniform distribution across all floors for a building type
Agreement
For suburban scenario, adopt the following assumption for calibration purposes:
· UT mobility in horizontal plane only: Indoor UTs: 3 km/h, outdoor UTs: 40 km/h
Agreement
For handheld devices adopt the following device dimensions for UE antenna modeling:
· 15 cm x 7 cm x 0 cm
Conclusion
For any new channel modeling parameter updates, replace the existing parameters values (whenever applicable). For parameters that were replaced TR should add information that the parameter value/model equation/procedure was changed in Rel-19.
R1-2410634 Summary #2 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Wednesday session
Conclusion
Based on measurement data provided, RAN1 concludes pathloss models in TR38.901 for the following scenarios are validated and no updates to TR are made.
Observation
For the following scenarios, some sources have observed some differences in delay spread in the TR and measurement taken for 6 – 24 GHz frequency range. Other sources have observed delay spread consistent with the model in the TR.
· InF LOS
· InF NLOS
Conclusion
For the following scenarios, there is no consensus to update delay models due to lack of consistent and significant observed difference between model and measurements.
· InF LOS
· InF NLOS
Agreement
Study further on the need for introduction of intra-cluster power profile.
R1-2410635 Summary #3 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Thursday session
Agreement
Further study penetration loss modeling, including the following aspects:
|
|
Concrete |
Wood |
|
Existing TR |
|
|
|
New Updates |
|
|
|
Tconcrete and Twood represent reference (default) thickness of the material. For concrete and wood, the reference thickness are 23 cm and 6 cm, respectively. |
||
Agreement
For the following scenarios, further study path loss model parameters for at least 6 – 24 GHz frequency range.
· UMi LOS
· UMi NLOS
· UMa LOS
· UMa NLOS
Agreement
For the following scenarios, further study delay spread parameters for at least 6 – 24 GHz frequency range.
· UMi LOS
· UMi NLOS
· InH-Office LOS
· InH-Office NLOS
· UMa LOS
· UMa NLOS
Agreement
Based on measurement data provided, RAN1 concludes angular spread parameters in TR38.901 that following scenarios are validated and no updates to TR are made.
Observation
For the following scenarios, some sources have observed some differences in angular spread in the TR and measurement taken for 6 – 24 GHz frequency range. Other sources have observed angular spread consistent with the model in the TR.
· InH LOS and NLOS: ZSA, ZSD
· UMi LOS: ZSA, ZSD
· UMi NLOS: ZSD
· UMa LOS: ZSA
Conclusion
For the following scenarios, there is no consensus to update angular spread models due to lack of consistent and significant observed difference between model and measurements.
· InH LOS and NLOS: ZSA, ZSD
· UMi LOS: ZSA, ZSD
· UMi NLOS: ZSD
· UMa LOS: ZSA
Agreement
For the following scenarios, further study angular spread parameters for at least 6 – 24 GHz frequency range.
· InH LOS/NLOS: ASA, ASD
· UMi LOS: ASA, ASD
· UMi NLOS: ASA, ASD, ZSA
· UMa LOS: ASD, ASA
· UMa NLOS: ASA, ASD, ZSA
· InF LOS and NLOS: ASD, ASA, ZSA, ZSD
Agreement
Further study number of clusters for existing deployment scenarios (InH, InF, UMi, UMa, RMa) taking into consideration the following:
· Consistency/continuity across frequencies below 6GHz and above 24 GHz, including whether to update values for other frequencies based on measurements
· Whether changes to number of clusters result in meaningful impact to system performances and evaluation of features
Conclusion
Based on measurement data provided, RAN1 concludes shadow fading parameters in TR38.901for the following scenarios are validated and no updates to TR are made.
Observation
For the following scenarios, some sources have observed some differences in shadow fading in the TR and measurement taken for 6 – 24 GHz frequency range. Other sources have observed shadow fading with the model in the TR.
· UMi LOS
Conclusion
For the following scenarios, there is no consensus to update shadow fading due to lack of consistent and significant observed difference between model and measurements.
· UMi LOS
Agreement
Further study the need for updating the K-factor parameters for existing deployment scenarios (InH, InF, UMi, UMa, RMa) taking into consideration the following:
Working Assumption
Table 7.6.9-1: Parameters for the absolute time of arrival model
|
Scenarios |
UMi |
UMa |
|
|
|
|
-7.5 |
-7.4 |
|
|
0.5 |
0.2 |
|
|
Correlation distance in the horizontal plane [m] |
15 |
50 |
|
Agreement
Table 7.6.9-1: Parameters for the absolute time of arrival model
|
Scenarios |
InH |
|
|
|
|
Option 1) -7.9 Option 2) -8.6 |
|
|
Option 1) 0.3 Option 2) 0.1 |
|
|
Correlation distance in the horizontal plane [m] |
10 |
|
Agreement
,
is the mean angle
of the intermediate ray angles, calculated using the definition in Annex
A.
is a function
which wraps an azimuth angle to the half-open interval (-180, 180].
).
) = AS_desired
Agreement
For suburban scenario, further consider following options and down-select a value for BS height assumption for calibration purposes:
Note: It should be understood that BS height selected here is for calibration purposes and the channel model developed for suburban macrocell scenarios may be applicable for a range of BS heights [25 – 35]m.
Agreement
For suburban scenario, further consider following options and down-select a value for ISD assumption for calibration purposes:
Note: It should be understood that ISD selected here is for calibration purposes and the channel model developed for suburban macrocell scenarios is applicable for a range of ISD [1200 – 1800]m.
Agreement
For suburban scenario, further study the LOS probability equation.
, where dm,
α, β, γ, δ are modeling parameters
Agreement
Further study the need of additional low loss outdoor-to-indoor (O2I) building penetration loss model for suburban scenario.
Agreement
Agreement
Capture channel modeling updates regarding suburban macrocell scenario as follows:
Agreement
Further study device dimension and antenna placement applicability for customer premise equipment (CPE) devices, include the need for defining CPE device type dimensions.
Agreement
Further refine previous agreement (made in RAN1#118bis) on UE antenna radiation patternmodeling as follows:
|
Parameter |
Values |
|
Antenna element vertical radiation pattern (dB) |
|
|
Antenna element horizontal radiation pattern (dB) |
|
|
Combining method for 3D antenna element pattern (dB) |
|
|
Maximum directional gain of an antenna element GE,max |
FFS dBi |
|
Note: max direction gain and half power beam widths should be selected such that total antenna efficiency should be equal or less than 0dBi. |
|
, where 
is the angle
relative to the +Z-axis
= -90° to +90°
Agreement
For UE antenna modeling of handheld devices,
Agreement
For handheld UE device type antenna radiation pattern, further study details of antenna field pattern orientation with respect to the direction of antenna for each antenna candidate locations.
R1-2410636 Summary #4 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
Final summary in R1-2410910.
Including near-field propagation and spatial non-stationarity
R1-2409403 Considerations on the 7-24GHz channel model extension Huawei, HiSilicon
R1-2409442 Discussion on adaptation and extension of channel model Ericsson
R1-2409468 Further Discussion on Channel Model Extension for FR3 InterDigital, Inc.
R1-2409491 Discussion on channel modelling adaptation/extension for 7-24GHz LG Electronics
R1-2409611 Discussion on channel model adaptation/extension of TR38.901 for 7 - 24 GHz Samsung
R1-2409695 Views on channel model adaptation/extension of TR38.901 for 7-24GHz vivo, BUPT
R1-2409725 Discussion on the channel model adaptation and extension ZTE Corporation, Sanechips
R1-2410656 Discussion on channel model adaptation/extension Intel Corporation (R1-2409739)
R1-2409779 Channel model adaptation of TR 38901 for 7-24 GHz NVIDIA
R1-2409821 Channel Model Adaptation and Extension of TR38.901 for 7-24 GHz Apple
R1-2409955 Discussion on channel model adaptation/extension for 7-24GHz CATT
R1-2410016 Channel model extension for 7-24 GHz Lenovo
R1-2410099 Channel model adaptation and extension for 7-24GHz OPPO
R1-2410131 Discussion on channel model adaptation/extension for 7-24 GHz Fujitsu
R1-2410214 Discussion on modeling near-field propagation and spatial non-stationarity in TR38.901 for 7-24GHz BUPT, CMCC
R1-2410237 Further discussion of channel model adaptation/extension of TR38.901 for 7–24GHz Sony
R1-2410320 Views on channel modelling adaptation/extension for 7-24GHz Sharp, NYU WIRELESS
R1-2410492 Channel Model Adaptation/Extension of TR38.901 for 7-24GHz Qualcomm Incorporated
R1-2410520 Discussion on channel modelling enhancements for 7-24GHz for NR MediaTek Inc.
R1-2410595 Discussion on Channel model adaptation/extension of TR38.901 for 7-24GHz Nokia
R1-2410628 Channel model adaptation/extension of TR38.901 for 7-24 GHz CEWiT Late submission
R1-2410767 Summary#1 of channel model adaptation and extension Moderator (ZTE Corporation)
From Tuesday session
Agreement
For near-field channel, the following formula is adopted to model the angular domain parameters of direct path between TRP and UE as antenna element-wise channel parameter:
Where
, 
, 
, 
are the respective
antenna element-wise elevation arrival angles, azimuth arrival angles,
elevation departure angles and azimuth departure angles of LoS path between the
transmit antenna element s and receive antenna element u.
R1-2410768 Summary#2 of channel model adaptation and extension Moderator (ZTE Corporation)
From Wednesday session
Working Assumption
|
|
Typical set of blockers |
Blocker dimensions |
Mobility pattern |
|
Outdoor |
Building edge |
Cartesian: w=50 m; h=20 m |
Stationary |
, where 
represents one
of 
, 
, 
, and 
defined in
equation 7.6-29 in section 7.6.4.2 of TR 38.901.
Agreement
For the modelling of spatial non-stationarity at BS side, if stochastic based approach, at least for unified visible probability (VP) and visibility region (VR), is adopted, the following steps are considered:
FFS: the details of each step
Note: Merge of some of the steps is not precluded
Working Assumption
For the modelling of spatial non-stationarity at UE side mainly due to close proximity, if blocker-based approach is adopted, the Option-3 is supported with following details:
R1-2410769 Summary#3 of channel model adaptation and extension Moderator (ZTE Corporation)
From Thursday session
Agreement
For near-field channel, to generate the channel parameter, the reference point is defined as:
· The physical center of the antenna array/center of the device.
Conclusion
For near-field channel, no changes are expected on following parameter for direct path between TRP and UE:
· Doppler shift
Conclusion
For near-field channel, no changes are expected on following parameter for non-direct path between TRP and UE:
· Doppler shift
Agreement
For near-field channel, the following formula is adopted to model the angular domain parameters of non-direct path between TRP and UE as antenna element-wise channel parameter:
where
, 
are the ray-wise
angular domain parameters of ray m cluster n between the transmit antenna
element s and receive antenna element u.
Agreement
For the modelling of spatial non-stationarity at BS side, if physical blocker-based approach is adopted, the rotation and power variation calculation are conducted in ray level.
Agreement
For
near-field channel, for
the non-direct paths, the
distance 
between the BS and the 1st
point associated with cluster
is generated with one of following options that to be selected in RAN1#120:
is generated
directly following a specific distribution.o
For
the 
clusters, = speed of light times
the absolute delay of the cluster
o
For
other 
clusters, the distance
is equal or less than the speed of
light times the absolute delay of the cluster and generated following a
specific distribution
§ FFS: The specific distribution, e.g., log-normal distribution for UMi
§
FFS:
The values of and
o The generation of absolute delay of the cluster is according to the procedure defined in Section 7.6.9 in TR 38.901
§ FFS: The value for UMi, UMa, InH-Office.
is generated by a
scaling factor multiplied by the absolute distance corresponding to the
absolute delay of the cluster, where the scaling factor is generated from
a specific distribution.o
For
the clusters, = speed of light times
the absolute delay of the cluster (i.e., the scaling factor is 1)
o
For
other clusters, the distance
is equal or less than the speed of light
times the absolute delay of the cluster and the scaling factor generated following a
specific distribution (i.e., the scaling factor is equal or less than 1)
§ FFS: Distribution of scaling factor, e.g., Beta distribution for UMa
§
FFS:
The values of and
o The generation of absolute delay of the cluster is according to the procedure defined in Section 7.6.9 in TR 38.901
§ FFS: The value for UMi, UMa, InH-Office.
