Conception d'algorithmes de mise en trame selon la norme IEEE802.16E .

摘要

The WiMAX mobile systems are an interesting alternative to the broadband access systems which are the cables or the xDSL. Indeed, the transport networks capacity becomes very important and the demand for services using broadband grows rapidly. On the other hand, the access to the network at a reasonable cost could not follow this evolution. This is why the WiMAX mobile systems cause much interest for industry and also for scientific research.;The thesis presented here describes only one method. This method is the optimal filling of the frame while respecting the order of the arrivals of the packets provided by the scheduler.;Two algorithms are presented in this thesis in order to choose the best option. The first algorithm is based on the combination of different bursts to determine which combinations will ensure the optimal filling of the frame. The second algorithm is based on the principle of largest first, i.e. the frame will be filled initially by burst which will occupy the greatest number of slots then the following until the final filling of the frame.;The performance of these algorithms is evaluated on the basis of rate of filling of the frame as well as the execution time of each algorithm.;The principal objective of this thesis is to increase the performances of the WiMAX mobile system in term of the throughput while ensuring a better quality of service. In order to achieve this goal, various methods can prove very useful.