车联网无线电通信平台的设计与实现

发布时间：2018-07-29 10:23

【摘要】：随着21世纪的到来,经济得到了飞速的发展,人们的生活条件也得到了很大的改善,汽车的数量也逐渐增多,由此而引发的交通问题也呈现出来,人们开始更多的关注和研究交通问题,车联网技术应运而生。车联网的概念源自于自物联网。车联网主要为了实现车车互联,车人互联以及车路互联。车载环境无线接入WAVE是一套专门为车辆在网络通信环境下所设计的协议,该WAVE协议主要含有IEEE802.11p和IEEE1609系列协议。IEEE802.11p协议标准定义了车联网物理层和MAC层的规范,作为底层协议保证了WAVE系统通信质量的可靠性。IEEE1609协议主要应用于车联网WAVE系统的高层,以满足车辆对无线通信的需求。论文主要围绕车联网无线电通信平台设计与实现展开工作,设计实现了车联网WAVE系统,并在真实的无线信道下,对系统进行测试验证。具体工作如下：(1)论文首先说明了WAVE协议栈的构成,主要包括IEEE802.11p协议,IEEE1609系列协议以及OFDM的基本原理及其关键技术。(2)在研究WAVE协议栈的各组成协议原理的基础上,设计和实现了车联网无线电通信平台发射端与接收端的相关功能模块,在MAC层说明了MAC层的接入方式,MAC层的服务类型,MAC层的帧格式和帧类型。特别对基于CSMA/CA协议的分布式协调功能进行了深入的研究,最终设计实现了MAC帧的发送与接收流程。在网络层详细说明了网络服务使用的无线信息传输格式,WAVE服务广播帧WSA,以及WSM帧的详细封包过程,设计实现了WAVE短消息协议WSMP的发送与接收流程,然后在物理层利用Matlab仿真平台结和USRP实现了一个完整的OFDM无线通信系统,并进行了仿真实验。最终,详细介绍了系统的运行步骤,通过程序测试发送端和接收端的相关性能,并对实验结果给予了详细的分析。
[Abstract]:With the arrival of the 21st century, with the rapid development of the economy, people's living conditions have also been greatly improved, the number of cars has gradually increased, and the traffic problems caused by this have also emerged. People began to pay more attention to and study traffic problems, and the technology of vehicle networking came into being. The concept of car networking derives from the self-internet of things. The main purpose of vehicle networking is to realize the interconnection of cars and cars, the interconnection of cars and people, and the interconnection of cars and roads. Wireless access WAVE in vehicle environment is a set of protocols specially designed for vehicles in network communication environment. The WAVE protocol mainly includes IEEE802.11p and IEEE1609 series protocols. IEEE 802.11p protocol standard defines the specification of physical layer and MAC layer of vehicle network. As the bottom protocol, the reliability of communication quality of WAVE system is guaranteed. IEEE 1609 protocol is mainly applied to the high level of WAVE system in vehicle network, in order to meet the demand of wireless communication of vehicle. This paper mainly focuses on the design and implementation of the vehicle networking radio communication platform, designs and implements the vehicle networking WAVE system, and tests the system under the real wireless channel. The main work is as follows: (1) the composition of WAVE protocol stack is introduced firstly, including the IEEE802.11p protocol IEEE1609 series protocol and the basic principle and key technology of OFDM. (2) on the basis of studying the principle of each component protocol stack of WAVE protocol stack, This paper designs and implements the related function modules of the transmitter and receiver of the vehicle network radio communication platform. In the MAC layer, the access mode of the MAC layer and the service type of the MAC layer are explained, and the frame format and the frame type of the MAC layer are described. In particular, the distributed coordination function based on CSMA/CA protocol is deeply studied, and finally the transmission and receiving flow of MAC frame is designed and implemented. In the network layer, the wireless information transmission format used in the network service is described in detail. The broadcast frame WSAs of wave service and the detailed packet sealing process of WSM frames are described in detail. The sending and receiving flow of WAVE short message protocol (WSMP) is designed and realized. Then a complete OFDM wireless communication system is realized by using Matlab simulation platform and USRP in the physical layer, and the simulation experiment is carried out. Finally, the running steps of the system are introduced in detail, the correlation between the sender and receiver is tested by program, and the experimental results are analyzed in detail.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U495

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