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The document specifies the Radio Resource Control (RRC) protocol for NR (New Radio) within 3GPP, aimed at defining communication procedures for radio access in 5G networks.
Year:
2025
Region / City:
Sophia Antipolis, France
Topic:
Radio Resource Control (RRC) Protocol
Document Type:
Technical Specification
Organization / Institution:
3GPP
Author:
3GPP Organizational Partners
Target Audience:
Telecommunication engineers, Network operators, RRC protocol developers
Effective Period:
Release 18
Approval Date:
Not applicable
Modification Date:
Not applicable
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Year:
2025
Region / City:
Sophia Antipolis, France
Subject:
NR Medium Access Control (MAC) protocol specification
Document Type:
Technical Specification
Organization / Institution:
3GPP
Author:
3GPP
Target Audience:
3GPP Organizational Partners and future development work participants
Validity Period:
Ongoing development
Approval Date:
Not yet approved
Date of Changes:
2025
Context:
Technical specification for the MAC protocol in NR systems as defined by 3GPP, detailing procedures for data transfer, random access, and resource management.
Year:
2025
Region / city:
Sophia Antipolis, France
Topic:
Radio Resource Control Protocol, NR
Document type:
Technical Specification
Organization:
3GPP Organizational Partners
Author:
3GPP Technical Specification Group
Target audience:
Technical professionals in telecommunications
Validity period:
Ongoing development
Approval date:
N/A
Amendment date:
N/A
Year:
2025
Region / City:
Global
Topic:
Radio Access Network, User Equipment
Document Type:
Technical Specification
Organization / Institution:
3rd Generation Partnership Project (3GPP)
Author:
3GPP
Target Audience:
Engineers, Researchers, Telecom Professionals
Validity Period:
Ongoing
Approval Date:
2025
Amendment Date:
N/A
Description:
A technical specification detailing the radio access capability parameters for User Equipment (UE) in NR (New Radio) for Release 17.
Year:
2022
Region / city:
Global
Topic:
Positioning Configuration
Document Type:
Discussion
Organization / Institution:
Ericsson
Author:
Ericsson
Target Audience:
3GPP members
Period of validity:
Not specified
Approval Date:
2022-05-09
Modification Date:
2022-05-17
Specification:
3GPP TS 38.331
Working Group:
3GPP TSG-RAN WG2
Meeting:
#132
Location:
Dallas, USA
Meeting dates:
17th – 21st November 2025
Document number:
R2-250xxxx
Revision:
1
Current version:
19.0.0
CR number:
5604
CR category:
B (addition of feature)
Release:
Rel-19
Work item code:
TEI19
Date:
2025-11-20
Title:
NR-NTN to NB-IoT NTN Cell Selection [IoT_NR_NTN_CellSelect]
Source to WG:
EchoStar, Boost Mobile Network, Qualcomm, Aalyria, Terrestar, Skylo, Sateliot, Samsung
Source to TSG:
R2
Clauses affected:
2, 5.2.2.4, 6.2.2, 6.3.1, 6.3.2
Other specifications affected:
TS 38.306 CR 1389; TS 38.300 CR 1059
Reason for change:
Enhanced inter-RAT cell selection mechanism between NR-NTN and IoT NTN
Summary of change:
Introduction of IoT NTN neighbour cell information in new SIBxy including IoT NTN carrier frequency and satellite information
Consequences if not approved:
Reduced efficiency of inter-RAT cell selection and potential service interruption or degraded performance for UEs with dual NTN RAT capabilities
Revision history:
r0 initial version; rev1 introduction of new SIBxy and revision of field description parameters
Form version:
CR-Form-v12.3
Year:
2022
Version:
V16.8.0
Date of publication:
2022-03
Organization:
3rd Generation Partnership Project (3GPP)
Technical Specification Group:
Radio Access Network
Specification number:
TS 38.331
Release:
Release 16
Subject:
NR Radio Resource Control (RRC) protocol
Document type:
Technical Specification
Scope:
5G NR radio interface control procedures and signalling
Intellectual property notice:
© 2022 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC)
Status:
Provided for future development work within 3GPP; not subject to approval by the Organizational Partners
Place of publication:
Valbonne, France
Year:
2019
Region / City:
Sophia Antipolis, France
Topic:
Radio Resource Control (RRC) protocol specification
Document Type:
Technical Specification
Organization / Institution:
3rd Generation Partnership Project (3GPP)
Author:
3GPP
Target Audience:
Technical professionals and organizations involved in telecommunications
Period of Validity:
