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Technical contribution within the 3GPP RAN3 standardization process outlining agreed concepts and candidate protocol stack options for the service-based interface between 6G RAN nodes and core network entities discussed during RAN3 Meeting #131.
Year:
2026
Meeting:
3GPP TSG-RAN3 Meeting #131
Agenda Item:
10.3.2.2
Location:
Gothenburg, Sweden
Dates:
9–13 February 2026
Title:
pCR to TR 38.760-3 on 6G RAN-CN SBI options
Organizations:
ZTE Corporation; CATT
Standardization Body:
3GPP
Working Group:
TSG-RAN3
Document Type:
Proposed Change Request (pCR)
Related Specification:
TR 38.760-3
Technical Domain:
6G Radio Access Network; Core Network Interfaces
Topic:
Service Based Interface (SBI) protocol options between 6G RAN node and CN entity
Purpose:
Discussions and Approval
Protocols Discussed:
TCP, HTTP/2, QUIC, HTTP/3
Interface Concept:
Direct and indirect communication via communication proxy and discovery function
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Year:
2025
Region / city:
Dallas, US
Topic:
6G RAN-CN interface options
Document type:
Technical Proposal
Organization / Institution:
ZTE Corporation
Target audience:
RAN3 participants, network engineers
Approval date:
TBD
Date of change:
17-21 November, 2025
Year:
2026
Region / City:
Goteborg, Sweden
Topic:
6G RAN-CN SBI options
Document Type:
Technical Proposal
Organization:
ZTE Corporation
Author:
ZTE Corporation
Target Audience:
RAN3 participants, 6G researchers, standardization bodies
Approval Date:
2026-02-09
Modification Date:
N/A
Year:
2026
Region / City:
Goteborg, Sweden
Topic:
6G RAN-CN SBI options
Document Type:
Meeting Document
Organization:
3GPP TSG-RAN3
Author:
ZTE Corporation
Target Audience:
Technical stakeholders in 6G RAN-CN development
Approval Date:
9th Feb 2026
Amendment Date:
Not specified
Period of Validity:
Not specified
Agenda Item:
10.3.2.2
Year:
2026
Location:
Göteborg, Sweden
Topic:
6G Data Collection
Document Type:
Meeting Document
Organization:
3GPP TSG-RAN WG3
Authors:
Ericsson, Jio Platforms
Agenda Item:
10.2
Purpose:
Agreement
Year:
2025
Region / City:
Dallas, US
Topic:
6G RAN-CN Interface Options
Document Type:
Technical Paper
Organization:
ZTE Corporation
Author:
ZTE Corporation
Target Audience:
3GPP TSG-RAN WG3 Members
Approval Date:
2025-11-17
Document Approval Status:
Approved
Year:
2026
Region / City:
Goteborg, Sweden
Topic:
6G RAN-CN SBI options
Document Type:
Meeting Agenda
Organization:
3GPP TSG-RAN3
Author:
ZTE Corporation
Target Audience:
RAN3 participants and decision-makers
Period of Effect:
9th Feb 2026 - 17th Feb 2026
Approval Date:
Pending
Modification Date:
Pending
Year:
2026
City:
Göteborg
Country:
Sweden
Dates:
9–13 February 2026
Topic:
NR to LTE mobility restriction in 5G and EPS networks
Document Type:
Liaison statement reply
Organization:
3GPP TSG-RAN WG3 (RAN3)
Source Group:
RAN3
Recipient Organizations:
SA2, CT4
Related References:
S2-2511202; R3-260015
Release:
Rel-20
Work Item:
TEI20_NRLTEREST
Contact Person:
Mio Nakamura
Contact Email:
[email protected]
Attachments:
R3-260643; R3-260644
Action Requested:
SA2 and CT4 to take the information into account
Subject Area:
NGAP and XnAP signaling support for NR 5GS to LTE EPS mobility restriction
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:
2021
Month:
August
Event:
3GPP TSG-RAN WG3 Meeting #113-e
Dates:
16–26 August 2021
Agenda Item:
19.2.1
Document ID:
R3-214309
Organization:
3GPP
Working Group:
TSG-RAN WG3
Source:
Ericsson (moderator)
Co-sources Mentioned:
Ericsson, Huawei, Nokia, Nokia Shanghai Bell, CATT, ZTE, Qualcomm
Topic:
5G NR positioning enhancements and uplink Angle of Arrival signalling
Technical Area:
NRPPa protocol and positioning measurements
Related Specification:
TS 38.455
Related Document:
R3-214297; R3-214287; R3-213851
Document Type:
Technical meeting contribution
Purpose:
Discussion
Technical Scope:
UL Angle of Arrival assistance information, expected azimuth and zenith AoA values, signalling in NRPPA measurement messages
Target Audience:
3GPP RAN3 delegates and technical contributors
Status:
Discussion input and chair’s notes proposals
Year:
2026
Event:
3GPP TSG-RAN WG3 #131
Location:
Goteborg, Sweden
Dates:
9–13 Feb 2026
Agenda Item:
10.4.1 Higher Layer Split (HLS)
Source:
NTT DOCOMO INC. (moderator)
Document Identifier:
R3-260662
Document Type:
Meeting contribution
Organization:
3GPP TSG RAN Working Group 3
Topic:
Higher Layer Split in 6G and disaggregated RAN architecture
Related Study Item:
Higher Layer Split (HLS)
Referenced Documents:
R3-260633; R3-260482
Key Technical Areas:
