Content for TS 23.548 Word version: 19.0.0

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3.1 Terms 3.2 Abbreviations
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1 Scope p. 7

The present document defines the Stage 2 specifications for enhancements of 5G System to support Edge Computing.

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 (5GS); Stage 2".

[3]

TS 23.502: "Procedures for the 5G System; Stage 2".

[4]

TS 23.503: "Policy and Charging Control Framework for the 5G System; Stage 2".

[5]

TS 23.558: "Architecture for enabling Edge Applications (EA)".

[6]

RFC 7871: "Client Subnet in DNS Queries".

[7]

TS 24.301: "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3".

[8]

TS 24.526: "User Equipment (UE) policies for 5G System (5GS); Stage 3".

[9]

TS 29.500: "Technical Realization of Service Based Architecture; Stage 3".

[10]

TS 23.288: "Architecture enhancements for 5G System (5GS) to support network data analytics services".

[11]

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

[12]

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

3 Definitions of terms, symbols and abbreviations p. 7

3.1 Terms p. 7

For the purposes of the present document, the terms given in TR 21.905, TS 23.501 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 and TS 23.501.

Central DNS resolver/server:

A DNS resolver/server centrally deployed by the 5GC operator or 3rd party and is responsible for resolving the UE DNS Queries into suitable Edge Application Server (EAS) IP address(es).

Edge Application Server:

An Application Server resident in the Edge Hosting Environment.

Edge Hosting Environment:

An environment providing support required for Edge Application Server's execution.

Local part of DN:

The set of network entities of a DN that are deployed locally. The local access to the DN provides access to the local part of DN.

Local DNS resolver/server:

A DNS resolver/server that may be locally deployed by 5GC operator or 3rd parties within the Local DN, and is responsible for resolving UE DNS Queries into suitable EAS IP address(es) within the local DN. The L-DNS resolvers/servers may or may not have connectivity with C-DNS depending on the deployment.

3.2 Abbreviations p. 8

For the purposes of the present document, the abbreviations given in TR 21.905, TS 23.501 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 and TS 23.501.

C-DNS

Central DNS

C-NEF

Central NEF

C-PSA UPF

Central PSA UPF

EAS

Edge Application Server

EASDF

Edge Application Server Discovery Function

ECS

Edge Configuration Server

EDC

Edge DNS Client

EEC

Edge Enabler Client

EES

Edge Enabler Server

EHE

Edge Hosting Environment

L-DN

Local part of DN

L-DNS

Local DNS

L-NEF

Local NEF

L-PSA UPF

Local PSA UPF

HR-SBO

Home Routed Session BreakOut