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THE HILLS ARE ALIVE TO THE SOUND OF TETRA

THE HILLS ARE ALIVE TO THE SOUND OF TETRA

Motorola is planning a Tetra network in one of Europe’s most mountainous nations and turned to ATDI for the expert planning and modelling advice it needed to make the planned system a reality.

The foundation stone and starting point of the project was, as always, cost. All operators are eager to offer the maximum service for the minimum cost and these factors often pull in opposite directions. Motorola and ATDI had, then, to work out optimum balances within the context of the maximum number of base stations acceptable and the tough coverage specification requiring that virtually everybody everywhere within the national borders would get a signal.

ATDI, which has worked with numerous operators across Europe on such network roll-outs, had to answer specific questions:

* How many sites would be needed to provide the service?
* How many existing radio masts could be used efficiently?
* How many new sites needed to be built – and how feasible that was given the constraints?

To answer these questions, ATDI used its flagship planning and modelling software, ICS Telecom. ICS Telecom provided answers to the basic issues as well as modelling new scenarios as the parameters – practical and financial – of the proposed network changed.

The structure of the proposed network altered several times as the work progressed. A shift in the planned siting of one base station has impacts on all the base stations around it, meaning that a seemingly simple and isolated decision can have an effect across the whole network. This resulted in the plan for the system being repeated with different approaches to ensure that the optimum solution had been achieved.

Each change in the network had to be planned and modelled afresh; ICS Telecom includes a feature which means that much of this repetitive work was carried out automatically, freeing engineers’ time for other tasks and saving time overall.
One of those tasks in this instance was to find appropriate base station sites. Some of the original sites designated for the service were not the most effective for the task and staff from ATDI and Motorola had to spend some time finding alternatives which would be more effective yet still within cost parameters.

“It has been the most interesting of challenges,” comments ATDI managing director Cyprien de Cosson. “Just about every difficulty that an engineer could face – from money to politics to geography – was inherent in this job which is why it is so gratifying that the end result achieved everything that it was intended to.”

Motorola project manager John Brewer says: “Achieving the analysis of the many possible options and approaches to this project in such a short time would not have been possible without ICS Telecom and ATDI staff skills.”

ATDI will be exhibiting at the Scandinavian TETRA Seminar in Fredrikstad, Norway from 12-13 October 2010. For more information visit: www.tetramou.com/events

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For further media information please contact:

Sarah Sasson, Marketing manager
+44 (0)1293 522052, email sarah.sasson@atdi.co.uk

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