VANET Broadcast Protocol Based on Fuzzy Logic and Lightweight Retransmission Mechanism

Celimuge WU
Toshihiko KATO

IEICE TRANSACTIONS on Communications   Vol.E95-B    No.2    pp.415-425
Publication Date: 2012/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.415
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
vehicular ad hoc networks,  broadcast protocol,  fuzzy logic,  retransmission,  

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Vehicular ad hoc networks have been attracting the interest of both academic and industrial communities on account of their potential role in Intelligent Transportation Systems (ITS). However, due to vehicle movement and fading in wireless communications, providing a reliable and efficient multi-hop broadcast service in vehicular ad hoc networks is still an open research topic. In this paper, we propose FUZZBR (FUZZy BRoadcast), a fuzzy logic based multi-hop broadcast protocol for information dissemination in vehicular ad hoc networks. FUZZBR has low message overhead since it uses only a subset of neighbor nodes to relay data messages. In the relay node selection, FUZZBR jointly considers multiple metrics of inter-vehicle distance, node mobility and signal strength by employing the fuzzy logic. FUZZBR also uses a lightweight retransmission mechanism to retransmit a packet when a relay fails. We use computer simulations to evaluate the performance of FUZZBR.