Content for TS 29.555 Word version: 18.5.0
1 Scope
2 References
3 Definitions, symbols and abbreviations
3.1 Definitions
3.2 Symbols
3.3 Abbreviations
4 Overview
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...
1 Scope p. 7
The present document specifies the stage 3 protocol and data model for the N5g-ddnmf Service Based Interface. It provides stage 3 protocol definitions and message flows, and specifies the API for each service offered by the 5G DDNMF as specified in TS 23.304.
The 5G System stage 2 architecture and procedures are specified in TS 23.501 and TS 23.502.
The Technical Realization of the Service Based Architecture and the Principles and Guidelines for Services Definition are specified in TS 29.500 and TS 29.501.
2 References p. 7
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 23.501: "System Architecture for the 5G System; Stage 2".
[3]
TS 23.502: "Procedures for the 5G System; Stage 2".
[4]
TS 23.304: "Proximity based Services (ProSe) in the 5G System (5GS)".
[5]
TS 29.500: "5G System; Technical Realization of Service Based Architecture; Stage 3".
[6]
TS 29.501: "5G System; Principles and Guidelines for Services Definition; Stage 3".
[7]
OpenAPI : "OpenAPI Specification Version 3.0.0", https://spec.openapis.org/oas/v3.0.0 .
[8]
RFC 9113: "HTTP/2".
[9]
RFC 8259: "The JavaScript Object Notation (JSON) Data Interchange Format".
[10]
RFC 9457: "Problem Details for HTTP APIs".
[11]
TS 33.501: "Security architecture and procedures for 5G system".
[12]
RFC 6749: "The OAuth 2.0 Authorization Framework".
[13]
TS 29.510: "Network Function Repository Services; Stage 3".
[14]
TR 21.900: "Technical Specification Group working methods".
[15]
RFC 7396: "JSON Merge Patch".
[16]
TS 29.571: "5G System; Common Data Types for Service Based Interfaces Stage 3".
[17]
TS 23.003: "Numbering, addressing and identification".
3 Definitions, symbols and abbreviations p. 8
3.1 Definitions p. 8
For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
5G DDNMF:
The 5G DDNMF is the logical function handling network related actions required for dynamic ProSe Direct Discovery. The 5G DDNMF in the HPLMN may interact with the 5G DDNMF in a VPLMN or Local PLMN in order to manage the ProSe Direct Discovery service.
ProSe Direct Discovery:
A procedure employed by a ProSe-enabled UE to discover other ProSe-enabled UEs in its vicinity based on direct radio transmissions between the two UEs with NR technology.
3.2 Symbols p. 8
For the purposes of the present document, the following symbols apply:
3.3 Abbreviations p. 8
For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
5G DDNMF
5G Direct Discovery Name Management Function
5G ProSe
5G Proximity-based Services
RPAUID
Restricted ProSe Application User ID
PDUID
ProSe Discovery UE ID
4 Overview p. 8
The 5G Direct Discovery Name Management Function (5G DDNMF) is the network entity in the 5G Core Network (5GC) supporting Direct Discovery Services. Within the 5GC, the 5G DDNMF in HPLMN invokes services provided by the 5G DDNMF in Local PLMN and/or in VPLMN via the N5g-ddnmf service based interface (see TS 23.304).
Figure 4-1 provides the reference model (in service based interface representation and in reference point representation), with focus on the 5G DDNMF:
The functionalities supported by the 5G DDNMF are listed in clause 4.3.2 of TS 23.304.
