期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2014
卷号：67
期号：1
出版社：Journal of Theoretical and Applied
摘要：The purpose of this research work is to improve the performance of Vehicular Ad-hoc Networks (VANET) by reducing the number of in-network message transactions, and there by efficiently utilizing the bandwidth during an emergency situation. Bandwidth Efficient Acknowledgement based Multicasting protocol (BEAM) is proposed instead of the existing broadcasting protocol such as Acknowledged Broadcast from Static to highly Mobile (ABSM) an adaptive broadcast protocol. In BEAM, the emergency situations are predicted based on the status report send by the vehicles to the nearby Road Side Units (RSU). RSU (ie source) creates a multicast group, and sends an emergency message to all group members. The members reply with acknowledgements. Unlike ABSM protocol, with BEAM the vehicles decide whether to receive a message or not. The BEAM does not disturb all vehicles in the network and it helps conserve the bandwidth by exchanging minimum number of messages to multiple recipients simultaneously. Performance of BEAM is evaluated based on the number of in-network message transactions, involved in sub-urban scenario of VANET. BEAM reduces at most 13% of the in-network message transactions when compared to the existing broadcasting protocol.
