Source: http://www.google.nl/patents/US20090303120
Timestamp: 2017-12-14 22:44:08
Document Index: 142546300

Matched Legal Cases: ['art 1998', 'art 2000', 'art 2004', 'art 2000', 'art 2005', 'art 2006', 'art 2009', 'art 2005', 'art 2011', 'art 2003', 'art 2007', 'art 2016', 'art 2017', 'art 2012']

Patent US20090303120 - Systems and methods for determining position using a wlan-ps estimated ... - Google Patenten
This disclosure describes a method and system for determining position using a WLAN-PS estimated position as an initial position. In some embodiments, the method can include calculating a WLAN position estimate of the WLAN and satellite enabled device and using the WLAN position estimate as an initial...http://www.google.nl/patents/US20090303120?utm_source=gb-gplus-sharePatent US20090303120 - Systems and methods for determining position using a wlan-ps estimated position as an initial position in a hybrid positioning system
Publicatienummer US20090303120 A1
Aanvraagnummer US 12/479,724
Aanvraagdatum 5 juni 2009
Prioriteitsdatum 6 juni 2008
Ook gepubliceerd als CA2727038A1, CN102100058A, EP2283641A1, EP2283641A4, US7999742, US8054219, US8089398, US8089399, US8130148, US20090303112, US20090303113, US20090303114, US20090303115, US20090303119, US20090303121, US20100052983, US20110298659, WO2009149417A1
Publicatienummer 12479724, 479724, US 2009/0303120 A1, US 2009/303120 A1, US 20090303120 A1, US 20090303120A1, US 2009303120 A1, US 2009303120A1, US-A1-20090303120, US-A1-2009303120, US2009/0303120A1, US2009/303120A1, US20090303120 A1, US20090303120A1, US2009303120 A1, US2009303120A1
Patentcitaties (99), Verwijzingen naar dit patent (94), Classificaties (8), Juridische gebeurtenissen (2)
Systems and methods for determining position using a wlan-ps estimated position as an initial position in a hybrid positioning system
US 20090303120 A1
This disclosure describes a method and system for determining position using a WLAN-PS estimated position as an initial position. In some embodiments, the method can include calculating a WLAN position estimate of the WLAN and satellite enabled device and using the WLAN position estimate as an initial position in satellite position system to determine the location of the WLAN and satellite enabled device.
Afbeeldingen(16)
1. A method of determining the position of a WLAN and satellite enabled device by using a WLAN position estimate as an initial location for a satellite positioning system, the method comprising:
calculating a WLAN position estimate of the WLAN and satellite enabled device; and
using the WLAN position estimate as an initial position in satellite position system to determine the location of the WLAN and satellite enabled device.
2. A system for increasing the time-to-fix of a satellite based position estimate using an initial position provided by WLAN positioning system, the system comprising:
a WLAN module for receiving information from one or more WLAN access points and calculating a position estimate of the WLAN and satellite enabled device; and
a satellite positioning module for obtaining satellite information from at least four different satellites, wherein the satellite positioning module uses the WLAN position estimate as an initial position for a final position estimate.
U.S. patent application Ser. No. (TBA), filed concurrently herewith and entitled “System and Method for Refining a WLAN-PS Estimated Location Using Satellite Measurements in a Hybrid Positioning System;”
HPE estimation device 205 is the module which estimates the expected error of the position estimate of the mobile device. The HPE, or Horizontal Positioning Error is calculated based on previously scanned APs and their characteristics and also characteristics of the received signal, as it was explained in co-pending Skyhook Wireless application Ser. No. 11/625,450 entitled “System and Method for Estimating Positioning Error Within a WLAN Based Positioning System,” the entire disclosure of which is hereby incorporated by reference.
In some embodiments, the system can include a positioning module which can include a WLAN module for receiving information from one or more WLAN access points and calculating a position estimate of the WLAN and satellite enabled device and a satellite positioning module for obtaining satellite information from at least four different satellites, wherein the satellite positioning module can use the WLAN position estimate as an initial position for a final position estimate.
FIG. 7 shows an example of an integrated solution of WLAN-PS and SPS, in which the mobile device detects five WLAN access points 702 and has acquired a signal and raw measurements from two satellites 704. In this example, the WLAN access points are randomly spread around the mobile device, and distance between WLAN access points 702 and possible solutions of two satellites 703 can be used as an indication of distance between WLAN access point and actual location of the mobile device. A region of possible SPS solutions 703 is calculated using measurements from two satellites. The distance between the WLAN access point 702 and SPS possible solution 703 is used as an indicator of distance between WLAN access point and actual location of the mobile device. In this example, all the WLAN access points 702-1 are very close to SPS possible solutions 703, but one WLAN access point 702-2 is not. Therefore, the longer distance between WLAN access point 702-2 and possible SPS solutions 703 is an indicator of a larger distance between WLAN access point 702-2 and the location of the mobile device compared to other detected WLAN access points 702-1. Thus, WLAN access point 702-2 can be weighted according to its distance to SPS possible solutions, or it can be removed from the set of APs to calculate the mobile device location,
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Classificatie in de VS 342/357.48
Coöperatieve classificatie G01S19/34, G01S19/46, G01S5/0257, G01S19/48
Europese classificatie G01S5/02H, G01S19/46
15 juli 2009 AS Assignment
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALIZADEH-SHABDIZ, FARSHID;REEL/FRAME:022959/0949
22 april 2015 FPAY Fee payment