Note
1: If 
is agreed to be
considered, the
generation of can follow the same
principle with the generation of .
Working Assumption
For near-field channel, for the non-direct paths, the impact of spherical wavefront is optionally considered at UE side.
R1-2410880 Summary#4 of channel model adaptation and extension Moderator (ZTE Corporation)
Agreement
For near-field channel, in principle, one of following options is considered to calculate the antenna element-wise delay of direct path between TRP and UE:
where
refers to the vector determined by the location of receive antenna
element u and transmit antenna element s, 
refers to the 3D distance between reference antenna at TRP and UE
side.
o The above formula is applied with the same principle as existing model in Clause 7.6.2 of TR 38.901, and the channel response of LOS ray between Rx antenna u and Tx antenna s at delay τ at time t is given by:
o Following formula is adopted to model the antenna element-wise delay in the channel coefficient as:
, 
where
refers to the vector determined by the location of receive antenna
element u and transmit antenna element s, refers to the 3D distance between reference antenna at TRP and UE
side.
o “The existing model in Clause 7.6.2 of TR 38.901 is used to model the delay.”
·
Note:
is same as that is
defined in 7.5-30 in TR38.901
Final summary in R1-2410881.
Please refer to RP-234018 for detailed scope of the WI.
R1-2501549 Session notes for 9.8 (Study on channel modelling enhancements for 7-24GHz for NR) Ad-Hoc Chair (CMCC)
Friday decision: The session notes are endorsed and contents reflected below.
[120-R19-7-24GHz] – Daewon (Intel)
Email discussion on channel modelling for 7-24GHz
- To be used for sharing updates on online/offline schedule, details on what is to be discussed in online/offline sessions, tdoc number of the moderator summary for online session, etc
R1-2500411 Draft CR for Rel-19 7-24GHz Channel model Intel Corporation, ZTE Corporation
From Friday session
Email discussion on calibration for channel modelling enhancements for 7-24GHz for NR – Daewon (Intel)
- March 2 ~ 5
R1-2500087 Considerations on the 7-24GHz channel model validation Huawei, HiSilicon
R1-2500122 Discussion on Evaluation of FR3 Channel Modeling InterDigital, Inc.
R1-2500236 Views on channel model validation for 7-24GHz CATT
R1-2500362 Views on channel model validation of TR38.901 for 7-24GHz vivo, BUPT
R1-2500380 Discussion on the channel model validation ZTE Corporation, Sanechips
R1-2500393 Channel model validation of TR38.901 for 7-24 GHz Sharp
R1-2500409 Discussion on channel modeling verification for 7-24 GHz Intel Corporation
R1-2500506 Discussion on validation of channel model Ericsson
R1-2500541 Discussion on channel model validation of TR38.901 for 7-24GHz BUPT, Spark NZ Ltd
R1-2500640 Measurements of the angular spreads in urban and suburban macrocells Vodafone, Ericsson
R1-2500661 Discussion of channel model validation of TR38.901 for 7-24GHz Sony
R1-2500677 Channel model validation for 7-24 GHz Lenovo
R1-2500693 Channel model validation of TR 38901 for 7-24 GHz NVIDIA
R1-2500798 On Validation of Channel Model Apple
R1-2500862 Discussion on channel model validation of TR38.901 for 7 - 24 GHz Samsung
R1-2501048 Intra cluster power profile Keysight Technologies UK Ltd
R1-2501371 Discussion on Validation of the Channel Model in 38901 AT&T (rev of R1-2501083)
R1-2501168 Channel Model Validation of TR38.901 for 7-24 GHz Qualcomm Incorporated
R1-2501213 Discussion on channel model validation for 7-24 GHz NTT DOCOMO, INC.
R1-2501348 Discussion on Channel model validation of TR38.901 for 7-24GHz Nokia
R1-2501427 Summary of issues for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
R1-2501428 Summary #1 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
Conclusion
Based on measurement data provided, RAN1 concludes pathloss parameters in TR38.901 that following scenarios are validated and no updates to TR are made.
· UMi LOS/NLOS
Agreement
Further study whether/how to handle the LOS pathloss convergence regardless of the frequency band beyond the breakpoint distance phenomena.
Conclusion
Based on measurement data provided, RAN1 concludes that following angular spread parameters for 6 – 24 GHz frequency range are validated and no updates to TR are made.
· UMa LOS: ZSD
· UMa NLOS: ZSD
Conclusion
For the following scenarios, there is no consensus to update angular spread models due to lack of consistent and significant observed difference between model and measurements.
· InH LOS : ASD, ASA
· InH NLOS: ASD, ASA
· UMi LOS: ASD
· UMi NLOS: ASD, ZSA
Agreement
Table 7.6.9-1: Parameters for the absolute time of arrival model
|
Scenarios |
UMi |
UMa |
|
|
|
|
-7.5 |
-7.4 |
|
|
0.5 |
0.2 |
|
|
Correlation distance in the horizontal plane [m] |
15 |
50 |
|
Agreement
Adopt the following description for suburban scenario:
Agreement
For suburban scenario, use the BS height and ISD assumption for calibration purposes:
· BS height = 35 m
Agreement
For suburban scenario, adopt the following assumption for calibration purposes:
Agreement
Assume enumeration of candidate antenna placement locations as follows:
R1-2501429 Summary #2 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Wednesday session
Agreement
Agreement
For calibration, the antenna placements for 4 elements of handheld devices are defined as follows:
Agreement
Define candidate antenna locations for CPE devices.
FFS: Device dimensions for CPE antenna modelling.
Agreement
and 
.
and 
. and .
and 
should be rotated
according to the orientation of the each of UE antennae to get 
, 
and based on the
orientation of the UE in the global coordinate system to get 
and 
using the methods
already specified in TR 38.901, equation (7.3-3)/(7.1-11).
R1-2501430 Summary #3 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Thursday
Agreement
Example 1)
|
Finally add offset angles am from Table 7.5-3 to the cluster angles where cASA is the cluster-wise rms azimuth spread of arrival angles (cluster ASA) in Table 7.5-6. Table 7.5-3: Ray offset angles within a cluster, given for rms angle spread normalized to 1
<unchanged text omitted>
|
Example 2)
|
Finally add offset angles am from Table 7.5-3 to the cluster angles where cASA is the cluster-wise rms azimuth spread of arrival angles (cluster ASA) in Table 7.5-6. Table 7.5-3: Ray offset angles within a cluster, given for rms angle spread normalized to 1
Value and Distribution of ICPn is FFS <unchanged text omitted>
|
Example 3)
|
Finally add offset angles am from Table 7.5-3 to the cluster angles where cASA is the cluster-wise rms azimuth spread of arrival angles (cluster ASA) in Table 7.5-6. Table 7.5-3: Ray offset angles within a cluster, given for rms angle spread normalized to 1
FFS values of <unchanged text omitted>
|
Conclusion
For new scenarios, and if changes are made to existing scenarios, interested companies in RAN1 to perform large scale and full calibration based on the following simulation assumptions. Use the following updates to TR38.901 as starting point for further discussion for calibration.
|
7.8.1 Large scale calibration For large scale calibration, fast fading is not modeled. The calibration parameters can be found in Table 7.8-1. The calibration results based on TR 38.900 V14.0.0 can be found in R1-165974. Table 7.8-1: Simulation assumptions for large scale calibration
Additional calibration parameters can be found in Table 7.8-1A. It is assumed that parameters from Table 7.8-1 is used if unspecified by the additional calibration parameters in Table 7.8-1A. Table 7.8-1A: Simulation assumptions for large scale calibration
7.8.2 Full calibration The calibration parameters for full calibration including the fast fading modelling can be found in Table 7.8-2. Unspecified parameters in Table 7.8-2 are the same as those in Table 7.8-1. When P=2, X-pol (+/-45 degree) is used for BS antenna configuration 1 and X-pol (0/+90 degree) is used for UT antenna configuration. The calibration results based on TR 38.900 V14.0.0 can be found in R1-165975. Table 7.8-2: Simulation assumptions for full calibration
Additional full calibration parameters can be found in Table 7.8-2A. It is assumed that parameters from Table 7.8-2 is used if unspecified by the additional full calibration parameters in Table 7.8-2A. Table 7.8-2A: Simulation assumptions for full calibration
7.8.3 Calibration of additional features The
calibration parameters for the calibration of oxygen absorption, large
bandwidth and large antenna array, spatial consistency,
Table 7.8-7: Simulation assumptions for calibration for near field channel modeling
Table 7.8-7: Simulation assumptions for calibration for spatial non-stationarity
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Note: Email discussion on the simulation assumption for calibration until Mar.5th .
Conclusion
To check and review the following results and measurement data provided in RAN1 #120 for further discussion in next RAN1 meeting. R1-2501426 contains the list of data sources for the results and measurements provided since RAN1 #116-bis until RAN1 #120.
R1-2501426 Data source descriptions for 7 – 24 GHz SI Moderator (Intel Corporation)
Agreement
Table 7.6.9-1: Parameters for the absolute time of arrival model
|
Scenarios |
InH |
|
|
|
|
Option 1) -7.9 Option 2) -8.6 Option 3) for 40% of the NLOS cluster, Δτ=0; for other 60% of NLOS
cluster |
|
|
Option 1) 0.3 Option 2) 0.1 Option 3) for 40% of
the NLOS cluster with Δτ=0, for other 60% of the
NLOS cluster |
|
|
Correlation distance in the horizontal plane [m] |
10 |
|
Working Assumption
Table X: Scale factor values for each CDL model
|
CDL Type |
Desired AOD Spread（°） |
Scale Factor (AOD) |
Desired AOA Spread（°） |
Scale Factor (AOA) |
Desired ZOA Spread（°） |
Scale Factor (ZOA) |
Desired ZOD Spread（°） |
Scale Factor (ZOD) |
|
CDL-A |
5 |
0.068 |
30 |
0.353 |
5 |
0.240 |
1 |
0.035 |
|
10 |
0.136 |
45 |
0.527 |
10 |
0.480 |
3 |
0.106 |
|
|
15 |
0.204 |
60 |
9.525 |
15 |
0.723 |
5 |
0.176 |
|
|
25 |
0.341 |
|
|
|
|
|
|
|
|
CDL-B |
5 |
0.124 |
30 |
0.542 |
5 |
0.652 |
1 |
0.194 |
|
10 |
0.248 |
45 |
0.808 |
10 |
1.302 |
3 |
0.582 |
|
|
15 |
0.371 |
60 |
1.071 |
15 |
1.948 |
5 |
0.971 |
|
|
25 |
0.617 |
|
|
|
|
|
|
|
|
CDL-C |
5 |
0.128 |
30 |
0.431 |
5 |
0.648 |
1 |
0.364 |
|
10 |
0.257 |
45 |
0.645 |
10 |
1.297 |
3 |
1.093 |
|
|
15 |
0.386 |
60 |
7.749 |
15 |
1.950 |
5 |
1.822 |
|
|
25 |
0.651 |
|
|
|
|
|
|
|
|
CDL-D |
5 |
0.323 |
30 |
9.869 |
5 |
4.327 |
1 |
0.448 |
|
10 |
0.665 |
45 |
N/A |
10 |
8.887 |
3 |
1.347 |
|
|
15 |
1.059 |
60 |
N/A |
15 |
14.034 |
5 |
2.258 |
|
|
25 |
9.354 |
|
|
|
|
|
|
|
|
CDL-E |
5 |
0.395 |
30 |
9.743 |
5 |
6.919 |
1 |
0.971 |
|
10 |
0.801 |
45 |
N/A |
10 |
14.838 |
3 |
2.918 |
|
|
15 |
1.233 |
60 |
N/A |
15 |
27.285 |
5 |
4.877 |
|
|
25 |
7.780 |
|
|
|
|
|
|
Note: the values are computed by formula option 2A defined in RAN1#119.
