High Efficiency AODV Routing Protocol Based on Link Availability Prediction in MANETs
Chao Liu, Aiqun Hu · Journal of Southeast University · 2007
To cope with the problem of low protocol efficiency of the standard ad hoc on-demand distance vector (AODV) routing protocol with the periodic Hello message broadcast mechanism, a new link availability prediction based strategy is introduced to reduce the amount of Hello messages. In this strategy, a novel wireless link availability prediction model under line-of-sight (LOS) propagation environments is proposed based on which the parameter of Hello Interval in AODV can be dynamically adjusted to achieve the goal of changing the frequency of Hello message broadcasts under different link stability degrees. Simulation results demonstrate that, compared with the standard AODV with the periodic Hello message broadcast mechanism, the proposed protocol effectively reduces unnecessary control message overhead and greatly improves the performance in terms of end-to-end delay and efficiency.