计算机应用 ›› 2015, Vol. 35 ›› Issue (6): 1523-1526.DOI: 10.11772/j.issn.1001-9081.2015.06.1523

• 网络与通信 • 上一篇    下一篇

车联网中基于功率控制的传输可靠性算法

胡荣娜, 郭爱煌   

  1. 同济大学 电子与信息工程学院, 上海 201804
  • 收稿日期:2014-12-23 修回日期:2015-03-23 出版日期:2015-06-10 发布日期:2015-06-12
  • 通讯作者: 胡荣娜(1990-),女,安徽安庆人,硕士研究生,主要研究方向:D2D低时延高可靠通信传输;xhurongna@126.com
  • 作者简介:郭爱煌(1964-),男,江西宜春人,教授,博士,CCF会员,主要研究方向:宽带无线通信、宽带光纤通信、电磁场与微波。
  • 基金资助:

    国家自然科学基金资助项目(61331009)。

Transmission reliability algorithm based on power control in Internet of vehicles

HU Rongna, GUO Aihuang   

  1. College of Electronics and Information Engineering, Tongji University, Shanghai 201804, China
  • Received:2014-12-23 Revised:2015-03-23 Online:2015-06-10 Published:2015-06-12

摘要:

针对车联网中车车通信间的传输可靠性差的问题,提出了一种最小最大功率控制传输可靠性评估(MMPETR)算法。首先,研究了移动车辆的发射功率控制技术对数据传输可靠性的影响,即增加发射端功率可提高消息传输成功率。其次,对现有的传输可靠性评估(ETR)算法进行改进,全面考虑了车车通信中发送端车辆成功分发告警消息所需的发射功率与该车辆本身的最小发射功率和最大发射功率之间的大小关系。最后,通过仿真给出发送端车辆的最小发射功率和最大发射功率的合理数值。仿真结果表明,MMPETR算法的传输成功概率比ETR算法增加了约4%,提高了传输可靠性。

关键词: 车联网, 车车通信, 传输可靠性, 功率控制, 传输成功率

Abstract:

In order to solve the low transmission reliability of the Vehicle to Vehicle (V2V) communication in the Internet of Vehicles (IoV), a Minimum Maximum Power-control Evaluation of Transmission Reliability (MMPETR) algorithm was proposed. Firstly, the effect on data transmission reliability of transmitted power control technology in mobile vehicles was studied and it was concluded that successful message transmission probability increased by improving transmitted power.Secondly, current Evaluation of Transmission Reliability (ETR) algorithm was improved by fully considering all the relationships between transmitted power for successfully sending warning message of the send vehicle and the minimum and maximum power of the vehicle itself. Finally, the appropriate numerical values of minimum transmitted power and maximum transmitted power of the send vehicle were given via simulation. The simulation results show that successful transmission probability of MMPETR algorithm is 4% higher than that of ETR algorithm, the MMPETR algorithm can effectively improve transmission reliability of the IoV system.

Key words: Internet of Vehicles (IoV), Vehicle-to-Vehicle (V2V) communication, transmission reliability, power control, successful transmission probability

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