Presenting an Efficient Algorithm in Selecting the Appropriate Cluster Head for Decrease Energy Consume in Wireless Sensor Networks

One of the most important topics in Wireless Sensor Networks (WSNs) is the selection of an appropriate cluster head. The Cluster Head's (CH) responsibility is to collect data from other nodes and then transmit this data to the central station. If this node fails due to increased load or any other reason, a new CH must be selected. Since the CH plays a crucial role in this structure, it must be chosen in the most optimal way. An incorrect selection of the CH can reduce the network's lifespan. In this paper, unlike previous studies, used Gravitational Search Algorithm (GSA), for clustering and select appropriate CH. This method is based on three descriptors of energy, dispersion and centrality of nodes, and simulations indicate, where the CH only selected based on local data set, significantly increase network lifetime.

کلیدواژه ها:

Wireless Sensor Networks ، Clustering ، Cluster Head ، Lifetime ، GSA Algorithm