Multiplex communications – Communication over free space
Reexamination Certificate
2004-05-17
2010-12-28
Pérez-Gutiérrez, Rafael (Department: 2617)
Multiplex communications
Communication over free space
C370S338000, C370S349000, C370S395430, C370S367000, C370S902000, C370S466000, C370S329000, C370S401000, C370S400000, C370S497000, C370S328000, C370S338000, C709S236000, C709S249000, C455S435100, C455S466000, C455S439000, C455S414100
Reexamination Certificate
active
07860037
ABSTRACT:
A telecommunications system for communicating internet packets between a correspondent node and a mobile node. The system comprises a packet radio network providing packet data bearers for communicating internet packets with nodes. Each of the bearers is defined with respect to a source address of the internet packets, the packet radio network including a gateway support node (GGSN) to provide an interface between the external network and the packet radio network. The GGSN detects whether an internet packet is for providing a binding update to the correspondent node of a first source address of the mobile node to a care-of-address of the mobile node. If the internet packet is a binding update, the GGSN allows egress of internet packets sent from the correspondent node. By allowing egress of packets from the correspondent node having this care-of-address as the destination address, a measure of security is provided.
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Arevalo Joseph
Haverstock & Owens LLP
Orange SA
Perez-Gutierrez Rafael
LandOfFree
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