Method and apparatus for group communication with end-to-end reliability

一种可靠性、备份的技术，应用在分局提供特种业务的装置、通过路径配置进行数据交换、数字传输系统等方向，能够解决方案存在可缩放性等问题
CN1965532AInactive Publication Date: 2007-05-16INT BUSINESS MASCH CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INT BUSINESS MASCH CORP
Publication Date
2007-05-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention addresses scalability and end-to-end reliability in overlay multicast networks. A simple end-system multicast architecture that is both scalable in throughput and reliable in an end-to-end way is used. In this architecture, the transfers between nodes use TCP with backpressure mechanisms to provide data packet transfers between intermediate nodes having finite-size forwarding buffers. There is also a finitesize backup buffer in each node to store copies of packets which are copied out from the receiver window to the forwarding buffers. These backup buffers are used when TCP connections are re-established to supply copies of data packets for the children nodes after their parent node fails, maintaining a complete sequence of data packets to all nodes within the multicast overlay network. The architecture provides end-to-end reliability, tolerates multiple simultaneous node failures and provides positive throughput for any group size and any buffer size.
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Description

technical field

[0001] The present invention relates to methods and devices for content delivery via application layer multicast with scalable throughput and guaranteed end-to-end reliability. Background technique

[0002] In many applications, such as Internet-based content delivery networks, the preferred means of delivering information is multicast, which delivers information to a select group of hosts simultaneously. A set of standards currently exists to support multicasting in Internet Protocol ("IP") networks. However, overlay (or application layer) multicast has become an increasingly popular alternative to IP multicast for supporting networks. Although IP multicast is not universally available on the Internet and requires the assignment of globally unique IP addresses to each communication group, multicast coverage can be easily implemented on existing infrastructure and does not require any global group identifiers .

[0003] At a high level of abstraction, an o...

Claims

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