Impact of user mobility on the broadcast service efficiency of the ADHOC MAC protocol

Wireless communication among vehicles is one of the hottest applications of ad hoc networking. The design and development of effective inter vehicles communication systems are key points to increase driver´s safety through effective services like traffic monitoring and assistance, alarms signalling, etc. The ADHOC MAC for inter vehicle communications is a protocol recently developed within the CarTALK2000 project funded by the European Commission. In this paper we analyze its behavior and performance in scenarios where the user mobility is considered. Although the speed of the terminals poses stringent requirements on the network reconfiguration ability, the results obtained prove that the ADHOC MAC maintains good performances even considering terminal mobility.