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:
May. 20, 2003
Filed:
Jun. 11, 1999
Marcia Jean Otting, Mundelein, IL (US);
Charles Philipp Binzel, Bristol, WI (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
In a mobile station (MS) of a cellular radiotelephone system, a method of searching for the MS's home public land mobile network (HPLMN) when the MS is camped on a non-HPLMN. The method is performed in thirty second intervals while the MS is already in its receive ready (higher current-drawing) state. The method performs strategic measurements of the receive signal level in order to determine if it is likely that the HPLMN has become available again. If the probability is high that the HPLMN has become available, further data is gathered on the likely available channel. Once the channel is identified, the MS begins the camping procedure to register on the HPLMN.