An Efficient Dynamic Route Optimization Algorithm for Mobile Ad hoc Networks

In mobile Ad hoc networks, topology changes caused by mobile nodes may lead to the occurrence of link failure and redundant links. The link failure issue can be solved by insert relay nodes, but the latter question is not settled well. This paper presents a dynamic route optimization algorithm DROA which can effectively continue to optimize the path. With the topology changes, the algorithm chooses the optimal route to update the transmission path periodically, thereby reducing the number of hops and delay, avoiding restart the route discovery, saving control traffic and energy cost. The NS2 simulation platform is chosen to verify the performance of our algorithm. Experimental results show that in comparison with AODV, DROA has a better performance in end-to-end delay, path length and route life without more energy consumption. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of the Intelligent Information Technology Application Research Association.