№ files_lp_4_process_2_61952
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Structured technical specification detailing the UE Context Modification procedure for gNB-CU initiated actions, including message definitions, information elements, and interactions with mobility management, QoS flows, and conditional LTM in a 5G NR network context.
Year:
2026
Location:
Goteborg, Sweden
Topic:
5G NR UE Context Management and LTM Procedures
Document Type:
Technical Specification Contribution
Organization:
3GPP TSG-RAN WG3
Authors:
CATT, Nokia, Qualcomm
Intended Audience:
3GPP Members and 5G NR Network Equipment Engineers
Agenda Item:
11.2.2
Period Covered:
February 2026
Message Types Covered:
UE CONTEXT MODIFICATION REQUEST, UE CONTEXT MODIFICATION RESPONSE
Technical References:
TS 38.473, TS 38.401, TS 23.501, TS 38.300, TS 38.331
Procedures Described:
UE Context Modification, DRB setup/modification, Mobility Issue Handling, QoS Flow Monitoring, Transmission Action Handling
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Year:
2020
Region / City:
Online
Topic:
Intra-CU topology adaptation procedure
Document Type:
Technical Report
Organization / Institution:
3GPP TSG-RAN WG3
Author:
CATT, ZTE, HW, KDDI, LG, QC
Target Audience:
Telecommunications engineers, network operators
Period of Validity:
N/A
Approval Date:
N/A
Amendment Date:
N/A
Year:
2026
Region / City:
Gothenburg, SE
Subject:
MRO, intra-CU CLTM
Document Type:
Liaison Statement
Organ / Institution:
3GPP RAN3
Author:
Xufei Dong
Target Audience:
3GPP RAN2
Period of Validity:
Until further notice
Approval Date:
9th - 13th Feb, 2026
Date of Changes:
Not specified
Year:
2026
Location:
Gothenburg Metropolitan Area, Sweden
Event:
3GPP TSG-RAN WG3 Meeting #131
Agenda Item:
12.2.2
Organization:
3rd Generation Partnership Project (3GPP)
Working Group:
TSG-RAN WG3
Source Organization:
Huawei
Document Type:
pCR (proposed Change Request)
Target Specification:
TR 38.745
Specification Version Base:
TR 38.745 V1.1.0 (2026-02)
Technical Domain:
Telecommunications Engineering
Technology Context:
5G New Radio
Topic:
AI/ML-assisted intra-CU LTM optimization
Key Concepts:
Artificial Intelligence, Machine Learning, intra-CU LTM, mobility management, beam selection, uplink synchronization
Input Data Sources:
local node measurements, UE measurement reports, mobility history, radio resource status, UE trajectory prediction
Output Data Elements:
predicted candidate cell and beam, target cell and beam selection, predicted TA values, predicted timing for cell switch and early UL synchronization
Feedback Data:
LTM target cell and beam per switch event, measured TA values, SON reports, actual timing of cell switch and early synchronization
Approval Context:
Agreements reached at RAN3#131
Year:
2026
Region / City:
Gothenburg, SE
Topic:
MRO for intra-CU CLTM
Document Type:
Liaison Statement
Organization / Institution:
3GPP
Author:
RAN3
Target Audience:
RAN2
Action Required:
Feedback from RAN2
Period of Validity:
February 9-13, 2026
Approval Date:
February 9, 2026
Date of Changes:
None
Context:
This document is a liaison statement from RAN3 to RAN2 regarding the MRO for intra-CU CLTM in the context of 5G NR development, seeking feedback from RAN2 on the proposed solutions for outdated TA during reestablishment.
