Content for TS 29.256 Word version: 18.4.0

3.1 Terms 3.2 Symbols 3.3 Abbreviations 4.1 Introduction
...

1 Scope p. 7

The present document specifies the stage 3 protocol and data model for the UAS-NF functionality of the Nnef Service Based Interface. It provides stage 3 protocol definitions and message flows, and specifies the API for each service offered by the NEF (UAS-NF).

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.

The Uncrewed Aerial System Network Function (UAS-NF) provides the UAS-specific NEF services to NF service consumers (e.g. AMF, SMF). The UAS-NF is functionality within the NEF.

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 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 23.256: "Support of Uncrewed Aerial Systems (UAS) connectivity, identification and tracking; Stage 2".

[7]

TR 21.900: "Technical Specification Group working methods".

[8]

RFC 9113: "HTTP/2".

[9]

OpenAPI Initiative, "OpenAPI 3.0.0 Specification", https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md.

[10]

RFC 8259: "The JavaScript Object Notation (JSON) Data Interchange Format".

[11]

RFC 9457: "Problem Details for HTTP APIs".

[12]

TS 33.501: "Security architecture and procedures for 5G system".

[13]

RFC 6749: "The OAuth 2.0 Authorization Framework".

[14]

TS 29.510: "Network Function Repository Services; Stage 3".

[15]

TS 29.571: "5G System; Common Data Types for Service Based Interfaces; Stage 3".

[16]

TS 24.501: "Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3".

3 Definitions of terms, symbols and abbreviations p. 8

3.1 Terms p. 8

For the purposes of the present document, the terms 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.

For the purposes of the present document, the terms and definitions given in TS 23.256 shall apply.

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.

Authorization/Authentication

BRID

Broadcast Remote Identification

BVLOS

Beyond Visual Line of Sight

Command and Control

NRID

Networked Remote Identification

PEI

Permanent Equipment Identifier

RID

Remote Identification

TPAE

Third Party Authorized Entity

UAS

Uncrewed Aerial System

UAV

Uncrewed Aerial Vehicle

USS

UAS Service Supplier

UTM

Uncrewed Aerial System Traffic Management

UUAA

USS UAV AA

UUID

Universal Unique Identifier

4 Overview p. 8

4.1 Introduction p. 8

Within the 5GC, the NEF (UAS-NF) offers services to the AMF, SMF, and PCF via the Nnef service based interface, and the NEF (UAS-NF) offers services to the SMF+PGW-C via the Nnef service based interface for UUAA-SM and C2 procedure supported in EPS (see TS 23.256).

Figure 4.1-1 provides the reference model (in service based interface representation and in reference point representation), with focus on the NEF (UAS-NF) and the scope of the present specification.

Copy of original 3GPP image for 3GPP TS 29.256, Fig. 4.1-1: Reference model - NEF (UAS-NF)

Figure 4.1-1: Reference model - NEF (UAS-NF)
(⇒ copy of original 3GPP image)

The functionalities supported by the NEF (UAS-NF) are listed in clause 4.3.2 of TS 23.256.