Abstract: 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.

Abstract: 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.

Abstract: The subject matter disclosed herein relates to systems, methods, apparatuses, devices, articles, and means for updating radio models. For certain example implementations, a method for one or more server devices may comprise receiving at one or more communication interfaces at least one measurement that corresponds to a position of a first mobile device within an indoor environment. At least one radio model that is stored in one or more memories may be updated based, at least in part, on the at least one measurement to produce at least one updated radio model. The at least one radio model and the at least one updated radio model may correspond to the indoor environment. The at least one updated radio model may be transmitted to enable a second mobile device to use the at least one updated radio model for positioning within the indoor environment. Other example implementations are described herein.

Abstract: A mobile communication device includes, in part, a first wireless receiver adapted to determine, as it travels along a path, a multitude of positions of the mobile communication device using signals received from a primary positioning source, a second wireless receiver adapted to receive signals from one or more ambient wireless sources as the mobile communication device travels along the path, and a positioning module. An internal or external memory stores estimated positions and corresponding time references of the signals of the one or more ambient sources. The positioning module uses the data stored in the database to estimate the position of the mobile communication device when no primary positioning source signal is available. The positioning module optionally uses the data stored in the database to improve estimates of the position of the mobile communication device when primary positioning signal is available.

Abstract: 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.

Abstract: 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.

Abstract: The subject matter disclosed herein relates to systems, methods, apparatuses, devices, articles, and means for updating radio models. For certain example implementations, a method for one or more server devices may comprise receiving at one or more communication interfaces at least one measurement that corresponds to a position of a first mobile device within an indoor environment. At least one radio model that is stored in one or more memories may be updated based, at least in part, on the at least one measurement to produce at least one updated radio model. The at least one radio model and the at least one updated radio model may correspond to the indoor environment. The at least one updated radio model may be transmitted to enable a second mobile device to use the at least one updated radio model for positioning within the indoor environment. Other example implementations are described herein.

Abstract: The subject matter disclosed herein relates to systems, methods, apparatuses, devices, articles, and means for updating radio models. For certain example implementations, a method for one or more server devices may comprise receiving at one or more communication interfaces at least one measurement that corresponds to a position of a first mobile device within an indoor environment. At least one radio model that is stored in one or more memories may be updated based, at least in part, on the at least one measurement to produce at least one updated radio model. The at least one radio model and the at least one updated radio model may correspond to the indoor environment. The at least one updated radio model may be transmitted to enable a second mobile device to use the at least one updated radio model for positioning within the indoor environment. Other example implementations are described herein.

Abstract: 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 t1, wherein the identification and the signal characteristic of the radio signal of the certain radio transmitter represent at least part of a measurement packet for the position, a processor for post-processing the measurement packet to obtain a post-processed measurement packet for the position wherein the processor for post-processing is implemented to synthesize the signal characteristic of the certain radio transmitter.

Abstract: A method and apparatus are disclosed for determining the position, or change in the position, of a mobile terminal. The terminal has a receiver for receiving the signals from one or more transmission sources at unknown positions and an independent positioning device able to find, when operative, the position of the mobile terminal. The method uses the independent positioning device to measure the position of the mobile terminal at one or more first locations. A respective first set of time or phase offset values of signals received from the transmission sources relative to each other or to a reference in the mobile terminal is measured in the mobile terminal, at each first location.

Abstract: According to an embodiment of the present invention an emitter geolocation technique determines the geolocation of a radio frequency (RF) emitter using pair-wise line-of-bearing intersections that are derived from signal-to-noise ratios of transmitted signals received at a sensor. The technique may be employed with ground based vehicle or small unmanned air vehicles (UAV), and obtains reliable geolocation estimates of radio frequency (RF) emitters of interest.

Abstract: 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.

Abstract: Techniques for provided which may be implemented using various methods and/or apparatuses to allow a mobile device to identify and select certain wireless transmitting devices for use in estimating a location of the mobile device. For example with one method, a mobile device may identify a plurality of wireless transmitting devices from which measurements are obtainable to estimate a location of the mobile device, and select a set of wireless transmitting devices based, at least in part, on a location reliability indicator.

Abstract: According to the invention, the system comprises: at least three position beacons (3) arranged about said location (2) and emitting in the long-wave range, and an apparatus associated with the user (1) and including means for receiving, processing and displaying the information transmitted by said beacons (3).

