郑继亭,胡锦超,李珺

• 1:长安大学信息与网络管理处
• 2:长安大学信息工程学院

摘要(Abstract)：

面向车联网的实际应用需求,构建了一种高速公路环境下的基于4G和DSRC的异构网络通信场景。针对车辆在该场景下可能会在不同网络信道间频繁发生垂直切换导致较高的传输时延和丢包率的问题,在分析研究基于4G与DSRC的高速公路异构网络切换过程的基础上,引入网络跳数、连接次数和行驶轨迹作为切换判决条件,基于TREBOL路由协议设计了一种异构网络垂直切换算法。最后利用Veins仿真平台对提出的异构网络垂直切换算法的切换性能进行对比测试分析。测试结果表明,与基于RSSI的异构网络垂直切换方法相比,所提切换算法能增大车辆与DSRC网络连接的持续时间,并有效减少"乒乓效应"。

关键词(KeyWords)： 车联网;高速公路;异构网络;垂直切换;第四代移动通信技术;专用短程通信

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51278058);; 陕西省自然科学基金(2012JM8011);; 中央高校基本科研专项基金(2013G1241111,2014G1321035)~~

作者(Author): 郑继亭,胡锦超,李珺

DOI: 10.16652/j.issn.1004-373x.2018.01.024

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