Class / Patent application number | Description | Number of patent applications / Date published |
342464000 | Plural transmitters only | 31 |
20090002238 | INTER-NETWORK OPERATION OF MULTIPLE LOCATION NETWORKS - The present invention discloses a system and method for allowing a position receiver to determine position solutions from positioning signals from a plurality of autonomous positioning networks, each of which is synchronized to a different timebase. Each of the plurality of autonomous networks comprises one or more positioning-unit device, which is a specialized transceiver capable of receiving and interpreting reference positioning signals from a reference transmitter, a position receiver, another positioning-unit device or all. At least one positioning-unit device within a first autonomous positioning network receives positioning signals from at least one positioning-unit device from a second adjacent autonomous positioning network and measures the timebase difference between the second network and the first network and subsequently calculates a timebase clock correction. The at least one positioning-unit device within the first network incorporates the timebase clock correction into its positioning signals for transmission. Other positioning-unit devices within the first network receive and replay the positioning signals incorporating the timebase clock correction. A position receiver situated near the boundary of two of the plurality of networks receives positioning signals incorporating the timebase clock corrections from any positioning-unit device within the first network and also receives positioning signals from one or more positioning-unit devices from the second network. The position receiver applies the timebase clock correction to the positioning signals received from one or more positioning-unit devices from the second network. The position receiver then calculates its own position using positioning signals from the first network and the second network. Hence, although the positioning signals from the positioning-unit devices from the different networks are synchronized to different timebases, the position receiver is able to use these signals for position solutions. | 01-01-2009 |
20090115663 | SYSTEM AND METHOD FOR DETERMINING LOCATIONS OF MEDICAL DEVICES - The location of a medical device is determined by receiving one or more signals at the medical device transmitted by one or more beacons, respectively, at known locations. The one or more signals received at the medical device are sent from the medical device to a processor, which determines the location of the medical device based on the received one or more signals. One of the beacons may be a portable patient beacon, the location of which is determined when its signal is received by a medical device, the location of which was previously determined. | 05-07-2009 |
20100045531 | HARMONIC BLOCK TECHNIQUE FOR COMPUTING SPACE-TIME SOLUTIONS FOR COMMUNICATION SYSTEM NETWORK NODES - A space-time calibration system and method implement space-time solutions, in which, in one preferred embodiment, a single node determines its own space-time solutions based on other network nodes with which the single node communicates. In other preferred embodiments, space-time solutions for the node can be generated using other resources in the network. The disclosed system and method enable reliable, precise object positioning particularly for environments where the Global Positioning System (GPS) is blocked or subject to interference such as within the urban core. | 02-25-2010 |
20100134356 | INDOOR LOCALIZATION SYSTEM AND METHOD - An indoor localization method is implemented using an indoor localization system that includes beacons in an indoor space and each periodically transmitting a localization signal, a radio badge receiving the localization signals, and a host coupled to the beacons and the radio badge. The beacons transmit the localization signals asynchronously. The indoor localization method includes a training phase and a tracking phase. During the training phase, signal vectors are formed from the localization signals received by the radio badge, and a signal ID value is generated from the signal vectors. During the tracking phase, signal vectors are formed from the localization signals received by the radio badge at a current location. An estimated position of the radio badge is obtained using the signal vectors of the tracking phase and the signal ID values. | 06-03-2010 |
20100201576 | RECEPTION DEVICE - A reception device includes a receiver, a direction detector, a location information acquisition component and a location calculator. The receiver receives broadcast signals sent from transmission towers, respectively. The direction detector detects reception directions of the broadcast signals. The location information acquisition component acquires location information indicating locations where the transmission towers are installed, respectively. The location calculator selects at least three of the transmission towers, estimate at least two estimated areas in which the reception device is located with each of the at least two of the estimated areas being estimated based on the reception directions of the broadcast signals of two of the at least three of the transmission towers and the location information of the two of the at least three of the transmission towers, and calculate a location of the reception device based on the at least two of the estimated areas. | 08-12-2010 |
