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. 31, 2016
Filed:
Jan. 31, 2014
General Motors Llc, Detroit, MI (US);
Yao Hui Lei, Windsor, CA;
Andrew J. Macdonald, Grosse Pointe Park, MI (US);
General Motors LLC, Detroit, MI (US);
Abstract
A method and a system of controlling a public land mobile network (PLMN) scan rate (PCR) in a vehicle telematics unit. The method carried out by the system includes the steps of: (a) determining a power condition that includes a powered mode, an unpowered mode, and a discontinuous reception (DRx) mode; (b) determining whether the telematics unit is scanning one or more home networks or one or more visitor networks; and (c) setting the PCR based on the determined power condition and the determined network, including: (c1) when in the powered mode and scanning a visitor network, the PCR is set to a first scan rate; (c2) when in the powered mode and scanning a home network, the PCR is set to a second scan rate that is slower than the first rate; and (c3) when in the DRx mode, the PCR is set to a third scan rate that is slower than the second rate.