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Study and Implementation about Data Link Layer of DSRC Protocol

Author: ChenLingXu
Tutor: ZhangCuiFang
School: Southwest Jiaotong University
Course: Communication and Information System
Keywords: ITS DSRC multithread PDU ETC
CLC: TN915.04
Type: Master's thesis
Year: 2005
Downloads: 214
Quote: 7
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Abstract


To dynamically and intelligently manage vehicles in real time system, people have reaserched and developed the dedicated short range communication protocol which is used to implement a majority of functions of intelligent traffic systems among vehicles.The DSRC system is a wireless communication system which can bidirectionally transmit useful data and traffic information between the road and the vehicle and provide a dynamical and integrative plane about vehicle information.In this paper, a great deal of research about the data link layer of the DSRC protocol is done and the majority of funcitons of the data link layer of the protocol are carried out in the windows 32 environment. Utilizing chain table mechanism of C++ language, the paper educes a method to implement a network protocol.The first chapter of this paper begins with the domestic and overseas background of DSRC research, then analyses the reasons for developing ITS,and expatiates on the significance of the DSRC research and the domestic research actuality of the DSRC protocol.The second chapter discusses the protocol in the mass,depicts overall frame of the protocol compared with OSI model,then explains the function of the data link layer in the whole protocol,and introduces the structure of the second layer frame from four aspects—frame flag,frame transparence,frame checkout and the control field of frame.In the third chapter,all kinds of service prototypes,the control fields and the code regulations of these field are introduced from the MAC layer to the LLC layer.The fourth chapter centers on idiographic implement methods of programme design.At first, this chapter dissertate LLC1 stat mechanism and LLC3 mechanism, analyses overall structure and principle of the programme design.Then the chain table structure in the paper and the flow chart of main thread are pictured.Finally, the programme simulates the communication process

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication network > General issues > Communication protocols, communication protocols
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