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A Token-Based MAC Protocol for Achieving High Reliability in VANET
SICS Swedish ICT Västerås AB, Sweden.
2016 (English)In: BMW Summer School 2016 BMWSS 2016, Bad Wörishofen, Bavaria, Germany, 2016Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

Safety applications developed for vehicular environments require every vehicle to periodically broadcast its status information (beacon) to all other vehicles, thereby avoiding the risk of car accidents in the road. Due to the high requirements on timing and reliability posed by traffic safety applications, the current IEEE 802.11p standard, which uses a random access Medium Access Control (MAC) protocol, faces difficulties to support timely and reliable data dissemination in vehicular environments where no acknowledgement or RTS/CTS (Request-to-Send/Clear-to-Send) mechanisms are adopted. In this paper, we propose the Dynamic Token-Based MAC (DTB-MAC) protocol. It implements a token passing approach on top of a random access MAC protocol to prevent channel contention as much as possible, thereby improving the reliability of safety message transmissions. Our proposed protocol selects one of the neighbouring nodes as the next transmitter; this selection accounts for the need to avoid beacon lifetime expiration. Therefore, it automatically offers retransmission opportunities to allow vehicles to successfully transmit their beacons before the next beacon is generated whenever time and bandwidth are available. Based on simulation experiments, we show that the DTB-MAC protocol can achieve better performance than IEEE 802.11p in terms of channel utilization and beacon delivery ratio for urban scenarios.

Place, publisher, year, edition, pages
Bad Wörishofen, Bavaria, Germany, 2016.
National Category
Engineering and Technology Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-37427OAI: oai:DiVA.org:mdh-37427DiVA, id: diva2:1168264
Conference
BMW Summer School 2016 BMWSS 2016, 11 Jul 2016, Bad Wörishofen, Bavaria, Germany
Projects
SafeCOP - Safe Cooperating Cyber-Physical Systems using Wireless CommunicationAvailable from: 2017-12-20 Created: 2017-12-20 Last updated: 2018-01-26Bibliographically approved

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Balador, Ali
Engineering and TechnologyElectrical Engineering, Electronic Engineering, Information Engineering

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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  • asciidoc
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