20100302103 | Method for retrieving a geographical point on the seabed - The invention involves one or more radio markers ( | 12-02-2010 |
20110074635 | METHOD AND APPARATUS FOR POSITIONING - Provides are method and apparatus for wireless positioning. An exemplary embodiment of the present invention provides a method for wireless positioning, which includes: receiving signals from a plurality of transmitters; determining propagation delay tabs of the plurality of transmitters, from the signals received from the plurality of transmitters, respectively; setting the order of the plurality of transmitters in accordance with the propagation delay tabs; measuring distances between a receiver and the transmitter, respectively; and estimating the position of the receiver, by using the order and the measured distance. | 03-31-2011 |
20120044110 | Advanced positioning system - The subject of the invention is a system or a method of determining the position of the radio signal receiver with respect to the radio signal transmission from a single moving transmitter with one or more antennas or from one static transmitter with one or more static or moving antennas. In order to determine the signal receiver position, three or more signals from different positions or points (antennas) of a single signal transmitter are needed. The transmitted signals include information on latitude, longitude and altitude of individual antennas, and the exact time of signal transmission with respect to the time recorded on the transmitter itself. The signal receiver uses the abovementioned information to calculate its own position. The invention eliminates and resolves the limitation of the current state of technique with regard to the use of several transmitters (satellites) and time synchronization between individual transmitters (satellites), since the position can also be determined with the use of a single transmitter or satellite, and there is no need for time synchronization between individual transmitters. | 02-23-2012 |
20120154220 | System and Method for Determining the Location of a Mobile Device - A system and method for determining the location of a mobile device. A first set of signals from a plurality of radio frequency (“RF”) sources may be received at a mobile device and then downconverted into a second set of signals. The mobile device may then time stamp the second set of signals and transmit the time stamped signals to a location determining system. The location of the mobile device may be determined at the location determining system as a function of the time stamped signals. | 06-21-2012 |
20120262341 | METHOD FOR IDENTIFYING TRANSMITTERS BY A TERMINAL IN A SINGLE-FREQUENCY NETWORK - A method for identifying transmitters by a terminal in a single-frequency network comprising a plurality of transmitters. The transmitters are synchronized and transmit with an artificial delay τ | 10-18-2012 |
20120286999 | APPARATUS AND METHOD FOR DETERMINING A CORRESPONDENCE OF A POSITION WITH A REFERENCE POSITION - An apparatus for determining a correspondence of a position with a reference position, wherein radio signals of stationary radio transmitters are receivable at the position, having a determiner for determining an identification of a certain radio transmitter and for determining a signal characteristic of a radio signal of the certain radio transmitter at a first time t | 11-15-2012 |
20130009823 | SYSTEMS AND METHODS FOR SHORT BASELINE, LOW COST DETERMINATION OF AIRBORNE AIRCRAFT LOCATION - Systems and methods are operable to locate an airborne aircraft ( | 01-10-2013 |
20130057436 | CODING IN A WIDE AREA POSITIONING SYSTEM (WAPS) - Embodiments describe determining position by selecting a set of digital pseudorandom sequences. The magnitudes of the cross-correlation between any two sequences of the chosen set are below a specified threshold. A subset of digital pseudorandom sequences are selected from the set such that the magnitudes of the autocorrelation function of each member of the subset, within a specified region adjacent to the peak of the autocorrelation function, are equal to or less than a prescribed value. Each transmitter transmits a positioning signal, and at least a portion of the positioning signal is modulated with at least one member of the subset. At least two transmitters of the plurality of transmitters modulate respective positioning signals with different members of the subset of digital pseudorandom sequences. | 03-07-2013 |
20130141283 | METHOD FOR LOCATING A RADIO CENTER AND SYSTEM FOR LOCATING A RADIO CENTER AND DATA PROCESSING UNIT - The present invention group is related to wireless radio communication and, in particular, to devices and methods for determining the location (position) of a radio center relative to radio centers with known location. A method and a system for locating a radio center are proposed, as well as data processing unit that allows to improve the accuracy of localization by selecting minimum distance values as measured by the radio signal propagation time for the entire period of immobility of the radio center. The technical result consists of the increase of the immunity of the localization method, reducing the duration of measuring period, the possibility of locating radio centers that are heterogeneous in terms of the method being used for determining their motion. | 06-06-2013 |
