The main goal of wireless sensor networks (WSN) is to gather information from the regions of interest through a large number of micro sensor nodes. This gathering is traditionally done by using a client/server communication approach. However, this communication architecture consumes a lot of power and does not take into consideration the information properties. In this paper, we propose a data gathering scheme for WSNs, based on agents cooperation to deal with the importance of the information. This agent cooperation aims to reduce an important amount of the information communicated over the network by eliminating the unimportant information and the inter-sensor-nodes redundancy. This cooperation is empowered by an agent strategy taking into account several parameters related to the node and to the instance of communication for an optimized power management. Successive simulations proved, in large scale WSNs and different densities, the ability of the proposed gathering scheme to reduce the average power consumption of sensor nodes and hence, to extend the network life time.
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