How the Node Mobility Impacts the Multi-hop Transmission Performance of On-demand Routing Protocols in Ad hoc Networks

摘要

To explore how the mobility of the nodes in different ad hoc network scenarios impacts the multi-hop transmission performance of some prominent on-demand pouting protocols like DSR or AODV, a static model and a mobile model for simulating different scenarios of ad hoc networks are proposed. Different criteria for assessing the multi-hop transmission performance of the protocols are also designed and evaluated in a simulation platform based on programming in NS-2. The simulation result shows that in a static ad hoc network AODV has better route discovery performance and consumes less energy for multi-hop data transmission than DSR. In a mobile ad hoc network when the nodes moves slow or when the nodes moves fast within a small network area, AODV and DSR both support a good performance of multi-hop data transmission in terms of the end to end delay, the packet delivery rate, and the energy consumption. However, when the network area becomes larger, the multi-hop transmission performance of AODV and DSR degrades greatly with the increase of the node mobility. The simulation also proves that AODV has a better data transmission performance and is more fit for the scenario with a high node mobility than DSR.