Developing Multi-Directional Broadcasting for Both Highway and Urban Vehicular Sensor Networks
AUTHORS
Minwoo Ryu,Korea Telecom R&D Center, KT, Seoul, 06763, South Korea
Si-Ho Cha,Dept. of Multimedia Science, Chungwoon University, 113, Seokgol-ro, Michuhol-gu, Incheon 22100, South Korea (Corresponding Author)
ABSTRACT
Vehicular Sensor Network (VSN) has to ensure the prompt dissemination of critical sensing data to all vehicles within Region of Interest (ROI) to avoid various road dangers. In order for VSN to provide safe road services on both highways and urban roads, it must have broadcasting protocols that can efficiently deliver hazardous messages to all nearby vehicles. This paper proposes a mobility prediction based multi-directional broadcasting (MPMB) protocol for both highway and urban VSNs. The MPMB protocol consists of (i) mobility prediction phase and (ii) broadcasting phase. In the mobility prediction phase, each vehicle predicts the Link Available Time (LAT) of its all neighbor vehicles through periodical beaconing. In the broadcasting phase, each broadcasting vehicle adaptively selects a vehicle with the largest LAT value predicted in the previous mobility prediction phase as a rebroadcasting vehicle each possible directional sector.
KEYWORDS
Broadcasting, Vehicular Sensor Networks, Mobility Prediction, Link Available Time, Region of Interest
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