Location based clustering scheme considering node mobility in wireless sensor networks

In wireless sensor networks, one of key techniques to save power consumption is a clustering. There are several location based clustering schemes. In these methods, a network area is divided into cells, and one node is selected as a cluster head in each cell. Making all nodes except cluster heads sleep, these methods can save power consumption. However, they can be applied to the static network topology. Therefore, we propose a new location based clustering scheme. Our proposed scheme selects a cluster head on the basis of not only residual power but also estimated staying time in a cell. By computer simulations, we show the effectiveness of the proposed scheme with respect to the packet delivery ratio.