AODV Protocol Improvement Based on Path Load and Stability

Mobile Ad Hoc Network is one of the most important and unique wireless networks independent of any network infrastructure. The whole network is mobile, and the individual nodes are allowed to move freely, and the topology changes dynamically with the movement of nodes. Nodes communication depends on routing protocol for planning and confirmation. For example, AODV protocol selects the shortest path as the single route selection metric which is easy to result in unbalanced network load and path instability, etc, as a result, performance of all aspects of the network is affected and performance is degraded. The most sensitive challenge that MANET faces is to select route metric. Many protocols select hop as the single metric, network load balancing, path stability and other problems is not considered. if the network load is too heavy, the network will be congested, path instability can also easily cause link disruption, which will affect the overall performance of the network. Based on the AODV protocol, this paper proposes a new metric which takes into full consideration of energy, velocity and path hops in order to find a path with high residual energy and high stability in the meantime. The simulation results show the proposed method can obtain better experimental results, compared with the AODV method.