Agreement
Agreement
|
< Unchanged text omitted > 7.7.5.1 CDL extension: Scaling of angles The angle values of
CDL models are fixed, which is not very suitable for MIMO simulations for
several reasons; The PMI statistics can become biased, and a fixed
precoder may perform better than open-loop and on par with closed-loop or
reciprocity beamforming.
Furthermore,
a
CDL only represents a single channel realization. The predefined angle values
in the CDL models can be generalized by introducing angular
translation and scaling. By translation, mean angle can be changed to in which:
The angular scaling is
applied on Example scaling values are: - AOD spread (ASD) for each CDL model: {5, 10, 15, 25} degrees. - AOA spread (ASA) for each CDL model: {30, 45, 60} degrees. - ZOA spread (ZSA) for each CDL model: {5, 10, 15} degrees. - ZOD spread (ZSD) for each CDL model: {1, 3, 5} degrees. The angular scaling and translation can be applied to some or all of the azimuth and zenith angles of departure and arrival. Note: The
azimuth angles of Note: The azimuth angles may need to be wrapped around to be within [0, 360] degrees, while the zenith angles may need to be clipped to be within [0, 180] degrees. Note: The resulting
scaled |
R1-2501431 Summary #4 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Friday session
Agreement
,
,
Agreement
for
single silver-coating; 
for
double silver-coating; for
triple silver-coating.
for
single silver-coating; for
double silver-coating; for
triple silver-coating.
,
Agreement
Note: for all options, consider the impact to overall building exterior penetration loss from the potential changes to concrete penetration loss.
Agreement
Agreement
Agreement
Discuss further on whether to introduce additional model to handle LOS probability impact from vegetation for SMa and details of the additional modeling component.
For suburban scenario, the down-select among the following LOS probability
|
Parameter |
|
|
|
30 m |
|
|
20 m |
|
|
8 m |
|
|
15 m |
|
|
2% |
|
|
18% |
|
|
0% (no vegetation),
10% (sparse vegetation), |
Working Assumption
|
Scenarios |
SMa |
Reference – ITU M.2135 SMa |
TR38.901 UMa |
|||||||
|
LOS |
NLOS |
O2I |
LOS |
NLOS |
O2I |
LOS |
NLOS |
O2I |
||
|
Delay spread (DS) lgDS=log10(DS/1s) |
µlgDS |
–7.23 |
Option 1) -7.12 Option 2) -7.2 Option 3) -6.98 |
-6.62 |
–7.23 |
–7.12 |
N/A |
-6.955 - 0.0963 log10(fc) |
-6.28 - 0.204 log10(fc) |
-6.62 |
|
σlgDS |
0.38 |
Option 1) 0.33 Option 2) 0.58 Option 3) 0.74 |
0.32 |
0.38 |
0.33 |
N/A |
0.66 |
0.39 |
0.32 |
|
|
AOD spread (ASD) lgASD=log10(ASD/1) |
µlgASD |
0.55 |
0.55 |
0.55 |
0.78 |
0.90 |
N/A |
1.06 + 0.1114 log10(fc) |
1.5 - 0.1144 log10(fc) |
1.25 |
|
σlgASD |
0.25 |
0.25 |
0.25 |
0.12 |
0.36 |
N/A |
0.28 |
0.28 |
0.42 |
|
|
AOA spread (ASA) lgASA=log10(ASA/1) |
µlgASA |
Option 1) 1.48 Option 2) 1.75 |
Option1) 1.65 Option 2) 1.74 Option 3) 1.27 |
1.76 |
1.48 |
1.65 |
N/A |
1.81 |
2.08 - 0.27 log10(fc) |
1.76 |
|
σlgASA |
Option 1) 0.20 Option 2) 0.04 |
Option 1) 0.25 Option 2) 0.24 Option 3) 0.86 |
0.16 |
0.20 |
0.25 |
N/A |
0.20 |
0.11 |
0.16 |
|
|
ZOA spread (ZSA) lgZSA=log10(ZSA/1) |
µlgZSA |
1.31 |
Option 1) 1.32 Option 2) -0.388 |
1.01 |
N/A |
N/A |
N/A |
0.95 |
-0.3236 log10(fc) + 1.512 |
1.01 |
|
σlgZSA |
0.02 |
Option 1) 0.08 Option 2) 1.17 |
0.43 |
N/A |
N/A |
N/A |
0.16 |
0.16 |
0.43 |
|
|
Shadow fading (SF) [dB] |
σSF |
4 |
8 |
7 |
4 |
8 |
N/A |
See Table 7.4.1-1 |
See Table 7.4.1-1 |
7 |
|
K-factor (K) [dB] |
µK |
9 |
N/A |
N/A |
9 |
N/A |
N/A |
9 |
N/A |
N/A |
|
σK |
7 |
N/A |
N/A |
7 |
N/A |
N/A |
3.5 |
N/A |
N/A |
|
|
Cross-Correlations |
ASD vs DS |
0 |
0 |
0.4 |
0 |
0 |
N/A |
0.4 |
0.4 |
0.4 |
|
ASA vs DS |
0.8 |
Option 1) 0.7 Option 2) 0.5 |
0.4 |
0.8 |
0.7 |
N/A |
0.8 |
0.6 |
0.4 |
|
|
ASA vs SF |
–0.5 |
Option 1) 0 Option 2) -0.25 |
0 |
–0.5 |
0 |
N/A |
-0.5 |
0 |
0 |
|
|
ASD vs SF |
–0.5 |
-0.4 |
0.2 |
–0.5 |
–0.4 |
N/A |
-0.5 |
-0.6 |
0.2 |
|
|
DS vs SF |
–0.6 |
Option 1) -0.4 Option 2) -0.13 |
-0.5 |
–0.6 |
–0.4 |
N/A |
-0.4 |
-0.4 |
-0.5 |
|
|
ASD vs ASA |
0 |
0 |
0 |
0 |
0 |
N/A |
0 |
0.4 |
0 |
|
|
ASD vs K |
0 |
N/A |
N/A |
0 |
N/A |
N/A |
0 |
N/A |
N/A |
|
|
ASA vs K |
0 |
N/A |
N/A |
0 |
N/A |
N/A |
-0.2 |
N/A |
N/A |
|
|
DS vs K |
0 |
N/A |
N/A |
0 |
N/A |
N/A |
-0.4 |
N/A |
N/A |
|
|
SF vs K |
0 |
N/A |
N/A |
0 |
N/A |
N/A |
0 |
N/A |
N/A |
|
|
Cross-Correlations 1) |
ZSD vs SF |
FFS |
FFS |
0 |
N/A |
N/A |
N/A |
0 |
0 |
0 |
|
ZSA vs SF |
FFS |
-0.47 |
0 |
N/A |
N/A |
N/A |
-0.8 |
-0.4 |
0 |
|
|
ZSD vs K |
FFS |
N/A |
N/A |
N/A |
N/A |
N/A |
0 |
N/A |
N/A |
|
|
ZSA vs K |
FFS |
N/A |
N/A |
N/A |
N/A |
N/A |
0 |
N/A |
N/A |
|
|
ZSD vs DS |
FFS |
-0.06 |
-0.6 |
N/A |
N/A |
N/A |
-0.2 |
-0.5 |
-0.6 |
|
|
ZSA vs DS |
FFS |
FFS |
-0.2 |
N/A |
N/A |
N/A |
0 |
0 |
-0.2 |
|
|
ZSD vs ASD |
0.5 |
0.5 |
0.5 |
N/A |
N/A |
N/A |
0.5 |
0.5 |
-0.2 |
|
|
ZSA vs ASD |
FFS |
FFS |
0 |
N/A |
N/A |
N/A |
0 |
-0.1 |
0 |
|
|
ZSD vs ASA |
FFS |
FFS |
0 |
N/A |
N/A |
N/A |
-0.3 |
0 |
0 |
|
|
ZSA vs ASA |
FFS |
0.36 |
0.5 |
N/A |
N/A |
N/A |
0.4 |
0 |
0.5 |
|
|
ZSD vs ZSA |
FFS |
FFS |
0.5 |
N/A |
N/A |
N/A |
0 |
0 |
0.5 |
|
|
Delay scaling parameter rt |
2.4 |
1.5 |
2.2 |
2.4 |
1.5 |
N/A |
2.5 |
2.3 |
2.2 |
|
|
XPR [dB] |
µXPR |
8 |
4 |
9 |
8 |
4 |
N/A |
8 |
7 |
9 |
|
σXPR |
N/A |
N/A |
5 |
N/A |
N/A |
N/A |
4 |
3 |
5 |
|
|
Number of clusters N |
15 |
14 |
12 |
15 |
14 |
N/A |
12 |
20 |
12 |
|
|
Number of rays per cluster M |
20 |
20 |
20 |
20 |
20 |
N/A |
20 |
20 |
20 |
|
|
Cluster DS (cDS) in [ns] |
N/A |
N/A |
11 |
N/A |
N/A |
N/A |
max(0.25, 6.5622 -3.4084 log10(fc)) |
max(0.25, 6.5622 -3.4084 log10(fc)) |
11 |
|
|
Cluster ASD (cASD) in [deg] |
Option 1) 5 Option 2) 1.5 |
Option 1) 2 Option 2) 1.5 |
1.5 |
5 |
2 |
N/A |
5 |
2 |
5 |
|
|
Cluster ASA (cASA) in [deg] |
5 |
10 |
8 |
5 |
10 |
N/A |
11 |
15 |
8 |
|
|
Cluster ZSA (cZSA) in [deg] |
N/A |
N/A |
3 |
N/A |
N/A |
N/A |
7 |
7 |
3 |
|
|
Per cluster shadowing std ξ [dB] |
3 |
3 |
4 |
3 |
3 |
N/A |
3 |
3 |
4 |
|
|
Correlation distance in the horizontal plane [m] |
DS |
6 |
40 |
10 |
6 |
40 |
N/A |
30 |
40 |
10 |
|
ASD |
15 |
30 |
11 |
15 |
30 |
N/A |
18 |
50 |
11 |
|
|
ASA |
20 |
30 |
17 |
20 |
30 |
N/A |
15 |
50 |
17 |
|
|
SF |
40 |
50 |
7 |
40 |
50 |
N/A |
37 |
50 |
7 |
|
|
K |
10 |
N/A |
N/A |
10 |
N/A |
N/A |
12 |
N/A |
N/A |
|
|
ZSA |
N/A |
N/A |
25 |
N/A |
N/A |
N/A |
15 |
50 |
25 |
|
|
ZSD |
N/A |
N/A |
25 |
N/A |
N/A |
N/A |
15 |
50 |
25 |
|
|
Scenarios |
SMa LOS |
SMa NLOS |
SMa O2I |
For reference - UMa LOS |
For reference - UMa NLOS |
For reference – RMa O2I |
|
|
ZOD spread (ZSD) lgZSD=log10(ZSD/1°) |
µlgZSD |
Option 1) 0.14 Option 2) 0.55 |
Option 1) 0.14 Option 2) 0.55 |
0.55 |
max[-0.5, -2.1(d2D/1000) -0.01 (hUT - 1.5)+0.75] |
max[-0.5, -2.1(d2D/1000) -0.01(hUT - 1.5)+0.9] |
max[-1, -0.19(d2D/1000) -0.01(hUT - 1.5) + 0.28] |
|
σlgZSD |
Option 1) 0.16 Option 2) 0.25 |
Option 1) 0.16 Option 2) 0.25 |
0.25 |
0.40 |
0.49 |
0.30 |
|
|
ZOD offset |
µoffset,ZOD |
FFS |
FFS |
FFS |
0 |
e(fc)-10^{a(fc) log10(max(b(fc), d2D)) +c(fc) -0.07(hUT-1.5)} |
arctan((35 - 3.5)/d2D) -arctan((35 - 1.5)/d2D) |
|
Note: For NLOS ZOD offset: a(fc) = FFS; b(fc) = FFS; c(fc) = FFS; e(fc) = FFS. |
Note: For NLOS ZOD offset: a(fc) = 0.208log10(fc)- 0.782; b(fc) = 25; c(fc) = -0.13log10(fc)+2.03; e(fc) = 7.66log10(fc)-5.96. |
||||||
Agreement
Further study on introduction of a loss outdoor-to-indoor (O2I) building penetration loss model for SMa:
Working Assumption
|
|
Corresponding Working Assumption (made in RAN1#119) is dropped.
