通信学报 ›› 2019, Vol. 40 ›› Issue (1): 51-63.doi: 10.11959/j.issn.1000-436x.2019018

• 学术论文 • 上一篇    下一篇

车载自组织网视频流媒体协助下载研究

陈亮1,王军1,陈蓉1,顾翔1,王进1,万杰1   

  1. 1 南通大学计算机科学与技术学院,江苏 南通 226019
    2 江苏工程职业技术学院图文信息中心,江苏 南通 226007
  • 出版日期:2019-01-01 发布日期:2019-02-03
  • 作者简介:陈亮(1982-),男,江苏南通人,博士,南通大学副教授,主要研究方向为 ad hoc网络、网络拥塞控制、网络性能分析及优化。|王军(1981- ),男,江苏南通人,江苏工程职业技术学院高级工程师,主要研究方向为大数据、网络。|陈蓉(1997- ),女,江苏泰兴人,主要研究方向为物联网技术。|顾翔(1973- ),男,江苏南通人,博士,南通大学教授,主要研究方向为网络协议、无线传感器网络、车联网。|王进(1981- ),男,江苏海安人,博士,南通大学副教授,主要研究方向为Web智能、推荐系统、不确定性推理。|万杰(1982- ),女,山东青岛人,博士,南通大学讲师,主要研究方向为物联网。
  • 基金资助:
    国家自然科学基金资助项目(61602267);江苏高校自然科学研究基金资助项目(15KJB520029);江苏高校自然科学研究基金资助项目(16KJB520038);江苏现代教育技术研究课题基金资助项目(2017-R-53720);江苏教育信息化研究课题基金资助项目(20172168);南通大学虚拟仿真基金资助项目(13052001);南通大学研究生案例库基金资助项目(AL17010);大学生创新训练计划基金资助项目(2018117);中天智能装备基金资助项目(17ZH040)

Research on video streaming media cooperative downloading in vehicular ad hoc network

Liang CHEN1,Jun WANG1,Rong CHEN1,Xiang GU1,Jin WANG1,Jie WAN1   

  1. 1 School of Computer Science and Technology,Nantong University,Nantong 226019,China
    2 Library and Information Center,Jiangsu College of Engineering and Technology,Nantong 226007,China
  • Online:2019-01-01 Published:2019-02-03
  • Supported by:
    The National Natural Science Foundation of China(61602267);University Science Research Project of Jiangsu Province(15KJB520029);University Science Research Project of Jiangsu Province(16KJB520038);Research on Modern Educational Technology of Jiangsu Province(2017-R-53720);Educational Information Research of Jiangsu Province(20172168);Virtual Reality of Nantong University(13052001);Postgraduate Case Library of Nantong University(AL17010);Training Program of Innovation for Undergraduate(2018117);Zhongtian Smart Equipment Project(17ZH040)

摘要:

针对车辆通信范围及转发状态下信道竞争问题,建立了同向多跳下载流量模型。根据该模型与视频流媒体特点,提出了一种基于服务质量的双向协助下载方案。首先,同向车辆对目标车辆进行多跳协助下载,减少目标车辆等待对向协助车辆到达所消耗的时间。其次,后方基站根据时间优先或画质优先的选车策略,向符合条件的对向车辆加载数据,对向车辆与目标车辆相遇时进行一跳协助下载。NS 仿真表明,所提方案在下载耗时方面优于DSRelay算法与VCoDS算法,并能将画质参数PSNR值维持在较好水平。

关键词: 车联网, 视频流媒体, 协助下载, 服务质量

Abstract:

The same direction multi-hop downloading network flow model was proposed for vehicle communication range and channel competition under forwarding.According to the model and video streaming media characteristic,the same & opposite direction cooperative downloading quality of service (SODCD-QoS) scheme was presented.First,the same direction vehicles helped the target vehicle to achieve multi-hop cooperative downloading.It can reduce the waste of time which the target vehicle has to wait for opposite direction cooperative vehicle.Secondly,the next base stations loaded data into eligible opposite direction vehicles according to vehicles option strategy based on time first or picture quality first.Then the opposite direction vehicles helped the target vehicle to achieve one-hop cooperative downloading.NS simulations show that the SODCD-QoS scheme is better than DSRelay and VCoDS algorithm in terms of download time.Further,the new scheme can maintain good picture quality PSNR.

Key words: vehicular ad hoc network, video streaming media, cooperative downloading, QoS

中图分类号: 

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