A method of operating an elevator call control system comprising: receiving a first elevator call from a first individual carrying a first mobile device, the first elevator call including a destination request to travel from a first boarding floor to a first destination floor; determining that the first individual carrying the first mobile device is traveling with a second individual, wherein the second individual is traveling to a second destination floor; assigning an elevator car to the first elevator call; and scheduling the elevator car to transport the first individual carrying the first mobile device and the second individual together to at least one of a first destination floor and the second destination floor.

Disclosed herein are systems and methods related to a wireless tracking system: The wireless tracking system having a plurality of beacons, each of the plurality of beacons having at least one antenna and at least one power source. When the at least one antenna is supplied with power via the power source, a local ping is transmitted from the beacon. A wireless tracking device then receives the ping via its own antenna. Once the wireless tracking device has received a locational ping from at least two of the plurality of beacons, it can then calculate a direct connection path between the at least to beacons. Based on this known path, the wireless tracking device can then determine a distance between the wireless tracking device and connection path. Based on the determined distance, the wireless tracking device may then issue a corrective measure.

A method is provided for estimating at least one characteristic of a signal received by a receiver, the signal having been transmitted in succession by a plurality of antennas in successive time segments, each segment being dedicated to one separate antenna, the signal being modulated into the form of pulses according to ultra-wideband modulation. The method includes steps of: receiving and digitizing the signal, computing the product of multiplication of each symbol of the received signal by the complex conjugate of the corresponding transmitted symbol, for each segment and for each symbol of the signal received for this segment, estimating a phase error by means of a phase-locked loop applied to the product, for each segment, determining a reference phase by means of a linear regression applied to the phase errors estimated for all of the segments, determining, for at least one pair of antennas, a phase difference between the signals transmitted by the antennas of the pair, on the basis of the difference between the reference phases computed for the segments associated with the antennas.

A communication device for estimating the azimuth angle includes a receiving module and an estimating module. The receiving module is configured to sequentially switch several azimuth angles to receive a first signal transmitted at the first transmitting angle from a first transmitting module of the first communication device. The estimation module is configured to calculate several signal powers of the first signal received by the receiving module at the several azimuth angles; to determine the maximum signal power among the several signal powers; to determine the pre-judged AOD according to the azimuth angle of the maximum signal; and to calculate the AOD of the associated first signal based on the pre-judged AOD and at least one azimuth angle adjacent to the pre-judged AOD among the several azimuth angles.

An ultra-wideband (“UWB”) communication system comprising a transmitter having two transmit antennas and a receiver having a single receive antenna. Respective selected portions of the UWB signal are transmitted by the transmitter via each of transmit antennas is received at the receive antenna. By comparing the phases of the received signal portions, the phase difference of departure can be determined. From this phase difference and the known distance, d, between the transmit antennas, the Cartesian (x, y) location of the transmitter relative to the receiver can be directly determined.

An electronic apparatus, and a corresponding wireless communication method and computer-readable medium, where the electronic apparatus for wireless communication includes a processing circuit which is configured to: determine a first position range of a user equipment on the basis of first measurement information from the user equipment and regarding first beam scanning; when the first position range is lower than a predetermined accuracy requirement, determine adjustment of a beam configuration on the basis of the first position range; and determine a second position range of the user equipment on the basis of second measurement information from the user equipment and regarding second beam scanning performed by means of the adjusted beam configuration.

Determining a location of a user equipment includes transmitting, by one or more processors from a network node, a first beam having a first frequency range in a first area and a second beam having a second frequency range in a second area. The first area is larger than and encompasses the second area. A request for determining the location of the user equipment is received. The one or more processors may then cause the second beam to sweep within the first area, receive a second signal from the user equipment indicating when the second beam is swept over the location of the user equipment and data related to signal measurements of the second beam at the user equipment, and determine the location of the user equipment based on a pointing direction of the second beam relative to a position of the node of the network and the received data.

Systems and methods are provided for worker protection system with ultra-wideband (UWB) based anchors. One or more wayside units placed on or near a track may be configured to form a work zone network, based on ultra-wideband (UWB) communications, corresponding to a work zone in an area surrounding or in proximity to the one or more wayside units. When the work zone network is formed, at least one wayside unit of the one or more wayside units may be configured to obtain ranging information to a train traversing the track, based on communications of UWB signals with at least one train-mounted unit deployed on the train, and the one or more wayside units are configured to generate, based on the ranging information, notifications relating to the train and/or the work zone.

A UE includes: a transceiver configured to receive positioning signals from a positioning-signal source; a memory; and a processor communicatively coupled to the transceiver and the memory, the processor configured to: measure a plurality of the positioning signals, from a plurality of ports, spanning a collection of Orthogonal Frequency Division Multiplexed symbols to obtain a plurality of multi-port measurements; determine, based on the plurality of multi-port measurements, that a particular effective beam corresponds to an earliest time of arrival from the positioning-signal source to the UE of a plurality of effective beams associated with the plurality of ports; and send, via the transceiver to a first network entity, abeam indication indicative of the particular effective beam.

A method for user localization in a cellular network includes receiving, by a receiver unit, Orthogonal Time Frequency Space (OTFS) modulated Constant-Amplitude-Zero-Autocorrelation (CAZAC) sequences generated and transmitted in a Doppler-delay domain by a transmitter unit. The method further includes estimating, by the receiver unit, Doppler shift and/or relative speed between the transmitter unit and the receiver unit by filtering the received OTFS modulated CAZAC sequences.