周晓勇,
徐浪,
黄晓舸
重庆邮电大学通信与信息工程学院 重庆 400065
基金项目:国家自然科学基金(61571073)
详细信息
作者简介:申滨：男，1978年生，教授，研究方向为大规模MIMO系统、认知无线电等
周晓勇：女，1994年生，硕士生，研究方向为LTE-V2X关键技术研究
徐浪：男，1993年生，硕士生，研究方向为异构网络融合
黄晓舸：女，1982年生，副教授，主要研究方向为无线通信、移动通信系统5G前沿技术
通讯作者:申滨 shenbin@cqupt.edu.cn
中图分类号:TN929.5计量
文章访问数:1561
HTML全文浏览量:636
PDF下载量:38
被引次数:0
出版历程
收稿日期:2019-02-27
修回日期:2019-12-08
网络出版日期:2019-12-10
刊出日期:2020-02-19
A SideLink-assisted Joint Handover Scheme for Long Term Evolution -Vehicle to Everything System
Bin SHEN,,Xiaoyong ZHOU,
Lang XU,
Xiaoge HUANG
School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
Funds:The National Nature Science Foundation of China (61571073)
摘要
摘要:在LTE-V2X系统中，针对车载用户切换过程中蜂窝链路及SideLink(SL)链路质量不高以及SL辅助切换过程中SL链路易中断的问题，该文提出一种基于SL的联合切换方案，主要包含：联合切换流程设计、联合切换信令流程设计以及联合切换判决算法设计。首先，在联合切换流程中利用SL技术实现联合切换，并对执行联合切换的SL链路质量进行筛选，以保证联合切换的可靠性；其次，对联合切换信令流程进行了完善，以优化SL辅助切换过程中SL链路易中断问题；最后，在联合切换判决算法中将车载用户的移动方向纳入切换判决条件，从而减少不必要的切换。仿真结果显示，该文所提方案能有效提升切换成功率，与此同时还能有效减少执行LTE切换的次数。
关键词:移动通信/
LTE-V2X系统/
联合切换/
SideLink链路/
链路质量/
移动方向
Abstract:For LTE-V2X(Long Term Evolution-Vehicle to Everything) system, the cellular link and the SideLink (SL) are usually unstable in the handover process, and the situation is even deteriorating when the SL is employed to assist the normal handover process. To solve these problems, an SL-assisted joint handover scheme is proposed for vehicles in the network, which mainly includes: joint handover procedure design, signaling design, and the joint handover decision algorithm. Firstly, the SL is established for the vehicles that are about to request for handover. The SL is set up between the pair of vehicles with the best channel quality to ensure the link reliability. Secondly, in order to tackle the perplexing problem of SL being vulnerable in the fast changing radio environment, the joint handover signaling procedure is optimized with respect to two different realistic circumstances. Finally, the vehicle’s moving direction is further included in making the handover decision, thus reducing unnecessary handover operations. Simulation results illustrate that the SL-assisted joint handover scheme can effectively ameliorate the handover success rate and reduce significantly the number of LTE handovers.
Key words:Mobile communication/
Long Term Evolution-Vehicle to Everything (LTE-V2X) system/
Joint handover/
SideLink (SL)/
Link quality/
Direction of movement
PDF全文下载地址:
https://jeit.ac.cn/article/exportPdf?id=ae886f13-f5ee-400a-968e-68cfaa96d16e
