AI 1.11 RSTT

Agenda item 1.11

 

1.11            to take necessary actions, as appropriate, to facilitate global or regional harmonized frequency bands to support railway radiocommunication systems between train and trackside within existing mobile service allocations, in accordance with Resolution 236 (WRC-15);

 

Resolution 236 (WRC‑15)Railway radiocommunication systems between train and trackside (RSTT) invites WRC-19, based on the results of ITU-R studies, to take necessary actions, as appropriate, to facilitate global or regional harmonized frequency bands, to the extent possible, for the implementation of railway radiocommunication systems between train and trackside (RSTT), within existing mobile service allocations.

The ITU-Radiocommunications sector (ITU-R) has undertaken studies towards the development of two ITU-R Reports and one Recommendation.

Three methods have been proposed to satisfy this agenda item:

–                 Method A: No change to the RR except suppression of Resolution 236 (WRC‑15);

–                 Method B: Add a new Resolution specifying frequency ranges for RSTT and referencing the most recent version of Recommendation ITU-R M.[RSTT_FRQ] and consequently suppress Resolution 236 (WRC-15);

–                 Method C: Add a new Resolution without specifying frequency ranges for RSTT while referencing the Recommendation ITU-R M.[RSTT_FRQ] and consequently suppress the Resolution 236 (WRC-15).

 

Background

RSTT provide improved railway traffic control, passenger safety and improved security for train operations and the evolving radiocommunication technologies facilitate the railway transportation. Train radio provides voice communications, signalling and traffic management with the aim of safe train operation. Train positioning information aids rail network management. Data communication between a locomotive and fixed infrastructure enables remote control of the engine. Video of the public and trackside areas of a network enhance safety. Currently RSTT implementation varies in different countries, leading to high operational costs for international railway transportation. Internationally harmonised standards will improve interoperability of RSTT, reducing the railway infrastructure investment and providing for economies of scale. railway line, railway station, shunting yard, maintenance base and railway hub.

ITU-R studied the generic architecture, main applications, current technologies, generic operating scenarios of RSTT and developed a Report addressing mainline, railway station, shunting yard, maintenance base and railway hub scenarios. These study results provide useful elements to facilitate global or regional harmonisation of frequency bands to support RSTT within existing mobile service allocations. Some frequency bands are already harmonised in many of the CEPT countries within Region 1, especially for RSTT train radio applications. Radiocommunication systems for train radio and train remote applications of RSTT are mostly deployed in the frequency bands below 1 GHz within existing mobile service allocations. Train position and sensing systems use various frequency bands often allocated to the radiolocation service allocations depending on the application. Surveillance systems use bands used in other industries for such applications.

One case study on spectrum needs of RSTT in Report ITU-R M.2442 shows that the total spectrum needs of train radio applications of RSTT in a typical scenario would be 11.9 MHz to 14.04 MHz (for uplink), and 4.7 MHz to 8.37 MHz (for downlink).

Methods to address the agenda item

Method B and C both propose a new resolution. A new WRC Resolution specifying frequency ranges for RSTT could provide a regulatory framework to guide the harmonisation process. An ITU-R Recommendation recommending possible global and/or regional harmonisation of frequency arrangements for RSTT could provide flexibility.

 

Irish position

Ireland as a member of the CEPT supports Method A. CEPT believe that existing frameworks are sufficient to provide for improved railway traffic control, passenger safety and improved security for train operations.

CEPT is of the view that harmonisation of frequency bands for RSTT use can be achieved through the course of ITU-R study group work and by applicable ITU-R Recommendations and/or Reports. Thus it is not necessary to request specific action of a WRC to harmonise spectrum for RSTT, therefore no changes to the Radio Regulations are necessary.