HyperCast - Highly Scalable Multicast Communications

HyperCast - 高度可扩展的组播通信

• 批准号: 9870336
• 负责人: Jorg Liebeherr
• 金额: $ 24.51万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9870336&HistoricalAwards=false
• 关键词: HyperCast; Highly; Scalable; Multicast; Communications

Web page: http://www.cs.virginia.edu/~jorg/research/hypercast/ One of the biggest challenges in computer networking is to meet the demand for advanced multicast services in support of large-scale multicast applications in wide-area networks. Numerous applications demand the availability of a scalable multicast service, including electronic software distribution, collaboration tools, multi-party video games, and distributed simulations. A major impediment for scalability of multicast applications is the need of multicast group members to exchange control information with each other. In this research project, a novel approach to the problem of scalable multicast is proposed where members of a multicast group are organized using a logical control structure with strong symmetrical properties, e.g., an n-dimensional hypercube. By exploiting the symmetry properties of the control structure, operations that require an exchange of feedback information between multicast group members can be efficiently implemented. The goal of the proposed project is to improve the scalability of multicast communications, and demonstrate that the feasibility to accommodate group sizes of several thousandmembers. Using analytical techniques, simulations, and measurement experiments, the fundamental limits and practical trade-offs of different approaches to structure large multicast groups will be investigated. A protocol prototype, called the HyperCast protocol, that maintains a logical hypercube in a packet switching network will be designed and implemented. If successful, the project will influence the currently ongoing research efforts on designing scalable multicast protocols. The solutions developed in this project will be applicable in many areas of computer science and engineering which require multicast communications, including parallel and distributed simulations, distributed information systems, global virtual databases, and meta-computing environments.

网页：http://www.cs.virginia.edu/~jorg/research/hypercast/ 计算机网络面临的最大挑战之一是满足对先进组播服务的需求，以支持广域的大规模组播应用 网络. 许多应用需要可扩展的多播服务的可用性，包括电子软件分发、协作工具、多方视频游戏， 和分布式模拟。多播应用可扩展性的一个主要障碍是多播组成员之间需要交换控制信息。 在这个研究项目中，提出了一种新的方法来解决可扩展多播问题，其中多播组的成员使用具有强对称属性的逻辑控制结构来组织，例如，n维超立方体通过利用 控制结构的对称性，可以有效地实现需要在多播组成员之间交换反馈信息的操作。该项目的目标是提高多播通信的可扩展性，并证明其适应数千成员的组大小的可行性。 使用分析技术，模拟和测量实验，不同的方法来构建大型组播组的基本限制和实际的权衡将进行调查。 一个协议原型，称为HyperCast协议，保持一个逻辑超立方体的分组交换网络将被设计和实现。 如果成功，该项目将影响目前正在进行的研究工作 设计可扩展的多播协议。本项目开发的解决方案 将适用于计算机科学和工程的许多领域， 多播通信，包括并行和分布式仿真，分布式 信息系统、全球虚拟数据库和元计算环境。