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。最终目标是一种软件系统，该软件系统为10-30个站点的会议实现低于150毫秒的单向端到端延迟(电话的典型延迟)，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/网络会议的行业标准是客户端-服务器架构。由于服务器节点所需的服务器数量和带宽，客户端-服务器体系结构的部署成本较高。点对点方法已经成功地用于大规模文件共享。然而，用点对点的方法来衡量一次会议的参与者人数相对来说还没有被探索过。这项研究将实时网络感知与视频和网络会议的领域知识相结合，创建了一种可扩展且具有成本效益的对等流媒体算法。多方视频会议中的最大站点数量通常为4-6个。考虑到笔记本电脑/台式机的屏幕分辨率有限，用于显示10-30全动态视频和共享应用程序的方法相对未被探索。由于用户界面不完善，用户体验不佳是采用以前的视频/网络会议工具的主要障碍。这项研究结合了最近的人为因素发现，创造了一种新的用户界面，可以直观地支持多方通信。自1927年AT&T发明视频会议以来，视频会议一直是一个又一个商业失败。PI之前的研究表明，这种失败的根源在于对视频会议的人为因素要求了解不足。基于之前的研究，他们正在开发一种商业软件系统，该系统将对远程工作、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客户端-服务器架构的低成本对等替代方案。如果成功，这项工作中提出的体系结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.