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An Inter-Vehicle Emergency Message Propagation Method with Vehicle Equivalent Group  

Yu, Suk-Dea (전북대학교 컴퓨터통계정보학과)
Cho, Gi-Hwan (전북대학교 전자정보공학부)
Publication Information
Journal of KIISE:Information Networking / v.34, no.5, 2007 , pp. 340-347 More about this Journal
Abstract
Vehicle safety service can be effectively achieved with inter-vehicle communication technologies, in which moving vehicles transmit a safety related urgency information such as traffic accidents, sudden stops, obstacle appearance etc. They usually utilize a broadcast of message propagation method because the communicating vehicles are not known each other. The pure broadcasting scheme does not satisfy the requirements of vehicle safety communication service due to the transmission delay with frequent message collisions. To resolve this problem, this paper presents a group based propagation method for the multi-hop transmission, in order to deliver an urgency message to the reasonable size of vehicle troop. A group header is elected in considering of the position information of vehicles and radio transmission range. And a vehicle equivalent group is formed with the header. With benefits of the group based transmission, it is possible to minimize the unnecessary transmission and the possibility of message collisions. Simulation results show that the message propagation performance is so stable regardless of vehicle's congestion degree.
Keywords
Vehicle Safety Communication; Vehicle Equivalent Group; Broadcast; Selective Forwarding; Emergency Message;
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