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Enabling foreign network multicasting for a roaming mobile node, in a foreign network, using a persistent address

  • US 8,102,792 B2
  • Filed: 03/03/2008
  • Issued: 01/24/2012
  • Est. Priority Date: 06/14/2001
  • Status: Expired due to Fees
First Claim
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1. A processor for use in a mobile node of a communications system including:

  • a first network system serving as a home network for a mobile node and including a first mobility agent which is coupled to a home network multicast system, anda second network system, said second network system including said access node and a foreign network multicast system, the access node including;

    a second mobility agent, anda multicast facility;

    the processor being configured to control the mobile node to implement a communications method, the method comprising;

    a) submitting a signaling message, from the mobile node, to the multicast facility of the access node for joining a multicast data communications group in the foreign network multicast system; and

    b) sending, from the mobile node, unencapsulated multicast data to the multicast data communications group, via the access node, using a source address that is not local to the second, visited, network system.

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