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Content for  TS 29.542  Word version:  17.4.0

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1  Scopep. 6

The present document specifies the stage 3 protocol and data model for the Nsmf Service Based Interfaces for Non-IP Data Delivery (NIDD). It provides stage 3 protocol definitions and message flows, and specifies the API for the service offered by the SMF.
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.
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2  Referencesp. 6

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]
OpenAPI: "OpenAPI Specification Version 3.0.0", https://spec.openapis.org/oas/v3.0.0.
[7]
TR 21.900: "Technical Specification Group working methods".
[8]
TS 33.501: "Security architecture and procedures for 5G system".
[9]
RFC 6749:  "The OAuth 2.0 Authorization Framework".
[10]
TS 29.510: "5G System; Network Function Repository Services; Stage 3".
[11]
RFC 7540:  "Hypertext Transfer Protocol Version 2 (HTTP/2)".
[12]
RFC 8259:  "The JavaScript Object Notation (JSON) Data Interchange Format".
[13]
RFC 7807:  "Problem Details for HTTP APIs".
[14]
TS 29.541: "5G System (5GS); Network Exposure (NE) function services for Non-IP Data Delivery (NIDD); Stage 3".
[15]
TS 29.571: "5G System; Common Data Types for Service Based Interfaces; Stage 3".
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3  Definitions, symbols and abbreviationsp. 7

3.1  Termsp. 7

Void.

3.2  Symbolsp. 7

Void.

3.3  Abbreviationsp. 7

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
AMF
Access and Mobility Management Function
H-SMF
Home SMF
I-SMF
Intermediate SMF
NEF
Network Exposure Function
NIDD
Non-IP Data Delivery
MT
Mobile Terminated
SMF
Session Management Function
V-SMF
Visited SMF
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4  Overviewp. 7

4.1  Introductionp. 7

Within the 5GC, the SMF offers services to the NF service consumers via the Nsmf service based interface (see TS 23.501 and TS 23.502).
Figure 4.1-1 provides the reference model (in service based interface representation and in reference point representation), with focus on the services specified within the present specification.
Copy of original 3GPP image for 3GPP TS 29.542, Fig. 4.1-1: Reference model - SMF
Figure 4.1-1: Reference model - SMF
(⇒ copy of original 3GPP image)
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N29 is the reference point between the (H-)SMF and the NEF.
The functionalities supported by the SMF are listed in clause 6.2.2 of TS 23.501.

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