A New Approach for Power Aware Routing for Mobile Adhoc Network

wireless adhoc networks are potential area of research in telecommunication over infrastructure less networks wherein most of devices are power operated.Infact power is an important but scare resource in mobile environment necessitating a design of a protocol that not only saves the battery life but also maximizes the life time of participating node in a network. In this paper we propose a new protocol called Best Gateway Routing Protocol (BGRP) for MANET whose objective is to maximize the power saving and lifetime of a node. The proposed routing algorithm (BGRP) selects best gateway node and sends the data packet to that node where we have the maximum probability reach to the destination whereas the existing protocols send data packet to entire ad-hoc network. Mobile adhoc networks are multi hop wireless networks that result from the cooperative engagement of a collection of mobile hosts without any centralized access point and infrastructure. The various nodes can directly communicate only when participating nodes are located within each other's radio range. If the destination node is outside the radio range of the sender node, then the message is sent through a hop node between the two. In fact, the hop node is a mobile node that falls into the overlapping zone of both the sender and destination nodes. It may be noted that due to the limited transmission range of wireless network interfaces, multiple network hop may be needed for one node to exchange data with another across the network. The mobile nodes in the MANET dynamically establish routes among themselves to form their own network in an adhoc fashion so that the users can move anywhere and at anytime. Consequently, such networks have dynamically, sometimes rapidly changing, random, multi hop topologies which are composed of relatively bandwidth-constrained wireless links, limited battery power etc. Therefore, the objective of mobile ad hoc networking is to support robust and efficient operation in mobile wireless networks by incorporating routing functionality into the mobile nodes.