TS 38.455 – NR Positioning Protocol A
3GPP TS 38.455 is the 3GPP Technical Specification for NR Positioning Protocol A. Its official 3GPP title is “NR Positioning Protocol A (NRPPa)”. It is published in 5 releases (Rel-15 to Rel-19); the latest version is 19.3.0 in Rel-19.
Defines NRPPa control-plane signaling between NG-RAN nodes and the LMF for positioning information, measurements, assistance, TRP and PRS management, and error handling.
Releases and versions of TS 38.455
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.3.0 | Read · Download (3GPP) |
| Rel-18 | 18.9.0 | Read · Download (3GPP) |
| Rel-17 | 17.11.0 | Read · Download (3GPP) |
| Rel-16 | 16.16.0 | Read · Download (3GPP) |
| Rel-15 | 15.4.0 | Read · Download (3GPP) |
Scope of TS 38.455
Category: Radio Access (Positioning Protocol). Technology generation: 5G. Network layer: RAN.
Who should read this specification?
- Network operators
- Device manufacturers
- Regulators and standards bodies
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: High.
Key technologies
Specifications referenced by TS 38.455
- TS 36.211 E-UTRA Physical Layer Specifications
- TS 36.455 LTE Positioning Protocol Annex (LPPa)
- TS 38.331 NR Radio Resource Control (RRC)
- TS 37.355 LTE Positioning Protocol (LPP)
- TS 38.321 NR MAC Protocol Specification
- TS 38.133 NR Radio Resource Management Requirements
- TS 36.214 E-UTRA Physical Layer Measurements
- TS 38.305 NG-RAN UE Positioning Stage 2
- TS 38.215 NR Physical Layer Measurements
- TR 21.905 3GPP Terminology and Definitions
- TS 23.273 5G Location Services Architecture Stage 2
- TS 29.571 5G Common Data Types
Specifications that reference TS 38.455
- TS 23.288 5G Network Data Analytics Architecture
- TS 38.413 NG Application Protocol (NGAP) Specification
- TS 28.541 5G Network Resource Model (NRM) Stage 2 and 3
- TS 23.273 5G Location Services Architecture Stage 2
- TS 29.518 AMF Service Based Interface
- TS 23.700 Study on SEAL Phase 4
- TS 38.215 NR Physical Layer Measurements
- TS 38.305 NG-RAN UE Positioning Stage 2
- TS 29.572 5G LMF Service-Based Interface
- TS 38.423 NG-RAN Xn Application Protocol
- TS 38.473 F1 Application Protocol (F1AP)
- TS 24.571 5G NAS Location Services (LCS)
Other specifications in the 38 series
- TS 38.422 Xn Signalling Transport Specification
- TS 38.423 NG-RAN Xn Application Protocol
- TS 38.424 Xn Interface User Plane Transport Protocol
- TS 38.425 NR User Plane Protocol Specification
- TS 38.460 E1 Interface General Aspects and Principles
- TS 38.461 E1 Interface Layer 1 Specification
- TS 38.462 E1 Signalling Transport Specification
- TS 38.463 E1 Application Protocol (E1AP)
Frequently asked questions
What is 3GPP TS 38.455?
3GPP TS 38.455 is the 3GPP Technical Specification for NR Positioning Protocol A. Defines NRPPa control-plane signaling between NG-RAN nodes and the LMF for positioning information, measurements, assistance, TRP and PRS management, and error handling.
Which 3GPP releases include TS 38.455?
TS 38.455 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 38.455 belong to?
TS 38.455 belongs to the Radio Access (Positioning Protocol) category of 3GPP specifications. It applies to 5G networks.
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