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| 基于负载自适应的无线自组网视频传输队列调度算法 | |
| 引用本文： | 李悦,陈卫卫,单胜,丁良辉.基于负载自适应的无线自组网视频传输队列调度算法[J].电视技术,2015,39(7). |
| 作者姓名： | 李悦 陈卫卫 单胜 丁良辉 |
| 作者单位： | 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 |
| 基金项目： | 创新研究群体科学基金;国家高技术研究发展计划（863计划） |
| 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. |
| 关 键 词： | 负载自适应 无线自组网 视频传输 |
| 收稿时间： | 2014/10/20 0:00:00 |
| 修稿时间： | 2014/12/8 0:00:00 |
Load Adaptive Queue Scheduling for Video Transfer in Wireless Ad Hoc Networks |
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| Li Yue,Chen Weiwei,Shan Sheng and Ding Lianghui.Load Adaptive Queue Scheduling for Video Transfer in Wireless Ad Hoc Networks[J].Tv Engineering,2015,39(7). | |
| Authors: | Li Yue Chen Weiwei Shan Sheng and Ding Lianghui |
| Affiliation: | Naval Armament Research Institute,Beijing,China,China Electronic System Engineering Company,Beijing,China,State Grid information,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai,China |
| Abstract: | Development of multimedia on mobile terminals has been the trend, and how to transfer video in wireless ad hoc networks has been a hot research topic in recent years. In this paper, we propose cross-layer optimization scheme for video transfer based on network load. 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 resource is limited. Simulation results show that the performance of the video, i.e., PSNR, can be improved up to 3dB in heavy-load and multi-hop scenario. Compared with traditional scheduling algorithm, system delay can also be reduced significantly. |
| Keywords: | Load adaptive Wireless ad hoc networks video transfer |
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