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:
Apr. 14, 2009
Filed:
May. 01, 2007
Donald A. Dorsey, Vernon Hills, IL (US);
Sharada Raghuram, Buffalo Grove, IL (US);
Charles P. Binzel, Bristol, WI (US);
Donald A. Dorsey, Vernon Hills, IL (US);
Sharada Raghuram, Buffalo Grove, IL (US);
Charles P. Binzel, Bristol, WI (US);
Motorola, Inc, Schaumburg, IL (US);
Abstract
A method for a radiotelephone to search for a high priority, home, or home-equivalent public land mobile network (PLMN) includes a first step of registering and camping () the radiotelephone on a cell of visited PLMN. A next step includes uniquely identifying () the cell. A next step includes searching () for PLMNs with a higher priority than the visited PLMN while registered and camped on the uniquely identified cell. A next step includes storing () a history of those frequencies found that are not of a higher priority PLMN for the uniquely identified cell. Any subsequent searches for frequencies of higher priority PLMNs performed while registered and camped on that cell includes scanning () for available frequencies except for those frequencies listed in the history for the uniquely identified cell in which the radiotelephone is registered and camped.