摘要
车载自组织网的目标是尽最大可能为道路行行驶提供安全。为达到该目的,车辆间通信需要充分利用安全消息。文中将安全消息分为两类:心跳安全消息和紧急报警安全消息。引入交通流理论,探讨在Free-low阶段基于心跳安全消息的安全应用。重点分析单跳数据成功传输率和心跳消息发送频率对安全的影响,从概率的角度建立数学模型并进行分析。通过仿真得出结论:提高数据成功传输率可以提高安全水平;在不造成网络拥塞的情况下较高的心跳消息发送频率可以获得更好的安全性。
The primary goal of Vehicular Ad hoc Network is to provide life safety on the road.To achieve this,vehicles should make full use of safety messages.In this paper,the safety messages are divided into two types：Heart Heat Safety Message and Emergency Alarm Safety Message.We introduce the traffic flow theory and discuss the safety application based on the Heart Beat Safety Message in the Free-flow phase.The impact of successful data transmission rate and frequency transmission by Heart Beat Safety Message on the safety level is emphasized.We make the mathematical modeling from the point of probability theory.Simulation shows that improving the successful transmission rate can enhance the safety level and that a higher transmission frequency of safety messages also guarantees the safety without causing net congestion
出处
《电子科技》
2011年第12期102-105,共4页
Electronic Science and Technology
关键词
车载自组网
安全消息
数据成功传输率
安全水平
vehicular Ad hoc Net work
safety message
successful transmission rate
safety level
