On this basis of some inadequacies analysis for a classical LEACH protocol

such as the uneven distribution of cluster nodes caused by randomly selected cluster head

the cluster head selecting without considering the residual energy of the node and the single hop communication from cluster head to sink node

this paper presents the EB-LEACH protocol which was presented based on energy balance optimization.Therefore in the improved protocol

a class of relay nodes was added into WSN

and these relay nodes shared the work of forwarding data originally belonging to the cluster head

thence reduced the energy consumption of cluster head and made the energy consumption of node more even

which extended the life time of the entire sensor network.Then NS2 simulation tool was adapted to the simulation work of the improved protocol EB-LEACH and the original protocol LEACH.Study results show that the improved protocol in life time of the network

base station receiving data and energy consumption has better performance than the original protocol.