Patents by Inventor Hong-Lei Liu

Hong-Lei Liu 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: 9389302
    Abstract: An apparatus and method is provided for real-time location estimation of a mobile station (MS) on a map of roads using non-Global Positioning Satellite location data of the MS and includes a step of determining that the MS is stationary. A next step includes assigning each raw location datum with an initial mass such that the data exhibit an attractive force therebetween. A next step includes calculating a net attractive force for all data using a distance between the data. A next step includes moving each datum a normalized step on the map in response to the net attractive force. A next step includes merging any data that are within a predefined distance on the map and adding their masses. A next step includes repeating the calculating, moving, and merging steps until there are no consecutive merges for a predetermined number of iterations. A next step includes removing any datum with a mass less than a threshold.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: July 12, 2016
    Assignee: Google Technology Holdings LLC
    Inventors: Hong-Lei Liu, Kwok Lam Cheung, Sheng-Yu Hu, XiaoHui Shen
  • Publication number: 20160124072
    Abstract: An apparatus and method is provided for real-time location estimation of a mobile station (MS) on a map of roads using non-Global Positioning Satellite location data of the MS and includes a step of determining that the MS is stationary. A next step includes assigning each raw location datum with an initial mass such that the data exhibit an attractive force therebetween. A next step includes calculating a net attractive force for all data using a distance between the data. A next step includes moving each datum a normalized step on the map in response to the net attractive force. A next step includes merging any data that are within a predefined distance on the map and adding their masses. A next step includes repeating the calculating, moving, and merging steps until there are no consecutive merges for a predetermined number of iterations. A next step includes removing any datum with a mass less than a threshold.
    Type: Application
    Filed: June 24, 2013
    Publication date: May 5, 2016
    Applicant: MOTOROLA MOBILITY LLC
    Inventors: Hong-Lei Liu, Kwok Lam Cheung, Sheng-Yu Hu, XiaoHui Shen
  • Patent number: 8489117
    Abstract: An apparatus and method is provided for real-time location estimation of a mobile station (MS) on a map of roads using non-Global Positioning Satellite location data (300) of the MS and includes a step of determining (302) a mobility of the MS. A next step (306) includes identifying a region that covers all location data. A next step (310) includes dividing the region into smaller blocks, where each block constitutes a Hidden Markov Model state. A next step (312) includes determining a distance between blocks, to be used in a varied continuous probability distribution to determining a state transition probability of each block to represent a likelihood of the MS moving to any one block. A next step (314) includes using a univariate continuous distribution as a function of a distance between each block and a raw location data.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: July 16, 2013
    Assignee: Motorola Mobility LLC
    Inventors: XiaoHui Shen, Hong-Lei Liu, Kwok Lam Cheung, Sheng-Yu Hu
  • Publication number: 20120322460
    Abstract: An apparatus and method is provided for real-time location estimation of a mobile station (MS) on a map of roads using non-Global Positioning Satellite location data (300) of the MS and includes a step of determining (302) a mobility of the MS. A next step (306) includes identifying a region that covers all location data. A next step (310) includes dividing the region into smaller blocks, where each block constitutes a Hidden Markov Model state. A next step (312) includes determining a distance between blocks, to be used in a varied continuous probability distribution to determining a state transition probability of each block to represent a likelihood of the MS moving to any one block. A next step (314) includes using a univariate continuous distribution as a function of a distance between each block and a raw location data.
    Type: Application
    Filed: January 27, 2010
    Publication date: December 20, 2012
    Applicant: MOTOROLA MOBILITY LLC
    Inventors: Hong-Lei Liu, Kwok Lam Cheung, Sheng-Yu Hu, XiaoHui Shen
  • Patent number: 8223692
    Abstract: An infrastructure-based mobility determination module (MDM) receives multiple measurement reports from the MS and, for each received measurement report, stores values corresponding to values included in the report that are associated with measurements of parameters associated with received signals, wherein each stored value is stored in association with a wireless access node sourcing the corresponding signal. For each of one or more pairings of received measurement reports, the MDM then determines a signal parameter measurement change value corresponding to a change from the signal parameter measurement values associated with a first measurement report of the pairing to the signal parameter measurement values associated with a second measurement report of the pairing. Based on the one or more signal parameter measurement change values, the MDM determines an average signal parameter measurement change value and, based on the average signal parameter measurement change value, determines a mobility of the MS.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: July 17, 2012
    Assignee: Motorola Mobility, Inc.
    Inventors: Xiaohui Shen, Sheng-Yu Hu, Hong-Lei Liu, Yinyan Wang
  • Publication number: 20100267397
    Abstract: An infrastructure-based mobililty determination module (MDM) receives multiple measurement reports from the MS and, for each received measurement report, stores values corresponding to values included in the report that are associated with measurements of parameters associated with received signals, wherein each stored value is stored in association with a wireless access node sourcing the corresponding signal. For each of one or more pairings of received measurement reports, the MDM then determines a signal parameter measurement change value corresponding to a change from the signal parameter measurement values associated with a first measurement report of the pairing to the signal parameter measurement values associated with a second measurement report of the pairing. Based on the one or more signal parameter measurement change values, the MDM determines an average signal parameter measurement change value and, based on the average signal parameter measurement change value, determines a mobility of the MS.
    Type: Application
    Filed: May 5, 2009
    Publication date: October 21, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Xiaohui Shen, Sheng-Yue Hu, Hong-Lei Liu, Yinyan Wang