Research on Cluster Routing Protocol based on Optimized Cluster Head Election Strategy

This paper proposes a weighted threshold calculation method based on the cluster routing protocol LEACH to improve the randomness of the cluster head election, which causes the node to die too quickly. There are two factors included in this method, namely: the current energy of the node and its distance to the base station. With the threshold calculation method proposed in this paper, the probability that the node closer to the base station with more residual energy which elected as the cluster head is increased. At the same time, base stations are introduced to act as cluster heads. Ordinary nodes near the base station can send data directly to the base station, shortening the transmission path and reducing network energy consumption, thus achieving the goal of energy balancing. The results of the simulation experiments show that the improved protocol outperforms the original one ,mainly in terms of network lifetime and the time of appearance of the first dead node.