AN EFFICIENT POWER CONTROLLED ROUTING IN MANETs

Wireless Ad hoc Networks

A MANET is an autonomous collection of mobile users that communicate over relatively bandwidth constrained wireless links. Since the nodes are mobile, the network topology may change rapidly and unpredictably over time. The network is decentralized, where all network activity including discovering the topology and delivering messages must be executed with the nodes themselves, i.e., routing functionality will be incorporated into mobile nodes. An ad hoc network [1] is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. This work is incorporated with three different protocols namely PC-AODV (Power Controlled Ad hoc on-demand Distance Vector protocol. Applying power control into routing protocols in wireless ad hoc networks has become a hot research issue, because rational use of power control in routing protocols can not only reduce network energy consumption but also improve network throughput, packet delivery ratio and other performances of ad hoc networks. So this work proposes an on-demand routing algorithm based on cross-layer power control termed as PC-AODV. This algorithm builds different routing entries according to the node power levels on demand, and selects the minimum power level routing for data delivery. In addition, PC-AODV uses different power control policies to transmit data packets, as well as control packets of network layer and MAC layer.

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