LTE-Advanced关键技术对车联网通信的支持与改进
发布时间：2019-04-22 19:24
【摘要】：近些年,为提高道路交通安全,减少交通堵塞,提升乘车体验,智能交通系统及车联网等概念应运而生。车联网的实现需要车辆之间频繁及时可靠的信息交互,因此选定合适的无线通信技术则显得极为重要。IEEE制定和完善的WAVE/802.11p协议族是目前支持车联网通信的主要技术手段,并得到了广泛的研究和讨论。该协议能够适应车辆节点高速移动以及车联网动态的拓扑结构,为车辆间的通信提供有效保证。但在车辆密度比较大的场景中,不能保证安全信息可靠及时的传输,有时也会引起广播风暴等问题。以LTE-Advanced为代表的新一代移动通信网络快速演进发展,就系统容量,峰值速率,传输时延等关键性能进行了极大优化,并引入了MTC, MBMS和D2D等新特性。本文重点探讨新一代移动通信网络对车联网通信的支持状况并提出改进方案。 本文首先对WAVE/802.11p协议的实现机制和原理进行简要研究,为后续部分的仿真分析做准备。并将LTE/LTE-Advanced的关键技术及其新特性,如MTC、D2D和MBMS,加以重点分析。结合这些新特性的功能和特点,探讨如何将其应用于车联网通信环境。进一步,针对车联网中的安全相关信息,分别对802.11p和LTE/LTE-Advanced进行建模仿真,分析两种机制的特点和对车联网通信的支持状况。考虑到移动通信网络的不足,提出优化方案,结合VANET和蜂窝网络两方面的优点,实现了混合网络中基于蚁群算法的动态数据上传机制。最后通过网络仿真工具NS-3的仿真实现,确认了改进机制的优越性。
[Abstract]:In recent years, in order to improve road traffic safety, reduce traffic jams and enhance ride experience, the concepts of intelligent transportation system and vehicle interconnection have emerged as the times require. The realization of vehicle networking requires frequent, timely and reliable information exchange between vehicles. Therefore, it is very important to select the appropriate wireless communication technology. The WAVE/802.11p protocol family is the main technical means to support the vehicle network communication, and has been widely studied and discussed. This protocol can adapt to the high-speed movement of vehicle nodes and the dynamic topology of vehicle networking, and provide an effective guarantee for the communication between vehicles. However, when the vehicle density is high, it can not guarantee the reliable and timely transmission of safe information, and sometimes it will cause some problems such as broadcast storm. With the rapid evolution of the new generation mobile communication network represented by LTE-Advanced, the key performance such as system capacity, peak rate and transmission delay is greatly optimized, and some new characteristics such as MTC, MBMS and D2D are introduced. This paper focuses on the support of the next generation mobile communication network to the vehicle network communication, and puts forward the improvement scheme. In this paper, the implementation mechanism and principle of WAVE/802.11p protocol are studied briefly in order to prepare for the simulation analysis of the following part. The key technologies and new features of LTE/LTE-Advanced, such as MTC,D2D and MBMS, are analyzed in detail. Combined with the functions and characteristics of these new features, this paper discusses how to apply them to the communication environment of vehicle networking. Furthermore, according to the safety-related information in vehicle networking, 802.11p and LTE/LTE-Advanced are modeled and simulated respectively, and the characteristics of the two mechanisms and the status of support for vehicle networking communication are analyzed. Considering the shortage of mobile communication network, an optimization scheme is proposed, which combines the advantages of VANET and cellular network to realize the dynamic data upload mechanism based on ant colony algorithm in hybrid network. Finally, the superiority of the improved mechanism is confirmed by the simulation realization of the network simulation tool NS-3.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5
本文编号：2463128
[Abstract]:In recent years, in order to improve road traffic safety, reduce traffic jams and enhance ride experience, the concepts of intelligent transportation system and vehicle interconnection have emerged as the times require. The realization of vehicle networking requires frequent, timely and reliable information exchange between vehicles. Therefore, it is very important to select the appropriate wireless communication technology. The WAVE/802.11p protocol family is the main technical means to support the vehicle network communication, and has been widely studied and discussed. This protocol can adapt to the high-speed movement of vehicle nodes and the dynamic topology of vehicle networking, and provide an effective guarantee for the communication between vehicles. However, when the vehicle density is high, it can not guarantee the reliable and timely transmission of safe information, and sometimes it will cause some problems such as broadcast storm. With the rapid evolution of the new generation mobile communication network represented by LTE-Advanced, the key performance such as system capacity, peak rate and transmission delay is greatly optimized, and some new characteristics such as MTC, MBMS and D2D are introduced. This paper focuses on the support of the next generation mobile communication network to the vehicle network communication, and puts forward the improvement scheme. In this paper, the implementation mechanism and principle of WAVE/802.11p protocol are studied briefly in order to prepare for the simulation analysis of the following part. The key technologies and new features of LTE/LTE-Advanced, such as MTC,D2D and MBMS, are analyzed in detail. Combined with the functions and characteristics of these new features, this paper discusses how to apply them to the communication environment of vehicle networking. Furthermore, according to the safety-related information in vehicle networking, 802.11p and LTE/LTE-Advanced are modeled and simulated respectively, and the characteristics of the two mechanisms and the status of support for vehicle networking communication are analyzed. Considering the shortage of mobile communication network, an optimization scheme is proposed, which combines the advantages of VANET and cellular network to realize the dynamic data upload mechanism based on ant colony algorithm in hybrid network. Finally, the superiority of the improved mechanism is confirmed by the simulation realization of the network simulation tool NS-3.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5
【参考文献】
相关期刊论文 前6条
1 王艺;邓佳佳;林毅;;适用于车联网应用的移动通信网络[J];电信科学;2012年06期
2 诸彤宇;王家川;陈智宏;;车联网技术初探[J];公路交通科技(应用技术版);2011年05期
3 王建强;吴辰文;李晓军;;车联网架构与关键技术研究[J];微计算机信息;2011年04期
4 王彬;陈力;张欣;杨大成;;在LTE-Advanced网络下的Device-to-Device通信[J];现代电信科技;2010年07期
5 马子江;许辉;王斌;;LTE多媒体广播多播业务关键技术研究[J];中兴通讯技术;2011年05期
6 祝振军;;LTE概念车撬动车联网市场[J];移动通信;2011年15期
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