Multiplex communications – Communication over free space – Portable address responsive receiver
Reexamination Certificate
2002-06-14
2008-03-04
Chin, Wellington (Department: 2616)
Multiplex communications
Communication over free space
Portable address responsive receiver
C370S352000, C370S401000, C370S432000
Reexamination Certificate
active
07339903
ABSTRACT:
Permitting a mobile host to roam in a foreign network, with multiple access node handoffs, while permitting foreign network multicasting by (i) having the mobile node (MN) use a persistent address, for purposes of multicasting, and (ii) relaxing or modifying reverse path forwarding checks, and (iii) modifying the forwarding of multicast packets sent from a non-local source address. The persistent address, used in mobile networks as the source address in the IGMP Membership reports and the multicast packets, may be the permanent and hence stable host home address (HoA). This enables the HoA to be supported as a source address by foreign agents (FAs) and multicast routing protocols in foreign networks.
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Chin Wellington
Hyun Soon D.
QUALCOMM Incorporated
Straub Michael P.
Straub & Pokotylo
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