Patents by Inventor Gengsheng Zhang

Gengsheng Zhang 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).

  • Publication number: 20170295458
    Abstract: Methods for mobility indication of wireless Access Points (APs) are disclosed. An AP may determine mobility indication information, based, in part, on at least one of: configuration information on the AP pertaining to mobility; and/or wireless signal measurements associated with the AP, and/or captured images associated with the AP, and/or sensor measurements associated with the AP. The AP may transmit the mobility indication information for the AP. The mobility indication information may indicate that the AP is mobile and/or characterize the mobility. The mobility indication information may further include a request to remove information associated with the AP from location determination databases, location assistance databases, and/or base station almanacs.
    Type: Application
    Filed: April 11, 2016
    Publication date: October 12, 2017
    Inventors: Weihua Gao, Meghna Agrawal, Gengsheng Zhang, Ju-Yong Do, Sai Pradeep Venkatraman
  • Publication number: 20170280413
    Abstract: A method of determining a location of a base station includes: receiving, at a mobile device from a location server, a base station identifier (BSID) of the base station and two or more candidate locations of the base station; receiving a signal, at the mobile device from the base station identified by the BSID; and selecting, at the mobile device, a particular candidate location from the two or more candidate locations based on a characteristic determined from the signal. A method of identifying an actual location of a base station includes: transmitting, from a location server to a disambiguating mobile device, a base station identifier (BSID) of the base station and two or more candidate locations of the base station; and receiving, at the location server from the disambiguating mobile device, an indication of the actual location of the base station from among the two or more candidate locations.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 28, 2017
    Inventors: Gengsheng ZHANG, Weihua GAO, Dominic Gerard FARMER
  • Publication number: 20170280288
    Abstract: In an embodiment, a given entity obtains a location of at least one terrestrial transmit station of a Synchronized Wireless Transmission Network (SWTN), transmit station calibration information associated with the at least one terrestrial transmit station and a location of a user equipment (UE) that is in wireless communication range with the at least one terrestrial transmit station. The given entity estimates the time calibration value for the UE based on the obtained transmit station location, the determined transmit station calibration information and the determined location of the UE. In another embodiment, a server obtains time calibration values that are estimated for each UE in the population of UEs. The server aggregates the estimated time calibration values based on device model and/or device operation mode, and calculates a representative time calibration value for UEs sharing the device model and/or device operation mode.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 28, 2017
    Inventors: Ju-yong DO, Rayman Wai PON, Gengsheng ZHANG
  • Publication number: 20170280283
    Abstract: Methods and systems for utilizing priority based geofences are disclosed. A mobile device receives, from another device over a wireless network, at least one geofence, each of the at least one geofence having an assigned priority level indicating an importance of the at least one geofence, wherein the assigned priority level is one of a plurality of priority levels and is received from the other device over the wireless network, determines, based on the priority level of the at least one geofence, a geofence breach detection method and an evaluation rate, and monitors a position of the mobile device relative to the at least one geofence at the evaluation rate using the geofence breach detection method.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 28, 2017
    Inventors: Sai Pradeep VENKATRAMAN, Aditya Narain SRIVASTAVA, Gengsheng ZHANG
  • Publication number: 20170272911
    Abstract: A method of associating environmental context with wireless access points is disclosed. In some embodiments, a method on a user equipment may comprise determining at least one environmental context associated with a subset of one or more Access Points (APs) visible to the UE at an estimated location of the UE. The at least one environmental context associated with the subset may be determined based on one or more of wireless measurements by the UE, and/or sensor measurements by the UE. Further, at least one AP cluster may be determined by clustering the subset of the one or more APs visible to the UE based on the at least one environmental context and the estimated location. Environmental context for APs may be crowdsourced and stored and provided to a UE as location assistance information to facilitate location determination and other functions.
    Type: Application
    Filed: March 18, 2016
    Publication date: September 21, 2017
    Inventors: Meghna Agrawal, Sai Pradeep Venkatraman, Gengsheng Zhang, Ju-Yong Do, Weihua Gao
  • Publication number: 20170272900
    Abstract: Methods and systems are disclosed for improving reliability in mobile device positioning. A mobile device generates position data for a device, receives a first access point position reliability state associated with the first access point, determines a reliability of the position data based on the first access point position reliability state and an estimated location of the first access point, determines a threshold reliability requirement of an application associated with the mobile device, compares the reliability of the position data to the threshold reliability requirement of the application, and provides the position data of the device based on the comparison. A network entity determines access point characteristics associated with an access point, generates a position reliability state for the access point, sends the position reliability state to a mobile device, receives position data associated with the mobile device, and determines a trustworthiness of the position data.
