Patents Assigned to TruePosition, Inc.
  • Patent number: 8442538
    Abstract: For Wireless Communications Networks (WCNs) that support soft handover, cooperator receiver selection for a TDOA, AOA, TDOA/AOA, or hybrid network-based or network-overlay Wireless Location System (WLS) must contend with one or more network base stations as a serving cell. When the active set contains more than one member, two techniques for determining a set of cooperating and demodulating receivers to use in the signal collection for location estimation is disclosed. In one embodiment, the active set members are constructively reduced to a single member that is used as a proxy serving cell. In another embodiment, the information contained in the active set membership is retained and a new set of demodulating and cooperator receivers are generated based on the entire membership of the active set.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: May 14, 2013
    Assignee: TruePosition, Inc.
    Inventors: Edward Joseph Segall, Simon Issakov, Rashidus S. Mia
  • Patent number: 8436768
    Abstract: A Wide Area Sensor Network is disclosed that utilizes wideband software defined radios (SDRs) to provide a capability to monitor the airwaves over a wide frequency range, detect when critical frequencies are being jammed or otherwise interfered with, and locate the source of the interference so that the interference can be eliminated. In addition, a diversity receiver is disclosed. The diversity receiver generates position, time and frequency references for use in locating and synchronizing sensor platforms of a WLS. In an illustrative embodiment, the diversity receiver comprises a first receiver subsystem comprising a terrestrial broadcast receiver, and a common processor platform (CPP) coupled via first link means to the first receiver subsystem. The first receiver subsystem provides a stable time reference and position information to the CPP via the first link means.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: May 7, 2013
    Assignee: TruePosition, Inc.
    Inventors: Jeffrey F. Bull, Benjamin H. Cohen, Adam W. Norgaard
  • Patent number: 8384595
    Abstract: In a wireless location system configured to use a baseline correlation method, an iterative approach to increasing location accuracy is disclosed. The quality of received signals is ordered from highest to lowest and used to calculate an initial location. The initial location is modified using the lower quality signals as constrained by the time and frequency deviation from the initial location and velocity estimate.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: February 26, 2013
    Assignee: TruePosition, Inc.
    Inventors: Rashidus S Mia, Robert J Anderson, Pete A Boyer
  • Publication number: 20130023247
    Abstract: Collection and analysis of network transaction information which includes the mobile device's usage, location, movements coupled with data from non-wireless network sources allow for the automation of analysis for the detection of anti-social or criminal behaviors and tasking of high-accuracy location surveillance.
    Type: Application
    Filed: June 7, 2012
    Publication date: January 24, 2013
    Applicant: TRUEPOSITION, INC.
    Inventors: Brian R. Bolon, Jihad A. Ghabra, Matthew L. Ward
  • Publication number: 20130023286
    Abstract: Disclosed is a method for processing readily available radio network, timing and power information about cellular networks and typical measurements made by the mobile device and network. A probabilistic method is disclosed that uses both time (i.e., range) and power differences with known downlink transmitter antenna characteristics to locate mobiles with accuracy better than cell-ID with ranging, with high capacity, and without the need for field calibration.
    Type: Application
    Filed: September 21, 2012
    Publication date: January 24, 2013
    Applicant: TruePosition, Inc.
    Inventor: TruePosition, Inc.
  • Patent number: 8340218
    Abstract: Disclosed are methods and systems for filtering an intermediate frequency (IF) band when digitizing a radio frequency (RF) signal using a higher Nyquist zone several times above the sampling rate. Undersampling may be employed along with an undersampled Nyquist filtering technique to implement an integrated receiver for base station applications such as wireless base station beacon monitoring. Such a receiver may be integrated into a smaller package and consume less power at a reduced cost. In one embodiment, the receiver may operate at a high RF sampled frequency that is microsampled in the 10th Nyquist zone at less than 20% undersampling. In another embodiment, the receiver may operate in the 5th Nyquist zone at ½ the sampling rate with 40% undersampling. In various embodiments, sampling and processing functions may be implemented using software on a computer or other embedded computing device.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: December 25, 2012
    Assignee: TruePosition, Inc.
