ETSI - TR 103 768
Rail Telecommunications (RT); Future Rail Mobile Communication System (FRMCS); Interworking study with legacy systems
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
