TR2010-101

Safety Message Transmission in Vehicular Communication Networks


Abstract:

Emerging vehicular safety applications require low latency communications and reliable packet dissemination for life saving safety messages. Significant developments have taken place over the past few years. IEEE WAVE and ISO CALM have been developed as international standards for ITS applications. Both WAVE and CALM support multichannel operations and use CSMA/CA as channel access mechanism. WAVE may impose a latency of 54 milliseconds for enabling multi-channel operations. CSMA/CA method can experience unpredictable delay and packet drop when channel is congested. In this paper, we propose an innovative technique to increase channel coverage and reduce latency for safety messages in multi-channel vehicular environments. We also propose an efficient congestion control protocol for vehicular communication networks that use CSMA/CA channel access mechanism. The proposed congestion control protocol guarantees that safety messages gain channel access while contending with other messages. Technologies presented in this paper improve reliability of the safety message dissemination and reduce latency for safety message transmission.

 

  • Related News & Events

    •  AWARD   ITS 2010 Outstanding Paper Award
      Date: October 29, 2010
      Awarded to: Jianlin Guo and Jinyun Zhang
      Awarded for: "Safety Message Transmission in Vehicular Communication Networks"
      Awarded by: ITS World Congress (ITS)
      MERL Contact: Jianlin Guo
      Research Area: Communications
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    •  NEWS   ITS 2010: 4 publications by Philip V. Orlik, Jinyun Zhang and Jianlin Guo
      Date: October 25, 2010
      Where: World Congress and Exhibition on Intelligent Transport Systems and Services (ITS)
      MERL Contacts: Jinyun Zhang; Philip V. Orlik; Jianlin Guo
      Brief
      • The papers "Location Aware Fast Handover Between WiMax and WiFi Networks" by Guo, J., Tsuboi, T. and Zhang, J., "Effect of Transmission Parameters on Efficiency and Reliability of V2V Networks" by Yim, R., Ye, F., Roy, S. and Orlik, P., "Safety Message Transmission in Vehicular Communication Networks" by Guo, J. and Zhang, J. and "Digital Lane Marking for Geo-Information Dissemination" by Yim, R., Saito, M. and Zhang, J. were presented at the World Congress and Exhibition on Intelligent Transport Systems and Services (ITS).
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