基于VANET的通信策略及应用研究

发布时间：2019-03-16 20:58

【摘要】：随着通信技术的迅速发展,智能交通系统应用应运而生。汽车作为智能交通的节点,使用移动服务商的3G或4G通信网络可以方便的接入互联网,但是目前来看通信费用的不合理及服务质量的低下制约着这种接入方式的发展。而近些年来路边接入点的大规模部署,使用802.11标准或是DSRC通信技术将汽车联入路边基础设备中实现互联网的信息交互,其可行性已经被证实。本文以高速公路环境下的车载通信状况为背景,介绍了基于VANET的道路通信状况,研究了在车载环境下的协同通信及媒体接入机制,同时针对路边基础设备不足引起的盲区通信中断建立了辅助下载方法。本文的主要研究内容包括一下几个方面：(1)对VANET的主要标准组织及相关概念进行了介绍,研究了车载环境下主要的通信类型及功能实体,对VANET的体系结构进行了阐述。(2)通过对VANET协同通信架构及通信协议栈的介绍,明确了以802.11P及WAVE协议簇作为VANET的通信协议,及其相比其他通信手段的优势。同时研究了车载环境下多信道通信协议机制。(3)针对高速环境下RSU通信范围有限,车辆在同基站通信过程中大部分处于下载盲区的状况,研究了基于数据节点冗余下载的通信机制,通过选择合适的数据携带节点集及数据分配算法,提高系统数据的吞吐量。(4)本文从工程应用的角度介绍了车联网在汽车监管行业中的应用,其中主要研究了在VANET通信架构下,车联网同保险行业的结合对车辆监管以及安全控制的解决方案。
[Abstract]:With the rapid development of communication technology, the application of intelligent transportation system emerges as the times require. As the node of intelligent transportation, cars can access the Internet conveniently by using 3G or 4G communication network of mobile service provider. But at present, the unreasonable communication cost and the low quality of service restrict the development of this kind of access mode. In recent years, the large-scale deployment of roadside access points, using the 802.11 standard or DSRC communication technology to connect cars into roadside infrastructure to achieve Internet information interaction, its feasibility has been proved. This paper introduces the condition of road communication based on VANET, and studies the cooperative communication and media access mechanism in vehicle environment, based on the background of on-board communication in expressway environment. At the same time, the auxiliary download method is established for blind area communication interruption caused by the shortage of roadside infrastructure. The main contents of this paper include the following aspects: (1) the main standard organization and related concepts of VANET are introduced, and the main communication types and functional entities in vehicle environment are studied. The architecture of VANET is described. (2) through the introduction of VANET cooperative communication architecture and communication protocol stack, it is clear that 802.11P and WAVE protocol suite are the communication protocols of VANET and their advantages over other communication means. At the same time, the multi-channel communication protocol mechanism in vehicle environment is studied. (3) aiming at the limited range of RSU communication in high-speed environment, the majority of vehicles in the process of communication with the base station are in the download blind area. The communication mechanism based on redundant download of data nodes is studied, and the appropriate data-carrying node set and data allocation algorithm are selected. Improve the throughput of system data. (4) from the point of view of engineering application, this paper introduces the application of vehicle interconnection in automobile supervision industry, in which the main research is based on VANET communication architecture. The combination of vehicle interconnection and insurance industry provides solutions for vehicle supervision and safety control.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

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