Tong Sheng Lin

US Patent:

20150123847, May 7, 2015

Filed:

Sep 8, 2014

Appl. No.:

14/480396

Inventors:

- San Diego CA, US
William James MORRISON - San Francisco CA, US
Jie WU - San Diego CA, US
Krishnaranjan RAO - Sunnyvale CA, US
Tong LIN - Cupertino CA, US

International Classification:

G01S 19/34
G01S 19/24
G01S 19/06

US Classification:

34235774

Abstract:

Techniques for managing power consumption of a Global Navigation Satellite System (GNSS) receiver of a mobile device are provided. These techniques include a method that includes deriving a GNSS search window for the GNSS receiver based on a position uncertainty (PUNC) and a time uncertainty (TUNC), selecting a GNSS search mode based on the GNSS search window and resources available for searching for signals from GNSS satellite vehicles (SVs), wherein an estimated power consumption associated with execution of a GNSS search associated with the GNSS search mode does not exceed a power consumption limit specified for the GNSS receiver conducting the GNSS search using the GNSS search mode, and estimating a position of the mobile device.