    Inventor: William J. Drennen, III
  • Patent number: 8340630
    Abstract: A method for use in providing emergency services to a locator device comprises remotely triggering the locator device. This causes the locator device to employ a first wireless transceiver to communicate with a control center and to employ a second wireless transceiver to initiate an emergency services call to a public services answering point (PSAP). Information relating to the locator device is provided from the control center to the PASP using a backchannel communications channel.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: December 25, 2012
    Assignee: TruePosition, Inc.
    Inventor: Matthew L. Ward
  • Patent number: 8331955
    Abstract: A wireless location system is configured to operate in a CDMA-based wireless communication network. In exemplary embodiments, location measuring units (LMUs) can synchronize to sectors of base stations and store sector timing information. In response to a request to geo-locate a mobile device communicating with a sector, sector timing information for the servicing sector is sent to other LMUs and the LMUs can use the sector timing information to detect uplink signals transmitted by the mobile device. The location of the mobile device can then be estimated based on time of arrival measurements made by the LMUs.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: December 11, 2012
    Assignee: TruePosition, Inc.
    Inventors: Jeffrey F. Bull, Robert J. Anderson
  • Publication number: 20120309341
    Abstract: A method for use in providing emergency services to a locator device comprises remotely triggering the locator device. This causes the locator device to employ a first wireless transceiver to communicate with a control center and to employ a second wireless transceiver to initiate an emergency services call to a public services answering point (PSAP). Information relating to the locator device is provided from the control center to the PASP using a backchannel communications channel.
    Type: Application
    Filed: June 2, 2011
    Publication date: December 6, 2012
    Applicant: TRUEPOSITION, INC.
    Inventor: Matthew L. Ward
  • Patent number: 8320931
    Abstract: Method and systems are employed by a wireless location system (WLS) for locating a wireless device operating in a geographic area served by a wireless communications system. An exemplary method includes defining a geo-fenced area. The method then includes monitoring a set of predefined signaling links of the wireless communications system, and detecting that a mobile device has performed any of the following acts with respect to the geo-fenced area: (1) entered the geo-fenced area, (2) exited the geo-fenced area, and (3) come within a predefined degree of proximity near the geo-fenced area. A high-accuracy location function may then be triggered in order to determine the geographic location of the mobile device.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: November 27, 2012
    Assignee: TruePosition, Inc.
    Inventors: Matthew L. Ward, Paul M Czarnecki, Robert J. Anderson
  • Patent number: 8315647
    Abstract: Disclosed is a method for processing readily available radio network, timing and power information about cellular networks and typical measurements made by the mobile device and network. A probabilistic method is disclosed that uses both time (i.e., range) and power differences with known downlink transmitter antenna characteristics to locate mobiles with accuracy better than cell-ID with ranging, with high capacity, and without the need for field calibration.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: November 20, 2012
    Assignee: TruePosition, Inc.
    Inventors: Pitchaiah Soma, Jeffrey F. Bull, Rashidus S. Mia, Pete A. Boyer
  • Patent number: 8290496
    Abstract: For Wireless Communications Networks (WCNs) that support soft handover, cooperator receiver selection for a TDOA, AOA, TDOA/AOA, or hybrid network-based or network-overlay Wireless Location System (WLS) must contend with one or more network base stations as a serving cell. When the active set contains more than one member, two techniques for determining a set of cooperating and demodulating receivers to use in the signal collection for location estimation is disclosed. In one embodiment, the active set members are constructively reduced to a single member that is used as a proxy serving cell. In another embodiment, the information contained in the active set membership is retained and a new set of demodulating and cooperator receivers are generated based on the entire membership of the active set.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: October 16, 2012
    Assignee: TruePosition, Inc.
    Inventors: Edward Joseph Segall, Simon Issakov, Rashidus S. Mia
  • Patent number: 8242959
    Abstract: In an overlay, U-TDOA-based, Wireless Location System, LMUs typically co-located with BTSs, are used to collect radio signaling both in the forward and reverse channels. Techniques are used to compensate for sparse LMU deployments where sections of the U-TDOA service area are uplink demodulation or downlink beacon discovery limited.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: August 14, 2012
    Assignee: TruePosition, Inc.
    Inventors: Rashidus S. Mia, Robert J. Anderson
  • Publication number: 20120194382
    Abstract: To reduce power consumption in a user terminal, especially mobile devices, a system and method are introduced that use terrestrial beacons as a location proxy when satellite positioning signals are not available. The geographic locations of the terrestrial beacons need not be known to use the beacons as a proxy for a satellite positioning signals derived location.