20130278466 | NAVIGATION TRACK CORRECTION - Methods and systems disclosed herein may include receiving signals along a traveled path over a period of time; recording signal power levels of the received signals over the period of time; receiving a first estimated track of the traveled path; identifying a feature of the received signal power levels, wherein the feature is caused by the signals having traveled different propagation paths; and generating a second estimated track based on the feature and the first estimated track. | 10-24-2013 |
20130285856 | Position and Uncertainty Determination Using Staggered Reception of Position Reference Signals - Arrangements are detailed herein for determining a position and/or uncertainty of position of a mobile device. A plurality of positioning reference signals (PRSs) may be received by a mobile device. The plurality of PRSs may be transmitted at different times, separated by a predefined time interval, by multiple eNBs of a mobile network. Time of arrival values in relation to a received PRS that is used as a reference PRS may be determined. The time of arrival values for at least the subset of the received plurality of PRSs may be projected to the occasion of the reference PRS using the predefined time interval to create a set of projected time of arrival values. | 10-31-2013 |
20130307730 | USING MULTIPLE ACCESS CHANNELS FOR WIRELESS DEVICE POSITIONING - A wireless device performs a transmission on a primary and auxiliary access channels to enable reception by at least three base stations. The base stations perform a measurement on the received transmission, e.g., a time of arrival of the transmission. The base stations report their measurements to a position determination entity. The position determination entity estimates geographic position of the wireless device. One method used by the position determination entity includes tri-lateralization based on the received measurement reports. | 11-21-2013 |
20140070998 | DEVICE AND METHOD FOR RECOGNIZING LOCATION BY CONVERSION OF FREQUENCY OFFSET - Provided is an apparatus and method for recognizing a location by conversion of a frequency offset, the apparatus including a setting unit to receive, from a terminal, a plurality of signals comprising a first signal and a second signal, and to set a variable corresponding to each of the plurality of signals, a detector to detect a first residual phase of a carrier frequency of the first signal and a second residual phase of a carrier frequency of the second signal using the variables, and a recognizer to recognize a location of the terminal by calculating a difference between the first residual phase and the second residual phase. | 03-13-2014 |
20140118193 | Method And Node For Localizing A Node In A Wireless Network - A method for localizing a node in a wireless network, the method including: receiving location signals transmitted by beacons, the location signals including information about the locations of the respective beacons; detecting the respective received signal strengths of the received location signals; obtaining information about the different signal levels at which the beacons can transmit; studying the received location signals; determining the signal levels used by each of the beacons for the transmission of the location signals, based on the studying of the received signals; calculating a distance to each of the beacons based on the detected signal strengths and the determined signal levels; and localizing the node by means of the received location information and the calculated distances. The invention also relates to a node ant to a wireless network. | 05-01-2014 |
20140152507 | RFID AND ROBOTS FOR MULTICHANNEL SHOPPING - The present invention relates to systems, methods, and devices for consumers using RFID-tagged items for multichannel shopping using smartphones, tablets, and indoor navigation, preservation of consumer's privacy related to RFID-tagged items that they leave a retail store with, and automatically reading and locating retail inventory without directly using store labor. Robots and aerial mobile automated RFID reading devices are disclosed. | 06-05-2014 |
20140152508 | RF Confinement System - A system of locating a moveable RFID transceiver, in which the moveable transceiver is capable of sending and receiving TOF (Time of fight) signals, and also includes battery powered base stations suitable for outdoor use, and capable of sending and receiving TOF signals. The system measures the signals to derive time of flight information between the moveable transceiver and the base stations and using this data to calculate the position of the moveable transceiver. The position of the base stations may be fixed using TOF signals before attempting location of the moveable RFID transceiver. The base stations may be solar powered, and can work with a base network of only 2 base stations. | 06-05-2014 |
20140191904 | SYSTEM AND METHOD TO GENERATE THREE-DIMENSIONAL MAPPING OF A TUBULAR COMPONENT LAYOUT - A system and method to generate a three-dimensional mapping of an arrangement of tubular components are described. The tubular components include one or more straight pipes and one or more bent segments connected at interfaces. The system includes a plurality of electronically readable identifiers, each electronically readable identifier being disposed in proximity to one of the interfaces of two of the tubular components and each side of the interface comprising at least one RFID chip. The system also includes a reader to receive a signal from each of the plurality of electronically readable identifiers in turn and a processor to process a position of the reader and each of the signals to generate the three-dimensional mapping. | 07-10-2014 |
