| IEEE 802.11网络中质量驱动的视频传输技术研究综述 |
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| 引用本文： | 王海东.IEEE 802.11网络中质量驱动的视频传输技术研究综述[J].电信科学,2013,29(7):106. |
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| 作者姓名： | 王海东 |
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| 作者单位： | 太原科技大学电子信息工程学院 西安交通大学电子信息工程学院 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 质量驱动的跨层技术是提高IEEE 802.11网络中视频传输服务质量的有效手段。传统传输控制技术的目标是降低分组丢失率、提高吞吐量等，但这些性能指标不能准确地反映终端的用户体验，也没有充分考虑视频数据的特点。质量驱动的跨层传输控制技术以提高终端用户的服务质量为直接目标，利用视频流的特点优化传输系统性能。介绍了IEEE 802.11协议关于服务质量的标准化进程，集中讨论了基于轮询和基于竞争的调度机制，并详细综述了两种机制下质量驱动的视频传输技术的最新研究成果及发展动向。
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| 关 键 词： | IEEE 802.11 服务质量 视频传输 质量驱动 |
Recent Advances in Quality-Driven Video Delivery over IEEE 802.11 WLAN |
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| Wang Haidong.Recent Advances in Quality-Driven Video Delivery over IEEE 802.11 WLAN[J].Telecommunications Science,2013,29(7):106. |
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| Authors: | Wang Haidong |
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| Affiliation: | School of Electronic and Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;
School of Electronic and Information Engineering, Xi’an Jiaotong University |
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| Abstract: | Quality-driven video delivery is the key to ensure the quality of service for video transmission over IEEE 802.11 WLAN. The goals of traditional communication technology are to reducing packet loss, increasing throughput, and so on. However, the feature of video flows and experience of users fail to considerate in these targets. The enhancements for QoS support being defined in the IEEE 802.11 standard draft were introduced first. The state-of-the-art scheduling algorithms based on polling and based on contention were described in detail. |
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| Keywords: | IEEE 802 11 quality of service video transmission quality-driven |
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