Abstract: “In a Mobile Ad hoc Network (MANET), mobile nodes move around arbitrarily, nodes may join and leave the network at any time, and the resulting topology is constantly changing. Routing in a MANET is challenging issue because of the dynamic topology and the lack of fixed infrastructure. Since each mobile node has a limited battery lifetime, energy conservation is essential to prolong network lifetime in MANET. Hence, it is required to invent a new routing algorithm which makes efficient use of battery. The main objective of our paper is to optimize energy consumption in Location Aided Routing (LAR1). LAR1 is selected for enhancement because of higher packet delivery ratio, moderate energy consumption and best suited for mobile and dense network. Proposed protocol named as Energy Aware Location Aided Routing (EALAR1) senses remaining lifetime of node during route discovery and selects the path with maximum lifetime. Node remaining lifetime is the function of residual energy and drain rate”

Keywords: MANET, Routing, LAR1, GPS.