CU–DU split architecture; UE context handling; control plane signalling; F1-U interface aspects; CU–DU capability exchange and coordination
Technological Domain:
6G mobile network architecture
Approval Status:
Document for approval
Year:
2025
Region / city:
Dallas, US
Topic:
6G RAN-CN interface options
Document type:
Technical Proposal
Organization / Institution:
ZTE Corporation
Target audience:
RAN3 participants, network engineers
Approval date:
TBD
Date of change:
17-21 November, 2025
Year:
2026
Region / City:
Goteborg, Sweden
Topic:
6G RAN-CN SBI options
Document Type:
Technical Proposal
Organization:
ZTE Corporation
Author:
ZTE Corporation
Target Audience:
RAN3 participants, 6G researchers, standardization bodies
Approval Date:
2026-02-09
Modification Date:
N/A
Year:
2026
Region / City:
Gothenburg, Sweden
Topic:
6G RAN-CN Interface Principles and Functions
Document Type:
Technical Contribution
Organization / Institution:
Huawei
Author:
Huawei
Target Audience:
3GPP TSG-RAN WG3 Members
Effective Period:
2026
Approval Date:
2026
Modification Date:
Not specified
Agenda Item:
10.3.1
pCR Reference:
pCR1
Document for:
3GPP TSG-RAN WG3 Meeting #131
Date of Meeting:
09th ~ 13th Feb, 2026
Year:
2026
Region / City:
Gothenburg, Sweden
Topic:
6G RAN-CN interface evolution
Document Type:
pCR1
Organization:
FiberCop
Author:
xxx
Target Audience:
RAN3 members
Period of Validity:
N/A
Approval Date:
N/A
Modification Date:
N/A
Year:
2026
Region / City:
Goteborg, Sweden
Topic:
6G RAN-CN SBI options
Document Type:
Meeting Document
Organization:
3GPP TSG-RAN3
Author:
ZTE Corporation
Target Audience:
Technical stakeholders in 6G RAN-CN development
Approval Date:
9th Feb 2026
Amendment Date:
Not specified
Period of Validity:
Not specified
Agenda Item:
10.3.2.2
Year:
2026
Location:
Goteborg, Sweden
Event:
3GPP TSG-RAN WG3 Meeting #131
Agenda item:
13.3
Title of contribution:
(TP for pCR) RAN-CN procedures and signaling for ISAC
Organizations:
Ericsson; China Telecom; Huawei
Standardization body:
3GPP TSG-RAN WG3
Document type:
Technical contribution
Technical domain:
5G radio access network signaling and procedures
Topic:
RAN-CN procedures and signaling for Integrated Sensing and Communication (ISAC)
Related specification:
TR 38.765
Referenced documents:
TR 21.905; TR 23.700-14
Network element:
gNB
Functions described:
Sensing Initiation; Sensing Abort; Sensing Modification; Sensing Failure Indication; Sensing Information Transfer
Protocol:
Nx-AP
Key identifier:
Sensing Measurement ID
Procedure classes:
Class 1 procedure; Class 2 procedure
Status:
Technical proposal with editor’s notes and items for further study (FFS)
Year:
2026
Region / city:
Goteborg, Sweden
Topic:
Sensing procedures and signaling
Document type:
Technical paper
Author:
Ericsson, China Telecom, Huawei, LG Electronics, Xiaomi
Target audience:
Other
Period of validity:
2026-02-09 to 2026-02-13
Approval date:
N/A
Date of changes:
N/A
Year:
2026
Region / City:
Goteborg, Sweden
Theme:
Telecommunications
Document Type:
Technical Paper (TP)
Author:
Ericsson, China Telecom, Huawei, LG Electronics, Xiaomi, Nokia, NEC, OPPO, CATT, KPN
Target Audience:
Industry professionals in telecommunications
Approval Date:
2026-02-09
Modification Date:
2026-02-13
Period of Validity:
2026-02-09 to 2026-02-13
Note:
Contextual Description
Year:
2026
Meeting:
3GPP TSG-RAN WG3 Meeting #131
Location:
Goteborg, Sweden
Meeting Date:
9–13 February 2026
Agenda Item:
13.3
Title:
(TP for pCR) RAN-CN procedures and signaling for ISAC
Document Number:
R3-260732
Source:
Ericsson, China Telecom, Huawei, LG Electronics, Xiaomi, Nokia, NEC, OPPO, CATT, KPN
Organization:
3GPP TSG-RAN WG3
Technical Domain:
Integrated Sensing and Communication (ISAC) in 5G RAN
Document Type:
Technical Proposal (TP) for proposed Change Request to TR 38.765
Network Components:
RAN, CN, gNB, Sensing Function (SF), TRP
Protocol:
Nx-AP
Scope:
Procedures and signaling for sensing information transfer between RAN and CN
Defined Identifiers:
Sensing Measurement ID
Procedures Described:
Sensing Initiation, Sensing Abort, Sensing Modification, Sensing Failure Indication
Referenced Specifications:
TR 21.905, TR 23.700-14, TR 38.765
Year:
2026
Location:
Gothenburg, Sweden
Subject:
6G RAN-CN Point to Point Interface
Document Type:
Technical Discussion Paper
Organization:
3GPP TSG-RAN WG3
Author:
Lenovo
Audience:
3GPP working group members
Meeting Number:
131
Agenda Item:
10.3.2.1
References:
TR 38.760-3
Protocol Options:
SCTP, QUIC/UDP
Security Considerations:
TLS 1.3, DTLS, IPSec
Connection Mechanisms:
4-way handshake, 0-RTT/1-RTT handshake
Data Transmission Scope:
Control Plane and general data transmission