3GPP TSG-RAN WG1 Meeting #121	                           R1-2503250
St Julian’s, Malta, 19 – 23 May, 2025

Agenda Item:	9.15.13
Source:	Huawei, HiSilicon
Title:	UE features for LTE based 5G broadcast Phase 2
Document for:	Discussion and Decision

Conclusion
We discussed the UE capability of time-interleaving and frequency-interleaving specified for LTE based 5G broadcast Phase 2 based on the agreements reached so far. What signalling carrying the UE capability is also discussed. The proposals are summarized here:
Proposal 1: For FG4-1 of time interleaving, UE reports the maximum supported value of M with candidate values of {16,32} and the maximum supported value of N with candidate values of {8,16}.
Proposal 2: No need to define separate FGs of time-interleaved broadcast for different numerologies.

Proposal 3: Including the UE capabilities of time-interleaving and frequency-interleaving into both UE-EUTRA-Capability and MBMSInterestIndication. 
Implementing the capability into MBMSInterestIndication is up to RAN2. 

Proposal 4: Refer to the following for the capability reporting in UE-EUTRA-Capability:

3GPP TSG RAN WG1 #121			R1-2503336
St Julian’s, Malta, May 19th - 23th , 2025

Source:	ZTE Corporation, Sanechips
Title:	Discussion on UE features for Rel-19 LTE based 5G broadcast
Agenda item:	9.15.13
Document for:	Discussion and Decision

Conclusion
In this section, our proposals on UE features for LTE based 5G broadcast operation in Rel-19 are summarized.
Proposal 1: Introduce the following Rel. 19 UE feature:

3GPP TSG-RAN WG1 Meeting #121	 											R1-2503603
St Julians, Malta, May 19th – 23rd, 2025

Agenda item:		9.15.13
Source:				Samsung
Title:					UE features for Rel-19 LTE-based 5G Broadcast
Document for:	    Discussion & Decision
1 

Conclusion
Based on the discussion above, request RAN1 to consider the following proposals:
Proposal 1: UE capability for Rel-19 LTE-based 5G Broadcast feature support with parameters for maximum supported values of M and N is optional with capability signalling.


Table 1: UE features for Rel-19 LTE-based 5G Broadcast


Proposal 2: MBMS Interest Indication message includes a Rel-19 Information Element to convey UE’s interest and baseband resource capability corresponding to Rel-19 LTE-based 5G Broadcast. Rel-19 IE in MBMS Interest Indication message carries following parameters utilized for receiving Rel-19 LTE-based 5G Broadcast service(s):
Frequency 
Sub-carrier spacing  = {2.5 kHz, 1.25 kHz}
Bandwidth = {n6, n15, n25, n30, n35, n40, n50, n75,n100}
Currently utilized value of M (i.e. Pmch-TimeInterleavingUsed-M) = {n4, n8, n16, n32…}

3GPP TSG RAN WG1 #121	                                   					       												                                    R1-2504373
St Julian’s, Malta, May 19th – 23th, 2025

Agenda Item:	9.15.13
Source:	Moderator (AT&T)
Title:	Summary of UE features for LTE based 5G broadcast Phase 2
Document for:	Discussion/Decision

Conclusion
Agreements reached during RAN1 #121 as part of this agenda item are summarized in [7]. 

3GPP TSG RAN WG1 #121			R1-2504431
St Julian’s, Malta, May 19th – 23th, 2025

Agenda item:	9.15.13
Source: 	Qualcomm Incorporated
Title: 	UE features for LTE based 5G Broadcast
Document for:	Discussion and Decision
Features for time and frequency interleaving
In this contribution, we provide our views on UE features for time and frequency interleaving in 5G Broadcast, along with the necessary details that are relevant for these features.
Proposal 1: Define a UE feature that indicates support of Frequency Interleaving for 5G Broadcast
The feature has a granularity of “per band”, “per numerology”
The feature is optional with capability signaling.
Proposal 2: For the UE feature on time interleaving agreed in RAN1#120-bis
For component 4, “Maximum TBS supported in a TTI for MCH with time interleaving” (Alt 1) is specified
The feature has a granularity of “per OFDM numerology”
Based on the UE category, the UE indicates the maximum TBS supported in a TTI for MCH with time interleaving, from a set of candidate TBSs. FFS candidate TBSs
Conclusion
In this contribution we presented our views on UE features for LTE-based 5G Broadcast Phase 2. Our proposals and observations are summarized below:
Proposal 1: Define a UE feature that indicates support of Frequency Interleaving for 5G Broadcast
The feature has a granularity of “per band”, “per numerology”
The feature is optional with capability signaling.
Proposal 2: For the UE feature on time interleaving agreed in RAN1#120-bis
For component 4, “Maximum TBS supported in a TTI for MCH with time interleaving” (Alt 1) is specified
The feature has a granularity of “per OFDM numerology”
Based on the UE category, the UE indicates the maximum TBS supported in a TTI for MCH with time interleaving from a set of candidate TBSs. FFS candidate TBSs

TDoc file conclusion not found

3GPP TSG RAN WG1 #121			R1-2504651
Malta, MT, 19th – 23rd May, 2025

Agenda item:	9.15.13
Source: 	EBU
Title: 	UE feature list for Rel-19 LTE-based 5G Broadcast after RAN1#120
Document for:	Discussion and Decision

TDoc file conclusion not found

3GPP TSG RAN WG1 #121	                                   					       												                                   R1-2504929
St Julian’s, Malta, May 19th – 23th, 2025

Source:	Ad-Hoc Chair (AT&T)
Title:	Session Notes of AI 9.15.13
Agenda Item:	9.15.13
Document for: 	Endorsement

9.15.13 UE features for LTE based 5G broadcast Phase 2

Agreement: Adopt the following changes highlighted in chromatic fonts, while keeping the yellow highlighting, if any, as shown


Agreement: Introduce the following Rel. 19 UE feature (yellow highlighting, if any, shows text that’s not yet agreed)



R1-2503250	UE features for LTE based 5G broadcast Phase 2	Huawei, HiSilicon
R1-2503336	Discussion on UE features for Rel-19 LTE based 5G broadcast	ZTE Corporation, Sanechips
R1-2503603	UE features for LTE-based 5G broadcast	Samsung
R1-2504373	Summary of UE features for LTE based 5G broadcast Phase 2	Moderator (AT&T)
R1-2504431	UE features for LTE based 5G Broadcast	Qualcomm Incorporated
R1-2504651	UE feature list for Rel-19 LTE-based 5G Broadcast after RAN1#120	EBU

TDoc file conclusion not found