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    • 4. 发明授权
    • Method of multicasting
    • 多播方法
    • US5905871A
    • 1999-05-18
    • US722447
    • 1996-10-10
    • Richard Wayne BuskensSanjoy PaulMuhammad Ali Siddiqui
    • Richard Wayne BuskensSanjoy PaulMuhammad Ali Siddiqui
    • H04L12/18H04L12/56G06F15/16
    • H04L47/263H04L12/185H04L12/1868H04L47/10H04L47/15H04L47/27
    • A multicasting method transmits data segments, including one or more data packets, over an established global multicast tree from a Sender S to a dynamically changing set of receivers, including at least one unknown Receiver R. In response to a data segment transmission, the Sender S receives a first status signal from the at least one unknown Receiver R (and/or any known Designated Receivers DRs) indicating the addition of and packet reception status of the unknown Receiver R (and/or any known Designated Receivers DRs) which has joined the multicast. In response to the status signals, the Sender S retransmits to the unknown Receiver R (and/or any known Designated Receivers DRs) those packets not received thereat. In this manner the unknown Receiver R (and/or any known Designated Receivers DRs) is added to the multicast session and retransmissions thereto are handled in the same manner as other receivers connected to the multicast session.
    • 多播方法通过已建立的全局多播树从发送方S向包括至少一个未知接收机R的动态变化的接收机组发送包括一个或多个数据分组的数据段。响应于数据段传输,发送方 S从至少一个未知接收机R(和/或任何已知的指定接收机DR)接收到指示未连接的未知接收机R(和/或任何已知的指定接收机DR)的添加和分组接收状态的第一状态信号 组播。 响应于状态信号,发送方S向未在其接收的那些分组重传到未知接收机R(和/或任何已知的指定接收机DR)。 以这种方式,未知接收机R(和/或任何已知的指定接收机DR)被添加到多播会话中,并且以与连接到多播会话的其他接收机相同的方式处理其重传。