№ files_lp_4_process_3_094318
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Technical standards meeting contribution documenting agreed updates to TR 38.745 regarding input, output, and feedback data definitions for AI/ML-assisted intra-CU LTM in 5G network mobility procedures.
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
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TP for TR 38.745 Conclusion on Study on AI/ML for NG-RAN Phase 3
Year: 2026
Region / City: Goteborg, Sweden
Topic: AI/ML for NG-RAN Phase 3
Document Type: Meeting Document
Organization: 3GPP TSG-RAN WG3
Author: ZTE Corporation (Rapporteur), NEC, Nokia, Ofinno, Qualcomm, Lenovo, Samsung, Ericsson, CATT, China Telecom, Huawei, LG Electronics, CMCC, China Unicom, FiberCop
Target Audience: 3GPP members, RAN3 participants, telecommunication engineers
Period of Action: Rel-20 normative phase
Approval Date: 13 February 2026
Date of Changes: 13 February 2026
(pCR to TR 38.745) AIML based mobility – Multi-hop UE Trajectory
Year: 2026
Region / City: Gothenburg, Sweden
Topic: AI/ML-based Mobility, Multi-hop UE Trajectory
Document Type: pCR
Organization: 3GPP TSG-RAN WG3
Author: Ericsson, Jio Platform, ZTE, Huawei, NEC, Qualcomm, Samsung, China Telecom, CATT, FiberCop, Nokia, LG Electronics
Target Audience: Telecommunications professionals, network engineers, AI/ML researchers
Period of validity: February 2026
Approval Date: February 2026
Date of Changes: February 2026
Contextual Description: A technical document that outlines the multi-hop UE trajectory prediction solutions using AI/ML models for mobile network optimization.
TP to 38.423 BL CR: UE Reader Authorization Related Updates, RAN3#131 Meeting, February 9–13, 2026
Year: 2026
Location: Gothenburg, Sweden
Meeting: 3GPP TSG-RAN WG3 Meeting #131
Agenda Item: 14.2
Document ID: R3-260731
Topic: UE Reader authorization in NG-RAN signalling procedures
Document Type: Technical contribution / change proposal
Organizations: China Mobile Communications Corporation (CMCC), LG Electronics, Nokia
Standard Reference: 3GPP TS 38.423
Network Domain: 5G NG-RAN
Procedures Referenced: Handover Preparation; Retrieve UE Context
Technical Element: A-IoT UE Reader Authorized Information Element
Purpose: Proposed updates to XnAP procedures and messages to include authorization status for UE acting as an A-IoT UE Reader
Approval Status: Document for agreement
Meeting Dates: February 9–13, 2026
RAN-CN interface evolution towards Service Based Interface (SBI) at RAN3#131, Gothenburg, February 2026
Year: 2026
Location: Gothenburg, Sweden
Subject: 6G RAN-CN interface and Service Based Interface (SBI)
Document Type: pCR1
Organization: 3GPP TSG-RAN WG3
Author: FiberCop
Agenda Item: 10.3.2.2
Meeting: #131
Period: 9–13 February 2026
Technical Focus: Service identification, exposure, discovery, and protocol options for 6G SBI
Summary: Technical report capturing discussions and proposals on the evolution of the RAN-CN interface towards a service-based interface (SBI) for 6G, including service mechanisms and potential protocol stacks.
Clean-up for Intra-CU topology adaption procedure
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
[draft] LS on MRO for intra-CU CLTM
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
3GPP TSG-RAN WG3 #131 UE Context Modification Procedure for Conditional Intra-CU LTM, Goteborg, Sweden, 9–13 February 2026
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
[draft] LS on MRO for intra-CU CLTM
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.
Topics: 38745 RAN3131 Intra-CU