Prolonging life time of wireless sensor network

In this paper, in order to increase wireless sensor network life time, protocol with dynamic clustering is suggested. Because this network have got limited energy, therefore the energy issue is very important. The new protocol is proposed in two phases, cluster setup and steady state. This phase consist of creating cluster, dynamic distribution of cluster head, using dynamic tree structure and turning nodes on and off criterion phases which have the purpose of prolonging wireless sensor network life time. In conclusion, results gained by the use of simulating with MATLAB software shows that suggested protocol increases the life time of wireless network 15 percent compared to the old protocols.