A wireless sensor network (WSN) consists of spatially disributed autonomous sensors that cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion, or pollutants, at different locations. Although the recent advances are intended to maximize node coverage, minimize coverage overlap and gap, and deploy nodes uniformly, they do not maintain the longer survival time of the network at the same time. In summary, this algorithm can deploy sensors to cover the maximum working area with the longest survival time of the network. Optimized selection of dynamic cluster heads using RNA (Redundant Node Active) algorithm is put forward in order to solve the problem of unreasonable cluster head selection. The algorithm overcomes disproportion of the energy consumption, improves the lifetime of the wireless sensor network.

Keywords Wireless Sensor Networks, Network life time, RNA, Energy Consumption;