    Type: Application
    Filed: April 4, 2012
    Publication date: August 2, 2012
    Applicant: TRUEPOSITION, INC.
    Inventors: Robert J. Anderson, Matthew L. Ward
  • Patent number: 8233091
    Abstract: Methods having corresponding apparatus and computer-readable media comprise: receiving television signals and a message at an apparatus, wherein the television signals include an NTSC television signal and an ATSC television signal, wherein the message represents first and second arrival times representing absolute times of arrival at the apparatus of a first wavefront of the NTSC and ATSC television signals, respectively; measuring third and fourth arrival times, based on a local clock, after receiving the message, wherein the third and fourth arrival times represent times of arrival at the apparatus of a second wavefront of the NTSC and ATSC television signals, respectively; and providing a clock correction signal for the local clock based on the first arrival time, the second arrival time, the third arrival time, and the fourth arrival time.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: July 31, 2012
    Assignee: TruePosition, Inc.
    Inventors: Matthew Rabinowitz, James J. Spilker, Jr., Scott Furman, Dimitri Rubin, Harvind Samra, David Burgess, Guttorm Opshaug, Jim Omura
  • Patent number: 8224348
    Abstract: Collection and analysis of network transaction information which includes the mobile device's usage, location, movements coupled with data from non-wireless network sources allow for the automation of analysis for the detection of anti-social behaviors.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: July 17, 2012
    Assignee: TruePosition, Inc.
    Inventors: Brian R. Bolon, Jeffrey F. Bull, Matthew L. Ward
  • Patent number: 8213957
    Abstract: A Network Autonomous Wireless Location System (NAWLS) is designed to allow for precise location of a mobile device (e.g., a cell phone) without interconnection to, and with minimal disruption of, the local wireless communications network. Using distributed radio network monitors (RNM) and a managed network emulator (NE); mobile devices are sampled, acquired or captured. Once triggered by the RNM or NE, an untethered wireless location system (U-WLS) is used to calculate a precise location. The U-WLS; comprising mobile receiver sites, each capable of self location, exchanging information with other components of the NAWLS, and receiving or exchanging signals from the mobile device; utilizes various network-based and handset-based wireless location techniques dependent on the deployed options. In addition, the NAWLS includes data links interconnecting the U-WLS, NE and RNM.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: July 3, 2012
    Assignee: TruePosition, Inc.
    Inventors: Jeffrey F. Bull, Matthew L. Ward
  • Publication number: 20120165038
    Abstract: Disclosed is a method for processing readily available radio network, timing and power information about cellular networks and typical measurements made by the mobile device and network. A probabilistic method is disclosed that uses both time (i.e., range) and power differences with known downlink transmitter antenna characteristics to locate mobiles with accuracy better than cell-ID with ranging, with high capacity, and without the need for field calibration.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 28, 2012
    Applicant: TruePosition, INC.
    Inventors: Pitchaiah Soma, Jeffrey F. Bull, Rashidus S. Mia, Pete A. Boyer
  • Publication number: 20120167207
    Abstract: A location sentry system is provided for use within a mobile device. The sentry system can be configured to detect unauthorized attempts to locate mobile devices by monitoring messages passed between the mobile device and the wireless network and/or messages passed between components of the mobile device, and determining that one or more of the messages is/are indicative of an attempt to locate the mobile device. In response to a determination that an unauthorized attempt has been detected, the location sentry can be configured to take one or more actions. For example, the location sentry system could prevent location information from being sent back to the wireless network and/or the location sentry system could cause incorrect information to be sent to the wireless network.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 28, 2012
    Applicant: TRUEPOSITION, INC.
    Inventors: Frederic A. Beckley, Robert J. Anderson, Matthew L. Ward
  • Publication number: 20120165037
    Abstract: A wireless location system is configured to operate in a CDMA-based wireless communication network. In exemplary embodiments, location measuring units (LMUs) can synchronize to sectors of base stations and store sector timing information. In response to a request to geo-locate a mobile device communicating with a sector, sector timing information for the servicing sector is sent to other LMUs and the LMUs can use the sector timing information to detect uplink signals transmitted by the mobile device. The location of the mobile device can then be estimated based on time of arrival measurements made by the LMUs.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 28, 2012
    Applicant: TRUEPOSITION, INC.
    Inventors: Jeffrey F. Bull, Robert J. Anderson