基于信道拥塞代价计算的车联网自适应消息发送速率控制方法

刘明剑; 谭国真; 李帅兵; 丁男; 宋彩霞

doi:10.11959/j.issn.1000-436x.2016202

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基于信道拥塞代价计算的车联网自适应消息发送速率控制方法

学术论文 | 更新时间：2024-06-05

- 基于信道拥塞代价计算的车联网自适应消息发送速率控制方法
- Adaptive message sending rate control method based on channel congestion cost calculation in VANET
- 通信学报 2016年37卷第10期页码：108-116
- 作者机构：
  
  1. 大连理工大学计算机与科学技术学院，辽宁大连 116024
  2. 青岛农业大学理学与信息科学学院，山东青岛 266109
- 作者简介：
  
  [ "刘明剑（1984-），男，辽宁大连人，大连理工大学博士生，主要研究方向为车联网环境下车辆安全预警技术与车联网消息调度器。" ]
  [ "谭国真（1960-），男，辽宁大连人，博士，大连理工大学教授、博士生导师，主要研究方向为智能交通和车联网等。" ]
  [ "李帅兵（1991-），男，河南郑州人，大连理工大学硕士生，主要研究方向为车联网通信自适应功率控制。" ]
  [ "丁男（1978-），男，辽宁沈阳人，博士，大连理工大学副教授，主要研究方向为传感网络。" ]
  [ "宋彩霞（1977-），女，山东即墨人，大连理工大学博士生，主要研究方向为车联网安全通信协议、信道资源分配、拥塞控制。" ]
- 基金信息：
  
  国家高科技基金资助项目(2012AA111902);国家自然科学基金资助项目(61471084)
- DOI：10.11959/j.issn.1000-436x.2016202
  中图分类号： TP393
- 网络出版日期：2016-10，
  
  纸质出版日期：2016-10-25
- 稿件说明：
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刘明剑, 谭国真, 李帅兵, 等. 基于信道拥塞代价计算的车联网自适应消息发送速率控制方法[J]. 通信学报, 2016,37(10):108-116.

Ming-jian LIU, Guo-zhen TAN, Shuai-bing LI, et al. Adaptive message sending rate control method based on channel congestion cost calculation in VANET[J]. Journal on communications, 2016, 37(10): 108-116.
刘明剑, 谭国真, 李帅兵, 等. 基于信道拥塞代价计算的车联网自适应消息发送速率控制方法[J]. 通信学报, 2016,37(10):108-116. DOI： 10.11959/j.issn.1000-436x.2016202.

Ming-jian LIU, Guo-zhen TAN, Shuai-bing LI, et al. Adaptive message sending rate control method based on channel congestion cost calculation in VANET[J]. Journal on communications, 2016, 37(10): 108-116. DOI： 10.11959/j.issn.1000-436x.2016202.

摘要

在VANET中，车流量密度的变化以及Beacon消息的发送对信道负载具有直接影响，车流量达到一定程度时会造成信道拥塞，导致协作式安全应用失效。针对该问题，设计了一个基于信道拥塞检测的自适应消息发送速率控制方法。首先，建立一个能精确反映当前信道状态的干扰模型；其次，根据香农信息理论和网络效用最大化理论计算出当前节点在物理层的最优发送速率；最后通过对消息队列的实时监控，根据传输速率的不匹配和传输队列长度的不匹配建立下一时刻信道拥塞程度的代价函数，来自适应调整下一时刻的消息产生率，避免信道拥塞和队列溢出。通过仿真实验表明，该方案以较低的计算时间开销，有效减少通信传输延时，避免信道拥塞，保证数据的可靠发送。

Abstract

In VANET

sending beacon messages reliably played a vital role in cooperative awareness and collision avoidance

and changes of vehicle density in real traffic environment had a direct impact on channel load and will cause the channel congestion to a certain degree

thus causing inefficiency of cooperative security applications.Aiming at this issue

a adaptive method based on channel congestion detection to control message sending rate was designed.First of all

an interference model that can accurately reflect the current state of the channel was established.Secondly

according to the Shannon information theory and network utility maximization theory

the optimal transmission speed of the current node in the physical layer was calculated.Finally

according to the mismatch of transmission rate and transmission queue length

the next moment's cost function of the channel congestion degree by monitoring the message queue was established to avoid channel congestion and queue overflow.The simulation experiment shows that the scheme effectively reduces communication transmission delay and avoids channel congestion

ensuring that the data be sent reliably.

关键词

Keywords

references

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