RESOURCRESOURCE SCHEDULING AND CONGESTION CONTROL FOR WMN

摘要

The guarantee technology of MAC quality of service (QoS) for Wireless Mesh Network is proposed in this paper. While the MAC protocol of IEEE 802.16 Mesh mode has provided a good framework for QoS guarantee, there is not a detailed standard for the resource scheduling algorithm in the MAC protocol. So further development is left to designers. According to the characteristics of WMN, this paper presents a resource scheduling algorithm. Also, the paper designs a new congestion detection module in MAC layer. With the help of the new congestion detection module, the congestion handling capacity of the network is improved and QoS guarantee mechanism is enhanced. To evaluate the performance of the algorithm, a simulation platform is set and implemented. The simulation results show that the new resource scheduling algorithm and congestion detection algorithm not only ensure the service priority of real-time operation but also improve the resource utilization and the network throughput.