Maximization the lifetime of wireless sensor networks

The technological developments in microelectronics have enabled the integration of capacity for realization of several important tasks for monitoring the environment in very small sensor named components with low cost and low power consumption. A sensor node detects environmental phenomenon to obtain data and transmits them to the sink via a single hop or multi-hop path in wireless sensor network applications. For monitoring applications, a topology of tree or forest is often used to collect data of global detection. The tree or forest is built after the initial deploying of nodes and rebuilt on important topology changes. As the sensor node has limited energy, how to build a good tree to prolong the lifetime of the network is an important problem. In this paper we propose an approach for optimizing the lifetime of sensors network. First, we divide our network into disjoints sets, where each one represents a tree (tree's construction), than we optimize the lifetime of network by using an efficient algorithm for balancing weight between trees in the network.