TS 24.301 – EPS NAS Mobility and Session Management
3GPP TS 24.301 is the 3GPP Technical Specification for EPS NAS Mobility and Session Management. Its official 3GPP title is “Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS)”. It is published in 13 releases (Rel-8 to Rel-20); the latest version is 20.1.0 in Rel-20.
Defines EMM and ESM NAS procedures between UE and MME for LTE mobility, security, bearer control, interworking, and CIoT data transport.
Releases and versions of TS 24.301
| Release | Latest version | Links |
|---|---|---|
| Rel-20 | 20.1.0 | Read · Download (3GPP) |
| Rel-19 | 19.8.0 | Read · Download (3GPP) |
| Rel-18 | 18.9.0 | Read · Download (3GPP) |
| Rel-17 | 17.12.0 | Read · Download (3GPP) |
| Rel-16 | 16.9.0 | Read · Download (3GPP) |
| Rel-15 | 15.8.0 | Read · Download (3GPP) |
| Rel-14 | 14.10.0 | Read · Download (3GPP) |
| Rel-13 | 13.12.0 | Read · Download (3GPP) |
| Rel-12 | 12.13.0 | Read · Download (3GPP) |
| Rel-11 | 11.14.0 | Read · Download (3GPP) |
| Rel-10 | 10.15.0 | Read · Download (3GPP) |
| Rel-9 | 9.11.0 | Read · Download (3GPP) |
| Rel-8 | 8.10.0 | Read · Download (3GPP) |
Scope of TS 24.301
Category: Core Network (NAS). Technology generation: 4G. Network layer: CoreNetwork.
Who should read this specification?
- Network operators
- Device manufacturers
- Regulators and standards bodies
- Researchers and academics
Implementation notes
Complexity level: Expert. Implementation difficulty: High.
Key technologies
Specifications referenced by TS 24.301
- TS 23.401 Evolved Packet System Architecture
- TS 23.402 EPC for Non-3GPP Access (PMIP)
- TS 24.007 Layer 3 Architecture for GSM/UMTS/EPS/5GS
- TS 24.008 NAS Call, Mobility and Session Procedures
- TS 24.303 Dual-Stack MIPv6 Mobility Management
- TS 24.304 MIPv4 FA Mode Mobility Management in EPC
- TS 29.061 Packet Domain Interworking Requirements
- TS 31.102 USIM Application Specification
- TS 33.102 3G Security Architecture Specification
- TS 33.401 EPS Security Architecture
- TR 21.905 3GPP Terminology and Definitions
- TS 36.300 E-UTRAN Radio Interface Protocol Architecture
Specifications that reference TS 24.301
- TS 23.501 5G System Architecture
- TS 33.501 5G Security Architecture
- TS 24.008 NAS Call, Mobility and Session Procedures
- TS 23.401 Evolved Packet System Architecture
- TS 36.331 E-UTRA Radio Resource Control (RRC) Protocol
- TS 23.060 GPRS Stage 2 Service Description
- TS 36.300 E-UTRAN Radio Interface Protocol Architecture
- TS 25.331 RRC Protocol for UE-UTRAN Radio Interface
- TS 24.501 5GS NAS Protocol Specification
- TS 23.002 3GPP System Architecture Overview
- TS 32.422 Trace, MDT and UE Measurement Control
- TS 36.413 S1 Application Protocol (S1AP) for E-UTRAN
Other specifications in the 24 series
- TS 24.285 Allowed CSG List Management Object
- TS 24.286 IP Multimedia (IM) Core Network (CN) subsystem
- TS 24.292 IMS Centralized Services (ICS) Protocol
- TS 24.294 IMS Centralized Services (ICS) I1 Interface Protocol
- TS 24.302 Access to EPC via non-3GPP networks; Stage 3
- TS 24.303 Dual-Stack MIPv6 Mobility Management
- TS 24.304 MIPv4 FA Mode Mobility Management in EPC
- TS 24.305 Selective Disabling of 3GPP UE Capabilities
Frequently asked questions
What is 3GPP TS 24.301?
3GPP TS 24.301 is the 3GPP Technical Specification for EPS NAS Mobility and Session Management. Defines EMM and ESM NAS procedures between UE and MME for LTE mobility, security, bearer control, interworking, and CIoT data transport.
Which 3GPP releases include TS 24.301?
TS 24.301 is published in 13 releases, from Rel-8 to Rel-20. The latest version on 3GPP Explorer is 20.1.0 (Rel-20).
What category does TS 24.301 belong to?
TS 24.301 belongs to the Core Network (NAS) category of 3GPP specifications. It applies to 4G networks.
View the full specification with interactive table of contents, version history, and AI analysis.
Read Full Specification →