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首页> 外国专利> Method for managing multicast addresses for transmitting and receiving multimedia conferencing information on an internet protocol (IP) network implemented over an ATM network

Method for managing multicast addresses for transmitting and receiving multimedia conferencing information on an internet protocol (IP) network implemented over an ATM network

机译：在ATM网络上实施的用于管理在Internet协议（ip）网络上发送和接收多媒体会议信息的多播地址的方法

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In a multicast capable IP network (102) implemented over an ATM network, each client terminal on a multimedia conference, for each media type it transmits, is assigned a multicast IP address and a port number (together known as a socket) on which to transmit packets, wherein each assigned multicast IP address is unique and different than the multicast IP address assigned to any other client for any media type. Each client terminal then selects, for each media type, which clients on the conference it wants to receive packets from. Only packets that are in fact requested by a client are routed over the multicast IP network to the requesting client. A single special purpose Multicast Address Resolution System (MARS) server is associated with the conference when the conference is established. Each client terminal uses that MARS server, whether on the same or different IP sub-networks, but on a common ATM network, for purposes of mapping the multicast IP addresses used in the conference into a set of unicast ATM endpoint addresses used by the ATM-connected client terminals. Similarly, when a specific conference uses a Multicast Server, a single special purpose Multicast Server is used for all clients on the conference, whether on the same or different IP sub-networks, for purposes of establishing point-to-multipoint ATM connections to the conference endpoints.
机译：在通过ATM网络实现的具有多播功能的IP网络（102）中，多媒体会议上的每个客户终端，针对其传输的每种媒体类型，都分配有一个多播IP地址和一个端口号（统称为套接字），发送数据包，其中每个分配的多播IP地址都是唯一的，并且与为任何媒体类型分配给任何其他客户端的多播IP地址不同。然后，每个客户终端为每种媒体类型选择其会议上要从中接收数据包的哪些客户。只有实际上由客户端请求的数据包才通过多播IP网络路由到发出请求的客户端。建立会议后，将单个专用多播地址解析系统（MARS）服务器与会议关联。每个客户终端都使用该MARS服务器（无论是在相同或不同的IP子网上，还是在一个通用ATM网络上），目的是将会议中使用的多播IP地址映射到ATM使用的一组单播ATM端点地址。 -连接的客户终端。同样，当特定会议使用多播服务器时，单个专用多播服务器将用于会议上的所有客户端（无论是在相同还是不同的IP子网上），以建立到该点对点的ATM连接。会议端点。

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