Agreement
For UE antenna modeling of handheld devices, at least support directional antenna radiation pattern for calibration purposes.
· Further study the following directional radiation pattern parameters
|
For directional radiation pattern |
||
|
Vertical Radiation Pattern |
Horizontal |
Max Gain |
|
|
|
|
|
|
|
|
|
|
|
4.5 ~ 6.5 dBi |
|
|
|
≤ 5 dBi |
|
|
|
0 ~ 5 dBi |
|
|
|
5 dBi |
Agreement
RAN1 has identified that angular spread for following scenarios require necessary updates at least for 6-24 GHz frequency range. Further discuss necessary changes. Note: For UMa ASD, weak dependency to frequency was observed and the potential necessary changes may include changes to values across wide frequency ranges.
Agreement
Conclude in RAN1 #120bis among the following:
|
Delay spread For UMi LOS |
TR38.901 @ 6.5 GHz |
Measured @ 6.5 GHz |
TR38.901 @ 10 GHz |
Measured @ 10 GHz |
TR38.901 @ 13 GHz |
Measured @ 13 GHz |
TR38.901 @ 13.5 GHz |
Measured @ 13.5 GHz |
|
|
-7.35 |
-8.16 |
-7.39 |
-7.47 |
-7.42 |
-7.85 |
-7.41 |
-8.19 |
|
|
0.38 |
0.83 |
0.38 |
0.28 |
0.38 |
0.54 |
0.38 |
0.91 |
Agreement
Conclude in RAN1 #120bis among the following:
|
Scenario |
InH @10 GHz |
Umi @10 GHz |
UMa @6.5 GHz |
UMa @13 GHz |
UMa @15GHz |
|||||||||||||||
|
TR 38.901 |
Measurement |
TR 38.901 |
Measurement |
TR 38.901 |
Measurement |
TR 38.901 |
Measurement |
TR 38.901 |
Measurement |
|||||||||||
|
LOS |
NLOS |
LOS |
NLOS |
LOS |
NLOS |
LOS |
NLOS |
LOS |
NLOS |
LOS |
NLOS |
LOS |
NLOS |
LOS |
NLOS |
LOS |
NLOS |
LOS |
NLOS |
|
|
Number of clusters |
15 |
19 |
10 |
11 |
12 |
19 |
5 |
7 |
12 |
20 |
13 |
17 |
12 |
20 |
11 |
15 |
12 |
20 |
7 |
13 |
Agreement
Conclude in RAN1 #120bis to either (1) introduce an optional modeling component for polarization variability for each cluster for NLOS component of the channel or (2) no consensus to introduce polarization variability for each cluster for NLOS component of the channel.
Final summary in R1-2501638.
Including near-field propagation and spatial non-stationarity
R1-2500088 Considerations on the 7-24GHz channel model extension Huawei, HiSilicon
R1-2500123 Discussion on Extension of FR3 Channel Modeling InterDigital, Inc.
R1-2500237 Views on channel model adaptation/extension for 7-24GHz CATT
R1-2500252 Discussion on channel modelling adaptation/extension for 7-24GHz LG Electronics
R1-2500363 Views on channel model adaptation/extension of TR38.901 for 7-24GHz vivo, BUPT
R1-2500381 Discussion on the channel model adaptation and extension ZTE Corporation, Sanechips
R1-2500410 Discussion on channel model adaptation/extension Intel Corporation
R1-2500464 Channel model adaptation and extension for 7-24GHz OPPO
R1-2500507 Discussion on adaptation and extension of channel model Ericsson
R1-2500542 Discussion on modeling near-field propagation and spatial non-stationarity in TR38.901 for 7-24GHz BUPT, CMCC
R1-2500561 Discussions on FR3 Channel Modelling Lekha Wireless Solutions
R1-2500628 Near-field channel modelling for FR3 VIAVI Solutions (rev of R1-2500627)
R1-2500678 Channel model extension for 7-24 GHz Lenovo
R1-2500694 Channel model adaptation of TR 38901 for 7-24 GHz NVIDIA
R1-2500799 On Channel Model Adaptation and Extension of TR38.901 for 7-24 GHz Apple
R1-2500863 Discussion on channel model adaptation/extension of TR38.901 for 7 - 24 GHz Samsung
R1-2501028 Discussion on channel modelling enhancements for 7-24GHz for NR MediaTek Inc.
R1-2501169 Channel Model Adaptation/Extension of TR38.901 for 7-24GHz Qualcomm Incorporated
R1-2501281 Discussion of channel model adaptation/extension of TR38.901 for 7-24GHz Sony
R1-2501349 Discussion on Channel model adaptation/extension of TR38.901 for 7-24GHz Nokia
R1-2501482 Summary#1 of channel model adaptation and extension Moderator (ZTE)
From Tuesday session
Agreement
For the modelling of spatial non-stationarity at UE side mainly due to close proximity, if blocker-based approach is adopted, the Option-3 is supported with following details:
|
Usage scenario |
one hand grip |
dual hand grip |
head and one hand grip |
|
Proportion |
58% |
29% |
13% |
Related Working Assumption made in RAN1#119 doesn’t need to be confirmed.
R1-2501483 Summary#2 of channel model adaptation and extension Moderator (ZTE)
From Wednesday session
Agreement
For the modelling of spatial non-stationarity at UE side, the fixed values of attenuation for candidate antenna locations for handheld device will be defined.
Note:
The fixed values of attenuation for candidate antenna locations for handheld device can be defined as:
|
Antenna index |
Power attenuation (dB) |
|||||||||||
|
One hand grip |
Dual hand grip |
Head and one hand grip |
||||||||||
|
Set-1@6GHz |
Set-2@ [0.7-8.4] GHz |
[Set-3@15GHz] |
Set-1@6GHz |
Set-2@ [0.7-8.4] GHz |
[Set-3@15GHz] |
Set-1@6GHz |
Set-2@ [0.7-8.4] GHz |
[Set-3@15GHz] |
||||
|
Alt-1 |
Alt-2 |
Alt-1 |
Alt-2 |
Alt-1 |
Alt-2 |
|||||||
|
1 |
0 |
1 |
1.0 |
0 |
7.31 |
9 |
3.8 |
9.68 |
10.57 |
1 |
4.0 |
14.16 |
|
2 |
0 |
FFS |
FFS |
0 |
0 |
FFS |
FFS |
0 |
7.08 |
FFS |
FFS |
9.87 |
|
3 |
0 |
3 |
3.8 |
0 |
7.31 |
9 |
3.8 |
10.6 |
0 |
3 |
3.3 |
0 |
|
4 |
6.15 |
FFS |
3.6 |
9.13 |
6.15 |
FFS |
FFS |
9.12 |
0 |
FFS |
3.3 |
9.13 |
|
5 |
7.31 |
12 |
3.8 |
10.6 |
0 |
5 |
1.0 |
0 |
6.55 |
12 |
3.3 |
10.6 |
|
6 |
0 |
FFS |
FFS |
0 |
0 |
FFS |
FFS |
0 |
10.12 |
FFS |
FFS |
9.70 |
|
7 |
0 |
1 |
1.0 |
0 |
0 |
5 |
1.0 |
0 |
10.57 |
3 |
4.0 |
14.16 |
|
8 |
0 |
FFS |
1.0 |
0 |
6.15 |
FFS |
FFS |
10.62 |
10.67 |
FFS |
4.0 |
14.27 |
Conclusion
For near-field channel, no changes are expected on following parameter for both direct and non-direct path between TRP and UE:
· Delay
Agreement
For
near-field channel, for the non-direct paths,
the distance 
between the TRP and the 1st
point associated with cluster
is generated by Option-2:
is generated
by a
scaling factor (
) multiplied
by the absolute distance corresponding to the absolute delay of cluster,
where the scaling factor () is generated
by:o
For UMa scenarios, a Beta
distribution with
[
]:
o
For UMi scenarios, a Beta distribution with [
]:
o For
Indoor Office scenarios, a Beta distribution with [
]
and 
o
For UMa, the value of is 2.
o
For UMi, the value of 
is 2.
o
For InH, the value is [75%, 10.9%]
of the total number of clusters for InH
o
Note: the clusters are the strongest
of the total number of clusters in the channel
o
Note: the value of 
is equal to total
number of clusters minus.
R1-2501484 Summary#3 of channel model adaptation and extension Moderator (ZTE)
From Thursday session
Agreement
Confirm the following working assumption.
Working Assumption (made in RAN1#119)
For near-field channel, for the non-direct paths, the impact of spherical wavefront is optionally considered at UE side.
Agreement
For near-field channel, for number of non-direct paths, the distance 
between
the UE and the 2nd point associated with cluster is generated by:
) multiplied by the absolute distance corresponding to
the absolute delay of cluster.
Agreement
· For the modelling of spatial non-stationarity at BS side, if physical blocker-based approach is adopted, the nearest K blockers from BS are selected.
· For the modelling of spatial non-stationarity at BS side, if physical blocker-based approach is adopted, at least for blockage model B, the following parameters to define the building edge are introduced in the Table 7.6.4.2-5 in TR 38.901:
|
|
Typical set of blockers |
Blocker dimensions |
Mobility pattern |
|
Outdoor |
Building edge |
Cartesian: w=50 m; h=20 m |
Stationary |
, where 
represents one of
, 
, 
and 
defined in
equation 7.6-29 in section 7.6.4.2 of TR 38.901.Note: Corresponding Working Assumption made in RAN1#119 does not need to be confirmed.
Agreement
For near-field channel, the following formula is adopted to model the phase parameters of non-direct path between TRP and UE as antenna element-wise channel parameter:
where 
is the
generated distance of the cluster n. 
is the
spherical unit vector with azimuth departure angle and elevation departure
angle for ray m of cluster n. 
is the
vector pointing from reference point to transmit antenna element s, wherein the
reference point is the physical center of the antenna array/center at Tx side.
where 
is the generated distance of the cluster n.
is the
spherical unit vector with azimuth arrival angle and elevation arrival angle
for ray m of cluster n. 
is the
vector pointing from reference point to receive antenna element u, wherein the
reference point is the physical center of the antenna array/center at Rx side.
Final summary in R1-2501485.
Please refer to RP-234018 for detailed scope of the WI.
R1-2503114 Session notes for 9.8 (Study on channel modelling enhancements for 7-24GHz for NR) Ad-Hoc Chair (CMCC)
Friday decision: The session notes are endorsed and contents reflected below.
[120bis-R19-7-24GHz] – Daewon (Intel)
Email discussion on channel modelling for 7-24GHz
- To be used for sharing updates on online/offline schedule, details on what is to be discussed in online/offline sessions, tdoc number of the moderator summary for online session, etc
R1-2503061 Summary #1 of discussions for draft CR for 7-24 GHz SI Moderator (Intel Corporation)
R1-2503129 Draft CR for Rel-19 7-24GHz Channel model Intel Corporation, ZTE Corporation (rev of R1-2502343.
