An Energy Constrained Routing Protocol for MANET

The study of energy constrained routing protocols in mobile Ad Hoc Networks (MANET) is attracting more attention recently. The typical MANET routing protocols of IETF are shortest routing protocols, that is, the least hops but do not consider the energy aware problem. Because the ad hoc network is an energy constrained system with the portable devices, it is a very important metric to evaluate the routing protocols whether which have a longer network lifetime or not. Based on the mobile node energy level and using the different forward tactics, this paper presents an energy level based routing protocol - ELBRP. The routing protocol not only makes the system energy consumption low but also prolongs the system lifetime and improves the delay characteristic. In this paper, the proof of correctness and complexity analysis of ELBRP are given. This paper compares the performance of existing protocols AODV, RDRP and proposed ELBRP via simulation. The simulation result shows that ELBRP has a better delay performance, a lower energy consumption and longer network lifetime than the other two and provides an available approach to ad hoc networks routing.