A Node-Disjoint Multipath Routing Protocol Based on AODV in Mobile Ad Hoc Networks

In this paper, we propose a new multi-path routing protocol in MANET that is composed of high-mobility nodes. The new multi-path routing establishes the main route by the mechanism based on AODV, and then the data transmission starts immediately. The backup route search process is taking place while data is transmitted to reduce the transmission delay. This process finds the route that is node-disjoint from the main route by not selecting nodes participate in the main route. When either of the main route or the backup route is broken, data is transmitted continuously through the other route and the broken route is recovered by the route maintenance process. The result of the simulation based on the Qualnet simulator shows that proposed routing protocol has the backup route 62.5% of the time when the main route is broken, improves the packet transmission rate by 2~3% and reduces the end-to-end delay by 10% compared with AODV and AODV-Local Repair.