TDoc file unavailable

3GPP TSG RAN WG1 #121		                                    R1-2503604
St Julian’s, Malta, May 19th – 23th, 2025
Agenda item:		9.15.14
Source:			Samsung
Title:			UE features for Rel-19 TEI
Document for:		Discussion and decision

Conclusion





In this contribution, the following observation and proposals are given:
Proposal 1. Support the following FG supporting relevant functionality of the above agreement.

3GPP TSG RAN WG1 #121	R1-2504278
St. Julians, Malta, 19th – 23rd May, 2025

Agenda item:		9.15.14
Source:	MediaTek Inc., Nokia, Apple, Ericsson, NTT DOCOMO, Orange 
Title:	TEI19 UE features
Document for:		Discussion and Decision

Proposal
The following proposals are made:
Proposal: Agree on the UE capability description provided in the Annex of this document.

3GPP TSG RAN WG1 #121																		               R1- 2504362
St Julian’s, Malta, May 19th – 23th, 2025

Agenda item:	9.15.14
Source: 	Apple Inc.
Title: 	Clarification on UE features for Rel-19 TEI SRSCS_ULTxSwitch
Document for:	Discussion/Decision

Discussion
In RAN1#120, a Rel-19 TEI proposal was endorsed to support concurrent configuration of SRS carrier-based switching and uplink Tx switching, as follows
Agreement
To resolve ambiguities with concurrent configuration of SRS-CS and ulTxswitch in a case where a UE configured with SRS CS on target CC and its “switch-from” CC on CC2 and configured with UL Tx switching operation for UL CC2 and at least one UL CC1 
Confirm that the prioritization rules in 38.214 Sec. 6.2.1.3 are applied between target and CC1, regardless of SRS-AS antenna port configuration on target CC, if UE indicates based on srs-SwitchingAffectedBandsListNR-r17 that SRS-CS on target impacts CC1, where CC1 is one of the CC(s) which may share Tx chains with source CC. No spec change is needed.
Note: if UE does not indicate srs-SwitchingAffectedBandsListNR-r17, UE can only perform simultaneous transmission when the total number of involved Tx chains for simultaneous transmission on all the bands/carriers is not greater than number of Tx chains supported by the UE for simultaneous UL transmission. No spec change is needed. 
If the UE is under the operation state in which all Tx chains are available at the source CC, the required switching time before the beginning of SRS-CS transmission on target CC is SRS-SwitchingTimeNR. Otherwise, the required switching time before the beginning of SRS-CS transmission on target CC is indicated by a UE capability. Details about UE capability will be discussed in UE feature session.
The existing scheduling restriction of maximum one switching per reference slot for UL Tx switching is also taking into account the triggered SRS CS
After SRS transmissions within an SRS resource set is done, if UE is indicated to transmit on CC1, the required switching time between the end of SRS-CS transmission on target CC and start of UL transmission on CC1 is indicated by the UE capability defined above. Otherwise, it is assumed for the determination of any future switching time that all Tx chains are returned to the source CC, and the RF tuning time to switch from target to source will be SRS-SwitchingTimeNR

In RAN1#120, a UE capability corresponding to that feature was agreed in UE FG 67-5, as follows. 
Agreement: Introduce the following Rel. 19 UE FGs (yellow highlighting, if any, shows text that’s not yet agreed)


Afterward, we received some offline clarification questions from (RAN2 TS 38.306 rapporteur) on the WGs associated with the prerequisite feature groups, and the applicability of the Note to the Component 1. To address those, we propose the following:
Proposal: UE FG 67-5 is modified for Prerequisite and Note columns, as below with modification in red:

TDoc file conclusion not found

3GPP TSG RAN WG1 #121	                                   					       												                                    R1-2504374
St Julian’s, Malta, May 19th – 23th, 2025

Agenda Item:	9.15.14
Source:	Moderator (AT&T)
Title:	Summary of UE features for Rel-19 TEI and other relevant issues
Document for:	Discussion/Decision

Conclusion
Agreements reached during RAN1 #121 as part of this agenda item are summarized in [8]. 

3GPP TSG RAN WG1 #121																		R1-2504534
St Julian, Malta, May 19th – 23rd, 2025

Source:	NTT DOCOMO, INC.
Title:	Discussion on UE features for Rel-19 TEI
Agenda Item:	9.15.14
Document for: 	Discussion and Decision

Summary
In this contribution, the following is proposed. 
Proposal 1: 
Adopt the following refinements for FG 67-5

3GPP TSG RAN WG1 #121		                  R1-2504578  
Malta, MT, 19th – 23rd May, 2025

Agenda item:	9.15.14
Source: 	EBU
Title: 	UE features for Rel-19 TEI
Document for:	Discussion and Decision

TDoc file conclusion not found

3GPP TSG-RAN WG1 Meeting #121	R1-2504647
St Julian’s, Malta, May 19th – 23rd, 2025

Agenda Item:	9.15.14
Source:	Huawei, HiSilicon
Title:	UE features for CSI-RS active resource counting
Document for:  Discussion and Decision 

Conclusion
This contribution discusses the UE feature regarding the TEI of active resource counting, and has the following proposal.
Proposal 1: Introduce the following FG:

3GPP TSG RAN WG1 #121	                                   					       												                                   R1-2504930
St Julian’s, Malta, May 19th – 23th, 2025

Source:	Ad-Hoc Chair (AT&T)
Title:	Session Notes of AI 9.15.14
Agenda Item:	9.15.14
Document for: 	Endorsement

9.15.14 Others
For discussions on UE features for Rel-19 TEI and other relevant issues.

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 FGs (yellow highlighting, if any, shows text that’s not yet agreed)


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


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



	
R1-2503604	UE features for Rel-19 TEI	Samsung
R1-2504278	TEI19 UE features	MediaTek Inc., Nokia, Apple, Ericsson, NTT DOCOMO, Orange
R1-2504362	Clarification on UE feature for Rel-19 TEI SRSCS_ULTxSwitch	Apple
R1-2504374	Summary of UE features for Rel-19 TEI and other relevant issues	Moderator (AT&T)
R1-2504534	Discussion on UE features for Rel-19 TEI	NTT DOCOMO, INC.
R1-2504578	UE features for Rel-19 TEI	EBU
R1-2504647	UE features for CSI-RS active resource counting	Huawei, HiSilicon

TDoc file conclusion not found