Research Of Node-Disjoint Multipath Routing Protocols For Ad Hoc Networks

Ad Hoc network is a mutiple-hop wireless network. It is consisted of a series of independent wireless nodes. This network doesn't need any fundamental equipment, such as base station, and it is managed in distributed way.The nodes in Ad Hoc move randomly that makes the topology always changed dramatically. Additionally, the available bandwidth is very limited in wireless communication environment so the key challenge here is to design a particular route protocol with low overheads in dynamic conditions.Ad Hoc route protocols can be divided into single-path protocol and multiple-path protocol by the number of available paths when sending data packets. Mutiple-path protocol is able to decrease the times of flood through the whole network, enhancing the security of delivery.And it can establish several paths in one route discovery.Multiple-paths disjoint protocol can be divided into node-disjoint protocol and link-disjoint protocol.The node-disjoint protocol has higher error allowance ability. We studied the classic single-path protocol AODV, mutiple-path protocol AOMDV (Ad hocOn-demand Multipath Distance Vector) and discussed how to get rid of loop route.In this paper, a novel mutiple-path route protocol (MROUTE) based on AOMDV is presented.In MROUTE protocol, the intermediate nodes record neighbor nodes which send RREQ packets. The destination nodes manipulate RREQ packets which record the source route.The experiment result shows that the MROUTE multiple-path protocol is well suitable in Ad Hoc network.