From Friday session
Agreement
Draft CR R1-2503129 to TR38.901 is endorsed in principle.
R1-2502415 Curve fittings for UMi & UMa scenarios: DS, ASA, ASD LOS/NLOS Sharp
R1-2501749 Remaining Issues on Evaluation of FR3 Channel Modeling InterDigital, Inc.
R1-2501819 Views on channel model validation of TR38.901 for 7-24GHz vivo, BUPT
R1-2501897 Discussion on the channel model validation ZTE Corporation, Sanechips
R1-2501937 Channel model validation of TR 38.901 for 7-24 GHz NVIDIA
R1-2502004 On channel model validation for 7-24GHz CATT
R1-2502951 Discussion on channel model validation of TR38.901 for 7-24GHz BUPT, X-Net (rev of R1-2502186)
R1-2502217 Considerations on the 7-24GHz channel model validation Huawei, HiSilicon
R1-2502327 Further discussion of channel model validation of TR38.901 for 7-24GHz Sony
R1-2502339 Channel model validation for 7-24 GHz Lenovo
R1-2502957 Discussion on channel modeling verification for 7-24 GHz Intel Corporation (rev of R1-2502341)
R1-2502380 Discussion on channel model validation of TR38.901 for 7 - 24 GHz Samsung
R1-2502625 Validation of Channel Model Apple
R1-2502737 Discussion on Validation of the Channel Model in 38901 AT&T
R1-2502986 Views on Channel model validation of TR38.901 for 7-24 GHz Sharp (rev of R1-2502751)
R1-2502777 Discussion on channel model validation for 7-24 GHz NTT DOCOMO, INC.
R1-2502851 Channel Model Validation of TR38.901 for 7-24 GHz Qualcomm Incorporated
R1-2502878 Discussion on validation of channel model Ericsson
R1-2502899 Discussion on Channel model validation of TR38.901 for 7-24GHz Nokia
R1-2502909 Measurements of the angular spreads in a urban and suburban macrocells Vodafone, Ericsson
R1-2503063 Summary of issues for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
R1-2503064 Summary #1 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Tuesday session
Conclusion
Based on measurement data provided, RAN1 concludes that following delay spread parameters for 6 – 24 GHz frequency range are validated and no updates to TR are needed.
· InH LOS and NLOS
Agreement
Update the UMi LOS and NLOS delay spread as follows:
· Note: the update parameter was generated using all measurement and ray tracing data set from Rel-14 SI and (current) Rel-19 SI and dividing the data points into 3 groups, below 6 GHz, 6 to 24 GHz, and above 24 GHz, and weighting the data sets for each group to perform weighted least square curve fit. If a group has fewer data points, higher weight per data point is calculated. All points within a group have same weight. Sum of weights for all groups is equal to 1.
· Note: Each group is given equal weightage.
|
Scenarios |
TR 38.901 UMi |
Updated UMi |
|||
|
LOS |
NLOS |
LOS |
NLOS |
||
|
Delay spread (DS) lgDS=log10(DS/1s) |
mlgDS |
-0.24 log10(1+ fc) - 7.14 |
-0.24 log10(1+ fc) - 6.83 |
-0.18 log10(1+ f) - 7.28 |
-0.22 log10(1+ f) – 6.87 |
|
slgDS |
0.38 |
0.16 log10(1+ fc) + 0.28 |
0.39 |
0.19 * log10(1+ f) + 0.22 |
|
Agreement
Update the UMa LOS and NLOS delay spread as follows:
· Note: the update parameter was generated using all measurement and ray tracing data set from Rel-14 SI and (current) Rel-19 SI and dividing the data points into 3 groups, below 6 GHz, 6 to 24 GHz, and above 24 GHz, and weighting the data sets for each group to perform weighted least square curve fit. If a group has fewer data points, higher weight per data point is calculated. All points within a group have same weight. Sum of weights for all groups is equal to 1.
· Note: Each group is given equal weightage.
|
Scenarios |
TR 38.901 UMa |
Updated UMa |
|||
|
LOS |
NLOS |
LOS |
NLOS |
||
|
Delay spread (DS) lgDS=log10(DS/1s) |
mlgDS |
-6.955 - 0.0963 log10(fc) |
-6.28 - 0.204 log10(fc) |
-0.0794 * log10(f) – 7.067 |
-0.134 * log10(f) – 6.47 |
|
slgDS |
0.66 |
0.39 |
0.026 * log10(f) + 0.57 |
0.39 |
|
Agreement
Update the UMi LOS and NLOS AOA spread as follows:
· Note: the update parameter was generated using all measurement and ray tracing data set from Rel-14 SI and (current) Rel-19 SI and dividing the data points into 3 groups, below 6 GHz, 6 to 24 GHz, and above 24 GHz, and weighting the data sets for each group to perform weighted least square curve fit. If a group has fewer data points, higher weight per data point is calculated. All points within a group have same weight. Sum of weights for all groups is equal to 1.
· Note: Each group is given equal weightage.
|
Scenarios |
TR 38.901 UMi |
Updated UMi |
|||
|
LOS |
NLOS |
LOS |
NLOS |
||
|
AOA spread (ASA) lgASA=log10(ASA/1°) |
mlgASA |
-0.08 log10(1+ fc) + 1.73 |
-0.08 log10(1+ fc) + 1.81 |
-0.07 * log10(1+ f) + 1.66 |
-0.07 * log10(1+ f) + 1.76 |
|
slgASA |
0.014 log10(1+ fc) + 0.28 |
0.05 log10(1+ fc) + 0.3 |
0.021 * log10(1+ f) + 0.26 |
0.05 * log10(1+ f) + 0.27 |
|
Agreement
Update the UMa LOS and NLOS AOA spread as follows:
· Note: the update parameter was generated using all measurement and ray tracing data set from Rel-14 SI and (current) Rel-19 SI and dividing the data points into 3 groups, below 6 GHz, 6 to 24 GHz, and above 24 GHz, and weighting the data sets for each group to perform weighted least square curve fit. If a group has fewer data points, higher weight per data point is calculated. All points within a group have same weight. Sum of weights for all groups is equal to 1.
· Note: Each group is given equal weightage.
|
Scenarios |
TR 38.901 UMa |
Updated UMa |
|||
|
LOS |
NLOS |
LOS |
NLOS |
||
|
AOA spread (ASA) lgASA=log10(ASA/1°) |
mlgASA |
1.81 |
2.08 - 0.27 log10(fc) |
1.76 |
-0.25 * log10(f) + 2.04 |
|
slgASA |
0.20 |
0.11 |
0.19 |
-0.03 * log10(f) + 0.17 |
|
Working Assumption
· Adopt the following absolute delay parameters for RMa scenarios.
|
Scenarios |
RMa |
|
|
|
|
-8.33 |
|
|
0.26 |
|
|
Correlation distance in the horizontal plane [m] |
50 |
|
Agreement
Conclusion
For the following scenarios, there is no consensus to update pathloss models due to lack of consistent and significant observed difference between model and measurements.
· UMa LOS/NLOS
R1-2503065 Summary #2 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Wednesday session
Agreement
Update the UMa LOS and NLOS AOD spread as follows:
· Note: the update parameter was generated using all measurement and ray tracing data set from Rel-14 SI and (current) Rel-19 SI and dividing the data points into 3 groups, below 6 GHz, 6 to 24 GHz, and above 24 GHz, and weighting the data sets for each group to perform weighted least square curve fit without frequency dependency. If a group has fewer data points, higher weight per data point is calculated. All points within a group have same weight. Sum of weights for all groups is equal to 1.
· Note: Each group is given equal weightage.
|
Scenarios |
TR 38.901 UMa |
Updated UMa |
|||
|
LOS |
NLOS |
LOS |
NLOS |
||
|
AOD spread (ASD) lgASD=log10(ASD/1°) |
mlgASD |
1.06 + 0.1114 log10(fc) |
1.5 - 0.1144 log10(fc) |
0.95 |
1.12 |
|
slgASD |
0.28 |
0.28 |
0.31 |
0.42 |
|
Agreement
For UE antenna modeling, support the following direction antenna radiation pattern for calibration purposes.
|
For directional radiation pattern |
||
|
Vertical Radiation Pattern |
Horizontal |
Max Gain |
|
|
|
5.3 dBi |
Agreement
Reference UE orientation vector of the handheld UE is perpendicular to the plane of the flat UE handheld device, and reference point for near field phase calculation of the UE is assumed to be the center of the plane of the UE handheld.
Agreement
For cases when a candidate antenna placement location is used for two distinct antenna polarization field pattern:
and 
.
and 
.
Agreement
Update and agree to the following SMa LOS pathloss working assumption:
|
LOS |
For
10m ≤ d <
For
|
For
10m ≤ d <
For
|
Agreement
Update and agree to the following SMa NLOS pathloss:
Agreement
For suburban scenario, adopt the LOS probability
R1-2503066 Summary #3 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Thursday session
Agreement
Update the UMa NLOS ZOA spread as follows:
· Note: the update parameter was generated using all measurement and ray tracing data set from Rel-14 SI and (current) Rel-19 SI and dividing the data points into 3 groups, below 6 GHz, 6 to 24 GHz, and above 24 GHz, and weighting the data sets for each group to perform weighted least square curve fit. If a group has fewer data points, higher weight per data point is calculated. All points within a group have same weight. Sum of weights for all groups is equal to 1.
· Note: Each group is given equal weightage.
Agreement
Adopt the following absolute delay parameters for InH scenarios.
Table 7.6.9-1: Parameters for the absolute time of arrival model
|
Scenarios |
InH |
|
|
|
|
-8.6 |
|
|
0.1 |
|
|
Correlation distance in the horizontal plane [m] |
10 |
|
Agreement
Adopt the following correlation distance for SMa spatial consistency
Table 7.6.3.1-2 Correlation distance for spatial consistency
|
Correlation distance in [m] |
SMa |
||
|
LOS |
NLOS |
O2I |
|
|
Cluster and ray specific random variables |
40 |
50 |
15 |
|
LOS/NLOS state |
50 |
||
|
Indoor/outdoor state |
50 |
||
Agreement
Update SMa description as follows:
Agreement
For suburban scenario, adopt the following assumptions for calibration purposes:
R1-2503060 Data source descriptions for 7 – 24 GHz SI Moderator (Intel Corporation)
R1-2503067 Summary #4 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
From Friday session
Agreement
Agreement
Draft CR R1-2503129 to TR38.901 is endorsed in principle.
Observation
Agreement:
1.03 + 0.17f
Agreement
To potentially resolve the UMi/UMa pathloss convergence beyond breakpoint distance, RAN1 to further discuss following options:
to 0 m
Working assumption
Update the UMa LOS, NLOS, and O2I Cluster AOD spread as follows:
· Note: the update parameter for LOS and NLOS was generated using all measurement and ray tracing data set from Rel-14 SI and (current) Rel-19 SI and dividing the data points into 3 groups, below 6 GHz, 6 to 24 GHz, and above 24 GHz, and weighting the data sets for each group to perform weighted least square curve fit. If a group has fewer data points, higher weight per data point is calculated. All points within a group have same weight. Sum of weights for all groups is equal to 1. Each group is given equal weightage.
· Note: the update parameters were generated from scaling of updated NLOS UMa O2I value with the ratio of NLOS UMa NLOS and O2I measurement data fit from (current) Rel-19 SI at 3.7 GHz.
|
Scenarios |
TR 38.901 UMa |
Updated UMa |
||||
|
LOS |
NLOS |
O2I |
LOS |
NLOS |
O2I |
|
|
Cluster ASD (CASD) in [deg] |
5 |
2 |
5 |
3.74 |
1.82 |
1.82 |
Working assumption
Update the UMa O2I AOD spread as follows:
· Note: the update parameters were generated from scaling of updated NLOS UMa O2I value with the ratio of NLOS UMa NLOS and O2I measurement data fit from (current) Rel-19 SI at 3.7 GHz.
