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Content for  TS 29.563  Word version:  18.4.0

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1  Scopep. 9

The present document specifies the stage 3 protocol, including message flows and API specification details, for the Nhss services, as part of the 5G Service-Based Architecture, offered by the HSS for interworking with the 5G UDM Network Function.
The 5G System stage 2 architecture and procedures are specified in TS 23.501 and TS 23.502.
The User Data Interworking, Coexistence and Migration stage 2 architecture and procedures are specified in TS 23.632.
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.
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2  Referencesp. 9

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 29.500: "5G System; Technical Realization of Service Based Architecture; Stage 3".
[5]
TS 29.501: "5G System; Principles and Guidelines for Services Definition; Stage 3".
[6]
TS 23.335: "User Data Convergence (UDC); Technical realization and information flows".
[7]
TS 29.571: "5G System; Common Data Types for Service Based Interfaces; Stage 3".
[8]
TS 23.632: "User Data Interworking, Coexistence and Migration".
[9]
RFC 9113:  "HTTP/2".
[10]
OpenAPI Initiative, "OpenAPI Specification Version 3.0.0", https://spec.openapis.org/oas/v3.0.0.
[11]
RFC 8259:  "The JavaScript Object Notation (JSON) Data Interchange Format".
[12]
RFC 9457:  "Problem Details for HTTP APIs".
[13]
TS 29.503: "5G System; Unified Data Management Services; Stage 3".
[14]
TR 21.900: "Technical Specification Group working methods".
[15]
TS 23.003: "Numbering, addressing and identification".
[16]
TS 29.303: "Domain Name System Procedures; Stage 3".
[17]
TS 29.272: "Evolved Packet System; MME and SGSN Related Interfaces Based on Diameter Protocol".
[18]
TS 23.682: "Architecture enhancements to facilitate communications with packet data networks and applications".
[19]
TS 29.335: "User Data Convergence (UDC); User Data Repository Access Protocol over the Ud interface".
[20]
TS 29.002: "Mobile Application Part (MAP) specification".
[21]
TS 29.336: "Home Subscriber Server (HSS) diameter interfaces for interworking with packet data networks and applications".
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3  Definitions of terms, symbols and abbreviationsp. 10

3.1  Termsp. 10

Void.

3.2  Symbolsp. 10

Void.

3.3  Abbreviationsp. 10

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.
5GC
5G Core Network
HSS
Home Subscriber Server
JSON
Javascript Object Notation
SBI
Service Based Interface
UDM
Unified Data Management
UDR
Unified Data Repository

4  Overviewp. 10

4.1  Introductionp. 10

Within the 5GC, the HSS offers services to the UDM via the Nhss service-based interface (see TS 23.501, TS 23.502 and TS 23.632).
Figure 4.1-1 provides the reference model in service-based interface representation with focus on the HSS.
Reproduction of 3GPP TS 29.563, Fig. 4.1-1: Reference model - HSS
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