无线网状网服务质量路由研究

Research on Wireless Mesh Network QoS Routing

无线网状网允许系统同时使用多个正交信道,以达到提高网络性能的目的。但是干扰问题仍然存在。基于TDMA提出了一种没有干扰的系统模型。基于这种模型,一种启发式的路径带宽计算方法被提出。将这个算法和AODV路由协议相结合,可以建立一条满足服务质量的最短路由。通过仿真实验结果证明了该路由协议相比SPR能明显提高QoS路由的请求成功率。

Wireless mesh networks allow multiple orthogonal channels to be used simultaneously in the system to improve the throughput, but interference still can＇t be avoided. The paper studied TDMA-based timeslot allocation to schedule links efficiently, and presented an effective heuristic algorithm for calculating end-to-end bandwidth on a path, which is used together with AODV to setup QoS routes. Simulation results show that compared with the shortest path routing,our interference-aware QoS routing algorithm always increases success ratio of finding a route with required bandwidth to destination node.