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首页> 外文期刊>Journal of network and computer applications >Peer-to-peer multipoint video conferencing with layered video
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Peer-to-peer multipoint video conferencing with layered video

机译：具有分层视频的对等多点视频会议

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摘要

A peer-to-peer (P2P) architecture for multipoint video conferencing using layered video coding at the end hosts is proposed. The system primarily targets end points with low bandwidth network connections and enables them to create a multipoint video conference without any additional networking and computing resources beyond what is needed for a point-to-point conference. For P2P multipoint video conferencing applications, wide-area collaboration is significant for connecting participants from different parts around the globe to support collaborative work. In our system, peers collaborate for streaming video, and the motivation behind the use of layered video is to overcome the problem of denying video requests by peers and assure that each participant peer can view any other participant at any configuration. Layered video encoding techniques usable within this architecture are discussed. A protocol for operating the system has been developed, simulated and its performance has been analyzed. Furthermore, a multi-objective optimization approach has been developed to simultaneously minimize the number of base layer receivers and the delay experienced by the peers while maximizing the granted additional requests to support peers having multiple video input bandwidths. The use of the multi-objective optimization scheme is demonstrated through an example scenario and simulations. A prototype has also been implemented, and the system has been formally, specified and verified.
机译：提出了一种在端主机使用分层视频编码进行多点视频会议的对等（P2P）体系结构。该系统主要针对具有低带宽网络连接的端点，并使它们能够创建多点视频会议，而无需任何额外的网络和计算资源，而无需进行点对点会议。对于P2P多点视频会议应用程序而言，广域协作对于连接来自全球各地的参与者以支持协作工作非常重要。在我们的系统中，对等方协作以流式传输视频，使用分层视频的动机是要克服对等方拒绝视频请求的问题，并确保每个参与者对等方都可以在任何配置下查看任何其他参与者。讨论了可在此体系结构中使用的分层视频编码技术。已经开发，仿真了用于操作系统的协议，并对其性能进行了分析。此外，已经开发了一种多目标优化方法，以同时最小化基础层接收器的数量和对等端所经历的延迟，同时最大化所授予的附加请求以支持具有多个视频输入带宽的对等端。通过示例场景和模拟来演示多目标优化方案的使用。原型也已实现，并且系统已正式确定，指定和验证。

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