LAUSR

Efficient routing and broadcasting among a set of nodes play a critical role in wireless adhoc networks. for energy efficient routing, a connected dominating set (CDS) based virtual backbone is a promising approach. In the network, one-hop neighbors are selected as multi point relay (MPR) by each node to cover all its two-hop neighbors for the purpose of broadcasting and 2-hop repair. To improve the network lifetime, energy efficient MPR based CDS construction has been proposed by considering the node degree, energy level, node ID and velocity of the node. We also propose a route discovery protocol to relay route request messages, which makes use of the CDS nodes to obtain a stable routing path; 2-hop repair for route maintenance, which reduces the path damage (reduced control packets with lesser consumption of bandwidth) and broadcast storm problem. The simulation results show that the proposed protocol increases the network lifetime up to 30% than other works and effectively repair damaged routes by reducing control packets.