Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2005-02-25
2010-06-29
Sheikh, Ayaz R (Department: 2476)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S252000, C370S328000, C370S352000, C370S392000, C370S469000
Reexamination Certificate
active
07746852
ABSTRACT:
A communication system using PPP in which a plurality of layer 3 protocols are defined has a problem. PDSN cannot judge which of layer 3 protocols is equipped in a terminal, and NCP phase processes corresponding to all layer 3 protocols of the system are executed. This increases the number of PPP packets transmitted/received between the terminal and PDSN, which prolongs a connection time. In the invention, a new procedure of the NCP phase process is established in a communication system, by which the terminal firstly notifies a layer 3 protocol to PDSN and thereafter the NCP phase process is executed. PDSN waits for a notice of the layer 3 protocol from the terminal, selects the corresponding layer 3 protocol from the layer 3 protocols according to the notice, and executes the NCP phase.
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3GPP2 X.S0011-002-C cdma2000 Wireless IP network Standard: Simple IP and Mobile IP Access Services, Version 1.0.0, Aug. 2003.
Nakahara Naruhito
Teraoka Hitomi
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Lee Andrew C
Sheikh Ayaz R
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