Content for TS 29.305 Word version: 17.0.0

3.1 Definitions 3.2 Symbols 3.3 Abbreviations
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0 Introduction p. 7

The content of this specification is a part of overall solution to meet the requirement of the interworking between EPS and the legacy system, mainly for the interfaces between S4-SGSN/MME and HSS/HLR/EIR.

1 Scope p. 8

The present document is to specify the InterWorking Functions (IWF)

between MAP-based Gr, Gf interfaces and Diameter-based S6a, S6d, S13, S13a interfaces;
between the S6a interface with SMS subscription data on the MME side and the S6a interface without SMS subscription data plus the MAP-based D interface for SMS subscription on the HSS side;
between MAP-based C for SMS interface and Diameter-based S6c interface;
between MAP-based E for SMS interface and Diameter-based SGd interface.

The InterWorking Function between the S6a interface with SMS subscription data and the S6a interface without SMS subscription data plus the MAP-based D interface for SMS subscription (S6a/S6a+D) is described in Annex A.

The InterWorking Function between MAP-based C for SMS interface and Diameter-based S6c interface is described in Clause A.3

The InterWorking Function between MAP-based E for SMS interface and Diameter-based SGd interface is described in Clause A.2

For each IWF scenario, the present document will specify the mapping of related procedures and the corresponding parameter handling.

The present document will also specify the related mechanisms for the IWF, e.g. message routing, user data handling. The other mechanism, such as security, will also be described in this document as a part of the whole solution.

If there is no specific indication, the SGSN in the specification refers to a S4-SGSN which supports S4 interface.

2 References p. 8

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 33.401: "3GPP System Architecture Evolution: Security Architecture".

[3]

TS 23.272: "Circuit Switched (CS) fallback in Evolved Packet System (EPS); Stage 2".

[4]

TS 23.272: "Circuit Switched (CS) fallback in Evolved Packet System (EPS); Stage 2".

[5]

TS 29.272: "Evolved Packet System (EPS); Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) related interfaces based on Diameter protocol".

[6]

TS 23.204: "Support of Short Message Service (SMS) over generic 3GPP Internet Protocol (IP) access; Stage 2".

[7]

TS 23.003: "Numbering, addressing and identification".

3 Definitions, symbols and abbreviations p. 9

3.1 Definitions p. 9

For the purposes of the present document, the terms and definitions 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.

example:

text used to clarify abstract rules by applying them literally.

3.2 Symbols p. 9

For the purposes of the present document, the following symbols apply:

3.3 Abbreviations p. 9

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.

EPS

Evolved Packet System

IWF

Interworking Function

TAU

Tracking Area Update