基于NS-3的专用短程通信协议性能研究
发布时间：2018-09-13 16:36
【摘要】：智能交通系统(简称ITS),是一种运用先进的通信、控制、信息等高新技术,对传统的运输系统进行改善而形成的一种智能化、社会化、信息化的新型的交通运输系统。车载自组网作为ITS的重要组成部分之一,通过车辆之间(车-车)以及车辆和路旁基础设备之间(车-路)的通信进行不同类型的业务信息的传输,从而可以提高道路交通的安全和效率、减少交通堵塞、为驾驶员提供车载服务等。在车载自组织网络中,专用短程通信(Dedicated ShortRange Communication,简称DSRC)是一种高效的和专用的无线通信技术,它可以实现小范围内语音、数据和图像的准确、可靠和实时的双向传递,将行驶车辆和路边基础设施有机的连接,因而成为ITS的通信的重要平台。 本论文研究的专用短程通信使用接入协议IEEE802.11p通过增强型分布式接入控制Enhanced Distribution Coordinate Access,EDCA)及优先级划分来提供通信保证。研究中基于IEEE802.11p协议的车辆无线通信系统作为智能交通的一部分,能极大地改善交通系统的有效性、实时性和安全性。 本论文对车载无线通信系统中的关键技术进行深入研究。对基于无线Ad Hoc网络的车载自组织网络中的用于专用短程通信(DSRC)协议—IEEE802.11p协议作了较深入的研究,将IEEE802.11p协议与传统无线局域网协议进行对比,分析了IEEE802.11p在物理层(PHY)与媒体接入控制层(MAC)所做的修改。 本论文在NS-3网络仿真平台上研究IEEE802.11p协议的接入原理、接入机制、性能仿真及IEEE802.11p性能改进研究。从分组平均时延,丢包率和吞吐量三个方面进行仿真实验,研究IEEE802.11p和普通的IEEE802.11协议标准的异同,及其在车载环境下的优势。并且,通过仿真实验,研究车辆距离、车辆速度和车辆密度对IEEE802.11p协议性能的影响。并针对仿真实验所发现的问题,提出一些协议改进的设想,做一部分的验证。同时指出IEEE802.11p在目前的专用短程通信应用中所存在的一些问题和未来的研究发展方向。
[Abstract]:Intelligent Transportation system (ITS),) is a new type of intelligent, socialized and informational transportation system, which is formed by using advanced high technology, such as communication, control, information and so on, to improve the traditional transportation system. As one of the important components of ITS, vehicle-borne ad hoc networks transmit different types of traffic information through the communication between vehicles and vehicle-side infrastructure (vehicle-road). It can improve the safety and efficiency of road traffic, reduce traffic jam, and provide vehicle service for drivers. Special short range communication (Dedicated ShortRange Communication,) is an efficient and special wireless communication technology in vehicle-borne ad hoc networks. It can realize accurate, reliable and real-time two-way transmission of voice, data and images in a small range. Vehicle and roadside infrastructure will be connected organically, so it becomes an important communication platform of ITS. In this paper, the dedicated short-range communication access protocol (IEEE802.11p) provides the communication guarantee by enhanced distributed access control (Enhanced Distribution Coordinate Access,EDCA) and priority partition. As a part of intelligent transportation, the vehicle wireless communication system based on IEEE802.11p protocol can greatly improve the efficiency, real-time and security of the traffic system. In this paper, the key technologies of vehicle wireless communication system are studied. In this paper, the (DSRC) protocol for special short-range communication, -IEEE802.11p, which is used in the vehicle-borne ad hoc network based on wireless Ad Hoc network, is studied deeply. The IEEE802.11p protocol is compared with the traditional WLAN protocol. The modification of IEEE802.11p in physical layer (PHY) and media access control layer (MAC) is analyzed. This paper studies the access principle, access mechanism, performance simulation and IEEE802.11p performance improvement of IEEE802.11p protocol on NS-3 network simulation platform. The simulation experiments are carried out from three aspects: average packet delay, packet loss rate and throughput. The similarities and differences between IEEE802.11p and common IEEE802.11 protocol standards and their advantages in vehicle environment are studied. Furthermore, the effects of vehicle distance, vehicle speed and vehicle density on the performance of IEEE802.11p protocol are studied through simulation experiments. Aiming at the problems found in the simulation experiment, some suggestions of protocol improvement are put forward, and a part of verification is made. At the same time, it points out some problems existing in the application of IEEE802.11p in the current application of special short-range communication and the future research and development direction.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5;TN915.04
