I. Improvement of Qos by Dynamic Reallocation of the Mesh Deterministic Access in Wireless Mesh Networks Ieee 802.11s

Wireless Mesh Networks (WMNs) are now of the emerging networks in IP world, because of their robustness, simplicity, fault tolerant ability and fast deployment. Realizing the fact that there is adequate need of improvement in QoS researchers have been proposing various techniques to address the issue. We propose a scheme that is based on modification of Dynamic Reallocation of the Mesh Deterministic Access and MAC layer´s contention-based distributed coordinated function (DCF) or contention window (CW) that is responsible for sharing the wireless medium. We study the influence of Mesh Coordination Function (MCF) and Hybrid Coordination Function (HCF) by modifying the normal MAC layer to improve and ensure Quality of Service by various parameters. The results obtained after simulations are quite promising and show that our proposed modification significantly improves QoS for WMNs to model presented in IEEE 802.11s/D4.0 [1].