Abstract: In accordance with various embodiments, mobile wireless devices which use prediction maps, e.g., RF prediction maps, to determine their location also contribute to the updating and distribution of parameters relating to prediction map generation. After a device determines its location, it uses the signal measurements used in determining the device's location to determine updated parameters which can be used in generating signal prediction maps in the future. The generated parameters are then transmitted to another device for use in generating prediction maps and/or distribution to other devices. In this manner parameters corresponding to a particular location can be updated and distributed without the need for a survey team and/or dedicated equipment. The devices using the prediction map become the devices which also aid in the updating of the parameters used to facilitate generation of a prediction map at some future time.

Abstract: Apparatus having corresponding methods and computer-readable media comprise: an input module adapted to receive a plurality of pseudoranges each determined by a receiver based on one of a plurality of wireless single-frequency network (SFN) signals transmitted at a predetermined frequency from a corresponding plurality of transmitters; and a transmitter identification module adapted to identify one of the transmitters for each of the pseudoranges based on the pseudoranges and a plurality of ranges each predetermined between one of the transmitters and one of a plurality of predetermined geographic locations.

Abstract: Apparatus to determine the position of a user terminal, the apparatus having corresponding methods and computer-readable media, comprise: a receiver to receive at the user terminal an American Television Standards Committee Mobile/Handheld (ATSC-M/H) broadcast signal from a ATSC-M/H transmitter; and a pseudorange module to determine a pseudorange between the receiver and the ATSC-M/H transmitter based on the ATSC-M/H) broadcast signal; wherein the position module determines the position of the user terminal based on the pseudorange and a location of the ATSC-M/H transmitter.

Abstract: 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.

Abstract: The subject matter disclosed herein relates to providing assistance information to a mobile station for performing position estimation operations.

Abstract: A wireless positioning apparatus receives a plurality of channel responses for a plurality of locations, generates a plurality of channel response patterns from the plurality of channel responses, and stores the plurality of channel response patterns. The wireless positioning apparatus receives an estimated channel response from a mobile station and compares the estimated channel response with the plurality of channel response patterns to estimate a location of the mobile station. The wireless positioning apparatus provides the estimated location information to the mobile station.

Abstract: Location inference using selected beacons. Data is received representing a set of beacons observed by a computing device. The beacons are located within a first geographic area. A subset (e.g., a clique) of the beacons is selected based on a coverage area of each of the beacons, where each of the beacons in the selected subset has a coverage area that overlaps with the coverage area of each of the other beacons in the selected subset. Using known or estimated positions of the beacons, a second geographic area is defined based on the selected subset of beacons and the beacon reference data and the coverage areas associated therewith. The second geographic area, smaller than the first geographic area, represents an approximate location of the computing device. In some embodiments, the computing device is calculated to be within the second geographic area with 95% probability.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A destination analysis module is described which estimates at least one destination of a user given a partial path taken by the user within a geographic area. The destination analysis module operates by detecting a mode of transportation that a user uses to traverse the path (e.g., automobile, public transportation, walking, etc.). The destination analysis module then loads a model associated with the mode of transportation into a destination prediction module and estimates at least one destination based on the path and the model. The model has various components that depend on the mode of transportation, such as routing network information and prior probability information.

Abstract: Techniques for estimating a location of a portable electronic device are provided. The techniques represent radio scene information detected by a portable electronic device as a vector. The vector may then be used to retrieve similar vectors associated with known locations from a corpus. The known locations may then be used to estimate the location of the portable electronic device.

Abstract: Object localization with an radio-frequency identification (RFID) infrastructure is described. A plurality of transmission power levels established by an RFID reader can be searched to determine a measurement power level corresponding to a target. A region that includes the target can then be determined using information about a physical relationship between the RFID reader and a reference location via correlating the measurement power level to a reference power level corresponding to the reference location.

Abstract: To determine whether a mobile terminal of a communications system has moved outside a locale, the terminal measures relative time offsets of signals received by the terminal from transmitters of the network, relative to each other or a reference. At a first time when the terminal is within a given locale, the time of receipt of signals received by the terminal from a plurality of the transmitters relative to a reference or each other are measured to create a first set of receive time offsets. At a second time, a second set of receive time offsets is measured. Change(s) in receive time offsets is/are calculated, and change(s) between the first and second times in transmission time offsets of the signals transmitted by at least one transmitter is/are obtained to determine movement indicators that are compared with threshold valuets to determine whether the mobile terminal has moved outside the locale.

Abstract: 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.

