Disjoint nodes multipath routing algorithm for WSN

How to find the multi-path route with disjoint nodes,as a valid way to improve the energy efficiency and reliability of networks,can greatly save network resources.This paper proposes a disjoint multi-path routing of WSN,named DMPRW.In this algorithm,all nodes are distributed into different hop layers in terms of the number of hops to the s node,and the sink node starts the route process by broadcasting the routing message to all nodes from layer to layer.At last,DMPRW builds many disjoint paths to sink for each node.The loop free and disjoint route characteristics are proved theoretically,and traffic and energy balance are ensured.Finally,DMPRW is embedded in the DD(Directed Diffusion) protocol,and simulation results show that DMPRW can lead to higher reliability and energy efficiency than the traditional single path DD protocol.