• Snober Shahzadi
• Ms.Sapna Aggarwal

Wireless Sensor Network (WSN) comprise of independent sensors to check environmental or physical conditions and cooperate with each other using various techniques in the network to send data to main location called as sink. The sensor nodes in a WSN are restricted when talk is about resources like energy, computational speed, memory etc. The in-network processing in WSN like data aggregation, information fusion, computation and transmission activities require the sensors to use their energy efficiently in order to extend their effective network life time. This paper is an attempt to study the WSN under energy constraints by showing the extensions of LEACH protocol taking heterogeneous WSN. This goal will be achieved by studying the topology and using the residual energy of the sensor nodes for election mechanism.

WSN, LEACH, Energy Efficient, Sensors

"A CONCISE STUDY OF WIRELESS SENSOR NETWORKS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.509-513, November-2019, Available :http://www.jetir.org/papers/JETIR1907U98.pdf

"A CONCISE STUDY OF WIRELESS SENSOR NETWORKS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp509-513, November-2019, Available at : http://www.jetir.org/papers/JETIR1907U98.pdf