N/A
Approval Date:
N/A
Amendment Date:
N/A
Year:
2025
Region / City:
Bengaluru, India
Topic:
Network Energy Saving
Document Type:
Change Request
Organization / Institution:
3GPP
Author:
ZTE Corporation, Sanechips
Target Audience:
3GPP Technical Specification Group, Work Groups, Industry Professionals
Effective Period:
2025-09-02 onwards
Approval Date:
2025-09-02
Revision History:
Current version: 18.6.0
Release:
Rel-19
Category:
B (addition of feature)
Work Item Code:
Netw_Energy_NR_enh-Core
Changes:
Addition of UE capability for network energy saving enhancement
Clauses Affected:
6.3.3, 11.2.2
Related Specifications:
TS 38.306
Test Specifications:
No specific tests referenced
O&M Specifications:
No specific operations & maintenance specifications referenced
Year:
2025
Location:
Bangalore, India
Topic:
TS 38.331 Change Requests and RRC Issues
Document Type:
Meeting Report
Organization:
3GPP TSG RAN WG2
Author:
Ericsson
Intended Audience:
WG2 Members, 3GPP Participants
Period Covered:
August 25–29, 2025
Agenda Item:
8.5.1
Deadline for Comments:
August 8, 2025
Source Companies:
OPPO, Samsung, vivo, LGE, CATT, Fujitsu, Sharp, Xiaomi, Google, Huawei
Key Issues Discussed:
OD-SIB1, Paging Adaptation, SUL, RRC Configuration
Year:
2025
Region / city:
Sophia Antipolis, France
Topic:
Radio Resource Control Protocol, NR
Document type:
Technical Specification
Organization:
3GPP Organizational Partners
Author:
3GPP Technical Specification Group
Target audience:
Technical professionals in telecommunications
Validity period:
Ongoing development
Approval date:
N/A
Amendment date:
N/A
Clarification for KPAS and EU-Alert in 3GPP TS 38.331 (Change Request 1629, Release 16, 9 June 2020)
Year:
2020
Date:
2020-06-09
Organization:
3GPP TSG RAN2
Source:
Ericsson
Document type:
Change Request
Specification:
3GPP TS 38.331
Release:
Release 16
Category:
A (mirror corresponding to a change in an earlier release)
Work item code:
NR_newRAT-Core
Affected clauses:
3.1; 5.2.2.4.9; 6.5
Related specifications:
TS 38.300; TS 38.304
Subject:
Public Warning System procedures in NR
Systems referenced:
KPAS; EU-Alert; CMAS; ETWS
Technical scope:
5G NR radio resource control procedures and warning message handling in UE
Impacted functionality:
Public Warning System (PWS)
Impacted architecture options:
Standalone; NR-DC; NE-DC
Year:
2020
Region / city:
Global
Subject:
Telecommunications, 5G NR, Radio Access Network
Document type:
Change Request (CR)
Organization / body:
3GPP RAN WG2
Author:
3GPP RAN WG2
Work item code:
NR_RF_FR2_req_enh
Release:
Rel-16
Category:
B (addition of feature)
Date:
2020-05-21
Clauses affected:
5.X, 6.1.36.3.2, 6.3.3
Related specifications:
TS/TR 38.321, O&M specifications
Purpose:
Introduce MAC-CE signaling for measured P-MPR MPE estimate in FR2
Year:
2020
Region / city:
Elbonia (online)
Meeting:
3GPP TSG-RAN WG2 Meeting #109e
Document type:
Technical discussion paper
Source:
CATT (offline rapporteur)
Agenda item:
6.9.4.2
Title:
NR_Mob_enh-Core - Release 16
Purpose:
Discussion and Decision
Topics:
Conditional PSCell Change, CPC terminology, stage 3 issues
Companies involved:
Samsung, Ericsson
References:
R2-2001163
Date of meeting:
24 February – 6 March 2020
Year:
2023
Region / City:
Chicago, USA
Topic:
Advanced receiver signaling for MU-MIMO
Document Type:
Report
Organization:
CATT
Author:
RAN2, RAN4
Target Audience:
Technical teams in RAN and UE development
Period of validity:
Release 18 work item
Approval Date:
Not specified
Date of Changes:
Not specified
Context:
This report discusses the required RRC signaling for advanced MU-MIMO receivers within the NR demodulation performance evolution for Release 18, focusing on the network assistance signaling for advanced receivers.
Year:
2025
Region / City:
Gothenburg, Sweden
Theme:
Telecommunications
Document Type:
Change Request
Organization / Institution:
3GPP
Author:
OPPO, CATT, ZTE Corporation, Sanechips
Target Audience:
Telecommunications professionals
Period of validity:
Not specified
Approval Date:
2025-1-25
Change Date:
Not specified
Release:
Rel-19
Category:
F (correction)
Work item code:
NR_LBCA_Sw-Core
Summary of change:
Change the IE name for low band carrier aggregation via switching to align with TS 38.306 and TS 38.331
Clauses affected:
5.2, 5.4, 5.5, 5.6, 5.7, 6.3.3
Related Specifications:
TS 38.521-1
Other specifications affected:
None specified
Test Specifications:
TS 38.521-1
Other comments:
None