Energy Consumption Improvement of Traditional Clustering Method in Wireless Sensor Network

摘要

In the traditional clustering routing protocol of wireless sensor network, LEACH protocol (Low EnergyAdaptive Clustering Hierarchy) is considered to have many outstanding advantages in the implementationof the hierarchy according to low energy adaptive cluster to collect and distribute the data to the basestation. The main objective of LEACH is: To prolong life time of the network, reduce the energyconsumption by each node, using the data concentration to reduce bulletins in the network. However, in thecase of large network, the distance from the nodes to the base station is very different. Therefore, theenergy consumption when becoming the host node is very different but LEACH is not based on theremaining energy to choose the host node, which is based on the number of times to become the host nodein the previous rounds. This makes the nodes far away from the base station lose power sooner.In this paper, we give a new routing protocol based on the LEACH protocol in order to improve operatingtime of sensor network by considering energy issues and distance in selecting the cluster-head (CH), at thattime the nodes with high energy and near the base station (BS) will have a greater probability of becomingthe cluster-head than the those in far and with lower energy.