Performance Metrics Evaluation of Routing Protocols in MANET

A major issue with ad hoc networks is energy consumption since nodes are usually mobile and battery operated. A recent trend in ad hoc network routing is the reactive on-demand philosophy where routes are established only when required. This paper proposes a new scheme called Efficient Power Routing DSR (EPRDSR) to improve existing on-demand routing protocols by introducing the power efficient algorithm in whole Mobile Ad hoc Network (MANET). The scheme establishes quick adaptation to distributed processing, dynamic linking and low processing at all times. This scheme uses the concept of power awareness among route selection nodes by checking power status of each node in the topology which insures fast selection of routes with minimal efforts and faster recovery. The results indicate that EPRDSR is able to discover the required path with lesser overheads, the network lifetime increased by around 6570%, the packet delivery ratio improved and the packet experienced a low average delay. This methodology is incorporated with the existing DSR protocol and the performance has been studied through simulation and scheme performs very well. The main goal of EPRDSR protocol is not only to extend the lifetime of each node, but also to prolong the network lifetime of each connection. This paper presents a performance comparison of power aware routing protocols such as proposed EPRDSR and Minimum Total Transmission Power Routing (MTPR) and reactive protocol is DSR based on metrics such as throughput, packet delivery ratio and average end-to-end delay by using the NS-2 simulator.