无线mesh传感器网络跨层路由算法

针对无线mesh传感器网络的需求，提出一种综合量度的跨层路由协议H工.S。算法H工S利用底层的链路质 量信息、MAC层时隙分配信息，结合跳数对备选路径做出综合判断，避开质量较差的链路和负载较重的节点。路由发 现过程中在中间节点设置链路质量和节点负载阂值，并根据相关信息进行延时转发操作，以减少不必要的路由开销。 在路由维护阶段使用主动和被动相结合的方式全面检测路由路径。NS2的仿真结果表明，HLS协议在吞吐量、端到 端时延以及网络生存时间上有更好的表现。

Cross-layer Routing Metric for Wireless Mesh Sensor Network

For the reduirements of wireless mesh sensor network, a comprehensive measure of cross-layer routing proto- col HLS was proposed. HLS algorithm uses the link quality information at the bottom, distribution information of MAC layer and combines with hop counts to make comprehensive judgment for the alternative route to avoid lower quality link and heavy load nodes. In the pros(ss of route founding,link quality and node load thresholds arc set in the middle nodes and the delay forwarding operations are taken according to relevant information to reduce unnecessary routing o- verhcad. In the routing maintenance phase, passive and active methods arc used to detect the routing path comprchensivly. Simulation results of NS2 show that HLS has better performance in throughput capacity, end-to-end delay and network life time.