Method for call establishment over a packet exchange network

Details Method for call establishment over a packet exchange network Method for call establishment over a packet exchange network

2004-11-16

2008-10-14

Tran, CongVan (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S466000, C455S436000

Reexamination Certificate

active

07436805

ABSTRACT:
The present invention provide a method for call establishment over a packet exchange network which is capable of saving the time required for a call establishment of the PPP by reducing redundant steps for authentication in a SIP call, and to reduce the incoming data amount. The present invention comprising the following steps. Step (a): The TE requests the PDSN for CHAP authentication. This message is received by the AT on behalf of the PDSN. Step (b): The AT requests the TE for the CHAP authentication on behalf of the PDSN, and the maximum packet size MRU receivable by the PTSN is transmitted to the TE. Step (c): The AT accepts the CHAP authentication on behalf of the PDSN. Step (d): The TE accepts the CHAP authentication and the MRU of the PDSN. This message is also received by the AT on behalf of the PDSN.

REFERENCES:
patent: 2002/0181498 (2002-12-01), Hsu et al.
patent: 2006/0013170 (2006-01-01), Shin et al.
Simpson, “The Point to Point Protocol (PPP)”, RFC 1661, Jul. 1994.
P.R0001 Version 1.0, “Wireless IP Architecture based on IETF Protocols”, 3GPP2, Jul. 2000.
P.S0001-A Version 3.0.0, “Wireless IP Network Standard”, 3GPP2, Jul. 2001.
Simpson, “PPP Challenge Handshake Authentication Protocol (CHAP)”, RFC 1994, Aug. 1996.
A.S0007-0 Version 1.0, “1xEV-DO Inter-Operability Specification (IOS) for CDMA 2000 Access Network Interfaces”, 3GPP2, Jun. 2001.

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