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Research Article Open Access
A wireless sensor network is type of wireless network. Basically it consist a collection of tiny device are called sensor node, sensor node has a resource constraint means battery power, storage and communication capability. Network lifetime is the most important metric for the evaluation of sensor networks. In a resource-constrained environment, the utilization of every limited resource must be considered. The network can only fulfil its purpose as long as it is considered alive, but not after that. It is therefore an indicator for the maximum utility a sensor network can provide. Energy efficiency is therefore of paramount importance in sensor networks that are constrained by limited resources. In this paper we purposed a novel technique in which we added the no of relay nodes in the network to increase the network lifetime.