A robust AODV protocol with local update

These days ad hoc networks have found many applications. Multiple ad hoc routing protocols have been proposed, of which on-demand routing protocols are very popular because they are easy to realize and have low routing overhead. However, on-demand routing protocols are not robust against topology variations and routes break often in the case of high mobility, which degrades the communication performance. We analyze the ad-hoc on-demand distance vector (AODV) routing protocol. Then we propose a robust AODV protocol, where the route is built on demand and maintained by locally updating route information. Multiple backup routes are built around the active route and the highest priority backup route is switched to become the new active route when the current active route breaks or is less preferred. In our robust AODV protocol, routes adapt to fast topology variations and reach local optimum quickly. Simulation results show that our robust AODV protocol acquires higher performance than the original AODV.