Daniel Wagner

Électricité de France (EDF) | EDF · Es

Future mobile systems will require huge radio network densities. Consequently, radio network planning and optimization may become a tedious problem. In this paper, a mathematical model of the radio network planning problem is proposed and results obtained with a software implementing this problem and working with real geographical data are discusse...

Size and complexity of future UMTS radio networks make their planning very difficult. This paper focuses on the radio coverage problem, that is, to cover a maximum surface of a given geographical region at an optimal cost. This combinatorial optimization problem is solved with a bioinspired genetic algorithm. A first prototype runs in parallel on a...

Future mobile systems will require huge radio network densities. Consequently, frequency planning and network simulation may become a tedious problem due to the large number of events that must be simulated. In this paper, we analyze a dynamic channel assignment algorithm by using a parallel discrete event simulator

One of the issues a telecommunication vendor must face when deploying a cellular network is the selection of good locations for base transceiver stations (BTSs). Roughly speaking, the problem comes down to finding out the best possible sites for BTSs, while guaranteeing that all --or at least a given percentage of-- the traffic can be served and th...

Computing the radio coverage for networks of FM or TV transmitters needs a lot of high performance computing resources. The client-server architecture of the Web allows the clients to work with these computing utilities by a Web-interface. But the hypertext language permits only limited interactivity for Web-applications. The programming language J...

Future UMTS radio planning engineers will face difficult problems due to the complexity of the system and the size of these networks. In the STORMS project, a software for the optimisation of the radio network is under development. Two mathematical models of the radio planning problem are proposed. Two software prototypes based on these models are...

Computer implemented radio propagation models tend to be time-critical, especially when they are applied to large areas. At TDF-C2R, such a model has been developed and included in a PC software. It was then parallelized on a network of SUN workstations and ported to a massively parallel computer, the CRAY T3D. Different technical approaches were e...

This paper reports an experiment of such a network within PVM framework in the telecommunications field. In TDF-C2R a windows-based software has been developped for digital TV network coverage simulation. But simulation is strongly limited for large planning exercices because of computing time needed. For example, the exercice over 6400km

The method aims at providing methods and tools for Universal Mobile Telecommunication System (UMTS). These methods and tools are automated as far as possible in a planning tool software. The approach is a forward and synthetic one, i.e. the cell configuration is the main output of the software tool. This approach is led by the user's requirements,...