Automatic GPRS/EDGE re-attach

Details Automatic GPRS/EDGE re-attach Automatic GPRS/EDGE re-attach

2007-02-20

2007-02-20

Feild, Joseph (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S432200, C455S454000, C455S452200, C455S450000, C455S452100, C455S426100, C455S525000, C455S437000, C370S338000, C370S349000

Reexamination Certificate

active

10711599

ABSTRACT:
The present invention describes a method of automatically re-establishing a GPRS/EDGE connection between a mobile station and a network following successful execution of a network detach request. The mobile station receives a detach_request from the network to terminate a current GPRS/EDGE connection between the mobile station and the network. The mobile station then terminates the GPRS/EDGE connection with the network pursuant to the received detach request. The mobile station then determines if the detach_type parameter associated with the detach_request is set to re-attach_not_required. If this is true, then the mobile station determines if the detach_cause parameter associated with the detach request contains a null value. If this is also true, then the mobile station monitors a timeout parameter. Upon expiration of the timeout parameter the mobile station automatically initiates a GPRS/EDGE re-attachment with the network.

REFERENCES:
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patent: 6792284 (2004-09-01), Dalsgaard et al.
patent: 7047007 (2006-05-01), Asadi
Digital Cellular Telecommunications System (Phase 2+): Universal Mobile Radio Interface Layer 3 specification; Core network Protocols; Stage 3 (3GPP TS 24.008 version 5.10.0 Release 5); ETSI TS 124 008:, ETSI Standards, European Telecommunications Standards Institute, Sophia-Antipo, yr. 2003.
Sony Ericsson Mobile Communications AB, International Application Ser. No. PCT/US2006/011356, “International Search Report”, Jul. 22, 2005.
Sony Ericsson Mobile Communications AB, International Application Ser. No. PCT/US2006/011356 ,“Written Opinion”, Jul. 22, 2005.

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