LEACH Protocol and Its Improved Algorithm in Wireless Sensor Network

Given the fact that LEACH protocol didn't take the residual energy of nodes into account when choosing the cluster heads, which may result in the node with rather low energy to be chosen as a cluster head. Thus, it will cause the cluster created by this low-energy node to be dead at an early stage, which wastes the whole network's resource. Here in this paper, we introduced an energy factor when choosing a cluster head, which can avoid a node with very low-energy to be a cluster head. Meanwhile, we conducted a simulation specific to LEACH protocol and this improved algorithm in terms of network lifetime, network stability, collecting data packages and energy consumption. Simulation results show that our improved algorithm has better performance compared with LEACH protocol in these aspects.