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ETSI - TR 103 768

Rail Telecommunications (RT); Future Rail Mobile Communication System (FRMCS); Interworking study with legacy systems

active, Most Current
Organization: ETSI
Publication Date: 1 September 2022
Status: active
Page Count: 43
scope:

The present document analyses the interworking scenario between FRMCS and GSM-R and the solution applicable to GSM-R. The focus is on GSM-R services equivalency such as voice, SMS, data and other services.

The present document presumes the existence of an interworking function IWF between FRMCS and GSM-R, however the IWF and the interface between IWF and GSM-R network are not specified.

ETSI TS 123 283 [i.13] specifies the stage 2 of interworking of MCX Systems with LMR Systems, where the requirements of interworking between FRMCS and GSM-R have not been considered completely.

NOTE: It is assumed that FRMCS is based on MCX Systems and interworking with GSM-R is to be defined on the same basis of the interworking with LMR systems.

The present document reviews this interworking from three viewpoints:

GSM-R EIRENE specification of services

MCX System ETSI TS 123 283 [i.13]

FRMCS 3GPP TS 22.889 [i.3]

This study focuses on the identification of key functions, key issues and solutions recommended for way forward resulting in end to end use cases for the IWF.

Prerequisites & Assumptions:

1) The interworking and interconnect is based on SIP interface.

2) The interworking is based on SIP protocol for signalling and RTP protocol for bearer (G.711 codec and AMR-WB as option).

3) The service continuity is not foreseen as per 3GPP TS 22.889 [i.3].

4) Cybersecurity is not part of this study.

Document History

TR 103 768
September 1, 2022
Rail Telecommunications (RT); Future Rail Mobile Communication System (FRMCS); Interworking study with legacy systems
The present document analyses the interworking scenario between FRMCS and GSM-R and the solution applicable to GSM-R. The focus is on GSM-R services equivalency such as voice, SMS, data and other...

References

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