典型车联网基本安全消息机制分析

车联网基本安全消息的生成和传播是影响车联网安全应用及智能网联汽车有效性、可靠性的关键因素。在分析车联网基本安全消息基本定义的基础上,对国内外当前LTE-V2X、车载环境下的无线接入(Wireless Access in the Vehicular Environment,WAVE)等多种典型的车联网通信协议体系结构框架和现行标准体系进行分析阐述。明确了不同车联网通信协议的载波频段和信道划分,基于不同车联网标准协议给出了车联网基本安全消息的标准化数据格式。围绕车联网基本安全消息机制中涉及的发送频率、发送功率参数设定,以及基于交通感知的动态车联网基本安全消息动态生成和传播机制的研究现状进行了分析。

Analysis of the Mechanism of Typical VANET Basic Safety Messages

The generation and dissemination of basic safety messages between connected vehicles is a key factor affecting the effectiveness and reliability of intelligent internet-connected vehicles. Based on the definition of basic safety messages, this paper firstly expounds several typical communication protocol architecture frameworks including LTE-V2X and WAVE and the current standard systems used in the Internet of Vehicles at home and abroad. Then the carrier frequency bands and channel divisions of different vehicle network communication protocols are defined. In addition, based on different standards and protocols of Internet of Vehicles, the standard data format for the basic safety message is given.Finally the BSM transmission parameters are discussed such as the message transmit frequency and transmission power level. The current research status of the dynamic generation and transmission mechanism of the BSM in Internet of Vehicles based on traffic perception is analyzed as well.