Performance analysis of modified OLSR protocol for MANET using ESPR algorithm

Mobile Ad-hoc Network (MANET) is an emerging area of research in the communication network world. MANET is a group of wireless mobile nodes dynamically establishing a short live network without any use of network infrastructure or centralized administration. In this paper we proposed new routing algorithm named Energy Saver Path Routing using Optimized Link State Routing (ESPR-OLSR) protocol because routing in MANET is serious issue because network topology which is changeable due to nodes mobility. Routing algorithm uses specific metrics to determine the optimum path between senders and receivers such as shortest minimum cost and minimum total power transmission etc. Many routing protocols have been proposed in last few years. Especially energy efficient routing is most important because all the nodes are limited battery power. Failure of one node may affect the entire networks. If a node runs out of energy the probability of network partitioning will be increased. Since every mobile node has limited power is become one of the main threats to the lifetime of the MANET. So routing in MANET should be in such a way that it will use the remaining battery power in an efficient way to increase the life time of the node / network. This ESPR algorithm executes based on the edge node selection mechanism because choose the shortest path from source to destination with low transmission power for transfer the packet and improved Packet Delivery Ratio (PDR) and reduced End-to-End delay than ordinary OLSR.