Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2007-07-24
2007-07-24
Pham, Chi (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
Reexamination Certificate
active
10171623
ABSTRACT:
The invention concerns the transmission of data packets in multicast mode, in which method the packets are sent from a sending end of a physical transmission medium and received by terminals at a receiving end of said medium. It finds a typical application in networks whose terminals cannot listen to each other, which is the case in satellite networks, for example, whereas management implies sending a query message to the terminals in order to determine the presence of an active group of terminals as a function of the reception of a response message from a terminal of said group. A signal is then sent to the terminals from the sending end, preferably the returned response, to indicate reception of a response message from a terminal of the group of terminals, so that terminals that have not sent a response message can act accordingly, in particular by interrupting their own process for sending a response. The method can be integrated transparently into the IGMP and the RFC 1112 standard that governs multicast transmission of data packets. A system for implementing the management method is also provided, and possibly integrated into a router.
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Alcatel
Jones Prenell
Pham Chi
Sughrue & Mion, PLLC
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