SBIR Phase II: Multi-Party Peer-to-Peer V3oIP

这个SBIR第二阶段项目扩展了PI的第一阶段，以创建一个理论上的带宽和延迟高效的多媒体流通信框架。最终目标是一个软件系统，实现小于150毫秒的单向端到端延迟（电话的典型延迟），用于10-30个现场会议，支持宽带音频，全动态视频和宽带网络上的应用程序/桌面共享。 实现多方视频/Web会议的行业标准是客户端-服务器架构。 由于所需的服务器数量和服务器节点所需的带宽，客户端-服务器架构的部署成本很高。点对点方法已经成功地用于大规模文件共享。然而，相对而言，还没有探讨过对等方法来扩大单一会议的与会者人数。 本研究结合即时网路感测与视讯及网路会议领域知识，以建立一个具成本效益且可扩充的点对点串流演算法。多方视频会议中的最大站点数量通常为4-6。给定膝上型计算机/台式计算机的有限屏幕分辨率，用于显示10-30全运动视频和共享应用的方法相对未被探索。用户界面不足导致的用户体验差是采用以前的视频/网络会议工具的主要障碍。这项研究结合了最新的人为因素的发现，创造了一个新颖的用户界面，直观地支持多方通信。自从AT T在1927年发明了视频会议，视频会议一直是一个又一个商业失败。PI先前的研究表明，这种失败的根源是对视频会议的人为因素要求的认识不足。根据以前的研究，他们正在开发一个商业软件系统，这将对远程工作、远程教育和人道主义行动产生重大影响。 该项目旨在为大型会议创建一个低成本的点对点替代客户端-服务器架构。如果成功的话，这项工作中提出的架构可能会产生重大的商业影响。

This SBIR Phase II project extends the PI's Phase I to create a theoretical bandwidth and latency efficient multimedia streaming framework for communication. The ultimate goal is a software system that achieves less than 150 msec one-way end-to-end delay (the typical delay of telephone) for a 10-30 site meeting supporting wideband audio, full motion video, and application/desktop sharing over broadband networks. The industry norm to achieve multiparty video/web conferencing is the client-server architecture. Client-server architecture is expensive to deploy due to the number of servers required and the bandwidth required at the server nodes. Peer-to-peer approaches have been successfully used for large scale file sharing. However, peer-to-peer approaches have been relatively unexplored to scale the number of participants in a single meeting. This research combines real-time network sensing and the domain knowledge of video and web conferencing to create a scalable and cost effective peer-to-peer streaming algorithm. The maximum number of sites in a multiparty videoconferencing is typically 4-6. Given the limited screen resolution of a laptop/desktop, methods for showing 10-30 full motion video and a shared application are relatively unexplored. Poor user experience from inadequate user interface is a major barrier to the adoption of previous video/web conferencing tools. This research combines recent human factor discoveries to create a novel user interface that intuitively supports multiparty communication.Since AT&T invented videoconferencing in 1927, videoconferencing has been one commercial failure after another. The PI's previous research suggests that such failures are rooted in inadequate knowledge of the human factor requirements of videoconferencing. Based on previous research, they are developing a commercial software system which will make substantial impact on telework, remote education, and humanitarian operations. This project aims to create a low-cost peer-to-peer alternative to client-server architectures for large scale meetings. If successful, the architecture proposed in this effort could have significant commercial impact.