A Simulation Study of Distance-Based Packet Relay for Inter-Vehicle Communications

摘要

Abstract Collision Warning Systems (CWS) can help reduce the probability and severity of car accidents by providing some sort of appropriate warning to the driver through Inter-Vehicle Communication (IVC). Especially, the CWS can help avoid collision at intersections where traffic accidents are frequent. A vehicle equipped with the CWS periodically broadcasts its information, and the CWS on other vehicles use the received information to alert drivers, helping them become aware of the existence of other vehicles. To avoid collision, the CWS has concrete objectives of IVC, i.e., the CWS should receive useful information accurately and in time. To realize CWS, relay control protocols for the IVC have been proposed to provide indirect communications through packet relaying by other vehicles. This paper studies distance-based packet relay ([7]) through realistic simulated networks. To carry out realistic experiments, we follow the simulation methodology and use performance metrics introduced in [10]. The simulation studies show that the distance-based packet relay protocol achieves higher reception rate and shorter delay; therefore it is a good candidate of IVC protocol for CWS.