Performance analysis of mobility models in sparse Ad-hoc networks

One of the characteristics of ad-hoc networks is their mobility. What pattern each node moves will have a significant impact on the performance of ad-hoc networks. Through analyzing and comparing the performances of four mobility models such as RW, RPGM, FW, MH in sparse ad-hoc networks, it indicates that the impact on the performance of networks is remarkably different when the nodes move in different mobility models. In order to realize the effective communication between the fixed node and move nodes in sparse ad-hoc networks in a large area, we propose a chain mobility model. In this model, the mobile nodes move as a chain, and the stopped node serves as a relay node in communication. The NS2 simulation results show that this model is suitable for communication in the sparse ad-hoc circumstance.