Energy Efficient Route Discovery for Mobile HCI in Ad-Hoc Networks
DOI: 10.1007/978-3-540-73354-6_70 Conference: Human Interface and the Management of Information. Interacting in Information Environments, Symposium on Human Interface 2007, Held as Part of HCI International 2007, Beijing, China, July 22-27, 2007, Proceedings, Part II
A mobile ad-hoc network  is a set of mobile nodes acting as routers in infrastructureless networking situations. In ad-hoc environments, to extend the lifetime of wireless mobile hosts, energy-efficient ad-hoc routing protocols must be designed. However, in conventional reactive ad-hoc routing, the route discovery operation is triggered whenever a source node has packets to send to a certain destination, but has no route information for the destination. Intermediate nodes, then, repeatedly broadcast the message until it is received by all nodes. This route discovery process could result in excessive drain of limited battery power and increase collisions in wireless transmission. In this paper, we propose an energy efficient route discovery scheme using the K-hop Pre Route Request (PRREQ) message which is only flooded within K hops from the source node. This reduces the number of nodes that participate in the route discovery process. Our empirical performance evaluation, which compares our proposed scheme to the conventional reactive adhoc routing schemes, demonstrates that proposed enhancement reduces energy consumed in the route discovery procedure by about 27% when each node initiates a new route at a rate of 0.05/sec.
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ABSTRACT: Mobile Ad hoc Network (MANET) is a form of short term based network that contains multidimensional nodes having major concern such as battery power resources. Energy is playing as consequential undertakings in MANET. Limited power of network causes many effects on the performance of the networks. Lack of energy factor may break the connection which can mess the network or routing process. Routing process requires efficient utilization of battery power or energy to maintain the network condition so that packet can be transferred without any obstacle in the performance. As well as, network life or life of node is proportional to battery life which is powered by limited capacity. The meaning of energy-efficient is not about consuming less energy but to increase the time duration to maintain the network performance level. Routing performances can differ depending upon the network parameters. In order to reduce the usage of energy and to increase the life span of battery, several others Ad hoc routing protocols are reviewed with their novel conceptions and optimization techniques over the main routing protocols.
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