Improving Multi-path Routing Using Received Signal Strength and Residual Energy in MANET

Abstract

Mobile Ad-hoc Networks (MANETs) are characterized by autonomous, self-organized and dynamic wireless networks with no fixed infrastructure. Nodes are distributed in decen tralized and random way in MANET. MANETs are greatly applicable in different areas like remote area, for military battlefield, and in disaster relief, where infrastructure-based net work is difficult to deploy. MANET provides many advantages, however it fails to provide longer connectivity due to different factors: such as Nodes in MANET are free to move anywhere in the topology which causes link failure. In addition to node mobility, nodes are equipped with limited battery power and the battery will die because of transmitting, receiv ing data packets and listening the transmission channel. Link failure and the availability of low energy causes performance degradation in MANET. Frequent disconnection in the network causes packets to be dropped, decreases packet delivery ratio and throughput. In or der to maximize network performance, we have modified AOMDV route selection algorithm to select the best path using received signal strength and energy parameter. This metrics improves the network performance by minimizing packet loss rate, enhancing packet deliv ery ratio and throughput. During route selection, source node selects the best route from the available multiple paths if it has enough signal strength and energy for transmitting and receiving data packet. Ns2.35 network simulator is used to evaluate the network per formance. The simulation outcome demonstrates that the proposed solution can effectively improves the network performance such as packet delivery ratio, packet loss ratio and net work throughput compared with AOMDV.