The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 1999
Filed:
Apr. 30, 1997
Francois Sawyer, St-Hubert, CA;
Eric Turcotte, Verdun, CA;
Telefonaktiebolaget, Stockholm, SE;
Abstract
A system and method of managing Temporary Mobile Station Identity (TMSI) parameters in a radio telecommunications network having a first mobile switching center (MSC), a second MSC, and a mobile station operating initially in a service area of the first MSC. A first Validity Area Parameter (VAP) is transmitted from the first MSC and a second VAP is transmitted from the second MSC. The first MSC then assigns a first TMSI to the mobile station, and utilizes the first TMSI to identify the mobile station while the mobile station operates within the service area of the first MSC. The mobile station then determines whether it is receiving the second VAP, and invalidates the first TMSI upon determining that the mobile station is receiving the second VAP. The mobile station then registers in the second MSC utilizing the mobile station's Mobile Identification Number (MIN). The second MSC then assigns a second TMSI to the mobile station which is utilized to identify the mobile station while the mobile station operates within the service area of the second MSC. In an alternative embodiment, TMSIs are allocated by each visitor location register (VLR) in the network, and a single TMSI is utilized to identify the mobile station in all MSCs associated with the allocating VLR.