Development Of Prototype Product Of Vehicle Ad-Hoc Network Communication Terminal Based On WAVE Protocol Stack

In recent years,the number of vehicles in China has increased and remained at a high level,which not only brings convenience to people's life,but also brings potential problems to urban development,such as traffic congestion and frequent traffic safety accidents.People hope to make use of the advanced technology that develops rapidly nowadays to solve this problem reasonably.Therefore,the automotive electronics industry and academia have focused their research focus on the research of the field of Internet of Vehicles(Vehicular Ad-hoc Network,VANET)and the realization of Intelligent Transportation System(Intelligent Transportation System,ITS).As the wireless communication in the Internet of vehicles environment is more demanding than the traditional network communication,the wireless communication in the vehicle environment requires faster access speed of communication nodes and shorter data transmission delay.Because the traditional network communication cannot provide safe,fast and stable wireless communication service in the vehicle environment.In response,the institute of electrical and electronics engineers(IEEE)formally completed work in 2013 to develop a WAVE(Wireless Access in Vehicular Environment)protocol stack that fully meets the stringent requirements for Vehicular communications.Despite the rapid development of Internet of vehicles,there is not a mature and available system level Internet of vehicles terminal product in the market.Therefore,the research goal of this paper is to develop a prototype product of Internet of vehicles communication terminal which USES WAVE protocol stack as communication protocol,and can realize the vehicle security early warning function related to security based on BSM message.Based on the above,the work of this paper is described as follows:1.On the basis of fully understanding the communication requirements of WAVE protocol stack and Internet of vehicles terminal,the overall topology structure of Internet of vehicles system and the roadside deployment plan of RSU roadside unit were elaborated in detail,and the hardware organizational structure of OBU and RSU were reasonably analyzed and designed.In addition,the basic software architecture of this prototype product of Internet of vehicles terminal is designed.2.On the basis of analyzing and understanding the mechanism of WAVE protocol stack,?On the level of programming implementation,the realization principle of WSMP in WAVE protocol stack is explained in detail.3.On the basis of WAVE protocol stack implementation principle,the application layer program realizes V2 V communication and partial security warning functions: 1)?construction and sending of BSM messages by Internet of vehicles terminals.2)?receiving and content extraction of BSM messages by Internet of vehicles terminals.3)?According to the content of the extracted BSM message,realize the safety warning function for vehicle drivers,and realize the ultimate goal of the terminal design of Internet of vehicles.4.In order to realize multiple functions of the Internet of vehicles terminals,voice transmission,text transmission,video transmission and other functions between each terminal node are realized at the level of non-security functions,thus improving the driving experience.