论文部分内容阅读
视频点播系统中的节点可以在任意时刻选择任意视频并进行拖放等交互式操作,在这一操作过程中会产生播放延迟,影响用户观看满意度,为保证播放流畅性以提高用户满意度,节点需要快速响应该行为产生的查找目的片段请求,在P2P VoD中有效的节点组织策略是实现节点快速定位目的节点的关键.所提策略利用视频片段关联性这一特点,不去具体挖掘各个片段之间关联性强度,使有相似兴趣爱好的节点自组织在一起以实现快速查找目的片段;对该策略引出的节点邻居优化问题,给出近似优化算法.仿真对比实验表明了该策略在降低跳播观看时延和提高系统可扩展性上的有效性.
The nodes in the video-on-demand system can select any video and perform interactive operations such as drag-and-drop at any time. During this operation, a playback delay may occur, affecting user viewing satisfaction. In order to ensure the smoothness of playing to improve user satisfaction, The node needs to respond quickly to the request of finding the target segment generated by this behavior, and the node organization strategy effective in P2P VoD is the key to realize the node’s fast target positioning.The strategy makes use of the feature of video segment relevance, not to dig each segment , The nodes with similar interests and interests are self-organized together to achieve the purpose of quickly finding the target segment.The approximate optimization algorithm is given for the node neighborhood optimization problem derived from the strategy.The simulation experiments show that the proposed strategy can reduce the jump Broadcast latency and improve system scalability effectiveness.