Adaptive congestion control of DSRC vehicle networks for collaborative road safety applications

Wenyang Guan, Jianhua He, Lin Bai, Zuoyin Tang

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    22 Citations (Scopus)


    Congestion control is critical for the provisioning of quality of services (QoS) over dedicated short range communications (DSRC) vehicle networks for road safety applications. In this paper we propose a congestion control method for DSRC vehicle networks at road intersection, with the aims of providing high availability and low latency channels for high priority emergency safety applications while maximizing channel utilization for low priority routine safety applications. In this method a offline simulation based approach is used to find out the best possible configurations of message rate and MAC layer backoff exponent (BE) for a given number of vehicles equipped with DSRC radios. The identified best configurations are then used online by an roadside access point (AP) for system operation. Simulation results demonstrated that this adaptive method significantly outperforms the fixed control method under varying number of vehicles. The impact of estimation error on the number of vehicles in the network on system level performance is also investigated.

    Original languageEnglish
    Title of host publicationProceedings of the 36th Annual IEEE Conference on Local Computer Networks, LCN 2011
    Number of pages5
    ISBN (Print)9781612849287
    Publication statusPublished - 2011
    Event36th Annual IEEE Conference on Local Computer Networks, LCN 2011 - Bonn, Germany
    Duration: 4 Oct 20117 Oct 2011

    Publication series

    NameProceedings - Conference on Local Computer Networks, LCN


    Conference36th Annual IEEE Conference on Local Computer Networks, LCN 2011


    • Vehicles
    • safety
    • Roads
    • Quality of service
    • Delay
    • Estimation
    • Wireless communication

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Hardware and Architecture

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