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:
Mar. 08, 2011
Filed:
Sep. 27, 2004
Applicant:
Yiu Ming Lam, Waterloo, CA;
Inventor:
Yiu Ming Lam, Waterloo, CA;
Assignee:
Research In Motion Limited, Waterloo, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for efficient network scanning that selects candidate frequencies based upon the frequency bands that were noted as being active during a previous network scan. A mobile device performs a full network scan on power up or on radio cycle and determines the available active bands. This information is stored as active band information on the device. When the device loses coverage on a selected one of the bands, then it identifies a candidate frequency based upon the stored active band information and attempts to locate a suitable network on the candidate band.