Acta Metallurgica Sinica(English letters) ›› 2014, Vol. 21 ›› Issue (1): 26-35.doi: 10.1016/S1005-8885(14)60265-X

• Wireless • 上一篇    下一篇

Delay-aware reliable broadcast scheme based on power control for VANETs

郭伟杰1,2,黄刘生1,2,孙权1,2,徐宏力1,2,张浩然1,2   

  1. 1. School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China 2. Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou 215123, China
  • 收稿日期:2013-08-08 修回日期:2013-10-21 出版日期:2014-02-28 发布日期:2014-02-28
  • 通讯作者: 郭伟杰 E-mail:ustcer86@mail.ustc.edu.cn
  • 基金资助:

    This work was supported by the National Basic Research Program of China (2011CB302905), the National Natural Science Foundation of China (61170058), National Science and Technology Major Project (2011ZX03005-004-04, 2012ZX03005009), the Research Fund for the Doctoral Program of Higher Education of China (20103402110041, 20123402110019), the Guangdong Province and CAS Comprehensive Strategic Cooperation Projects (2012B090400013), the Fundamental Research Project of Suzhou (SYG201143).

Delay-aware reliable broadcast scheme based on power control for VANETs

  1. 1. School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China 2. Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou 215123, China
  • Received:2013-08-08 Revised:2013-10-21 Online:2014-02-28 Published:2014-02-28
  • Supported by:

    This work was supported by the National Basic Research Program of China (2011CB302905), the National Natural Science Foundation of China (61170058), National Science and Technology Major Project (2011ZX03005-004-04, 2012ZX03005009), the Research Fund for the Doctoral Program of Higher Education of China (20103402110041, 20123402110019), the Guangdong Province and CAS Comprehensive Strategic Cooperation Projects (2012B090400013), the Fundamental Research Project of Suzhou (SYG201143).

摘要:

In vehicular Ad-hoc network (VANET), many multi-hop broadcast schemes are employed to widely propagate the warning messages among vehicles and the key is to dynamically determine the optimal relay vehicle for retransmission. In order to achieve reliable and fast delivery of warning messages, this paper proposes a delay-aware and reliable broadcast protocol (DR-BP) based on transmit power control technique. First, a comprehensive model is derived to evaluate the transmission in vehicle-to-vehicle communications. This model considers the wireless channel fading, transmission delay and retransmissions characters occurring in the physical layer/medium access control (PHY/MAC) layer. Then, a local optimal relay selection mechanism based on the above model is designed. In DR-BP scheme, only the vehicle selected as the optimal relays can forward warning messages and the transmit power is time-varying. Finally, extensive simulations verify the performance of DR-BP under different traffic scenarios. Simulation results show that DR-BP outperforms the traditional slotted 1-persistence (S1P) and flooding scheme in terms of packets delivery ratio and transmission delay.

关键词:

transmission range, delay-aware, reliable, power control, relay selection, VANET

Abstract:

In vehicular Ad-hoc network (VANET), many multi-hop broadcast schemes are employed to widely propagate the warning messages among vehicles and the key is to dynamically determine the optimal relay vehicle for retransmission. In order to achieve reliable and fast delivery of warning messages, this paper proposes a delay-aware and reliable broadcast protocol (DR-BP) based on transmit power control technique. First, a comprehensive model is derived to evaluate the transmission in vehicle-to-vehicle communications. This model considers the wireless channel fading, transmission delay and retransmissions characters occurring in the physical layer/medium access control (PHY/MAC) layer. Then, a local optimal relay selection mechanism based on the above model is designed. In DR-BP scheme, only the vehicle selected as the optimal relays can forward warning messages and the transmit power is time-varying. Finally, extensive simulations verify the performance of DR-BP under different traffic scenarios. Simulation results show that DR-BP outperforms the traditional slotted 1-persistence (S1P) and flooding scheme in terms of packets delivery ratio and transmission delay.

Key words:

transmission range, delay-aware, reliable, power control, relay selection, VANET