无线Mesh网络公平感知路由算法设计与仿真

为了减小无线Mesh网络(WMN)路由的不稳定性,基于DSR提出了一种新的可预测公平感知路由协议算法(PFRP),利用MAC的网络状态信息传给网络层DSR路由代理,以便选择到目的地的拥塞和延时更小的最佳路由。此外,还综合考虑了通过统计和估计获得的链路可用带宽和节点队列负载容量等因素,相对于拥塞程度概念提出了一个新的路由准则"拥塞控制度"来表征网络节点传输的拥塞控制状态。大量仿真结果表明提出的路由算法体现了比DSR协议更好的网络流传输公平性及负载均衡性能,如延时和吞吐率。

Design and Simulation of Fairness-aware Routing Algorithm in Wireless Mesh Networks

In order to improve routing stability of Wireless Mesh Network (WMN),a novel Predictive and Fairness-aware Routing Protocol algorithm (PFRP) based on DSR was proposed. PFRP exploited network state information in MAC layer and passed it to the DSR routing agent,so that DSR agent chose the best route with less congestion and delay towards the final destination. Moreover,a new metric "Degree of Congestion Control" contrary to the concept of degree of congestion was proposed to denote the state of congestion control for transmission in the network node,which combined the available link bandwidth and the queue load capacity of node acquired by statistic and estimation methods. Simulation results show the better performance,such as fairness and load balancing of network flows,than that in DSR including delay and throughput is achieved with PFRP in WMN.