An efficient cluster update model in MANET

In hierarchical networks, the efficient choices of cluster-head as well as the cluster update interval is important to keep the established cluster structure stable and improve the communication quality. In this paper, we establish a cluster update interval model and use this model to determine a reliable update interval for the cluster structures in MANETs. This update interval is affected by two main factors: nodes´ relative mobility and transmission range. We establish a cluster update interval model which uses the expected link lifetime with respect to the cluster-head (CH) as the update interval. The proposed model takes all of the above mentioned factors into consideration and no weights combination is needed. Simulation results shows that our proposed model can help to determine a dynamic cluster update interval adapting to various scenarios and achieve better stability in the cluster structure.