· Note: UMa O2I ASD values of Rel-14 TR38.901 used values from UMa O2I ASD values of TR36.873. UMa O2I ASD values of TR36.873 used UMi O2I ASD values from ITU-RM.2135-1. IMT-2020 modeling used the same values from TR36.873. TR25.996 does not contain UMa O2I values. The UMi O2I ASD parameters were derived from Winner II report.
|
Scenarios |
TR 38.901 UMa |
Updated UMa |
|
|
O2I |
O2I |
||
|
AOD spread (ASD) lgASD=log10(ASD/1°) |
mlgASD |
1.25 |
0.84 |
|
slgASD |
0.42 |
0.42 |
|
Conclusion
RAN1 to continue study the number of clusters for InH, UMi, and UMa scenarios, and intra-cluster power angular profile modeling for all scenarios.
· Study to further consider distribution of the number of clusters, resolvable clusters and subpaths of the measurements.
Conclusion
Agreement
Working Assumption
Agreement
For suburban scenario, adopt the following ZSD parameters as updated working assumption:
· Values in [ ] are working assumption
Working Assumption
Introduce new penetration loss outdoor-to-indoor (O2I) building penetration loss model applicable for SMa and used for calibration:
Agreement
Adopt the following absolute time of arrival parameters for SMa.
Agreement
Adopt the following changes to Clause 7.2 of TR38.901.
Adopt the following changes to Clause 6.2 of TR38.901.
|
6.2 Scenarios of interest Brief description of the key scenarios of interest identified (see note): (1) UMi (Street canyon, open area) with O2O and O2I: This is similar to 3D-UMi scenario, where the BSs are mounted below rooftop levels of surrounding buildings. UMi open area is intended to capture real-life scenarios such as a city or station square. The width of the typical open area is in the order of 50 to 100 m. Example: [Tx height:10m, Rx height: 1.5-2.5 m, ISD: 200m] (2) UMa with O2O and O2I: This is similar to 3D-UMa scenario, where the BSs are mounted above rooftop levels of surrounding buildings. Example: [Tx height:25m, Rx height: 1.5-2.5 m, ISD: 200m, 500m] |
Working Assumption
Agreement
For CPE devices adopt the following device dimensions for UE antenna modeling:
Agreement
For UE antenna modeling of handheld devices, introduce optional antenna imbalance modeling as part of antenna field pattern as follows:
Agreement
Confirm the down-tilt value for SMa with ISD of 1299m, and introduce downtilt value [93] for SMa with ISD of 1732m
· Down-tilt value for SMa with ISD of 1732m is working assumption
|
Parameter |
Values |
|
BS antenna electrical down-tilting |
95 degrees for SMa for ISD = 1299m [93] degrees for SMa for ISD = 1732m |
Final summary in R1-2503130.
Including near-field propagation and spatial non-stationarity
R1-2501750 Remaining Issues on Extension of FR3 Channel Modeling InterDigital, Inc.
R1-2501755 Discussion on channel modelling adaptation/extension for 7-24GHz LG Electronics
R1-2501820 Views on channel model adaptation/extension of TR38.901 for 7-24GHz vivo, BUPT
R1-2501898 Discussion on the channel model adaptation and extension ZTE Corporation, Sanechips
R1-2501936 Channel model adaptation of TR 38.901 for 7-24 GHz NVIDIA
R1-2501955 Discussions on FR3 Channel Modelling Lekha Wireless Solutions
R1-2502005 On channel model adaptation/extension for 7-24GHz CATT
R1-2502187 Discussion on modeling near-field propagation and spatial non-stationarity in TR38.901 for 7-24GHz BUPT, CMCC, X-Net
R1-2502218 Considerations on the 7-24GHz channel model extension Huawei, HiSilicon
R1-2502287 Channel model adaptation and extension for 7-24GHz OPPO
R1-2502328 Further discussion of channel model adaptation/extension of TR38.901 for 7-24GHz Sony
R1-2502340 Channel model extension for 7-24 GHz Lenovo
R1-2502342 Discussion on channel model adaptation/extension Intel Corporation
R1-2502381 Discussion on channel model adaptation/extension of TR38.901 for 7 - 24 GHz Samsung
R1-2502626 Channel Model Adaptation and Extension of TR38.901 for 7-24 GHz Apple
R1-2502852 Channel Model Adaptation/Extension of TR38.901 for 7-24GHz Qualcomm Incorporated
R1-2502884 Discussion on adaptation and extension of channel model Ericsson
R1-2502900 Discussion on Channel model adaptation/extension of TR38.901 for 7-24GHz Nokia
R1-2503024 Summary#1 of channel model adaptation and extension Moderator (ZTE)
From Tuesday session
Agreement
For the modelling of spatial non-stationarity, if the unified visible probability and visibility region based approach is adopted, for the Step 1 (whether a cluster is impacted by SNS) is determined as:
is
generated using a truncated normal distribution within [0,1]
where 
.
is
smaller than ,
the cluster is impacted by the SNS, where the is
defined as 
Agreement
For
the modelling of spatial non-stationarity, if the unified visible probability
and visibility region based approach is adopted, generate the visibility region
as a rectangle randomly located at a corner of the antenna array with dimension
, where
, 
, 
is the antenna array
height in vertical dimension and 
is the antenna array
width in horizontal dimension, 
is calculated by
where A=0.15, B=0.45, 
=33, 
~N(0,0.0015)
for UMa scenario, and n is a cluster index
Agreement
For the modelling of spatial non-stationarity, if the unified visible probability and visibility region based approach is adopted,
·
For clusters without SNS, the power
attenuation factor 
is set
to 1.
·
For clusters with SNS, the power attenuation
factor is
generated by
where,
, 
is the coordinate of the other
corner of the antenna array on the diagonal with reference corner 
, and 
is the coordinate of the other
corner of the rectangular VR on the diagonal with reference corner . The 
denotes the coordinate of the
antenna element out of VR region. C is the roll-off factor between the visible
and invisible regions.
o Note: It should be fixed in RAN1#120-bis;
R1-2503025 Summary#2 of channel model adaptation and extension Moderator (ZTE)
From Wednesday session
Agreement
For the modelling of spatial non-stationarity at UE side, introduce 3 sets of fixed attenuation values, each set corresponding to a range of frequency,
|
Antenna index |
Power attenuation (dB) |
||||||||
|
One hand grip |
Dual hand grip |
Head and one hand grip |
|||||||
|
Below 1 GHz |
(1-8.4) GHz |
14.5-15.5 GHz |
Below 1 GHz |
(1-8.4) GHz |
14.5-15.5 GHz |
Below 1 GHz |
(1-8.4) GHz |
14.5-15.5 GHz |
|
|
1 |
- |
0.7 |
1.0 |
- |
11.0 |
3.8 |
- |
3.7 |
4.0 |
|
2 |
- |
4.1 |
2.4 |
- |
1.1 |
3.8 |
- |
4.1 |
3.7 |
|
3 |
- |
3.3 |
3.8 |
- |
10.5 |
3.8 |
- |
4.3 |
3.3 |
|
4 |
13.6 |
7.2 |
3.6 |
5.8 |
5.6 |
2.6 |
15.1 |
7.8 |
3.3 |
|
5 |
- |
10.8 |
3.8 |
- |
1.5 |
1.0 |
- |
11.7 |
3.3 |
|
6 |
- |
9.1 |
2.4 |
- |
1.4 |
1.0 |
- |
10.1 |
3.7 |
|
7 |
- |
0.7 |
1.0 |
- |
1.3 |
1.0 |
- |
2.9 |
4.0 |
|
8 |
2.4 |
0.6 |
1.0 |
5.6 |
6.2 |
2.6 |
4.9 |
4.2 |
4.0 |
Note: For below 1GHz, the model is only applicable for 2-antenna system with antenna location index 4 and 8.
Note: The selection of number of antenna and antenna index will be determined as part of the assumption for simulation.
Agreement
For the modelling of spatial non-stationarity, if the unified visible probability and visibility region based approach is adopted, for the Step 1 (whether a cluster is impacted by SNS):
·
In UMa, the distribution of
is
determined as: 
;
R1-2503026 Summary#3 of channel model adaptation and extension Moderator (ZTE)
From Thursday session
Agreement
For near-field channel, the scaling factor (
) used to generate the 
is:
non-direct paths, 
.
non-direct paths:
;
Agreement
For near-field channel, to generate
the 
for the 
non-direct paths, the distribution
of scaling factor 
is:
Conclusion
For near-field channel, to generate
the 
for non-direct paths:
) of is defined.
Agreement
In the Indoor office scenario for
near-field channel, = 4.
Agreement
In
the Indoor factory scenarios, to generate the non-direct path for the near-field
channel model:
= 4; non-direct paths, the distribution
of scaling factor 
is a Beta distribution with 
Agreement
For the modelling of spatial
non-stationarity, if the unified visible probability and visibility region
based approach is adopted, to generate the power attenuation factor 
for
clusters with SNS, the value of C (i.e., the roll-off factor between the
visible and invisible regions) is:
Agreement
For the modelling of spatial non-stationarity, the visibility region, i.e., a rectangle, is randomly located at a corner of the antenna array by following approach:
R1-2503027 Summary#4 of channel model adaptation and extension Moderator (ZTE)
From Friday session
Agreement
For the calibration parameters for the near-field channel,
|
Parameter |
Values |
|
|
Scenarios |
UMi-street Canyon, Indoor-office (open office) |
|
|
Carrier Frequency |
7 GHz (Optional) 15 GHz |
|
|
Bandwidth |
20 MHz |
|
|
BS antenna height |
UMi-street Canyon: 10m Indoor-office: 3m |
|
|
BS antenna downtilt |
102 degrees for UMi-street Canyon 180 degrees for indoor (i.e., array panel downward facing) |
|
|
BS Tx power |
44 dBm for UMi-Street Canyon 24 dBm for Indoor |
|
|
BS antenna configurations and port mapping |
For UMi scenario: Config 1 for 7GHz · (M, N, P, Mg, Ng; MP, NP) = (24, 32, 2, 1, 1; 8, 32), dH = 0.5λ, dV = 0.7λ; · (Optional) (M, N, P, Mg, Ng; MP, NP) = (64, 16, 2, 1, 1; 16, 16), dH = dV = 0.5λ Config 2 for 15GHz · (M, N, P, Mg, Ng; MP, NP) = (64, 16, 2, 1, 1; 8, 16), dH = dV = 0.5λ
For Indoor-office scenario for 7GHz: · (M, N, P, Mg, Ng; MP, NP) = (8, 24, 2, 1, 1; 8, 8), dH = dV = 0.5λ
Mp and Np are the number of vertical, horizontal TXRUs within a panel and polarization |
|
|
BS Polarized antenna modeling |
Model-2 in Clause 7.3.2 of TR38.901 |
|
|
UE Location |
Outdoor/indoor |
UMi-street Canyon: 100% outdoor Indoor-office: 100% indoor |
|
LOS/NLOS |
100% LOS |
|
|
UE antenna height |
UMi-street Canyon: 1.5m Indoor-office: 1m |
|
|
UT antenna configurations |
Config A: Mg = Ng = 1, M = 2, N = 1, P = 2, dH = dV = 0.5λ Config B: 4 antenna port with single/linear polarization for calibration based on handheld device antenna model using candidate antenna locations (1,7,3,5) as described in Clause 7.3 |
|
|
UT antenna pattern |
Isotropic |
|
|
UT Polarized antenna modelling |
For UT Config A, Model-2 in Clause 7.3.2 of TR38.901 For UT Config B, following the Clause 7.3.2 of TR38.901 |
|
|
Applicability of Nearfield Modeling |
Component of NF channel to be considered: - Phase of Direct path - Phase of Non-direct path, applied only at the BS side (optionally) |
|
|
Calibration method |
Drop multiple users in
the multiple cells at the fixed horizontal distance Z from the BS, and
collect the metric for For UMi-street Canyon: Z = 10, 30, 50, 100 m (optional) Z = 20, 40, 80 m
For Indoor: Z = 0, 2, 6, 10 m (optional) Z = 4, 8 m
|
|
|
Metric |
CDF of the ratio between the 2nd, 3rd ,4th, ..., xth (smallest) PRB singular value and the 1st PRB (largest) singular value (serving cell) at t=0 plotted in 10*log10 scale. · Note-1: The PRB singular values of a PRB are the eigenvalues of the mean covariance matrix in the PRB. · Note-2: The value of x is the minimum value of (number of BS antenna ports, number of UT antenna ports) |
|
Agreement
The following assumption is used for UE side SNS calibration:
Agreement
The following assumption is used for BS side SNS calibration:
Please refer to RP-234018 for detailed scope of the WI.
