Adaptive power and rate control for QoS guarantee of DSRC based collaborative road safety applications

Wenyang Guan, Jianhua He, Lin Bai, Yi Zhou, Yue Li

Research output: Contribution to journalArticle


In this paper we propose an adaptive power and message rate control method for safety applications at road intersections. The design objectives are to firstly provide guaranteed QoS support to both high priority emergency safety applications and low priority routine safety applications and secondly maximize channel utilization. We use an offline simulation based approach to find out the best possible configurations of transmit power and message rate for given numbers of vehicles in the network with certain safety QoS requirements. The identified configurations are then used online by roadside access points (AP) adaptively according to estimated number of vehicles. Simulation results show that this adaptive method could provide required QoS support to safety applications and it significantly outperforms a fixed control method.

Original languageEnglish
Pages (from-to)8381-8386
Number of pages6
JournalInformation: An Interdisciplinary Journal in English, Japanese and Chinese
Issue number12 A
Publication statusPublished - Dec 2013



  • DSRC
  • Power Control
  • QoS
  • Rate control

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