GSM-R is becoming IP ready

GSM-R is becoming IP ready Robert SARFATI Operators’ Group Chairman ETSI Technical Committee Rail Chairman SYSTRA FIRSE

Background: GSM-R an European choice In Europe, existing standard technologies were considered for the new digital radio technology, The choice of GSM was finalized in 1995. GSM-R standards were developed based on GSM R99 technology and included all railways specific requirements and an allowance of a specific additional frequency range • Enhanced Location Dependent Addressing (eLDA) • Enhanced Railway Emergency Call (eREC) • Short Message Service to Functional Number • Functional Numbering • Location Dependent Addressing • High speed – up to 500 km/h Railway functional Requirements (EIRENE) • Voice Group Call Service (VGCS) • Voice Broadcast Service (VBS) • Enhanced Multi Level Precedence and Pre-emption(eMLPP) GSM enhancementsfor railways ( ETSI EN301515) ) • All functionalities available for GSM-R including • General Packet Radio Service (GPRS) • Enhanced Data Rates for GSM Evolution Standard GSM functionality l Applications

Functionalities ensured by GSM-R • GSM-R is a worldwide standard, developed within the frame of the GSM ETSI standards to include Rail & Transport needs. • It includes a dedicated radio spectrum for exclusive rail use, all over Europe. • It is the bearer for ETCS and Track-to-Train radio . • It allows for evolution towards Packet Switching GPRS/EGPRS • It includes features specific for Railways operations . • It includes a dedicated European Frequency Band (876-880 / 921-925 MHz) with extension possible within (873-915 / 918-960 MHz) and other GSM frequency bands* such as the 1800 MHz for worldwide application. * As listed in ETSI TS 100 910

Standardization: a continuous process Rel '99 Phase 2 Rel-4 Rel-N 1992 1997 2000 2001 2002 GPRS EGPRS GSM 3GPP/UMTS/LTE Rel-12 2013 Rel '99: Release 1999

From an European standard • In most of the European Countries GSM-R is in operationand ETCS L2 roll out is relying on GSM-R: • 70,000 km of track are in GSM-R operation just in Europe and 84,000 km more are planned to be covered in addition.*) *) source: UIC e-News 311

To a worldwide standard GSM-R is expanding worldwide: 138,000 km are planned to be covered outside Europe. * • With Contracts awarded** in: • India • Turkey • Saudi//UAE/Qatar/Oman • Algeria/Libya/Morocco/Tunisia • South Africa • Australia • China • Russia/Turkmenistan * Source: Kapsch CarrierCom, Nokia Siemens Networks - GSM-R in operation ** Source UIC and GSM-R IG

MoU ERTMS– A Memorandum of Understanding ERTMS was signed between the European Commission, European Railway Agency and the Rail Sector Organisations : The Parties note the commitment of the GSM-R Industry Group members to the long-term support of GSM-R technology, at least until 2025. Nevertheless telecommunications systems usually have a much shorter life cycle than signalling systems. For this reason, it should be possible to replace the 'telecommunications part of on-board equipment without this having an impact on the 'safety critical signalling path. Today ETCS applications work with GSM-R circuit-switched services. It does seem possible, however, to use packet-switch systems (e.g. GPRS) and, in the longer term, other IP-based standards, without impacting on the ETCS specifications. From the European Legislation perspective

Two Mandates were notified and endorsed by CEN/CENELEC and ETSI. Mandate M/483 – Mandate for programming and standardization addressed to the European Standardization Organizations under Directive 2008/57/EC in the field of the interoperability of the rail system within the European Union. Mandate M/486 – Mandate for programming and standardization addressed to the European Standardization Bodies in the field of urban rail. From the European Mandates perspective

Step 1: Needs analysis Narrow Band & Mission Critical Applications Train Radio ETCS Operation and Maintenance Teams Train Maintenance crew applications Broadband Driver Look Ahead CCTV Real time passenger video information Mail, WEB for passengers • Red – Railway Network supported applications Critically for Railway Operations • Blue – Potential Parallel networks supported applications Bandwidth

Step 2: NSS and FTS Migration FTS Foreign Network From R99 To R4 BICN • NSS: • From R99 to BICN R4 Core Network architecture and PS Roaming Exchange • NSSto FTS: • SIP introduction at Interface, VRS with IP interface. • Transmission network • IP Guideline • IP QoS • GPRS/EGPRS for ETCS BSS BSC Growing, improved applications BTS BICN: Bearer Independent Core Network PS : Packet Switching IP: Internet Protocol QoS: Quality of Service SIP: Session Initiation Protocol

Step 3: BSS & Terminals Migration FTS Foreign Network From R99 To R4+ features • NSS: From R4 to R4+ Core Network architecture and features • NSSto FTS: SIP phase 2 introduction at Interface • Transmission network : IP introduction within distributionnetwork • IP BSS: • “Full IP end to end interface over the Abis interface of BSS” • Terminals • Software Defined Radio • VoIP over the Air interface BSS BSC IP: Internet Protocol FTS: Fixed Terminal System SIP: Session Initiation Protocol VOIP: Voice Over IP NSS: Network Subsystem BSS: Bas Station Subsystem BTS

The analysis showed that communication technology evolution is not complete, but the IP based technology is the only stable platform. The worldwide evolution shows that GSM/UMTS is still a long term technology for voice and preserves more than 80% of railways assets while evolving toward IP. The roadmap should be « railways needs evolution » based, not « technology only » driven. It shall, if possible, address “all transport” needs, and if feasible worldwide through a 3GPP type organization. GSMR-IP is Global, allows from the Shelves delivery, ensures Multi-supplier environment, is Reliable, prepared for Innovation and answers Promises. Conclusion

THANK YOU rsarfati@systra.com www.systra.com UIC ERTMS/GSM-R Operator’s Group Chairman European Telecommunications Standard Institute Rail Telecoms Chairman

GSM-R is becoming IP ready