Abstract
In this article, an emergency message reception power quantization–based time-slot broadcast scheme is proposed for vehicle-to-vehicle multihop communications. The power quantization–based time-slot broadcast scheme derives the optimal reception power quantization size such that time-slot assignments can be made to minimize the average time delay to support quick multihop emergency message broadcasting. The mathematical and simulation performance analysis demonstrates that the proposed power quantization–based time-slot broadcast protocol can reduce the average time delay when compared to the infrastructure-less framework, binary-partition-assisted broadcast, and the trinary-partitioned black-burst-based broadcast schemes.
Highlights
Intelligent transportation system (ITS) services are becoming available through technologies based on IEEE 802.11p, IEEE 1609, wireless access in vehicular environment (WAVE), and dedicated short-range communications (DSRC) standards, with the objective to provide higher levels of vehicle accident prevention and various information services.[1,2]
In section ‘‘Performance analysis,’’ the performance of the power quantization–based time-slot broadcast (PQTB) is compared to other schemes, which is followed by section ‘‘Conclusion’’ that presents the conclusion of the article and the references
Simulation was based on the number of vehicles per unit area (l) for a transmission range of R = 300 m1 and maximum channel propagation delay dmax = 2ms, which enables the average time delay performance of infrastructure-less framework (ILF), binary-partitionassisted broadcast (BPAB), and 3P3B to be compared in an equivalent environment as in Suthaputchakun et al.[10]
Summary
Intelligent transportation system (ITS) services are becoming available through technologies based on IEEE 802.11p, IEEE 1609, wireless access in vehicular environment (WAVE), and dedicated short-range communications (DSRC) standards, with the objective to provide higher levels of vehicle accident prevention and various information services.[1,2] Safety systems used to avoid emergency situations in vehicle traffic have very strict time-critical operation requirements. In recent testing on EM vehicle-to-vehicle (V2V) relaying, in some cases, it was experienced that there was difficulty in vehicles determining their absolute and/or relative location/distance to the vehicle that sent the EM message when using global positioning satellites (GPSs) due to the margin of error and occasional loss of GPS signals. Based on this perspective, development of a V2V multihop EM broadcasting scheme that. In section ‘‘Performance analysis,’’ the performance of the PQTB is compared to other schemes, which is followed by section ‘‘Conclusion’’ that presents the conclusion of the article and the references
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