Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2005-06-14
2005-06-14
Vincent, David (Department: 2661)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S336000, C455S436000
Reexamination Certificate
active
06907016
ABSTRACT:
In a cellular telecommunications network, a method and system for performing dormant hand-off for a dormant Mobile Node (MN) between a source packet zone an a target packet zone, when the MN still has an active A10and Point-to Point Protocol (PPP) connection in the target packet zone. According to the method, when handed-off, the MN issues an origination request with a Data Ready to Sent (DRS) parameter set to zero for the target Base Station Controller (BSC-T) which responsive to the request further sends an A9-setup-A8registration request to a target Packet Control Function (PCF-T). The PCF-T then sends an A-11Registration Request message to a Packet Data Service Node (PDSN-T) of the target packet zone. Responsive to the receipt of the Registration request, the PDSN-T sends an agent advertisement message to the MN and initiates the Mobile IP (MIP) registration procedure, and the MN can register the care-of-address information relating to the new serving PDSN, the PDSN-T, with its Home Agent (HA). According to another embodiment, the same method is to be used for performing a hand-off of the dormant MN to the target packet zone, when the MN, before issuing the origination request, demands the activation of a packet data session.
REFERENCES:
patent: 6708031 (2004-03-01), Purnadi et al.
patent: 2002/0048266 (2002-04-01), Choi et al.
patent: 2002/0068565 (2002-06-01), Pumadi et al.
patent: 2004/0214574 (2004-10-01), Eyuboglu et al.
patent: WO 00/05909 (2000-02-01), None
Madour Lila
Shafik Karim
Jenkens & Gilchrist P.C.
Telefonaktiebolaget L M Ericsson (Publ)
Vincent David
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