Abstract: The position detection device for detecting a position of a moving body in a predetermined environment, which includes a reception feature quantity generation unit 41 which obtains, from a base station which is disposed in the environment and receives identification information transmitted by radio communication from a mobile station attached to the moving body and a reference station disposed in each area defined in advance in the environment, the identification information and a reception intensity as of the reception of the identification information to generate a reception feature quantity which correlates the reception intensity related to each of the mobile station and the reference station with the base station, a position reception feature quantity generation unit 43 which generates a reception feature quantity of each area from the reception feature quantity related to the reference station taking into consideration a factor of a difference caused between generated reception feature quantities relate

Abstract: A method and apparatus determines if a location fix received by a mobile station using a non-GPS location techniques is accurate. Location results obtained using the non-GPS location technique or techniques are treated as accurate if they are verified as being within an error margin obtained from a trusted source of location information such as a GPS positioning system. Non-GPS Location information may be obtained from a signal transmitted by the base station, which signal includes the base station location. The non-GPS location information may also be obtained from a backend service associated with the wireless network that includes the base station.

Abstract: A method for enhanced location determination using temporal, spatial and/or frequency diversity. Multiple ranging signal measurements are obtained from each signal source using either temporal, spatial and/or frequency diversity. In one embodiment, the multiple ranging signal measurements are combined using a metric to obtain a single ranging signal measurement. The location determination solution is then calculated using the single ranging signal measurement. In a second embodiment, a location determination solution is calculated for each of the multiple ranging signal measurements to result in multiple location determination solutions. A metric is then used to combine the multiple location determination solutions to result in a single location determination solution.

Abstract: A system for determining a location of a receiver is disclosed. The system includes at least one transmitter transmitting one or more radio signals, respectively. The system also includes a receiver comprising a clock, a memory, and a processor configured to execute computer-executable instructions stored in the memory. The instructions makes the receiver operable to receive the radio signals, capture the radio signals as one or more received signal waveform, respectively, and store the received signal waveforms in the memory. The instructions also make the receiver operable to calculate one or more virtual transmitted waveforms based upon the received signal waveforms, respectively and determine, based upon the received signal waveforms and the virtual transmitted waveforms, a position of the receiver relative to the transmitters.

Abstract: 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.

Abstract: 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.

Abstract: Provided is a location measurement method of a mobile node using a predictive filter is provided for improving the location measurement accuracy of the mobile node. The location measurement method of a mobile node detects change of movement pattern of the mobile node, corrects weights of a location measurement period and a predictive filter depending on the change of movement pattern, and compensates a location of the mobile node using the corrected weights of the location measurement period and predictive filter.

Abstract: Systems and methods are operable to locate an airborne aircraft (108). The method communicates an interrogation signal to an Air Traffic Control Radar Beacon System (ATCRBS) or mode S transponder equipped airborne aircraft (108) and to a plurality of slave ground receivers (104a-104i) from a master ground station (102). Each of the slave ground receivers (104a-104i) receives the interrogation signal from the master ground station (102) and synchronizes its system time with the master ground station (102), respectively. The master ground station (102) and the plurality of slave ground receivers (104a-104i) receive interrogation reply signals (106,110a-110i) from the airborne aircraft (108). The master ground station (102) determines a time of arrival (TOA) of the reply signal at master ground station (102) and respective ones of the TOA of the reply signal received at the slave ground receivers (104a-104i).

Abstract: Systems and methods are disclosed herein for determining a user's location within an indoor environment. In particular, the system receives a location request including a set of radio frequency signal data collected by a mobile device inside of an indoor environment. Using this data set, the system first selects a map from a plurality of maps stored in a map database. The system then processes the data to identify the user's location on the selected map. The system uses yield information associated with the received signals in determining the map that the user is on, the user's location on the map, or both the map and the user's location to filter out transient signals and identify those signals that are reliably indicative of the user's location.

Abstract: The location of a receiver is determined by receiving respective ranging signals from each of a plurality of transmitters at known locations. The ranging signals are cross-correlated with respective model signals to provide respective cross-correlation functions. For cross correlation functions that are determined to include multipath noise, the multipath noise is estimated and removed. Respective delays of the cross-correlation functions are estimated and the location of the receiver is inferred from the delays.

Abstract: A method of determining the location of a mobile device is provided. The method receives a signal with a known radio transmission pattern at the mobile device from each of several transmitting devices. The method correlates each received signal with a corresponding signal that has a same known radio transmission pattern to determine the time the signal traveled between the corresponding transmitting device and the mobile device. The method determines the location of the mobile device based on the time the signal travelled between the corresponding transmitting device and the mobile device. In some embodiments, determining the location of the mobile device does not require calculating a distance between the mobile device and any of the transmitting devices. In some embodiments determining the location of the mobile device includes solving a function that is dependent on the time the signals traveled between each corresponding transmitting device and the mobile device.

