TRaM: Transmission Range-based Mobility Model for Mobile Ad-hoc Networks

Abstract

The free movement of nodes in the MANET causes continuous changes in network connectivity. In order to provide various services to the node, a transmission path must be established between the nodes. This process is performed among nodes located with-in the node’s transmission range, and the path among all the nodes is established by flooding the corresponding information. The change of the node position is recognized at the moment when the routing is performed. Therefore, from the viewpoint of routing protocol, the exact trajectory of the node moving at the interval of routing is not known unless it is tracked in real time. In this paper, we design a TRaM mobility model based on routing interval and node transmission range. The proposed model improves unrealistic movements because sharp changes in velocity and direction generated in random mobility models occur with low probability. From simulation results, we confirm that the proposed scheme offers substantially better performance.