WRC 2019 Agenda Item Details

Agenda Item: Agenda Item 1.11
Resolution(s): Resolution 236 [COM6/12] (WRC-15)
Description of work:

This agenda item relates to taking 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 [COM6/12] (WRC-15).

The Resolution notes that Study Group 5 is studying relevant technical and operational characteristics for railway radiocommunication systems.

It also emphasizes that the provisions of Nos. 1.59 and 4.10 (relating to safety services) do not apply for railway radiocommunication systems.

The ITU-R is invited to study the spectrum needs, technical and operational characteristics and implementation of railway radiocommunication systems between train and trackside.

Lead Working Party(s): WP 5A
Involved Working Parties: WP 3K, WP 4A, WP 4B, WP 4C, WP 5B, WP 5C, WP 5D, WP 6A, WP 7B, WP 7C, WP 7D
How Visualyse products can help: Visualyse Professional can model moving communications between trains and trackside stations or other systems that might share spectrum with them such as those in the fixed, mobile and broadcasting service. Analysis can be undertaken at a range of frequencies including VHF using static, dynamic, area or Monte Carlo methodologies for both co-frequency and non-co-frequency scenarios. Trains can be defined to follow known tracks to calculate either likelihood of interference or interference zones. Detailed models can include traffic and transmit / receive masks for non-co-frequency analysis. Propagation models such as P.1546, P.1812 and P.2001 can be used which take account of terrain and/or clutter databases or generic models such as Hata / COST 231 used.
How Transfinite consultants can help: We can undertake studies including analysis of sharing between the services covered by this agenda item, and identify suitable system characteristics and sharing criterias, and provide contributions and representation at ITU-R Working Parties. Using our in house Visualyse Professional we can quickly model a very wide range of systems, services and scenarios.
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