The Research of a Multiple Disjoint Paths Routing Protocol for Ad Hoc Sensor Networks

Due to the limited transmission range of wireless Ad hoc network nodes, multiple hops are usually needed for a node to exchange information with any other node in the network.Thus routing is a crucial issue to the design of a MANET.In this paper, a Source Routing based Multi-Path OLSR (SR-MPOLSR) protocol is proposed. In this protocol, MPRs (Multi-Point Relays) are used to obtain the network topology effectively and multiple Dijkstra algorithms are used to calculate multiple routes and to allocate the loads in a weighted round-robin fashion. Data transmission at the source is carried out through predetermined multiple paths (hence source routing). Our experiments have shown that SR-MPOLSR can increase the utility of network resources and network throughput, improve robustness and reliability of the transmission service, and reduce the average transmission delay.