An energy-aware probability routing in MANETs

To provide portability, nodes in mobile ad hoc networks (MANETs) usually use battery as power. Thus the lifetime of the node is limited by its residual battery energy. Energy efficiency becomes a key issue to be considered in the network self-operating and self-managing process for MANETs. In order to maximize the node lifetime and further to maximize the network lifetime, the energy consumption of the nodes has not only to be minimized but also to be balanced. This paper proposes a new simple and efficient routing, called energy-aware probability routing (EAPR). EAPR introduces a probability model in the DSR (dynamic source routing) route discovery procedure, implicitly balances the communication traffic and further achieves balanced energy consumption among all the nodes in MANETs. We analyze the coefficient /spl alpha/ in the probability model and illustrate its effect on EAPR through simulations. Also simulations illustrate that EAPR outperforms DSR in terms of the balanced energy consumption distribution among the nodes in the network.