本文编号：2241728
[Abstract]:Intelligent Transportation system (ITS),) is a new type of intelligent, socialized and informational transportation system, which is formed by using advanced high technology, such as communication, control, information and so on, to improve the traditional transportation system. As one of the important components of ITS, vehicle-borne ad hoc networks transmit different types of traffic information through the communication between vehicles and vehicle-side infrastructure (vehicle-road). It can improve the safety and efficiency of road traffic, reduce traffic jam, and provide vehicle service for drivers. Special short range communication (Dedicated ShortRange Communication,) is an efficient and special wireless communication technology in vehicle-borne ad hoc networks. It can realize accurate, reliable and real-time two-way transmission of voice, data and images in a small range. Vehicle and roadside infrastructure will be connected organically, so it becomes an important communication platform of ITS. In this paper, the dedicated short-range communication access protocol (IEEE802.11p) provides the communication guarantee by enhanced distributed access control (Enhanced Distribution Coordinate Access,EDCA) and priority partition. As a part of intelligent transportation, the vehicle wireless communication system based on IEEE802.11p protocol can greatly improve the efficiency, real-time and security of the traffic system. In this paper, the key technologies of vehicle wireless communication system are studied. In this paper, the (DSRC) protocol for special short-range communication, -IEEE802.11p, which is used in the vehicle-borne ad hoc network based on wireless Ad Hoc network, is studied deeply. The IEEE802.11p protocol is compared with the traditional WLAN protocol. The modification of IEEE802.11p in physical layer (PHY) and media access control layer (MAC) is analyzed. This paper studies the access principle, access mechanism, performance simulation and IEEE802.11p performance improvement of IEEE802.11p protocol on NS-3 network simulation platform. The simulation experiments are carried out from three aspects: average packet delay, packet loss rate and throughput. The similarities and differences between IEEE802.11p and common IEEE802.11 protocol standards and their advantages in vehicle environment are studied. Furthermore, the effects of vehicle distance, vehicle speed and vehicle density on the performance of IEEE802.11p protocol are studied through simulation experiments. Aiming at the problems found in the simulation experiment, some suggestions of protocol improvement are put forward, and a part of verification is made. At the same time, it points out some problems existing in the application of IEEE802.11p in the current application of special short-range communication and the future research and development direction.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5;TN915.04
【参考文献】
相关期刊论文 前8条
1 罗志锋;徐洪刚;何山;;车路互联网的底层协议-802.11p标准[J];电子质量;2011年11期
2 王亮;贺知明;;802.11p物理层OFDM基带调制器的FPGA实现[J];电子质量;2012年09期
3 赵鼎新;谢显中;王昭然;;车载无线网络中基于冲突估计的多信道选择策略[J];吉林大学学报(理学版);2012年03期
4 李浩;高泽华;高峰;赵荣华;;IEEE 802.11无线局域网标准研究[J];计算机应用研究;2009年05期
5 金纯;柳兴;万宝红;周晓军;;IEEE802.11P:车载环境下的无线局域网[J];通信技术;2009年01期
6 张登银;张保峰;;新型网络模拟器NS-3研究[J];计算机技术与发展;2009年11期
7 曹颖荣;林小玲;;IEEE802.11p无线车载自组网络协议的性能分析与模拟[J];仪表技术;2011年02期
8 卢[K娜;林小玲;;城市车载Ad Hoc网络的模拟研究[J];仪表技术;2011年04期
相关博士学位论文 前1条
1 李晓鸿;无线自组织网络拓扑控制算法和协议研究[D];湖南大学;2010年
，本文编号：2241728
本文链接：https://www.wllwen.com/kejilunwen/wltx/2241728.html
