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:
Jan. 05, 2010
Filed:
Sep. 29, 2005
Hui Zhao, Lindenhurst, IL (US);
Padmaja Putcha, Gurnee, IL (US);
Hui Zhao, Lindenhurst, IL (US);
Padmaja Putcha, Gurnee, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An integrity protection count synchronization method () initiates () a new connection when a user equipment (UE) is already in connected mode with a network. If new security keys are pending, the UE sends () a START value of zero in an initial direct transfer message. If no new security keys are pending, the UE sends () a non-zero START value based on a Universal Subscriber Interface Module (USIM). Sending a START value of zero when new security keys are pending at the UE forces the network's COUNT-I integrity count value to match the zero COUNT-I value at the UE, which prevents call set-up failure due to inability to pass an integrity protection security check.