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:
Jul. 05, 2011
Filed:
Feb. 20, 2007
Xiangdong Lin, Irvine, CA (US);
Mangesh Chambarkar, Sunnyvale, CA (US);
Marlene Wan, Sunnyvale, CA (US);
Lionel Garin, Palo Alto, CA (US);
Xiangdong Lin, Irvine, CA (US);
Mangesh Chambarkar, Sunnyvale, CA (US);
Marlene Wan, Sunnyvale, CA (US);
Lionel Garin, Palo Alto, CA (US);
SiRF Technology, Inc., San Jose, CA (US);
Abstract
Systems and methods for estimating a cell center location in a wireless communication system having all interface to a satellite positioning system ('SPS') such as for example, a Geosynchronous Positioning System ('GPS'). The wireless communication system provides service to mobile stations within a cell, each mobile station includes a SPS receiver. Examples of the systems and methods for estimating a cell center location analyze the mobile station locations in a cell as a uniform distribution of mobile station locations and calculate a statistical measure characterizing the mobile station locations as a function of the mobile station locations. In one example, the statistical measure is a maximum likelihood mobile station location. In another example, the statistical measure is the mean mobile station location in the cell. The estimated cell center location may be used to approximate the location of the mobile station during a warm or cold restart of the SPS receiver part of the mobile station.