ALLOCATION CONJOINTE DES CANAUX DE FREQUENCE ET DES CRENEAUX DE TEMPS ET ROUTAGE AVEC QdS DANS LES RESEAUX DE CAPTEURS SANS FIL DENSES ET ETENDUS

摘要

The general context of the present memory is about the cross-layer optimization of wire- less sensors networks based on ultra wide band technology UWB. The proposed solutions en- sure the share and the efficient allocation of spectral and temporal resources, the optimization of the energy consumption and the support of multi-constraints quality of services QoS. The most challenging issue is providing a tradeoff between the resource efficiency and the multi- constrained QoS support. For this purpose, we proposed a new Wireless Hospital Sensor Net- work (WHSN) three-tiered architecture in order to support large-scale deployment and to im- prove the network performance. Then we designed a channel allocation scheme (UWBCAS,) and a prioritized multi-channel multi-time slot MAC protocol (PMCMTP) to enhance network performance and maximize the resource utilization. Finally, we proposed a joint duty cycle scheduling, resource allocation and multi-constrained QoS routing algorithm (JSAR) which simultaneously combines, a duty cycle scheduling scheme for energy saving, a resource al- location scheme for efficient use of frequency channels and time slots, and an heuristic for multi-constrained routing protocol.