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基于负载自适应的Ad Hoc网视频传输队列调度算法
  • ISSN号：1002-8692
  • 期刊名称：《电视技术》
  • 时间：0
  • 分类：TN915[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构：[1]海军装备研究院,北京100616, [2]中国电子系统工程公司,北京100141, [3]国家电网公司信息通信分公司,北京100761, [4]上海交通大学电子工程系,上海200240
  • 相关基金：基金项目：国家自然科学基金项目（61301117;61102051;61221001;61420106008）;国家高技术研究发展“863”计划项目（2012AA011701;2012AA121601）;上海交通大学“科技创新专项资金”（AF0300021）;上海市数字媒体处理与传输重点实验室项目（12DZ2272600）
作者： 李悦[1], 陈卫卫[2], 单胜[3], 丁良辉[4]
关键词： 负载自适应, 无线自组网, 视频传输, load adaptive, wireless ad hoc networks, video transfer
中文摘要：

移动终端多媒体业务的发展目前已经成为终端发展的必然趋势.如何在移动终端构成Ad hoc网络时有效地进行视频传输是无线网络研究的热点之一.提出了一种基于负载状况的跨层优化方案,其基本思想是结合应用层视频编码的特点和接入层的网络负载和资源的情况联合进行优化.在特定的资源下通过概率接入的方法对重要性更高的数据包进行更优先的接入.仿真结果显示,在网络处于高负载、多跳传输等场景下,提出的方案视频传输质量PSNR值提升3 dB以上.相对于传统调度算法,系统时延也可以大幅度降低.

英文摘要：

Development of multimedia on mobile terminals has been the trend, and how to transfer video in wireless ad hoc net- works has been a hot research topic in recent years. In this paper, the cross-layer optimization scheme for video transfer based on network load is proposed. The proposed scheme considers both video coding on application layer and network load status on MAC layer to optimize the video quality. Packets with higher priority are transmitted with high access probability when the network re- source is limited. Simulation results show that the performance of the video, i.e. ,PSNR, can be improved up to 3 dB in heavy- load and multi-hop scenario. Compared with traditional scheduling algorithm, system delay can also be reduced significantly.

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期刊信息
  • 《电视技术》
  • 北大核心期刊（2011版）
  • 主管单位:中国电子科技集团公司
  • 主办单位:电视电声研究所
  • 主编：许盈（执行主编）
  • 地址：北京市朝阳区酒仙桥北路乙7号
  • 邮编：100015
  • 邮箱：tvea@263.net.cn; dsss@chinajournal.net.cn
  • 电话：010-59570246
  • 国际标准刊号：ISSN：1002-8692
  • 国内统一刊号：ISSN：11-2123/TN
  • 邮发代号:2-354
  • 获奖情况:
  • 第三届国家期刊奖百种重点期刊、中国期刊方阵双百...
  • 国内外数据库收录:
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  • 被引量:12712