    Type: Application
    Filed: March 18, 2016
    Publication date: September 21, 2017
    Inventors: Ju-yong DO, Meghna AGRAWAL, Gengsheng ZHANG
  • Patent number: 9736649
    Abstract: Disclosed herein are techniques for determining a location of an antenna supporting structure. Crowdsourced data associated with antennas that are installed on a same antenna supporting structure but are used for different air interface types and/or data from aerial images can be used, alone or in combination, to more accurately and more efficiently determine the location of the antenna supporting structure and therefore the locations of the antennas on the antenna supporting structure.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: August 15, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ju-Yong Do, Mark Moeglein, Weihua Gao, Gengsheng Zhang
  • Publication number: 20170223660
    Abstract: Techniques for determining a relative Time Calibration (dTcal) value for a mobile device model are disclosed. An example of an apparatus according to the disclosure includes a memory, a receiver configured to receive measurements and a mobile device model information from mobile devices disposed in geographic areas, a processor configured to determine a baseline mobile device model and other mobile devices models based on the measurements, calculate a baseline measurement value based on the measurement values that correspond to the baseline mobile device model, determine difference values based on the baseline measurement value and the other mobile device model measurement values, determine a model specific dTcal value based on the difference values for at least one of the other mobile device models, and store the model specific dTcal value in the memory.
    Type: Application
    Filed: April 14, 2017
    Publication date: August 3, 2017
    Inventors: Gengsheng ZHANG, Rayman Wai PON, Ju-Yong DO
  • Publication number: 20170223659
    Abstract: Techniques for determining a relative Time Calibration (dTcal) value for a mobile device model are disclosed. An example of an apparatus according to the disclosure includes a memory, a receiver configured to receive measurements and a mobile device model information from mobile devices disposed in geographic areas, a processor configured to determine a baseline mobile device model and other mobile devices models based on the measurements, calculate a baseline measurement value based on the measurement values that correspond to the baseline mobile device model, determine difference values based on the baseline measurement value and the other mobile device model measurement values, determine a model specific dTcal value based on the difference values for at least one of the other mobile device models, and store the model specific dTcal value in the memory.
    Type: Application
    Filed: April 14, 2017
    Publication date: August 3, 2017
    Inventors: Gengsheng ZHANG, Rayman Wai PON, Ju-Yong DO
  • Publication number: 20170195836
    Abstract: Techniques for determining a relative Time Calibration (dTcal) value for a mobile device model are disclosed. An example of an apparatus according to the disclosure includes a memory, a receiver configured to receive measurements and a mobile device model information from mobile devices disposed in geographic areas, a processor configured to determine a baseline mobile device model and other mobile devices models based on the measurements, calculate a baseline measurement value based on the measurement values that correspond to the baseline mobile device model, determine difference values based on the baseline measurement value and the other mobile device model measurement values, determine a model specific dTcal value based on the difference values for at least one of the other mobile device models, and store the model specific dTcal value in the memory.
    Type: Application
    Filed: January 4, 2016
    Publication date: July 6, 2017
    Inventors: Gengsheng ZHANG, Rayman Wai PON, Ju-Yong DO
  • Patent number: 9699611
    Abstract: Techniques for determining a relative Time Calibration (dTcal) value for a mobile device model are disclosed. An example of an apparatus according to the disclosure includes a memory, a receiver configured to receive measurements and a mobile device model information from mobile devices disposed in geographic areas, a processor configured to determine a baseline mobile device model and other mobile devices models based on the measurements, calculate a baseline measurement value based on the measurement values that correspond to the baseline mobile device model, determine difference values based on the baseline measurement value and the other mobile device model measurement values, determine a model specific dTcal value based on the difference values for at least one of the other mobile device models, and store the model specific dTcal value in the memory.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: July 4, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Gengsheng Zhang, Rayman Wai Pon, Ju-Yong Do
  • Publication number: 20170094631
    Abstract: Method, device, computer program product, and apparatus to enable mobile device position optimization and reporting are described. Signals provided by a plurality of base transceiver stations (BTS) are received to determine a BTS-based position of the mobile device. A reference position of the mobile device is determined. A range measurement with respect to a target BTS is determined. In one aspect, one or more unreliable BTSs may be detected and reported based on a positioning measurement quality, a range measurement quality, or combinations thereof. In one aspect, the positioning measurement quality is determined based on a difference between the reference position of the mobile device and the BTS-based position of the mobile device. In one aspect, the range measurement quality is determined based on a difference between a measured range/distance and a reference/expected range/distance.
    Type: Application
    Filed: September 25, 2015
    Publication date: March 30, 2017
    Inventors: Rayman Pon, Ju-Yong Do, Gengsheng Zhang
  • Publication number: 20170078851
    Abstract: Example methods, apparatuses, or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate or otherwise support one or more operations or techniques for use in associating (tagging) a signal observation with a location tag, such as, for example, with a mobile communication device.
