A scalable time-division-based emergency messages broadcast scheme for connected and autonomous vehicles in urban environment
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Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Inc.
Abstract
Connected and Autonomous Vehicles (CAVs) technology promises to revolutionize the transportation
sector by solving many safety and traffic efficiency challenges while significantly enhancing passengers’
and drivers’ comfort. Most of these applications are built upon multi-hop broadcast of information
among vehicles, leading to an increased contention and thus higher collision probability due to the
limited bandwidth available for vehicular communications. In this paper, we propose a novel TimeDivision-based Broadcast (TDB) scheme to mitigate interferences originating from hidden nodes (i.e.,
vehicles) to meet the stringent safety applications requirements. Then, we use this broadcast scheme
as a basis for designing a new efficient and scalable protocol for emergency messages dissemination in
urban vehicular networks (UV-TDB: an Urban, Vehicular and Time-Division-based Broadcast protocol). The
simulation experiments show that UV-TDB significantly improves the performance of multi-hop broadcast
and outperforms two state of the art protocols in terms of the achieved reduction in broadcast overhead
(up to 77.9%), packet collisions ratio (up to 93.5%), interference rate (up to 43.5%) and increase in message
reception rate (up to 337.7%). The results highlight also that UV-TDB adapts better to varying levels of
vehicle density, making it more scalable
Description
Keywords
Smart cities Intelligent transportation systems (ITS) Connected and autonomous vehicles (CAVs) Safety applications Multi-hop broadcasting Urban areas
Citation
Guesmia, S., Semchedine, F., & Djahel, S. (2022). A scalable time-division-based emergency messages broadcast scheme for connected and autonomous vehicles in urban environment. Vehicular Communications, 38, 100544.