可分级视频编码覆盖网非一致性随机成员构建算法

黄泳翔 1; 钱德沛 1; 2; 伍卫国 1; 刘涛 1

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可分级视频编码覆盖网非一致性随机成员构建算法

更新时间：2025-05-08

- 可分级视频编码覆盖网非一致性随机成员构建算法
- Non-Uniform Random Membership Management to Construct Overlays for Transferring Scalable Video Coding
- 西安交通大学学报 2009年43卷第6期页码：1-4+32
- 作者机构：
  
  西安交通大学电子与信息工程学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2008-10-22. 作者简介: 黄泳翔(1978-),男,博士生;钱德沛(联系人),男,教授,博士生导师. 基金项目: 国家自然科学基金资助项目(60673180);国家高技术研究发展计划资助项目(2006AA01A109)
- DOI：
  中图分类号： TP391.9
- 网络首发：2009-06-10，
  
  纸质出版：2009
- 稿件说明：
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黄泳翔 1, 钱德沛 1, 2, 等. 可分级视频编码覆盖网非一致性随机成员构建算法[J]. 西安交通大学学报, 2009,43(6):1-4+32.

Non-Uniform Random Membership Management to Construct Overlays for Transferring Scalable Video Coding[J]. 2009, 43(6): 1-4+32.
黄泳翔 1, 钱德沛 1, 2, 等. 可分级视频编码覆盖网非一致性随机成员构建算法[J]. 西安交通大学学报, 2009,43(6):1-4+32. DOI：

Non-Uniform Random Membership Management to Construct Overlays for Transferring Scalable Video Coding[J]. 2009, 43(6): 1-4+32. DOI：

摘要

为了解决采用一致性随机成员算法进行节点管理而导致覆盖网(overlay)系统不具备QoS感知能力的问题

设计并实现了一种应用非一致性随机成员算法的overlay构建协议.在协议框架中

构成overlay的节点选择某一节点为邻居节点的概率与该节点的输出带宽成正比

这样在传输可伸缩编码视频(SVC)数据时

可避免出现上游节点丢弃部分媒体数据而降低下游节点接收质量的情况.测试结果表明

与一致性随机成员算法及多树算法相比

所提协议构建的overlay可以更加有效地支持SVC数据的传输.

Abstract

To solve the problem of the QoS-awareness inability of the overlay that is constructed by uniform random membership management

a non-uniform random membership algorithm is proposed and implemented. Individual peer in the proposed mechanism chooses its neighbors with a probability that is proportional to the out-bandwidth of target peers

and hence the overlay constructed by the algorithm can avoid the situation that downstream peers degrade their receiving QoS that is caused by the upstream peers for adapting to the variation of network bandwidth in discarding part of non-key media data as transferring scalable video coding(SVC). Experiment results and comparisons with the uniform random membership algorithm and the multi-tree algorithm show that the proposed protocol can greatly improve the utilization of peers downlink capacity

and thus more efficiently support the transfer of SVC on the overlay system.

关键词

Keywords

references

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CASTRO M, DRUSCHEL P, KERMARREC A M, et al. SplitStream: high-bandwidth content distribution in a cooperative environment [C]∥Proceedings of IPTPS. Piscataway, NJ, USA: IEEE, 2003:298-313.

HEI Xiaojun, LIANG Chao, LIANG Jian, et al. A measurement study of a large-scale P2P IPTV system[J]. IEEE Transactions on Multimedia, 2007, 9(8): 1672-1687.

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