Patents by Inventor Kaveh Pahlavan

Kaveh Pahlavan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9955358
    Abstract: In one embodiment, a technique is provided for building a reference database used to estimate a position of a wireless local area network (WLAN) enabled device. Samples are obtained for WLAN access points, the samples for each WLAN access point being based on WLAN signals transmitted by the WLAN access point and received by one or more scanning devices. Software of a WLAN positioning system executing on one or more computing devices estimates a position of each WLAN access point based on the samples of the WLAN access point. The software also estimates a geographical area covered by the samples of each WLAN access point and determines a quality metric of each WLAN access point based on the estimated geographical area covered by the samples of the WLAN access point. The software then builds the reference database based on the estimated position and quality metric of each WLAN access point.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: April 24, 2018
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan, Nicolas Brachet
  • Publication number: 20160269914
    Abstract: In one embodiment, a technique is provided for building a reference database used to estimate a position of a wireless local area network (WLAN) enabled device. Samples are obtained for WLAN access points, the samples for each WLAN access point being based on WLAN signals transmitted by the WLAN access point and received by one or more scanning devices. Software of a WLAN positioning system executing on one or more computing devices estimates a position of each WLAN access point based on the samples of the WLAN access point. The software also estimates a geographical area covered by the samples of each WLAN access point and determines a quality metric of each WLAN access point based on the estimated geographical area covered by the samples of the WLAN access point. The software then builds the reference database based on the estimated position and quality metric of each WLAN access point.
    Type: Application
    Filed: May 18, 2016
    Publication date: September 15, 2016
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan, Nicolas Brachet
  • Patent number: 9363785
    Abstract: Methods and systems for classifying WLAN access points according to the quality of estimation of characteristics of the WLAN access points are provided. The classifications may be used to scale a reference database and quantify an expected error of estimation of the characteristics of the access points. WLAN access points may be classified based on their impact on a user's position, speed of travel, and direction of travel estimation accuracy in a WLAN positioning system. A method for determining a quality of estimation of characteristics of a Wi-Fi access point comprises a Wi-Fi enabled scanning device measuring a number of received signal strength (RSS) samples of the Wi-Fi signal transmitted by the Wi-Fi access point. A total distance traveled by the Wi-Fi enabled scanning device while measuring the number of RSS samples is estimated and used to estimate the quality of estimation of characteristics of the Wi-Fi access point.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: June 7, 2016
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan, Nicolas Brachet
  • Patent number: 9052378
    Abstract: A method for estimating position using WLAN access point radio propagation characteristics in a WLAN location based service is provided. A location-based services system has a plurality of Wi-Fi access points in a target area. The Wi-Fi access points are positioned at geographic locations and have signal coverage areas. A method of characterizing at least one of the Wi-Fi access points comprises determining the geographic location of the Wi-Fi access point, dividing the signal coverage area of the Wi-Fi access point into at least one section, and determining radio propagation characteristics for each section. The radio propagation characteristics of each section characterize a radio channel of the Wi-Fi access point, and the characterization can be used in a location algorithm.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: June 9, 2015
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan
  • Patent number: 9008690
    Abstract: A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: April 14, 2015
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Edward James Morgan, Kaveh Pahlavan
  • Publication number: 20140160963
    Abstract: A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
    Type: Application
    Filed: August 29, 2013
    Publication date: June 12, 2014
    Applicant: Skyhook Wireless, Inc.
    Inventors: Farshid ALIZADEH-SHABDIZ, Edward James MORGAN, Kaveh PAHLAVAN
  • Patent number: 8526967
    Abstract: A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: September 3, 2013
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Edward James Morgan, Kaveh Pahlavan
  • Publication number: 20120196621
    Abstract: A method for estimating position using WLAN access point radio propagation characteristics in a WLAN location based service is provided. A location-based services system has a plurality of Wi-Fi access points in a target area. The Wi-Fi access points are positioned at geographic locations and have signal coverage areas. A method of characterizing at least one of the Wi-Fi access points comprises determining the geographic location of the Wi-Fi access point, dividing the signal coverage area of the Wi-Fi access point into at least one section, and determining radio propagation characteristics for each section. The radio propagation characteristics of each section characterize a radio channel of the Wi-Fi access point, and the characterization can be used in a location algorithm.
