Patent application number | Description | Published |
20080200184 | METHOD FOR ANGLE OF ARRIVAL DETERMINATION ON FREQUENCY HOPPING AIR INTERFACES - A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in response to one or more calibration signals injected into the system at one or more of the frequencies in the hopping sequence and proximate in time to reception of the communication signal. The calibration coefficients are reflective of a frequency and time dependent parameter of a path between the antenna and wireless location sensor. The AOA is determined as a function of the calibration coefficient and the radio frequency energy of the received communication signal. Several embodiment of the method are illustrated. | 08-21-2008 |
20080238777 | SYSTEM AND METHOD FOR ENHANCIN THE ACCURACY OF A LOCATION ESTIMATE - A method for enabling a system to enhance the accuracy of a location estimate modifies weights in a weight matrix associated with receiver station measurements in parallel with successive refinements of the location estimate. In a typical location estimation scenario, several receiving stations simultaneously derive measurements of a signal from the emitter. Any one of these measurements is in general some function of the emitter location and the receiving station location. The aggregate of these measurements is often in excess of the minimum number of measurements required to provide an estimate of the emitter location. Where such an excess exists, the method proceeds by modifying the weights associated with the measurements in parallel with successive refinements of the location estimate. The method can be implemented over various cellular protocols with a consistent and significant enhancement in the accuracy of location estimates. | 10-02-2008 |
20090186632 | SYSTEM AND METHOD OF OPERATION FOR NETWORK OVERLAY GEOLOCATION SYSEM WITH REPEATERS - A novel system and method for a network overlay geolocation system operating in a host wireless communication system with repeaters is disclosed. Embodiments of the novel system and method enable the geolocation system to determine if signals being received by the geolocation system arrive directly from a target mobile appliance or if the signals are passing through a repeater and therefore are subject to a known time delay. Embodiments of the novel system and method provide a more accurate geolocation of mobiles served by repeater stations than capable in the prior art. | 07-23-2009 |
20100130225 | System and method for multiple range estimation location - A system and method of determining the location of a mobile station by determining the time of transmission of a signal by a mobile station and determining range rings at a plurality of reference stations receiving the transmitted signal, where the range rings represent the distance f the mobile station from the plurality of reference stations. | 05-27-2010 |
20100178929 | Network Overlay Geo-Location System with Smart Antennas and Method of Operation - A system and method in a wireless communication system having plural base stations ( | 07-15-2010 |
20110034122 | System and Method of Operation For Network Overlay Geolocation System With Repeaters - A novel system and method for a network overlay geolocation system operating in a host wireless communication system with repeaters is disclosed. Embodiments of the novel system and method enable wireless communication system to determine if signals being received by system receivers arrive directly from a target mobile appliance or if the signals are passing through a repeater. The system's determination may be based at least in part on the TA of the signal, the power of the received signal, the power of the transmitted signal, the hearability of the signal at system receivers, the hearability of system transmitters at the mobile and the known delays associated with the repeaters. Embodiments of the novel system and method provide a more accurate geolocation of mobiles served by repeater stations than capable in the prior art. | 02-10-2011 |
20110170444 | SYSTEM AND METHOD FOR MULTIPLE RANGE ESTIMATION LOCATION - A system and method of determining the location of a mobile station by determining the time of transmission of a signal by a mobile station and determining range rings at a plurality of reference stations receiving the transmitted signal, where the range rings represent the distance of the mobile station from the plurality of reference stations. | 07-14-2011 |
20110171912 | System and Method for Mobile Location By Proximity Detection - A system and method for determining the location of a mobile device in a communications network having one or more proximity sensors. A request to locate the mobile device may be received and at least one of the proximity sensors tasked to receive a signal transmission from the mobile device. One or more signal characteristics of the signal transmission from the mobile device may be measured by each tasked proximity sensor, and a location of the mobile device determined as a function of the measured characteristics. This may be accomplished by associating a fixed location with each tasked proximity sensor, and then determining the location of the mobile device as a function of one of the associated fixed locations. | 07-14-2011 |
