Wireless Personal Communications

, Volume 94, Issue 1, pp 83–98 | Cite as

Safety Communication Based Adaptive Multi-channel Assignment for VANETs

  • Soamsiri Chantaraskul
  • Komchan Chaitien
  • Anuchit Nirapai
  • Chayaphon Tanwongvarl
Article

Abstract

Dedicated short-range communication technology has been proposed for wireless access in vehicular environment (WAVE) standard. With this technology, road users can benefit from utilizing inter-vehicle and infrastructure to vehicle communication services, which are crucial for enhancing road safety and facilitating efficient transportation. WAVE standard provides different channel assignment patterns. In addition to the baseline standard IEEE 802.11p, which provides continuous access channel operation, WAVE offers the MAC extension to support multi-channel operation with the standard IEEE 1609.4. By using standard channel assignments, WAVE system suffers from decreasing service performance especially for safety applications in the scenario with high vehicle density. Moreover, fixed channel assignment may not offer best solution for different traffic situations. This paper proposes a mechanism called safety communication based adaptive multi-channel assignment, which allows flexible multi-channel usage based on real-time communication traffic condition. Several test scenarios have been implemented and the system performance has been observed via simulations. The results show that our proposed method can optimize and maintain good system performance in all test cases, while other channel assignment mechanisms can only offer good performance for certain traffic conditions.

Keywords

Vehicular safety communication Multi-channel assignment Channel congestion System performance evaluation 

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Soamsiri Chantaraskul
    • 1
  • Komchan Chaitien
    • 1
  • Anuchit Nirapai
    • 1
  • Chayaphon Tanwongvarl
    • 1
  1. 1.The Sirindhorn International Thai-German Graduate School of Engineering (TGGS)King Mongkuts University of Technology North BangkokBangkokThailand

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