Abstract: A system for detecting angle-of-arrival (AoA) includes a first device and at least one second device. The first device transmits a Bluetooth (BT) packet, and the second device receives the BT packet and determines an AoA of the BT packet. The second device includes a first radio-frequency (RF) antenna to receive a first RF signal and a second RF antenna to receive a second RF signal. The second device also includes a first BT core and a second BT-core and a processing circuit. The first BT core is coupled to the first RF antenna and is used to generate a first signal based on the first RF signal. The second BT core is coupled to the second RF antenna and generates a second signal based on the second RF signal. The processing circuit measures a phase difference between the first signal and the second signal and determines the AoA based on the phase difference.

Abstract: A method and apparatus for locating a beacon in physical space, where the beacon communicates with at least one of a plurality of gateways in the physical space. First signals are transmitted between gateways located at respective physical locations. Gateway-to-gateway measurements of power related to the first signals are stored. The gateway-to-gateway measurements are averaged to obtain averaged gateway-to-gateway measurements. Second signals are transmitted between a beacon and one or more of the gateways. Beacon-to-gateway measurements of power related to the second signals are stored. The beacon-to-gateway measurements are averaged to obtain averaged beacon-to-gateway measurements. First distances between the beacon and the gateways are calculated based on the averaged gateway-to-gateway measurements and the averaged beacon-to-gateway measurements.

Abstract: A position estimation device configured to update and output current position data using GPS position data sequentially input from a GPS module includes: a first data update unit configured to compare the current position data with the GPS position data newly acquired, to determine whether there is a change therebetween beyond a variation range of the GPS position data, and to update the current position data with that GPS position data upon determining that there is a change beyond predetermined variation range; and a second data update unit configured to acquire a detection result from a movement detection sensor configured to detect presence or absence of a movement including vibration of the position estimation device, to determine whether a movement of the position estimation device has been detected, and to update the current position data with the GPS position data newly acquired upon determining that the movement has been detected.

Abstract: A terminal position is determined with differential Global Navigation Satellite System (DGNSS) using GNSS signals from a plurality of satellite vehicles and differential corrections generated by a reference station for the GNSS signals and broadcast via a DGNSS server. The use of the differential corrections for positioning is interrupted when the determined terminal position does not improve with use of the differential corrections. The differential corrections may be interrupted for a period of time so that the terminal no longer receives the broadcast of the differential corrections or so that the differential corrections are not used for position estimation in order to reduce power consumption and reduce processing operations. The DGNSS capabilities of the terminal, such as the supported GNSS constellations and/or frequency bands, may be used by the DGNSS server to select differential corrections to broadcast to the terminal.

Abstract: A wireless transmit/receive unit (WTRU) and a method are described herein regarding preservation of positioning integrity associated with wireless systems. Using multiple positioning configurations and/or schemes (e.g., positioning reference signal (PRS) configurations/schemes), e.g., based on a switching pattern, may ensure integrity (e.g., adequate and/or robust integrity), for example, if error events (e.g., low reference signal received power, blockage of PRS from transmission/reception points (TRPs), etc.) have a persistent duration.

Abstract: Global Navigation Satellite System (GNSS) interference detection may be provided. A satellite tracking table for a first Access Point (AP) may be created. The satellite tracking table may include a listing of a plurality of satellites of a Global Navigation Satellite System (GNSS) available for the first AP and expected satellite parameters for each of the plurality of satellites. A derived satellite parameter may be determined from a received GNSS signal. The derived satellite parameter may be compared with an corresponding expected satellite parameter. The corresponding expected satellite parameter may be determined from the satellite tracking table. An interference event may be determined when the derived satellite parameter differs from the corresponding expected satellite parameter by at least a predetermined amount.

Abstract: An electronic device includes a memory storing computer-executable instructions and at least one processor that accesses the memory and executes the instructions. The at least one processor filters received global navigational satellite system (GNSS) signals to identify valid satellites, based on receiving the GNSS signals, obtains a digital map of a predetermined target area around a reference position, identifies candidate satellites from the valid satellites, based on coordinates obtained by projecting positions of the valid satellites and the reference position in a first direction and the digital map, in a 3D space including the positions of the valid satellites and the reference position, and identifies at least one target satellite meeting a line of sight (LOS) at the reference position, based on coordinates obtained by projecting positions of the candidate satellites and the reference position in a second direction and the digital map.

Abstract: This application discloses a wearable device and a method for controlling the wearable device. The wearable device includes a wearable body, a wearable band, a first antenna module and a second antenna module, where the wearable body is connected to the wearable band; the first antenna module is disposed on the wearable body, and the second antenna module is disposed on the wearable band; and a phase difference between the first antenna module and the second antenna module is adjustable, so that a directivity pattern of an antenna array is adjustable, where the antenna array includes the first antenna module and the second antenna module; and the first antenna module is an active antenna module, and the second antenna module is a passive antenna module.

Abstract: A method of mitigating multipath interference in a global navigation satellite system (GNSS) includes receiving GNSS signals from a plurality of space vehicles emitting at least L5 and L1/L2 band signals, determining, for each L5 and L1 and/or L2 signal, a pseudo-range based on the signal, and determining a residual for each L5 and L1 and/or L2 signal from each space vehicle, wherein the residual is the difference between the range of the space vehicle to the position predicted based on data from a previous time period and the pseudo-range. The method further includes determining a statistic based a comparison between residuals of the L1 and/or L2 signals and the residuals of the L5 signals. If the statistic is above a predetermined threshold, the overall position is determined based on a subset of the signals, the subset comprising the L5 signals and wherein at least one of the L1 and/or L2 signals are excluded from the subset.