20110171973 | System and Method for Mobile Location By Proximity Detection - A system and method for determining a location of a mobile device operating in a wireless communications network having an assisted global positioning system (A-GPS) positioning determining entity (PDE). A location request may be received for the mobile device. The location of the mobile device may be determined as a cell identification location if no location results are received from either the A-GPS PDE or a proximity detection system PDE, or the location of the mobile device may be determined as a location result from the A-GPS PDE if the A-GPS PDE provides a location result having a lower uncertainty than a location result from the proximity detection system PDE, or the location of the mobile device may be determined as a location result from the proximity detection system PDE if the proximity detection system PDE provides a location result having a lower uncertainty than a location result from the A-GPS PDE. | 07-14-2011 |
20120094688 | System and Method for Network Timing Recovery in Communications Networks - A system and method is disclosed for determining the network timing of a communications network from one or more mobile stations that receive signals from a plurality of base stations. An estimated location of a mobile station may be determined through any number of or combination of location technologies. Network timing relationships may be determined as a function of the estimated location and network measurements. An estimated location of a second or third mobile station may be determined as a function of the network timing relationships. A geolocation of a second or third mobile station operating on a band that is different than the band on which a first mobile station operates, may be determined from a network timing relationship determined using the first mobile station. | 04-19-2012 |
20120142375 | System and Method for Multiple Range Estimation Location - A system and method of determining the location of a mobile station by determining the time of transmission of a signal by a mobile station and determining range rings at a plurality of reference stations receiving the transmitted signal, where the range rings represent the distance of the mobile station from the plurality of reference stations. | 06-07-2012 |
20120149390 | System and Method for Total Flight Time Ratio Pattern Matching - A method and system for estimating the location of a mobile device. A range of the mobile device to a reference station may be determined as a function of the time of transmission of a first signal transmitted from a base station and as a function of the time of receipt of a second signal transmitted from the mobile device to the reference station, the second signal being a function of the first signal advanced by a timing parameter. A relationship for each of a plurality of grid points in a geographic region may be determined as a function of the determined range and a range metric. These plural grid points may contain the reference station. The determined relationship may be compared with data corresponding to each of the plural grid points, and a location of the mobile device determined as a function of the comparison. | 06-14-2012 |
20120208553 | System and Method for Mobile Location By Dynamic Clustering - A system and method for determining the location of a mobile device in a communications network. A set of network measurement reports (NMR) may be provided for a region in the network. NMRs in the first set may be clustered as a function of observed measurement information in the NMRs. A candidate NMR for a mobile device may be received, and the candidate NMR may then be associated with a selected cluster of NMRs. The candidate NMR and a second set of NMRs may then be clustered, and a location of the mobile device determined as a function of the clustered candidate NMR and second set of NMRs, where the NMRs in the second set are associated with the selected cluster. | 08-16-2012 |
20120315048 | MOBILE LOCATION IN A REMOTE RADIO HEAD ENVIRONMENT - A base station includes an antenna, a radio transceiver, an optical splitter, an optical-to-electrical converter, and a computation module. The antenna may be mounted to a tower and may be configured to receive an RF signal. The radio transceiver may be coupled to the antenna and mounted near the top of the tower. The transceiver may be configured to convert the RF signal to a baseband signal for transmission over a fiber optic link as a first optical signal. The splitter may be configured to split the first optical signal, received via the fiber optic link, into a second optical signal and a third optical signal. The optical-to-electrical converter may be configured to convert the second optical signal into an electrical digital signal including in-phase and quadrature (I/Q) data. The computation module may be configured to compute, based on the I/Q data, signal measurements for location of a mobile station. | 12-13-2012 |
20140004881 | System and Method for Mobile Location By Dynamic Clustering | 01-02-2014 |
20140198684 | Interceptor System for Characterizing Digital Data in Telecommunication System - Certain aspects are directed to an interceptor system for characterizing digital data communicated between certain points in a telecommunication system. The interceptor system includes an interface device and a processing device. The interface device can retrieve data from at least one communication link between a radio frequency processing unit and a baseband processing unit of a telecommunication system. The data includes digital data communicated between the radio frequency processing unit and the baseband processing unit. The processing device can determine an interface link protocol for communicating with terminal equipment via the telecommunication system. The interface link protocol can be determined based on an organization of the data retrieved from the communication link. | 07-17-2014 |