Abstract: A near field navigation system is equipped with a base segment provided on a base structure. The base segment includes at least four transmitters. Each transmitter is provided with a base antenna and the base antennas are positioned relative to each other at known distances. A user segment is provided on a user structure, the user segment including at least one receiver, at least one user antenna connected to the receiver, and a processing unit connected to the receiver. The receiver and each of the transmitters together form distance measuring units and the processing unit is adapted to calculate the relative three-dimensional position data of the user structure with respect to the base structure on the basis of distance data obtained from the distance measuring units.

Abstract: A portable terminal is provided, which includes a communication unit that transmits/receives a signal modulated by a predetermined modulation method to/from three or more base stations; a storage unit which stores in advance a plurality of propagation models indicating propagation environments of the signal for respective combinations of the base stations and stores in advance position information of the base stations; and a control unit that controls the communication unit and the storage unit; wherein the control unit specifies a propagation model that corresponds to a combination of the base stations among the plurality of propagation models stored in the storage unit based on the signal and calculates communicable distances of the signal based on the corresponding propagation model, calculates circles having the corresponding communicable distances as their radii and having positions of the base stations as their centers, respectively, obtains an overlapping area where the circles overlap one another, and

Abstract: 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 t1, wherein the identification and the signal characteristic of the radio signal of the certain radio transmitter represent at least part of a measurement packet for the position, a processor for post-processing the measurement packet to obtain a post-processed measurement packet for the position wherein the processor for post-processing is implemented to synthesize the signal characteristic of the certain radio transmitter.

Abstract: Systems and methods for correcting a location of a terminal are provided. In various aspects, a processor in a position correction apparatus may associate a reference position with the terminal, and determine a range for the terminal based on the reference position. The processor may also associate a second position with the terminal, and determine if the second position associated with the terminal is outside the determined range for the terminal based on the reference position. Upon a determination that indicates that the second position is outside the determined range, the processor may correct the second position to a corrected position associated with the terminal.

Abstract: A system and method for effectively performing enhanced device location procedures to determine the current physical location of a mobile device includes a plurality of satellites that wirelessly transmit satellite beacon signals, a plurality of base stations that wirelessly transmit pilot signals, and a plurality of access points that wirelessly transmit access-point beacon signals. A location detector of the mobile device coordinates a device location procedure by measuring the satellite beacon signals, the pilot signals, and the access-point beacon signals to generate corresponding satellite information, base station information, and access point information. The location detector analyzes the satellite information, the base station information, and the access point information to select an optimal system configuration from the most effective satellites, base stations, and access points.

Abstract: Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.

Abstract: Systems, devices, features, and/or methods for determining a location of a mobile device are disclosed. A method may include (a) receiving, into a mobile device, a common RF signal on a common carrier frequency, wherein the common RF signal includes a respective RF signal output by each of three or more transmitters on a common time basis in a round-robin manner, and wherein each of the three or more transmitters is positioned at a known location, (b) capturing data representing the common RF signal, (c) based on the captured data, discriminating between each respective RF signal that forms the received common RF signal, (d) determining a relative phase shift of each respective RF signal, and (e) determining the location of the mobile device based on the determined relative phase shifts and the known locations of the three or more transmitters.

Abstract: 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 ?i, specific to each transmitter. The method comprises at least one step of acquiring the approximate position of the terminal {circumflex over (p)}, the position pi of a list of transmitters {Tx} in the vicinity of the terminal and the delays ?i associated with them, a step of measuring pseudo-distances ?i between the transmitters and the terminal and a step of associating the measurements ?i with the transmitters of known positions pi by minimizing a cost function, said cost function ?(?i,{circumflex over (p)},?) corresponding to the norm of the error between the measurements ?i and a model of measurements of the pseudo-distances applied to a permutation of the position of the transmitters ?.

Abstract: A method of and system for calibrating un-calibrated time information within a mobile terminal 101 is disclosed. The terminal has a receiver 203 capable of receiving signals from which calibrated time information carried by a calibrated system (a satellite positioning system) can be extracted, and a receiver 200 capable of receiving signals from which un-calibrated time information carried by an un-calibrated stable system (a cellular communications system) may be extracted. The time offset between calibrated time information extracted from the calibrated system and un-calibrated time information extracted from the un-calibrated stable system is determined at a first terminal position where the signals from the un-calibrated stable system are available, the travel times of the signals from the un-calibrated stable system are known or determined, and the signals from the calibrated system are available.

Abstract: An apparatus and method for calculating a current position of a portable terminal not supporting a function of obtaining position information, such as a Global Positioning System (GPS) function, by receiving position information from neighbor terminals of the portable terminal are disclosed. The apparatus includes a controller for calculating the current position of the portable terminal from received position information from neighbor terminals and processing the received position to determine the current position.