D-EPAR: Distance-efficient power aware routing protocol for MANETs

A Mobile ad-hoc network comprises mobile nodes that communicate with one other without any aid from a fixed infrastructure. Every hub itself goes about as a switch for transferring and getting packets to/from different terminals. The nodes in the network are mobile in nature and are driven by battery. If a node moves out of the radio range of the other node there are probable chances of link breakage. In the work done, a modified form of EPAR (Efficient Power Aware Routing protocol), i.e. distance efficient power aware routing protocol (D-EPAR) is used. The broadcasting process has been modified to decrease the energy consumption in the network. As energy and distance efficient path is another challenging issue to be considered, D-EPAR proposes to select energy efficient path whose distance is least from the destination. Results obtained show that the performance of D-EPAR is better and energy consumption has showed lesser values. This is primarily attributed to the modified route discovery phase where lesser number of nodes is involved in forwarding the RREQ messages. So in this manner, energy consumed by the nodes also decreases thus increasing lifetime of the network. Another network performance parameter, throughput, also increases in D-EPAR as compared to existing EPAR scheme. Thus on comparing the results of simulation it is deduced that by using D-EPAR there is an overall improvement in performance parameters of the network.