TS 36.423 – X2 Application Protocol (X2AP) Specification
3GPP TS 36.423 is the 3GPP Technical Specification for X2 Application Protocol (X2AP) Specification. It is published in 12 releases (Rel-8 to Rel-19); the latest version is 19.1.0 in Rel-19.
Specifies radio network layer signaling procedures between eNBs in E-UTRAN for X2 interface functions including handover, load management, and inter-cell coordination.
Releases and versions of TS 36.423
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.1.0 | Read · Download (3GPP) |
| Rel-18 | 18.4.0 | Read · Download (3GPP) |
| Rel-17 | 17.7.0 | Read · Download (3GPP) |
| Rel-16 | 16.13.0 | Read · Download (3GPP) |
| Rel-15 | 15.14.0 | Read · Download (3GPP) |
| Rel-14 | 14.8.0 | Read · Download (3GPP) |
| Rel-13 | 13.8.0 | Read · Download (3GPP) |
| Rel-12 | 12.9.0 | Read · Download (3GPP) |
| Rel-11 | 11.9.0 | Read · Download (3GPP) |
| Rel-10 | 10.7.0 | Read · Download (3GPP) |
| Rel-9 | 9.6.0 | Read · Download (3GPP) |
| Rel-8 | 8.9.0 | Read · Download (3GPP) |
Scope of TS 36.423
Category: Radio Access (RAN Protocols). Technology generation: 4G. Network layer: RAN.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TS 36.423
- TS 36.211 E-UTRA Physical Layer Specifications
- TS 36.213 LTE Physical Layer Procedures
- TS 23.401 Evolved Packet System Architecture
- TS 23.203 Policy and Charging Control Architecture
- TS 24.301 EPS NAS Mobility and Session Management
- TS 36.300 E-UTRAN Radio Interface Protocol Architecture
- TS 36.104 E-UTRA/NB-IoT Base Station RF Requirements
- TS 33.401 EPS Security Architecture
- TS 36.414 S1 Interface User Plane Transport
- TR 21.905 3GPP Terminology and Definitions
- TS 23.216 SRVCC Architecture Enhancements
- TS 36.422 X2 Signalling Transport Specification
Specifications that reference TS 36.423
- TS 23.401 Evolved Packet System Architecture
- TS 36.331 E-UTRA Radio Resource Control (RRC) Protocol
- TS 36.300 E-UTRAN Radio Interface Protocol Architecture
- TS 38.331 NR Radio Resource Control (RRC)
- TS 38.413 NG Application Protocol (NGAP) Specification
- TS 28.541 5G Network Resource Model (NRM) Stage 2 and 3
- TS 36.413 S1 Application Protocol (S1AP) for E-UTRAN
- TS 33.401 EPS Security Architecture
- TS 23.216 SRVCC Architecture Enhancements
- TS 37.340 Overview of Multi-Connectivity Operation using E-UTRA and NR
- TS 29.272 MME and SGSN Diameter interfaces to HSS/CSS/EIR
- TS 38.423 NG-RAN Xn Application Protocol
Other specifications in the 36 series
- TS 36.414 S1 Interface User Plane Transport
- TS 36.420 X2 Interface Introduction for E-UTRAN
- TS 36.421 X2 Interface Layer 1 Specification
- TS 36.422 X2 Signalling Transport Specification
- TS 36.424 X2 Interface User Plane Transport Protocols
- TS 36.425 X2 User Plane Protocol for Dual Connectivity
- TS 36.440 E-UTRAN MBMS Architecture Description
- TS 36.441 MBMS Layer 1 Specifications for E-UTRAN
Related glossary terms
Related topics
Related technologies
Frequently asked questions
What is 3GPP TS 36.423?
3GPP TS 36.423 is the 3GPP Technical Specification for X2 Application Protocol (X2AP) Specification. Specifies radio network layer signaling procedures between eNBs in E-UTRAN for X2 interface functions including handover, load management, and inter-cell coordination.
Which 3GPP releases include TS 36.423?
TS 36.423 is published in 12 releases, from Rel-8 to Rel-19. The latest version on 3GPP Explorer is 19.1.0 (Rel-19).
What category does TS 36.423 belong to?
TS 36.423 belongs to the Radio Access (RAN Protocols) category of 3GPP specifications. It applies to 4G networks.
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