Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-08-01
2006-08-01
Feild, Joseph (Department: 2681)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S410000, C455S411000, C379S188000
Reexamination Certificate
active
07085567
ABSTRACT:
The present invention proposes a method for performing a detach of a terminal (MS) registered to a telecommunication network (NW) by associating an identification (TMSI) for said terminal (MS), deriving a signature (TMSI_SIG) for said identification (TMSI), and allocating a pair consisting of said identification (TMSI) and said signature (TMSI_SIG) to said terminal (MS), said method comprising the steps of: sending a detach request (DET_REQ) including said identification (TMSI) and said identification signature (TMSI_SIG) from said registered terminal (MS) to said network (NW); receiving said detach request (DET_REQ) at the network (NW) side; comparing said received detach request (DET_REQ) with a record of registration data of said terminal (MS) kept at the network side; and detaching said terminal (MS) from said network (NW), if said received detach request (DET_REQ) coincides with said record of registration data. Also, the present invention relates to a corresponding registration method and proposes a new format for a detach request message transmitted from a mobile station (MS) as a terminal to a network (NW) controlling device like an MSC, and also relates to correspondingly adapted devices.
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patent: WO 98/35521 (1998-08-01), None
Asha Mehrotra and Leonard S. Golding, “Mobility and Security Management in the GSM System and Some Proposed Future Improvements”,Proceedings of the IEEE, vol. 86, No. 7, Jul. 1998.
Feild Joseph
Nokia Corporation
Smith S.
Squire Sanders & Dempsey LLP
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