    Type: Application
    Filed: April 10, 2012
    Publication date: August 2, 2012
    Applicant: Skyhoock Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan
  • Publication number: 20120100872
    Abstract: A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
    Type: Application
    Filed: December 30, 2011
    Publication date: April 26, 2012
    Applicant: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Edward J. Morgan, Kaveh Pahlavan
  • Patent number: 8155673
    Abstract: A method for estimating position using WLAN access point radio propagation characteristics in a WLAN location based service is provided. A location-based services system has a plurality of Wi-Fi access points in a target area. The Wi-Fi access points are positioned at geographic locations and have signal coverage areas. A method of characterizing at least one of the Wi-Fi access points comprises determining the geographic location of the Wi-Fi access point, dividing the signal coverage area of the Wi-Fi access point into at least one section, and determining radio propagation characteristics for each section. The radio propagation characteristics of each section characterize a radio channel of the Wi-Fi access point, and the characterization can be used in a location algorithm.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: April 10, 2012
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan
  • Patent number: 8103288
    Abstract: A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: January 24, 2012
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan, Edward James Morgan
  • Patent number: 8090386
    Abstract: A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: January 3, 2012
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Edward James Morgan, Kaveh Pahlavan
  • Patent number: 8014788
    Abstract: A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: September 6, 2011
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan, Edward J. Morgan
  • Patent number: 8005486
    Abstract: Methods and systems for configuring ad-hoc networks, especially a self-configuring wireless sensor networks, are described. The network has an initial number of anchors with known positions that broadcast a signal. The signals are received by distributed nodes whose position is not yet known. The nodes rank the received signal based on a Quality of Link (QoL; received signal strength) and compute a Quality of position Estimate (QoE) for the node. The node with the best QoE is elevated to anchor. This process gradually increases the number of available anchors in the network and hence the position accuracy for additional nodes. The system can be used for geolocation of soldiers in the indoor combat, tracking the location of firefighter and other emergency personnel in rescue missions, etc.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: August 23, 2011
    Assignee: Worcester Polytechnic Institute
    Inventors: Kaveh Pahlavan, Nayef Al-Sindi, Bardia Alavi
  • Publication number: 20110164522
    Abstract: A method for estimating position using WLAN access point radio propagation characteristics in a WLAN location based service is provided. A location-based services system has a plurality of Wi-Fi access points in a target area. The Wi-Fi access points are positioned at geographic locations and have signal coverage areas. A method of characterizing at least one of the Wi-Fi access points comprises determining the geographic location of the Wi-Fi access point, dividing the signal coverage area of the Wi-Fi access point into at least one section, and determining radio propagation characteristics for each section. The radio propagation characteristics of each section characterize a radio channel of the Wi-Fi access point, and the characterization can be used in a location algorithm.
    Type: Application
    Filed: March 14, 2011
    Publication date: July 7, 2011
    Applicant: SKYHOOK WIRELESS, INC.
    Inventors: Farshid ALIZADEH-SHABDIZ, Kaveh PAHLAVAN
  • Patent number: 7916661
    Abstract: A method for estimating position using WLAN access point radio propagation characteristics in a WLAN location based service is provided. A location-based services system has a plurality of Wi-Fi access points in a target area. The Wi-Fi access points are positioned at geographic locations and have signal coverage areas. A method of characterizing at least one of the Wi-Fi access points comprises determining the geographic location of the Wi-Fi access point, dividing the signal coverage area of the Wi-Fi access point into at least one section, and determining radio propagation characteristics for each section. The radio propagation characteristics of each section characterize a radio channel of the Wi-Fi access point, and the characterization can be used in a location algorithm.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: March 29, 2011
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan
  • Publication number: 20110058495
    Abstract: A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
    Type: Application
    Filed: November 12, 2010
    Publication date: March 10, 2011
    Applicant: Skyhook Wireless, Inc.
    Inventors: Farshid ALIZADEH-SHABDIZ, Edward J. MORGAN, Kaveh PAHLAVAN
  • Patent number: 7835754
    Abstract: A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: November 16, 2010
    Assignee: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Edward J. Morgan, Kaveh Pahlavan
  • Publication number: 20090252138
    Abstract: A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
    Type: Application
    Filed: June 18, 2009
    Publication date: October 8, 2009
    Applicant: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan, Edward J. Morgan
  • Publication number: 20090175189
    Abstract: Methods and systems for classifying WLAN access points according to the quality of estimation of characteristics of the WLAN access points are provided. The classifications may be used to scale a reference database and quantify an expected error of estimation of the characteristics of the access points. WLAN access points may be classified based on their impact on a user's position, speed of travel, and direction of travel estimation accuracy in a WLAN positioning system. A method for determining a quality of estimation of characteristics of a Wi-Fi access point comprises a Wi-Fi enabled scanning device measuring a number of received signal strength (RSS) samples of the Wi-Fi signal transmitted by the Wi-Fi access point. A total distance traveled by the Wi-Fi enabled scanning device while measuring the number of RSS samples is estimated and used to estimate the quality of estimation of characteristics of the Wi-Fi access point.
    Type: Application
    Filed: March 16, 2009
    Publication date: July 9, 2009
    Applicant: Skyhook Wireless, Inc.
    Inventors: Farshid Alizadeh-Shabdiz, Kaveh Pahlavan, Nicolas Brachet