    Type: Application
    Filed: September 11, 2015
    Publication date: March 16, 2017
    Inventors: Meghna Agrawal, Sai Pradeep Venkatraman, Ashok Bhatia, Gengsheng Zhang
  • Publication number: 20170074972
    Abstract: Disclosed are methods, systems and devices for providing location based services in a venue. To estimate its location, in a particular implementation, a mobile device may obtain a measurement of a range to a transponder device positioned at a known location based on measurements of a signal round-trip time (RTT) in a message exchange with the transponder device. Positioning assistance data from a server may enable the mobile device to measure a delay at the transponder device in providing a response to a probe message to thereby more accurately measure the signal RTT.
    Type: Application
    Filed: November 28, 2016
    Publication date: March 16, 2017
    Inventors: Ju-Yong Do, Gengsheng Zhang, Sundar Raman, Chandrakant Mehta, Arie Rahmat, Lionel Jacques Garin
  • Patent number: 9591604
    Abstract: Disclosed are systems, methods and devices for providing positioning assistance data to a mobile device based, at least in part, on a location context identifier (LCI). In one particular implementation, a user may select from a one or more of candidate LCIs identified, for example, based on acquiring one or more signals from transmitters in range of the mobile device.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: March 7, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Pradeep Venkatraman, Gengsheng Zhang, Marlene Wan
  • Patent number: 9588216
    Abstract: Methods and apparatus for processing positioning assistance data are provided. An exemplary method includes receiving, from a positioning server, virtual access point (VAP) data including a list of unique identifiers, and determining a location of a mobile device by using the VAP. The VAP data indicates that the unique identifiers included on the list identify signals originating from the same physical access point. The unique identifiers can be MAC addresses. In an example, the location determining the can include actively scanning a signal identified by a unique identifier on the list and not actively scanning a different signal identified by a different unique identifier also on the list. Not scanning the other MAC addresses that are on the access point's list and assigned to the mobile device keeps the mobile device from performing duplicative scanning that wastes time, processor cycles, and energy.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: March 7, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ju-yong Do, Gengsheng Zhang, Lionel Jacques Garin, Sai Pradeep Venkatraman, Weiyi Liu, Sundar Raman
  • Publication number: 20170026909
    Abstract: Example methods, apparatuses, or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate or support one or more operations or techniques for selective downloading of one or more positioning tiles using a cache of transmitter parameters, such as for use in or with a mobile communication device, for example.
    Type: Application
    Filed: July 24, 2015
    Publication date: January 26, 2017
    Inventors: Weihua Gao, Gengsheng Zhang, Sundar Raman
  • Patent number: 9547068
    Abstract: Disclosed are methods, systems and devices for providing location based services in a venue. To estimate its location, in a particular implementation, a mobile device may obtain a measurement of a range to a transponder device positioned at a known location based on measurements of a signal round-trip time (RTT) in a message exchange with the transponder device. Positioning assistance data from a server may enable the mobile device to measure a delay at the transponder device in providing a response to a probe message to thereby more accurately measure the signal RTT.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: January 17, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ju-Yong Do, Gengsheng Zhang, Sundar Raman, Chandrakant Mehta, Arie Rahmat, Lionel Jacques Garin
  • Publication number: 20160337813
    Abstract: A method, in a mobile device, of controlling region determination by the mobile device, includes: determining a present pressure at the mobile device; determining, based on the present pressure and a reference pressure, that the mobile device moved from a first region to a second region within a structure, the first region and the second region being different regions of the structure and vertically displaced from each other; and performing region determination in response to determining that the mobile device moved from the first region to the second region.
    Type: Application
    Filed: April 29, 2016
    Publication date: November 17, 2016
    Inventors: Sai Pradeep VENKATRAMAN, Lionel Jacques GARIN, Gengsheng ZHANG
  • Patent number: 9497641
    Abstract: Systems, apparatus and methods for determining a cyclic shift delay (CSD) mode from a plurality of CSD modes is disclosed. A received OFDM signal is converted to a channel impulse response (CIR) signal in the time domain and/or a channel frequency response (CFR) signal in the frequency domain. Matched filters and a comparator are used to determine a most likely current CSD mode. Alternatively, a classifier is used with a number of inputs including outputs from two or more matched filters and one or more outputs from a feature extractor. The feature extractor extracts features in the time domain from the CIR signal and/or in the frequency domain from the CFR signal useful in distinguishing various CSD modes.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: November 15, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Lionel Jacques Garin, Vinay Sridhara, Xiaoxin Zhang, Sundar Raman, Gengsheng Zhang, Bernal A. Arroyo, Carlos Horacio Aldana