ERA-AODV for MANETs to Improve Reliability in Energy Efficient Way

Abstract

The nodes in Mobile Ad hoc Networks (MANETs) communicate with each other through wireless medium and are constantly moving. To maintain the links in a continuously changing topology is a challenge especially for longer duration of time and in such scenarios the reliability of the links becomes the prime issue. Further, the reliability must be maintained in an energy efficient way as the MANETs have energy constraints. The existing routing protocols provide the shortest path from source to destination node in terms of hop count. These do not consider the energy efficient routes neither they consider the quality of the links while deciding the route between source and destination node. The thesis presents energy efficient version of RA-AODV named as ERA-AODV which measures reliability in terms of end to end delay, bandwidth and mobility of the intermediate nodes. Since the prime factor which determines the consumption of energy of the node is the distance of communication between them, the proposed scheme takes into account adjustment of the transmission range of the mobile nodes according to residual energy; to provide improved energy efficiency. The second approach used in ERA-AODV is the use of location aided routing which reduces the number of nodes transmitting the route request packet in route discovery phase thus reducing the energy consumption. The parameters considered for performance measure include packet delivery ratio, throughput, End to End delay and remaining energy .All these parameters showed an improvement over the existing scheme.