A Water-Wave Broadcast Scheme for Emergency Messages in VANET

Authors:
Shou-Chih Lo;Jhih-Siao Gao;Chih-Cheng Tseng
Affiliations:
Department of Computer Science and Information Engineering, National Dong Hwa University, Hualien, Taiwan, ROC;Department of Computer Science and Information Engineering, National Dong Hwa University, Hualien, Taiwan, ROC;Department of Electrical Engineering, National Ilan University, Ilan, Taiwan, ROC
Venue:
Wireless Personal Communications: An International Journal
Year:
2013

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Abstract

Vehicular Ad Hoc Network (VANET) is an emerging new technology and a promising platform for the intelligent transportation system. The most important application of VANET is disseminating emergency messages to drivers in case of dangerous events. The effectiveness depends on the design of a broadcast scheme. A simple broadcast scheme encounters many problems such as broadcast storm, connection hole, building shadow, and intersection problems. In this paper, we propose an efficient broadcast scheme that simulates water wave propagation to spread emergency messages. This scheme provides warning services with both space and time constraints. Most existing broadcast schemes provide inadequate strategies for limiting the time period of a warning. We verified the performance of our proposed scheme in a simulated street environment with vehicle movements to show the superiority of this scheme in high broadcast coverage areas.