Two-level routing protocol for mobile sensor network based on LEACH algorithm

In many typical wireless sensor networks, the nodes are fixed, where cluster based protocols like LEACH were suitable for routing. However, it is another story when the nodes are mobile. This paper proposes a novel routing protocol supporting node mobility called “2L-LEACH-M”, it divides the nodes into two levels: level 1 (cluster-head level) or level 0 (member level), which makes mobile nodes find a cluster-head more easily and hence ensures higher success rate of data transfer between the cluster-head and collector-nodes even when nodes are moving. We have evaluated our proposed protocol under NS2 and the results show that 2L-LEACH-M can significantly improve data transfer rate, compared to LEACH under mobile scenario.