R1-2504896 Session notes for 9.8 (Study on channel modelling enhancements for 7-24GHz for NR) Ad-Hoc Chair (CMCC)
Endorsed and incorporated below.
[121-R19-7-24GHz] Email discussion on channel modelling for 7-24GHz – Daewon (Intel)
- To be used for sharing updates on online/offline schedule, details on what is to be discussed in online/offline sessions, tdoc number of the moderator summary for online session, etc
Agreement
LS R1-2504941 is endorsed.
R1-2503605 Draft CR for Rel-19 7-24GHz Channel model Intel Corporation, ZTE Corporation
R1-2503747 LS to CTIA MOSG on TR38.901 updates
R1-2504941 LS to CTIA MOSG on TR38.901 updates
Agreement
• Update the reference thickness of plywood to 1.75 cm.
Agreement
Add the following note to UMi and UMa pathloss:
· UMi and UMa pathloss formula converges for different frequencies when distances beyond the breakpoint distance is applied.
Conclusion
Angular spread parameters for InF scenarios are not studied further due to lack of measurement data inputs.
Agreement
· Confirm the working assumption (made in RAN1#120b) for absolute delay parameters of RMa scenario.
Agreement
· Adopt the following update for scaling factor for ZOA and ZOD generation
|
# clusters |
8 |
10 |
11 |
12 |
14 |
15 |
19 |
20 |
25 |
|
|
0.889 |
0.957 |
1.031 |
1.104 |
1.1072 |
1.1088 |
1.184 |
1.178 |
1.282 |
Agreement
Agreement
• Confirm the working assumption (made in RAN1#120b) absolute delay parameters of SMa scenario.
Agreement
Agreement
· Clarify outdoor UT for SMa are in-car deployments and subject to car O2I penetration loss.
Agreement
· For SMa scenario calibration, use value of 0% vegetation for LOS probability determination.
Agreement
• Revise d2D to d2D-out for LOS probability equations of SMa scenario.
Agreement
Agreement
·
For SMa, 
is minimum of two independently generated uniformly distributed
variables between 0 and 25 m for UT considered to be inside commercial buildings,
and between 0 and 10 m for UT considered to be inside residential buildings.
Agreement
· Low Loss, High loss, and Low Loss A penetration model are applicable for SMa.
· Low Loss A penetration model is used for SMa scenario calibration purposes.
Agreement
· Confirm Working Assumption (made in RAN1#120b) for penetration loss model (low loss A model) applicable for SMa.
Agreement
Agreement
· Add the following example to SMa description in Section 6.2
· Example will captured as “[Tx height: 35m, Rx height with reference to floor height: 1.5-2.5m, ISD: 1299m, 1732m]”
Agreement
Agreement
· Confirm working assumption (made in RAN1#120b) for channel bandwidth for large scale and full calibration and remove brackets.
Agreement
Agreement
Agreement
Observation:
· Measurement of ZSD for rural macrocell deployments from a source observed lower ZSD values compared to ZSD for RMa at shorter distances.
· Measurement of ASD for rural macrocell deployments from a source observed lower ASD values compared to ASD for RMa.
Conclusion:
· No consensus to update RMa ASD and ZSD parameters due to lack of measurement data for each of LOS, NLOS, and O2I cases.
Agreement
· Introduce an optional Mmin parameter to potentially bound the number of rays per clusters for equation (7.6-8) of intra-cluster angular and delay spreads.
|
|
Conclusion:
· No consensus to update the number of clusters for InH, UMi, and UMa.
· It was observed that number of clusters reported (either from measurements and simulation) from Rel-14 SI and Rel-19 is smaller than what is specified in TR38.901. The number of cluster values were unchanged despite the observed measurement/simulated results due to concerns on impact to overall channel characteristics and applicability of observed measurement/simulated results to the cluster modeling in TR38.901.
Agreement
Agreement
Agreement
Agreement
· Revise the Rx heigh example for UMa, UMi, and SMa in scenario description in Section 6.2 as follows:
o UMi
§ “Example: [Tx height:10m, Rx height with reference to floor
height: 1.5-2.5 m,
ISD: 200m]”
o UMa
§ “Example: [Tx height:25m, Rx height with reference to floor
height: 1.5-2.5 m, ISD: 200m, 500m]”
o SMa
§ “Example: [Tx height: 35m, Rx height with reference
to floor height: 1.5-2.5m, ISD:
1299m, 1732m]”
Agreement
· Confirm the working assumption for the following SMa parameters
|
Scenarios |
Sma (7 – 24 GHz) |
||
|
LOS |
NLOS |
O2I |
|
|
Number of clusters N |
15 |
14 |
14 |
Agreement
· Update “UT array orientation” in TR 38.901 as “UT orientation”
Agreement
Agreement
· Add the following note to SMa description
NOTE 1: SMa scenarios with ISDs between 1200-1800m can be used for evaluations
Agreement
Clarify downtilt simulation assumption parameter for calibrations as follows:
· For SMa,
o downtilt refers to mechanical downtilt and no electrical downtilt applies.
o Update the “Working assumption of 93 degree” to 92 degree for downtilt for SMa deployment scenario for ISD = 1732m.
· For InH,
o Downtilt refers to mechanical downtilt and no electrical downtilt applies
· For UMa and UMi,
o No mechanical downtilt applies, and downtilt values refer to electrical downtilt
Agreement
· Update the reference orientation of the handheld UE as follows:
Agreement
Agreement
Amend the previous agreement (from RAN1 #120-bis) as follows:
·
Each
polarized field component of the reference radiation pattern 
and 
should be rotated according to the orientation and polarization direction of the each of
UE antennae to get 
, 
and based on the orientation of the UE in the global coordinate system to get 
and 
using the methods already specified in TR
38.901, equation (7.3-3)/(7.1-11).
Observation
· The number of clusters for UMi was taken from Winner II which appears to have use the 95%-tile value from the CDF of the number of clusters assuming K-mean clustering algorithm for counting number of clusters.
· For UMa NLOS case, the 90%-tile and maximum number of cluster measurements from sources was observed to be aligned.
· For UMa LOS and UMi LOS cases, the 90%-tile and maximum number of cluster measurements from sources was observed to be marginally higher than the values in current TR38.901 by 1 to 6 clusters.
· For InH LOS, InH NLOS, UMi NLOS, the 90%-tile and maximum number of cluster measurements from sources was observed to be marginally lower than the values in current TR38.901 by 1 to 6 clusters.
· For UMa LOS/NLOS, UMi LOS/NLOS, and InH LOS/NLOS cases, the mean number of cluster measurements were significantly lower than values in current TR38.901.
Agreement
For section 7.6, introduce an optional modeling component for number of clusters
· Optional modeling components are used to evaluate a channel propagation environment with diverse cluster ranges.
Table: Number of clusters for the diverse cluster environment
|
Scenario |
LOS |
NLOS |
O2I |
|
UMi |
D1: 6, D2: 12 |
D1: 6, D2: 19 |
D1: 6, D2: 12 |
|
UMa |
D1: 10, D2: 12 |
D1: 15, D2: 20 |
D1: 10, D2: 12 |
|
InH |
D1: 7, D2: 15 |
D1: 6, D2: 19 |
N/A |
· Number of clusters is chosen between a closed range of [D1, D2]. The selection of the number of cluster for each link is determined by the user. This is used as the number of clusters in Table 7.5.6-Part 1 and Part 2.
· Rapporteur to reference METIS channel model for this optional modeling component.
· Note: D1 is the average of the mean of the number of clusters from the source data. D2 is the values from 38.901
· Note: O2I values for D1 and D2 is the minimum of LOS or NLOS value
Agreement
Introduce additional cluster angle scaling factors as follows:
Table 7.5-2: Scaling factors for AOA, AOD generation
|
# clusters |
4 |
5 |
6 |
7 |
8 |
10 |
11 |
12 |
14 |
15 |
16 |
19 |
20 |
25 |
|
|
0.779 |
0.860 |
0.921 |
0.973 |
1.018 |
1.090 |
1.123 |
1.146 |
1.190 |
1.211 |
1.226 |
1.273 |
1.289 |
1.358 |
Table 7.5-4: Scaling factors for ZOA, ZOD generation
|
# clusters |
6 |
7 |
8 |
10 |
11 |
12 |
14 |
15 |
16 |
19 |
20 |
25 |
|
|
0.788 |
0.847 |
0.889 |
0.957 |
1.031 |
1.104 |
1.1072 |
1.1088 |
1.1276 |
1.184 |
1.178 |
1.282 |
Agreement
Note: The model is at least applicable for model-2 for antenna polarization modeling.
Agreement
· Add new antenna Config C (with BS config 4) for 15 GHz for UT as optional configuration as part of full calibration assumption
o (optional) Config C for 15 GHz: 16 antenna port with dual polarization based on handheld device antenna model using feasible candidate antenna locations in (1,2,3,4,5,6,7,8) as described in Clause 7.3.
o Note: other UT configuration are not applicable for 15 GHz.
Agreement
· Copy the following summary of observations, conclusions, and agreements to the cover sheet of the measurement data source Tdoc, intended to be captured as reference to the TR.
