Cross-layer Routing Metric for Wireless Mesh Sensor Network

For the requirements of wireless mesh sensor network,a comprehensive measure of cross-layer routing protocol 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 process of route founding,link quality and node load thresholds are set in the middle nodes and the delay forwarding operations are taken according to relevant information to reduce unnecessary routing overhead.In the routing maintenance phase,passive and active methods are used to detect the routing path comprehensivly.Simulation results of NS2 show that HLS has better performance in throughput capacity,end-to-end delay and network life time.