Content for TR 23.796 Word version: 16.0.0

0 Introduction p. 10

The railway community's requirements for next generation railway communications have been captured in 3GPP stage 1 requirements. This study provides architectural analysis for the functionality to be specified to meet those requirements.

1 Scope p. 11

The present document captures architectural requirements to develop solutions for the Future Railway Mobile Communication System (FRMCS) to meet Rel-16 normative Stage 1 requirements.

The normative Stage 1 requirements are specified in TS 22.280, TS 22.179, TS 22.281, TS 22.282 and TS 22.289.

The study uses existing 3GPP functionality and those specified for Mission Critical Communication in normative specifications TS 23.379, TS 23.280, TS 23.281, TS 23.282 and TS 23.283 as working basis.

This document will provide recommendations for normative work.

2 References p. 11

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 22.280: "Mission Critical Services Common Requirements".

[3]

TS 22.179: "Mission Critical Push to Talk (MCPTT); Stage 1".

[4]

TS 22.281: "Mission Critical Video".

[5]

TS 22.282: "Mission Critical Data".

[6]

TS 22.289: "Mobile communication system for railways".

[7]

TS 23.379: "Functional architecture and information flows to support Mission Critical Push To Talk (MCPTT); Stage 2".

[8]

TS 23.280: "Common functional architecture to support mission critical services; Stage 2".

[9]

TS 23.281: "Functional architecture and information flows to support Mission Critical Video (MCVideo); Stage 2".

[10]

TS 23.282: "Functional architecture and information flows to support Mission Critical Data (MCData); Stage 2".

[11]

TS 23.283: "Mission Critical Communication Interworking with Land Mobile Radio Systems".

[12]

TS 23.002: "Network architecture".

[13]

TS 43.068: "Voice Group Call Service (VGCS); Stage 2".

[14]

TS 43.069: "Voice Broadcast Service (VBS); Stage 2".

[15]

ITU-T Recommendation E.164: "The international public telecommunication numbering plan".

[16]

ISBN 2-7461-1832-4: "UIC Project EIRENE System Requirements Specification".

[17]

TS 23.067: "enhanced Multi-Level Precedence and Pre-emption service (eMLPP); Stage 2".

[18]

TS 33.180: "Security of the mission critical service".

[19]

TS 24.379: "Mission Critical Push To Talk (MCPTT) call control; Protocol specification".

[20]

TS 24.281: "Mission Critical Video (MCVideo) signalling control; Protocol specification".

[21]

TS 24.282: "Mission Critical Data (MCData) signalling control; Protocol specification".

[22]

TS 22.289: "Mobile Communication System for Railways; Stage 1".

3 Definitions and abbreviations p. 12

3.1 Definitions p. 12

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.

ASCI

Advanced Speech Call Items are used in GSM-R for Voice Group and Voice Broadcast communication. For ASCI stage 2 3GPP specifications TS 43.068 and TS 43.069 are applicable and are utilizing circuit switched bearer services.

PtP

Point to Point voice communication are provided by GSM-R using circuit switches bearer services.

3.2 Abbreviations p. 12

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.

Country Code

EIRENE

EUROPEAN INTEGRATED RAILWAY RADIO ENHANCED NETWORK

eMLPP

enhanced Multi-Level-Precedence-Pre-emption

GCR

Group Call Register

IWFR

InterWorking Function Railways

MLPP

Multi-Level-Precedence-Pre-emption

NDC

Network Destination Code

VBS

Voice Broadcast Service

VGCS

Voice Group Call Service