20140197991 | SPATIAL RECOGNITION OF RFID TAG PLACEMENT USING ANTENNA MULTIPLEXING - A system to determine the placement of multiple RFID tags uses multiple antennae. The RF communication (or NFC) includes read and/or read/write communication with the RFID tags. | 07-17-2014 |
20140232601 | POSITION ESTIMATION ASSISTANCE INFORMATION FOR MOBILE STATION - The subject matter disclosed herein relates to providing assistance information to a mobile station for performing position estimation operations. | 08-21-2014 |
20140253390 | PASSIVE WIRELESS TRANSMITTER AUTHENTICATION USED FOR RECEIVER LOCATION DETERMINATION - A client device includes an application to request a client device location, and a receiver to receive a signal from a transmitter. The receiver extracts a transmitter identifier (ID) and a wave propagation parameter (WPP) from the signal. A validator validates the extracted transmitter ID based on comparisons of the extracted ID against a list of pre-assigned transmitter IDs. A location calculator computes the client device location based at least in part on the extracted WPP and provides the computed client device location to the application, if the transmitter ID is validated by the validator. | 09-11-2014 |
20140266916 | METHOD AND APPARATUS FOR DETERMINING LOCATIONS OF ACCESS POINTS - Methods and apparatuses for determining locations of a plurality of access points (APs) are presented. In some embodiments, the method includes obtaining measurements from at least 3 measurement points using a mobile device, wherein the locations of the at least 3 measurement points are unknown and are at different locations. The method may also include computing distance measurements from the mobile device to each of the plurality of APs, at each of the at least 3 measurement points, using the measurements, computing a set of mutual distance values in a matrix of mutual distances between each of the plurality of APs, using the distance measurements, and determining the locations of the plurality of APs using the computed matrix of mutual distances, relative to the at least 3 measurement points. | 09-18-2014 |
20140375505 | Positioning Using DTV Broadcast Signaling - For indoor location of a wireless device, use of Digital Television (DTV) signals for receiver location allows for high yield, precise location estimates. The device location is determined based on pseudo-ranges between the device and a plurality of DTV transmitters. The pseudo-ranges are determined based on the known and a priori unknown portions of the DTV signals received by the device and monitor stations. A new Payload Correlation Procedure (payload=unknown DTV data segments) to locate a client device is employed, and a Field Correlation Procedure, which uses only known data segments of the DTV signal, may be used in conjunction with the Payload Correlation Procedure. This approach addresses the problem presented by the limited size of the radio communications link between the Location Server and Client versus the very large bandwidth of multiple DTV channels. | 12-25-2014 |
20150323646 | LOCATION ERROR RADIUS DETERMINATION - A system and method determining an error radius reflecting the accuracy of a calculated position of a processing device is provided. A data structure includes an error radius mapped to a scaled geographic area or “tile” comprising an area in which a calculated position may be determined. The data structure may include a plurality of first fields identifying a scaled geographic area based on a global projection reference system, and a plurality of second fields identifying, for each of the first fields, a position error radius associated with a scaled geographic area and level. For any calculation of an inferred position based on beacon observations, a rapid lookup of the corresponding scaled area including the new inferred position in the data structure returns an error radius for the new inferred position. | 11-12-2015 |
20160097850 | PAIRWISE MEASUREMENTS FOR IMPROVED POSITION DETERMINATION - Approaches for enhancing range-based position determination using pairwise error detection and compensation are provided. One method for enhancing a position estimate of a first node may include performing measurements at the first node using a signal received from a second node, and receiving measurements from the second node. The received measurements may be performed at the second node using a signal provided by the first node. The method may further include determining pairwise comparisons of the performed measurements and the received measurements, and compensating the measurements performed at the first node, based on the pairwise comparisons, for estimating the position of the first node. Systems and apparatuses for performing the various position determination methods are further presented. | 04-07-2016 |
20160154086 | VEHICLE SYSTEM, IN-VEHICLE APPARATUS, AND PORTABLE DEVICE | 06-02-2016 |
20160202343 | LOCATION INFORMATION DETERMINATION SYSTEM | 07-14-2016 |