Abstract: A method includes obtaining, at a location management apparatus of a wireless communications system, information indicating an approximate location of a user device; determining network assistance signaling based on the obtained information of the approximate location of a user device; and sending the determined network assistance signaling to a first network apparatus of the wireless communications system, the determining of the network assistance signaling including determining an expected angle of arrival for the first network apparatus and including the expected angle of arrival in the network assistance signaling, the expected angle of arrival being an angle, or a range of angles, corresponding to a direction from which wireless transmissions from the user device arrive at the first network apparatus.

Abstract: An example method for determining a confidence value for an estimated parameter in a wireless positioning system includes receiving a signal comprising a number of signal samples, pre-processing each sample of the number of signal samples and therefrom providing a number of pre-processed samples, and calculating a first confidence value. The method further includes performing a pre-estimation of a parameter and providing a pre-estimated parameter, calculating a second confidence value for the pre-estimated parameter, performing a final estimation of the parameter and providing the estimated parameter, and calculating a third confidence value for the estimated parameter. The method includes combining at least two of the first, second and third confidence value and providing the confidence value for the estimated parameter. The confidence value is configured to be used in determining a position of at least one mobile device based on the estimated parameter.

Abstract: A state of a device is tracked based on transmissions from a global navigation satellite system (GNSS) by executing multiple probabilistic estimators concurrently tracking the state of the device using at least two measurement models of different size connecting the GNSS measurement data with the state of the device. One estimator tracks the state of the device based on a first measurement model using the code measurements. Another estimator tracks the state of the device based on a second measurement model using the GNSS measurement data masked by a binary mask blocking a subset of GNSS measurement data of a subset of the satellite signals based on values of coefficients of the binary mask. The number of measurements in the first measurement model is smaller than the number of measurements in the second measurement model.

Abstract: Techniques are discussed herein for transmission of location information by a user equipment (UE) to other UEs. A UE receives Satellite Positioning System (SPS) signals and determines whether the SPS signals are reliable. The UE determines a location estimate to be transmitted to other UEs using the SPS signals if the SPS signals are determined to be reliable and using non-SPS information if the SPS signals are determined to be not reliable. The location information is transmitted to other UEs in a message that includes an indication of the source of information used to generate the location estimate. A UE that receives the message may determine its location estimate based, at least in part, on the indication of the source of information, e.g., by determining whether SPS signals are reliable based, at least in part, on the indication of the source of information received in the message.

Abstract: A method for detecting a probe signal at an estimated code delay and an estimated doppler frequency includes: (i) dividing a period of the probe signal into sections each of a predetermined duration; (ii) assigning to each section one of a multiple code categories, each code category being indicative of a signal pattern of the probe signal within the section; and (iii) selecting multiple phase categories for a sinusoidal signal, each phase category being indicative of a range of phases in the sinusoidal signal.

Abstract: A method (900) by a user equipment, UE, (112) for determining the validity of Global navigation satellite system, GNSS, data, includes maintaining (902) at least one validity timer for determining whether the GNSS data is valid or not valid.

Abstract: A system and method for detection of GNSS signal spoofing with high integrity error bounding determines a parity space formulation for coordinates of a GNSS-driven master position solution (e.g., fully absolute/GNSS or blended GNSS/IRS solution) and a corresponding coasted position solution (e.g., less frequently GNSS-updated), wherein a parity vector expresses consistency of the master coordinate with the coasted coordinate. Based on a desired level of missed detection, protection levels are determined for the parity space formulation, and integrity bounds on the master and coasted solutions calculated. The parity vector is compared with a detection threshold. If, for any solution component (e.g., direction, axis) of the master solution, the parity vector meets or exceeds the threshold, a spoofer is detected and a coasted solution is propagated with its coasted integrity bound. If no spoofer is detected, the master solution and its master integrity bound are propagated as output.

Abstract: A method for one-sided radio-based distance measurement. The object is to speed up the determination of the distance between a first object and a second object, to enable greater accuracy and/or to enable or improve the determination, even in the event of interference, particularly in the case of one-sided and/or asymmetric interference in the radio connection. The method is carried out largely without radio signals in a transmission direction. The method includes use of a transit time measurement between the first object and the second object to eliminate the ambiguity of the distance measurement; the distance measurement being carried out on the basis of a change in the phase shift, in particular relative to the frequency change, of the signal propagation from the first object to the second object as a result of a frequency change.

Abstract: A locating system determines the position of an object with an ultra-wideband mobile unit. The locating system includes UWB anchors configured to locate the object; and a communication radio network having a data network connection component. The data network connection component is configured for parallel transmission of data streams of the UWB anchors.

Abstract: A method for position estimation in a positioning system includes receiving, by locator devices, positioning signals from a mobile device, generating positioning information with associated synchronization identifiers based on the respective received positioning signals, and providing the positioning information with the associated synchronization identifiers to a positioning engine. The positioning engine compiles a set of related positioning information selected from the provided positioning information based on a similarity measure of the associated synchronization identifiers, and determines an estimated position of the mobile device based on the set of related positioning information.

Abstract: A navigation method based on satellite positioning data and non-satellite positioning data includes the following steps of: computing a first reference navigation that is hybridised on the basis of non-satellite positioning data and satellite positioning data, the first reference navigation being reset on the satellite positioning data; performing a statistical analysis of the positional corrections provided by the first reference navigation and deducing therefrom the existence or the absence of a deception operation of the satellite signal receiver. A navigation system for implementing this method is disclosed.