Content for TS 29.558 Word version: 18.6.0

3.1 Terms 3.2 Symbols 3.3 Abbreviations
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1 Scope p. 22

The present document specifies the APIs for enabling the edge applications over 3GPP networks. The application layer architecture, functional requirements, procedures and information flows necessary for enabling edge applications over 3GPP networks are specified in TS 23.558. The APIs are specified as RESTful APIs except for custom operations wherever required.

2 References p. 22

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 23.558: "Architecture for enabling Edge Applications".

[3]

Open API: "OpenAPI Specification Version 3.0.0.", https://spec.openapis.org/oas/v3.0.0.

[4]

TR 21.900: "Technical Specification Group working methods".

[5]

TS 29.501: "5G System; Principles and Guidelines for Services Definition; Stage 3".

[6]

TS 29.122: "T8 reference point for Northbound Application Programming Interfaces (APIs)".

[7]

RFC 6455: "The Websocket Protocol".

[8]

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

[9]

TS 29.510: "5G System; Network Function Repository Services; Stage 3".

[10]

TS 29.522: "5G System; Network Exposure Function Northbound APIs; Stage 3".

[11]

TS 29.572: "5G System; Location Management Services; Stage 3".

[12]

TS 29.520: "5G System; Network Data Analytics Services; Stage 3".

[13]

TS 29.523: "5G System; Policy Control Event Exposure Service; Stage 3".

[14]

TS 24.558: "Enabling Edge Applications; Protocol specification".

[15]

TS 29.214: "Policy and charging control over Rx reference point".

[16]

TS 29.514: "5G System; Policy Authorization Service; Stage 3".

[17]

TS 29.222: "Common API Framework for 3GPP Northbound APIs".

[18]

TS 33.122: "Security Aspects of Common API Framework for 3GPP Northbound APIs".

[19]

RFC 6749: "The OAuth 2.0 Authorization Framework".

[20]

TS 33.558: "Security aspects of enhancement of support for enabling edge applications; Stage 2".

[21] Void.

[22]

TS 29.503: "5G System; Unified Data Management Services; Stage 3".

[23]

TS 23.271: "Functional stage 2 description of Location Services (LCS)".

[24]

TS 23.273: "5G System (5GS) Location Services (LCS); Stage 2".

[25]

RFC 6733: "Diameter Base Protocol".

3 Definitions of terms, symbols and abbreviations p. 23

3.1 Terms p. 23

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 following terms and its definitions given in TS 23.558 shall apply:

Application Context

Application Context Relocation

Application Context Transfer

Application Server

Edge Computing Service Provider

Edge Data Network

EEC Context

Edge Hosting Environment

Instantiable EAS

Partner ECS

Partner ECSP

3.2 Symbols p. 23

Void

3.3 Abbreviations p. 23

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.

Application Client

ACID

Application Client Identification

ACR

Application Context Relocation

AEF

API Exposing Function

Application Function

ASP

Application Service Provider

CAPIF

Common API Framework

CAS

Cloud Application Server

CES

Cloud Enabler Server

Data Network

DNAI

Data Network Access Identifier

DNN

Data Network Name

EAS

Edge Application Server

EASID

Edge Application Server Identification

ECI

Edge and Cloud Interworking

ECS

Edge Configuration Server

ECSP

Edge Computing Service Provider

EDN

Edge Data Network

EEC

Edge Enabler Client

EECID

Edge Enabler Client Identification

EEL

Edge Enabler Layer

EES

Edge Enabler Server

EESID

Edge Enabler Server Identification

EHE

Edge Hosting Environment

FQDN

Fully Qualified Domain Name

GPSI

Generic Public Subscription Identifier

LADN

Local Area Data Network

NEF

Network Exposure Function

NID

Network Identifier

PCF

Policy Control Function

S-EAS

Source Edge Application Server

S-EES

Source Edge Enabler Server

SCEF

Service Capability Exposure Function

SEAL

Service Enabler Architecture Layer for Verticals

SEALDD

SEAL Data Delivery

SMF

Session Management Function

SNPN

Stand-alone Non-Public Network

SSID

Service Set Identifier

T-EAS

Target Edge Application Server

T-EES

Target Edge Enabler Server

TAI

Tracking Area Identity

UAS

Uncrewed Aerial System

4 Overview p. 24

3GPP TS 23.558 has specified the application layer architecture, requirements, procedures, information flows and the APIs, in order to support the edge applications over the 3GPP systems. Various features are defined to ensure the efficient use and deployment of edge applications, some of which include, registration, discovery, service provisioning, capability exposure, support for service continuity and support for roaming and federation.

The present document specifies the north-bound APIs in detail, needed to support the services offered by EES and ECS over EDGE-3/6/9/10 interfaces and by CES and CAS over ECI-1/2/3/4 interfaces for enabling the edge applications over 3GPP network.