Energy aware proactive optimized link state routing in mobile ad-hoc networks

摘要

In this paper we develop a novel energy aware routing approach for mobile ad hoc network (MANET) problems. The approach is based on using Optimized Link State Routing Protocol. Our Energy Aware OLSR labeled as OLSR_EA measures and predicts per-interval energy consumptions using the well-known Auto-Regressive Integrated Moving Average time ser ies method. We develop a composite energy cost, by considering transmission power con sumption and residual energy of each node, and use this composite energy index as the routing metric. Our extensive ns2 simulation experiments show that OLSR_EA substan tially prolongs the network lifetime and saves total energy used in MANET. In our experi ments we considered different scenarios considering a variety of traffic loads, node mobilities, homogeneous power consumption, and heterogeneous power consumption. Simulation results also confirm that OLSR_EA improves the traffic balance between nodes, and packet delivery ratio in higher node speed. We further develop characteristics of OLS R_EA in power-wise heterogeneous MANET to achieve efficient energy preserving performance.