| 面向视频播放的BT协议下载算法的改进 |
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| 引用本文： | 苗文健,杨雅辉. 面向视频播放的BT协议下载算法的改进[J]. 计算机工程与应用, 2010, 46(18): 68-70. DOI: 10.3778/j.issn.1002-8331.2010.18.022 |
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| 作者姓名： | 苗文健 杨雅辉 |
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| 作者单位： | 北京大学 软件与微电子学院，北京 102600 |
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| 摘 要： | P2P协议应用于视频播放是一项热门技术，BT协议作为P2P协议族中的成熟协议，其在文件共享下载方面有着优异的表现。从BT协议的优先级桶式下载算法出发，提出基于速度评价的片选择下载算法，该算法适应视频播放实时性和平滑性要求，使得BT协议成功应用于视频播放，从而为BT协议的应用提供了一种新的商业模式。
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| 关 键 词： | P2P协议 视频播放 BT协议 下载算法 |
| 收稿时间： | 2009-05-22 |
| 修稿时间： | 2009-12-30 |
Improvement of BT downloading algorithm for video broadcast |
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| MIAO Wen-jian,YANG Ya-hui. Improvement of BT downloading algorithm for video broadcast[J]. Computer Engineering and Applications, 2010, 46(18): 68-70. DOI: 10.3778/j.issn.1002-8331.2010.18.022 |
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| Authors: | MIAO Wen-jian YANG Ya-hui |
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| Affiliation: | School of Software and Microelectronics，Peking University，Beijing 102600，China |
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| Abstract: | The P2P real-time video broadcast technology has been quite hot.The BT protocol which is a particular mature P2P protocol has a good performance in downloading data.Based on the BT bucket priority downloading algorithm,an improvement of the piece-selection algorithm is proposed.This algorithm meets both the real-time requirement and the smooth requirement,which successfully improves BT protocol to be fit for video broadcasting.And this provides a new business usage of BT protocol. |
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| Keywords: | P2P protocol video broadcast BT protocol downloading algorithm |
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