DEAR: a device and energy aware routing protocol for mobile ad hoc networks

Energy efficient routing has been the subject of intensive study. Most work has been focused on residual battery power related cost metrics for a homogeneous ad hoc network where all the nodes are considered identical in terms of functioning and available resources. We propose a device and energy aware routing protocol (DEAR) for a heterogeneous wireless ad hoc network with two different classes of nodes, externally-powered nodes and battery-powered nodes. We embed both the energy and the device awareness into the routing protocol so that externally-powered nodes would forward more traffic and perform more routing functions. The simulation results show that DEAR protocol achieves better system lifetime when compared to the conventional energy efficient routing protocols.