• S.Nanthini
• Dr.S.Nithya kalyani
• Dr.S.Sudhakar

Abstract— The major drawback of any sensor node in WSN, if limited resource constraints. It is very essential to manage the limited energy supply of battery present in the sensor node. A sensor node is smaller in size and has sensing, processing, and computing capabilities. All these operations consume a reasonable amount of energy. Each sensor node is energy and resource constrained node. Since the batteries enabled in sensors are not changeable, losing the energy is slowly make the sensor node to fail. The network lifetime depends on the resources used in WSNs. Energy optimization mechanisms are used to enhance the network lifetime.

Keywords: Sensor Node, limited energy supply, Smaller Size, Network Lifetime, Energy Optimization mechanisms

"Energy Efficient Techniques of WSN : A Review", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.834-837, June-2019, Available :http://www.jetir.org/papers/JETIR1906125.pdf

"Energy Efficient Techniques of WSN : A Review", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp834-837, June-2019, Available at : http://www.jetir.org/papers/JETIR1906125.pdf