TS 38.304 – NR UE Idle and Inactive State Procedures
3GPP TS 38.304 is the 3GPP Technical Specification for NR UE Idle and Inactive State Procedures. Its official 3GPP title is “User Equipment (UE) procedures in Idle mode and RRC Inactive state”. It is published in 5 releases (Rel-15 to Rel-19); the latest version is 19.3.0 in Rel-19.
Specifies AS procedures for UE in RRC_IDLE and RRC_INACTIVE states, including cell selection, reselection, and paging.
Releases and versions of TS 38.304
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.3.0 | Read · Download (3GPP) |
| Rel-18 | 18.6.0 | Read · Download (3GPP) |
| Rel-17 | 17.11.0 | Read · Download (3GPP) |
| Rel-16 | 16.11.0 | Read · Download (3GPP) |
| Rel-15 | 15.8.0 | Read · Download (3GPP) |
Scope of TS 38.304
Category: Radio Access (RRC Procedures). Technology generation: 5G. Network layer: UE.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Intermediate. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TS 38.304
- TS 23.501 5G System Architecture
- TS 38.215 NR Physical Layer Measurements
- TS 22.261 5G System Service Requirements
- TR 24.890 5G NAS Protocol for 5GS Stage 3
- TS 24.501 5GS NAS Protocol Specification
- TS 38.101 UE Radio Transmission and Reception
- TS 23.287 5G V2X Architecture Enhancements
- TS 23.285 V2X Architecture Enhancements for LTE
- TS 22.011 Service accessibility
- TS 38.321 NR MAC Protocol Specification
- TR 21.905 3GPP Terminology and Definitions
- TS 26.517 5G Multicast-Broadcast User Services Protocols
Specifications that reference TS 38.304
- TS 23.501 5G System Architecture
- TS 23.502 5G System Procedures
- TS 24.008 NAS Call, Mobility and Session Procedures
- TS 24.229 IMS SIP/SDP Call Control Protocol
- TS 36.331 E-UTRA Radio Resource Control (RRC) Protocol
- TS 38.300 NR and NG-RAN Overall Description
- TS 38.331 NR Radio Resource Control (RRC)
- TS 24.501 5GS NAS Protocol Specification
- TS 28.622 Generic Network Resource Information Service
- TS 38.413 NG Application Protocol (NGAP) Specification
- TS 28.541 5G Network Resource Model (NRM) Stage 2 and 3
- TS 28.552 5G Network Performance Measurements
Other specifications in the 38 series
- TS 38.214 NR Physical Layer Data Channel Procedures
- TS 38.215 NR Physical Layer Measurements
- TS 38.291 Ambient IoT Physical Layer
- TS 38.300 NR and NG-RAN Overall Description
- TS 38.305 NG-RAN UE Positioning Stage 2
- TS 38.306 NR UE Radio Access Capability Parameters
- TS 38.307 Release-Independent NR UE Requirements
- TS 38.314 NR Performance Measurements Specification
Frequently asked questions
What is 3GPP TS 38.304?
3GPP TS 38.304 is the 3GPP Technical Specification for NR UE Idle and Inactive State Procedures. Specifies AS procedures for UE in RRC_IDLE and RRC_INACTIVE states, including cell selection, reselection, and paging.
Which 3GPP releases include TS 38.304?
TS 38.304 is published in 5 releases, from Rel-15 to Rel-19. The latest version on 3GPP Explorer is 19.3.0 (Rel-19).
What category does TS 38.304 belong to?
TS 38.304 belongs to the Radio Access (RRC Procedures) category of 3GPP specifications. It applies to 5G networks.
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