Year:
2025
Region / city:
Goteborg, Sweden
Topic:
Meeting Schedule / Draft Session Plan
Document Type:
Meeting Schedule
Organization:
SA WG2
Author:
Not specified
Target audience:
Not specified
Period of validity:
August 25 – August 29, 2025
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
2026
Location:
Goteborg, Sweden
Document Type:
Meeting agenda
Organization:
3GPP TSG-RAN Working Group 3
Author:
RAN3 Chair
Target Audience:
Delegates and members of 3GPP TSG-RAN WG3
Submission Deadline:
30 January 2026, 07:00 UTC
Meeting Registration Deadline:
2 February 2026, 08:00 UTC
Topics Covered:
Meeting opening, agenda approval, past minutes approval, study items on NR, 6G, AI/ML, ISAC, Ambient IoT, mobility enhancements, XR, antitrust compliance, IT behavior, and contribution procedures
End Date:
13 February 2026
Format:
Face-to-face with 1-way remote access
Type of Source:
Official technical meeting documentation
Year:
2026
Region / City:
Goteborg, Sweden
Topic:
3GPP RAN WG3 Meeting Agenda
Document Type:
Meeting Agenda
Organization:
3GPP
Author:
RAN3 Chair
Target Audience:
3GPP members, delegates
Validity Period:
February 9-13, 2026
Approval Date:
Pending approval
Amendment Date:
Not specified
Year:
2026
Region / City:
Goteborg, Sweden
Theme:
3GPP TSG-RAN WG3 meeting agenda
Document Type:
Agenda
Organization:
3GPP
Author:
RAN3 Chair
Target Audience:
Meeting delegates, 3GPP members
Period of Validity:
9-13 February 2026
Approval Date:
Pending
Modification Date:
Not specified
Meeting Registration Deadline:
2 February 2026, 08:00 UTC
TDoc Submission Deadline:
30 January 2026, 07:00 UTC
Agenda Items:
Multiple, related to meeting proceedings, IPR, antitrust compliance, and technical discussions
Context Description:
Meeting agenda for the 3GPP TSG-RAN WG3 session, detailing administrative and technical topics, submission deadlines, and meeting guidelines.
Year:
2025
Region / City:
Goteborg, SE
Subject:
6G System Architecture
Document Type:
Meeting Agenda
Organization / Institution:
SA WG2
Author:
Not specified
Target Audience:
SA2 Working Group members and contributors
Period of Validity:
Aug 2025
Approval Date:
Not specified
Date of Amendments:
Not specified
Year:
2026
Location:
Goteborg, Sweden
Topic:
Sensing data protocol stacks for 5G networks
Document type:
Technical paper
Organization:
3GPP TSG-RAN3
Authors:
Xiaomi, Ericsson, LG Electronics, Huawei, CATT, Nokia, China Telecom, ZTE, NEC, China Unicom, CMC
Audience:
3GPP members and industry participants
Meeting dates:
9–13 February 2026
Agenda item:
13.2
References:
pCR 38.765
Content:
Comparison of SCTP, GTP-U, and WebSocket-based protocol stacks for sensing data transmission between gNB and SF
Evaluation criteria:
Data volume suitability, reliability, protocol efficiency, standardization impact
Year:
2026
Location:
Goteborg, Sweden
Organization:
3GPP TSG-RAN WG3
Document type:
Agenda
Source:
RAN3 Chair
Deadline for TDoc submission:
30 January 2026, 07:00 UTC
Meeting registration deadline:
2 February 2026, 08:00 UTC
Topics:
LTE, NR, 6G study, AI/ML applications, Integrated Sensing And Communication, Ambient IoT, XR for NR
Intended audience:
3GPP members and delegates
Meeting format:
Face-to-face with one-way remote access
Compliance requirements:
IPR declaration, Antitrust compliance, Responsible IT behavior
Year:
2026
Region / City:
Goteborg, Sweden
Subject:
3GPP TSG-RAN WG3 Meeting Agenda
Document Type:
Agenda
Organ / Institution:
3GPP
Author:
RAN3 Chair
Target Audience:
3GPP delegates
Action Period:
February 9-13, 2026
