A NEW CLUSTERING MODEL OF WIRELESS SENSOR NETWORKS USING FACILITY LOCATION THEORY

In this paper, we study mathematical formulations for clustering problems which arise ill wireless sensor networks as examined from the standpoint of facility location theory. Following facility location theory, LEACH-C, one of the principal studies oil cluster-based network organizations, formulates the clustering problem m a p-median problem. In this paper, we examine some drawbacks to the formulation put forward in LEACH-C. We then formulate the problem as ail uncapacitated facility location problem to overcome these drawbacks. Computational experiments show that compared to LEACH-C, the proposed algorithm based on our formulation call extend the total lifetime of sensor networks.