The present invention relates to a method and an apparatus for displaying and guiding an optimum beam display. The present invention can be applied to a 5G communication and Internet of Things (IoT) related technology-based intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, security and safety related services, etc.). A method for controlling a terminal according to an embodiment of the present invention may comprise the steps for: determining whether a center beam having the best antenna gain among a plurality of beams of a terminal is identical to a currently used beam of the terminal; calculating an angle between the currently used beam and the center beam of the terminal if the currently used beam and the center beam of the terminal are not identical; and outputting information indicating an optimum beam direction according to the angle between the currently used beam and the center beam of the terminal.

Disclosed in this specification is a method comprising inserting an anti-whitened data portion into a data packet that is to be whitened by whitening to yield a whitened data packet for transmission (44) from a first radio communications apparatus (30) to a second radio communications apparatus (10), the anti-whitened data portion having been determined based on anti-whitening data received (43) from the second radio communications apparatus (10) at the first radio communications apparatus, wherein the anti-whitened data portion is obtainable from a specific data block by anti-whitening, the anti-whitening compensating for the whitening so that the whitened data packet comprises the specific data block in non-whitened form.

Disclosed in this specification is a method comprising inserting an anti-whitened data portion into a data packet that is to be whitened by whitening to yield a whitened data packet for transmission (44) from a first radio communications apparatus (30) to a second radio communications apparatus (10), the anti-whitened data portion having been determined based on anti-whitening data received (43) from the second radio communications apparatus (10) at the first radio communications apparatus, wherein the anti-whitened data portion is obtainable from a specific data block by anti-whitening, the anti-whitening compensating for the whitening so that the whitened data packet comprises the specific data block in non-whitened form.

Disclosed are techniques for wireless positioning. In an aspect, a wireless device receives one or more radio frequency (RF) signals from a transmitter device, displays a first arrow and a second arrow on a user interface of the wireless device, a direction of the first arrow representing a first angle-of-arrival (AoA) estimate of the one or more RF signals, and a direction of the second arrow representing a mirror AoA estimate of the first AoA estimate, and displays one or more notifications on the user interface instructing a user of the wireless device to move the wireless device until the direction of the first arrow is aligned with the direction of the second arrow.

Disclosed are techniques for wireless positioning. In an aspect, a wireless device receives one or more radio frequency (RF) signals from a transmitter device, displays a first arrow and a second arrow on a user interface of the wireless device, a direction of the first arrow representing a first angle-of-arrival (AoA) estimate of the one or more RF signals, and a direction of the second arrow representing a mirror AoA estimate of the first AoA estimate, and displays one or more notifications on the user interface instructing a user of the wireless device to move the wireless device until the direction of the first arrow is aligned with the direction of the second arrow.

A direction detection device for detecting a received-wave arrival direction of a received wave, and includes: antennas for receiving the received wave; an intensity difference imparting unit that imparts intensity differences different depending on the received-wave arrival direction to intensities of the received wave; a storage unit that stores an intensity difference table in which the intensity difference between two of the antennas is associated with the received-wave arrival direction, for each combination of any two of the antennas; a detector that detects the intensity difference between the two antennas of the received wave; an extractor that extracts, from the intensity difference table, received-wave arrival directions corresponding to the intensity difference detected by the detector, for each combination; and a comparator that compares the received-wave arrival directions extracted by the extractor between the combinations of the antennas to acquire a matched received-wave arrival direction as a detection result.

There is provided mechanisms for orientation determination of a wireless device with respect to a first coordinate system. A method is performed by a control unit. The method comprises obtaining first angular measurements of the wireless device at a first access node and second angular measurements of the first access node at the wireless device. The first access node is oriented in the first coordinate system. The wireless device is oriented in a second coordinate system. The method comprises determining, by aligning the second angular measurements with the first angular measurements, an amount of rotation of the second coordinate system with respect to the first coordinate system. The orientation of the wireless device with respect to the first coordinate system is defined by the amount of the rotation.

Disclosed herein are related to a system and a method for determining an Angle of Approach (AoA) of a device. A first device may receive a report from a second device having a plurality of ultra-wideband (UWB) devices. The report may include a plurality of values comprising an elevation component and an azimuth component of the AoA from the first device. At least some of the plurality of values may be obtained according to measurements between the plurality of UWB devices of the second devices and the at least one UWB device of the first device. The first device may determine an AoA from the second device, using the plurality of values from the report received from the second device.

A method for operating a transmit-receive point (TRP) includes generating a different spatial domain to time domain transform (STT) symbol for each antenna element in an antenna array, and transmitting the STT symbols using the antenna array to sweep a beam along a first plane in the time domain.

A method for operating a transmit-receive point (TRP) includes generating a different spatial domain to time domain transform (STT) symbol for each antenna element in an antenna array, and transmitting the STT symbols using the antenna array to sweep a beam along a first plane in the time domain.