Approval Date:
N/A
Revision Date:
N/A
Year:
2026
Region / City:
Goteborg, Sweden
Topic:
3GPP TSG-RAN WG3 Meeting Agenda
Document Type:
Meeting Agenda
Organization:
3GPP
Author:
RAN3 Chair
Target Audience:
3GPP Meeting Delegates
Validity Period:
February 9-13, 2026
Approval Date:
Pending
Date of Last Changes:
N/A
Year:
2025
Location:
Goteborg, Sweden
Document Type:
Meeting contribution
Organization:
3GPP SA WG2
Author:
Source company
Agenda Item:
xx.xx.xx
Work Item / Release:
FS_6G_ARC/Rel-20
Abstract:
Proposal template for companies to submit Work Tasks (WTs) and Key Issues (KIs) for SA2 6G SID, including justification, scope, and potential structuring
Intended Audience:
SA2 participants and contributors
Date:
25–29 August 2025
Document Number:
S2-250xxxx
Year:
2025
Location:
Goteborg, SE
Topic:
Network Exposure Framework, 6G Architecture, Intent-based APIs
Document Type:
Technical Contribution / Meeting Report
Organization:
3GPP, InterDigital Inc., LG Electronics, vivo, Apple, CEWiT, IITB, Turkcell, Nokia, Ericsson, T-Mobile USA, CATT, Xiaomi, Huawei
Author:
Multiple Contributors from listed organizations
Target Audience:
3GPP Working Group 2, Network Architects, Researchers in 6G
Work Item / Release:
FS_6G_ARC/Rel-20
Agenda Item:
20.6.1.2
Date:
25–29 Aug 2025
Abstract:
Detailed analysis of network exposure framework and related study aspects for Work Task #1.2 including UE exposure, intent-based APIs, and AI integration in 6G networks
Related Standards:
TS 23.222, TS 29.522, TR 22.870
Technical Focus:
Exposure of network capabilities, UE-hosted Application Functions, AI-driven QoS prediction, intent-based API architecture
Year:
2025
Region / city:
Wuhan, China
Topic:
Inter-CU LTM in 5G networks
Document type:
Meeting agenda and summary
Organization / institution:
3GPP TSG RAN WG3
Author:
China Telecom
Target audience:
3GPP members, telecom companies
Effective period:
2025
Approval date:
7th April 2025
Modification date:
None specified
Year:
2023
Note:
Region / city
Topic:
Timing Advance management for LTM
Document type:
Meeting summary
Organization / institution:
3GPP
Author:
Moderator (CATT)
Target audience:
Technical stakeholders in the telecommunications industry
Year:
2023
Location:
Athens, Greece
Subject:
3GPP RAN2 LTM RRC configuration
Document type:
Technical progress report
Organization:
3GPP TSG-RAN WG2
Author:
Ericsson
Intended audience:
RAN2 members, telecom engineers
Meeting number:
121
Discussion topics:
Reference configuration, LTM candidate configuration, RRC procedures, UE actions, configuration application options
Year:
2025
Region / City:
Dallas, USA
Topic:
5G Network, Uplink DM-RS, RACH-less LTM
Document Type:
Change Request
Organization / Institution:
3GPP TSG-RAN WG1
Author:
Ofinno
Target Audience:
Technical experts, network engineers, RAN professionals
Period of validity:
November 17th – 21st, 2025
Approval Date:
2025-11-19
Modification Date:
N/A
Meeting:
3GPP TSG RAN WG2#125bis
Document number:
R2-240xx
Location:
Changsha, China
Date:
15th - 19th April 2024
Release:
Rel-19
Work Item:
NR_Mob_Ph4-Core
Source:
Apple
Target group:
SA WG3
Cc:
RAN WG3
Contact person:
Naveen Palle
Attachment:
None
Related specifications:
Rel-18 LTM, Rel-18 S-CPAC
Subject:
Security key handling options for inter-CU LTM without DC
Options discussed:
Option 1, Option 1A, Option 1B, Option 2, Option 3, Option 3A, Option 3B, Option 4, Option 5
Next meetings:
TSG RAN WG2 Meeting #126 (20 - 24 May 2024, Fukuoka, Japan); TSG RAN WG2 Meeting #127 (19 - 23 Aug 2024, Maastricht, Netherlands)