<FONT face=Verdana>With limited resources

wireless sensor networks usually use clustering aggregation to decrease traffic.This paper proposes a dynamic clustering algorithm based <FONT face=Verdana>on aggregation gains.Firstly

we present a nonlinear integer programming model for the overall energy consumption of the network optimization problem

and then propose a low complex and near optimal heuristic cluster head election algorithm.A dynamic clustering algorithm is proposed based on aggregation gains

which can<FONT face=Verdana> elect the cluster head in a distributed way.Theoretical analysis and experimental results show that the proposed dynamic clustering algorithm can resolve the load balance problem

improve the network energy efficiency

and prolong the network lifetime.