|
Based on measurement data provided, RAN1 concludes that following channel modeling parameters are validated and no updates to the TR are made. · Pathloss o InH-Office LOS and NLOS o RMa LOS and NLOS o InF LOS and NLOS o UMi LOS and NLOS · Delay Spread o InH LOS and NLOS · Shadow fading o InH LOS and NLOS o UMi NLOS · Angular spread o UMa LOS ZSD o UMa NLOS ZSD
For the following channel modeling parameters, sources have observed both consistent and different measurements compared with model in TR38.901 v18.0.0. Due to lack of consensus, the following channel modeling parameters are not updated. · Pathloss o UMa LOS and NLOS · Delay spread o InF LOS and NLOS · Angular spread o ASD, ASA, ZSA, and ZSD of InH LOS and NLOS o ZSD of UMi LOS and NLOS · Shadow fading o UMi LOS While measurement of ZSD for rural macrocell deployments from a source observed lower ZSD values compared to ZSD for RMa at shorter distances, and measurement of ASD for rural macrocell deployments from a source observed lower ZSD values compared to ASD for RMa, there was no consensus to update RMa ASD and ZSD parameters due to lack of measurement data for each of LOS, NLOS, and O2I cases. For the following channel modeling parameters, RAN1 has identified necessary updates at least for 6 – 24 GHz frequency range. The updated parameter was generated using all measurement and ray tracing data set from Rel-14 SI and (current) Rel-19 SI. The data points were divided into 3 groups, below 6 GHz, 6 to 24 GHz, and above 24 GHz and weighted for processing. The data sets for each group was used to perform weighted least square curve fit. If a group has fewer data points, higher weight per data point is calculated. All points within a group have same weight. Sum of weights for all groups is equal to 1. Each group is given equal weightage. · Delay spread o UMi LOS and NLOS o UMa LOS and NLOS · Angular spread o ASA, ASD, ZSA of UMi LOS and NLOS o ASA, ASD, ZSA of UMa LOS and NLOS o Cluster ASD of UMa LOS, NLOS, and O2I o ASD of UMa O2I
For ASD of UMa O2I scenario, the update parameters were generated from scaling of updated NLOS UMa O2I value with the ratio of NLOS UMa NLOS and O2I measurement data fit from (current) Rel-19 SI at 3.7 GHz. UMa O2I ASD values of Rel-14 TR38.901 used values from UMa O2I ASD values of TR36.873. UMa O2I ASD values of TR36.873 used UMi O2I ASD values from ITU-RM.2135-1. IMT-2020 modeling used the same values from TR36.873. TR25.996 does not contain UMa O2I values. The UMi O2I ASD parameters were derived from Winner II report. For Cluster AoD spread of UMa LOS, NLOS, and O2I scenarios, the update parameter for LOS and NLOS was generated using all measurement and ray tracing data set from Rel-14 SI and (current) Rel-19 SI and dividing the data points into 3 groups, below 6 GHz, 6 to 24 GHz, and above 24 GHz, and weighting the data sets for each group to perform weighted least square curve fit. If a group has fewer data points, higher weight per data point is calculated. All points within a group have same weight. Sum of weights for all groups is equal to 1. Each group is given equal weightage. The update parameters were generated from scaling of updated NLOS UMa O2I value with the ratio of NLOS UMa NLOS and O2I measurement data fit from (current) Rel-19 SI at 3.7 GHz. The number of clusters for UMi was taken from Winner II which used the 95% CDF of the number of clusters assuming K-mean clustering algorithm for counting number of clusters. For material penetration loss model, IRR glass penetration loss model was updated based on single coating for IRR glass. For other materials, standard multi-panel glass, concrete, and wood, model was not updated. However, reference thickness of the materials were clarified. New material penetration loss model for plywood has been agreed. Angle scaling and shifting for CDL based channel model for link-level evaluations was corrected and updated.
The number of clusters for UMi was taken from Winner II which appears to have use the 95%-tile value from the CDF of the number of clusters assuming K-mean clustering algorithm for counting number of clusters. For UMa NLOS case, the 90%-tile and maximum number of cluster measurements from sources was observed to be aligned. For UMa LOS and UMi LOS cases, the 90%-tile and maximum number of cluster measurements from sources was observed to be marginally higher than the values in current TR38.901 by 1 to 6 clusters. For InH LOS, InH NLOS, UMi NLOS, the 90%-tile and maximum number of cluster measurements from sources was observed to be marginally lower than the values in current TR38.901 by 1 to 6 clusters. For UMa LOS/NLOS, UMi LOS/NLOS, and InH LOS/NLOS cases, the mean number of cluster measurements were significantly lower than values in current TR38.901.
For other fast fading channel model parameters not mentioned above, no observation and conclusions are made due to lack of measurement data inputs.
Beyond changes to the existing channel model, the following new components were added: · new deployment scenario, suburban macro (SMa), · new antenna model for handheld UT and consumer premise equipment (CPE) UT, · absolute time of arrival modeling for InH, UMi, UMa, RMa, and SMa, · nearfield channel propagation, · spatial non-stationarity modeling for BS and UT. |
Agreement
· Copy the excel sheet in R1-2504913 as additional tab sheets of the measurement data source excel file, intended to be captured as reference to the TR.
Agreement
· R1-2504696 to be captured as reference for TR38.901 when endorsed.
Note: R1-2504696 contains the latest update of measurement data sources for channel model as part of the Rel-19 channel modeling enhancements for 7-24 GHz SI.
Post Email discussion for draft&final CR for TR38.901 (26th -28th, May)
R1-2504702 Summary #3 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
R1-2504701 Summary #2 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
R1-2504700 Summary #1 of discussions for Rel-19 7-24 GHz Channel Modeling Validation Moderator (Intel Corporation)
R1-2503256 Considerations on the 7-24GHz channel model validation Huawei, HiSilicon
R1-2503374 Views on channel model validation of TR38.901 for 7-24GHz vivo, BUPT
R1-2503439 Remaining Details of Evaluation of FR3 Channel Modeling InterDigital, Inc.
R1-2503578 Discussion on channel model validation of TR38.901 for 7 - 24 GHz Samsung
R1-2503606 Discussion on channel modeling verification for 7-24 GHz Intel Corporation
R1-2503620 Discussion on validation of channel model Ericsson
R1-2503633 Discussion on the channel model validation ZTE Corporation, Sanechips
R1-2503653 Discussion on channel model validation of TR38.901 for 7-24GHz BUPT
R1-2503762 Discussion on Channel Model Validation of TR38.901 for 7-24GHz SK Telecom
R1-2503805 Views on channel model validation for 7-24GHz CATT
R1-2503962 Views on Channel Model Validation Sharp
R1-2503993 Channel model validation of TR 38.901 for 7-24 GHz NVIDIA
R1-2504006 Channel model validation for 7-24 GHz Lenovo
R1-2504147 Discussion on calibration results ETRI
Late submission
R1-2504338 Validation of Channel Model Apple
R1-2504368 Discussion on Validation of the Channel Model in 38901 AT&T
R1-2504406 Channel Model Validation of TR38.901 for 7-24 GHz Qualcomm Incorporated
R1-2504512 Discussion on channel model validation for 7-24 GHz NTT DOCOMO, INC.
R1-2504548 Measurements of the angular spreads in urban and suburban macrocells Vodafone, Ericsson
R1-2504629 Discussion of channel model validation of TR38.901 for 7-24GHz Sony
R1-2504631 Discussion on Channel model validation of TR38.901 for 7-24GHz Nokia
R1-2504650 Measurements of the angular spreads in urban, suburban, and rural macrocells BT plc, Ericsson
Including near-field propagation and spatial non-stationarity
Agreement
For the modelling of spatial non-stationarity, if the unified visible probability and visibility region based approach is adopted:
l To calculate the power attenuation factor for
the clusters with SNS, the definition of 
in RAN1#120bis agreement is revised as:
·
The 
denotes the coordinate of the antenna element out of VR region.
l
To generate the visibility
region, the 
refers to the power of cluster generated by (7.5-6) in dB scale. In
the case of LOS condition, the LOS path is considered as an additional cluster,
and the power ratio of the LOS path to NLOS clusters follows the Ricean
K-factor generated in Section 7.5.
Agreement
The following value in the agreement of RAN1#120bis is revised as:
·
The
probability of VR at the upper part of antenna array is [0.8] 0.5 and the probability of
VR at the lower part of antenna array is [0.2] 0.5;
Agreement
Agreement
To
calculate the absolute time of arrival for 
and 
, the 
refers to the excess
delay, which is only applicable
·
when
it’s not in the LOS case, and generated according to
the Section 7.6.9, otherwise is assumed to be 0.
Agreement
For the modelling of spatial non-stationarity at UE side, the value of the attenuation values for “Head and one hand grip” in the agreement made in RAN1#120bis is revised in Red:
|
Antenna index |
Power attenuation (dB) |
||
|
Head and one hand grip |
|||
|
Below 1 GHz |
(1-8.4) GHz |
14.5-15.5 GHz |
|
|
1 |
- |
3.7 |
4.0 |
|
2 |
- |
|
3.7 |
|
3 |
- |
4.3 |
3.3 |
|
4 |
15.1 |
7.8 |
3.3 |
|
5 |
- |
11.7 |
3.3 |
|
6 |
- |
10.1 |
3.7 |
|
7 |
- |
2.9 |
4.0 |
|
8 |
4.9 |
4.2 |
4.0 |
Agreement
For the modelling of spatial non-stationarity, if the unified visible probability and visibility region based approach is adopted, the following parameters are adopted:
|
Scenario |
A |
B |
|
|
C |
|
|
|
|
|
||||||
|
RMa |
0.16 |
0.74 |
60 |
|
13 |
0.14 |
0.08 |
|
SMa |
0.06 |
0.56 |
23 |
|
13 |
0.24 |
0.07 |
|
InF |
0 |
0.57 |
NA |
|
13 |
0.32 |
0.06 |
Agreement
For the modelling of SNS, capture the following observation & recommendation in the CR:
· In Rel-19 Channel Model study,
· the VR/VP based approach is recommended to be used in the simulation except for the case where it is not applicable
· From the perspective of the simulation requirements:
· The physical blocker based approach can be considered for simulation where physical accuracy and consistency is desired.
· The visibility region-based approach (i.e., Stochastic-based approach) can be considered for simulation where computational efficient SnS modelling is desired.
· From the perspective of the model mechanism:
· To reflect the SNS phenomenon due to partial blockage, the physical blocker-based approach can be considered in simulation.
· To reflect the SNS phenomenon due to incomplete scattering, the visible probability and visibility region-based approach (i.e., Stochastic-based approach) can be considered in simulation.
Agreement
For the following agreement made in RAN1#121, it’s to confirm that the “new blocker type/size” is only applicable for SNS.
|
Agreement For the modelling of spatial non-stationarity, if physical blocker-based approach is adopted, at least for blockage model B, the following new blocker type/size can be introduced in the Table 7.6.4.2-5 in TR 38.901:
· FFS: the value of X and Y for the blocker dimensions of building edge is needed. · FFS: the details related to the user hand/head:
· FFS:The details of blockage model B to implement the impact of user hand and head. · FFS: The location of the user hand/head |
Agreement
For the terminology used in the CR:
· Keep the terminology “Near field channel model” with following updates, capturing the following TP in section 6.4:
|
< Unchanged text omitted > - Support near-field channel propagation (i.e., characteristics of spherical wavefront) and spatial non-stationarity < Unchanged text omitted > |
R1-2504755 Summary#3 of the channel model adaptation and extension Moderator (ZTE)
R1-2504754 Summary#2 of the channel model adaptation and extension Moderator (ZTE)
R1-2504753 Summary#1 of the channel model adaptation and extension Moderator (ZTE)
R1-2503257 Considerations on the 7-24GHz channel model extension Huawei, HiSilicon
R1-2503375 Views on channel model adaptation/extension of TR38.901 for 7-24GHz vivo, BUPT
R1-2503427 Discussion on channel modelling adaptation/extension for 7-24GHz LG Electronics
R1-2503440 Remaining Details of Extension of FR3 Channel Modeling InterDigital, Inc.
R1-2503579 Discussion on channel model adaptation/extension of TR38.901 for 7 - 24 GHz Samsung
R1-2503621 Discussion on adaptation and extension of channel model Ericsson
R1-2503634 Discussion on the channel model adaptation and extension ZTE Corporation, Sanechips
R1-2503647 Discussion on channel model adaptation/extension Intel Corporation
R1-2503654 Discussion on modeling near-field propagation and spatial non-stationarity in TR38.901 for 7-24GHz BUPT, CMCC, X-Net
R1-2503714 Discussions on FR3 Channel Modelling Lekha Wireless Solutions
R1-2503747 LS to CTIA MOSG on TR38.901 updates Spirent Communications, Keysight Technologies
R1-2503806 Views on channel model adaptation/extension for 7-24GHz CATT
R1-2503994 Channel model adaptation of TR 38.901 for 7-24 GHz NVIDIA
R1-2504222 Channel model adaptation and extension for 7-24GHz OPPO
R1-2504339 Channel Model Adaptation and Extension of TR38.901 for 7-24 GHz Apple
R1-2504407 Channel Model Adaptation/Extension of TR38.901 for 7-24GHz Qualcomm Incorporated
R1-2504630 Discussion of channel model adaptation/extension of TR38.901 for 7-24GHz Sony
R1-2504632 Discussion on Channel model adaptation/extension of TR38.901 for 7-24GHz Nokia
) in [deg]
