DPMM: A novel mobility model for delay tolerant networks

Abstract

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The mobility model is one of the most important factors in the performance evaluations of a mobile ad hoc network (MANET). The Manhattan mobility model has been used to model the node's mobility, where the movement pattern of mobile node on streets and roads defined by maps. However, DakNet ad hoc network that uses wireless technology to provide digital connectivity among villages, kiosks and private communication devices and between kiosks and a hub (for non-real time internet access) using low-cost WiFi radio transceivers. One typical mobility behavior is geographical restriction movement. To investigate DakNet scenario an underlying realistic mobility model is desired. In this paper, we propose a novel mobility model “Digital Postal Mobility Model” (DPMM), which closely approximates the mobility patterns in DakNet scenario; it models the movement of nodes at pre-defined path and have a set of destinations and also visit all destination. We demonstrate our proposed mobility model by evaluating various MANET routing protocols, including DSR and DSDV, the performance of DPMM is efficient than existing geographical restricted models and NS simulation results shows that the choice of mobility model has significant impact on network performance.