Abstract: A fine-tuning holder for a low-earth-orbit-satellite array antenna has a supporting mount, an adjusting unit, and a tray. The supporting mount has a fixed axis. The adjusting unit is disposed on the supporting mount and is rotated relative to the supporting mount about a first rotating axis being inclined relative to the fixed axis. The tray is disposed on the adjusting unit and is rotated relative to the adjusting unit about a second rotating axis being inclined relative to the first rotating axis. When terrains of a mounting position are rugged, rotate the adjusting unit about the first rotating axis for aligning the tray with the horizon, and rotate the tray about the second rotating axis to adjust the azimuth angle of the tray. The low-earth-orbit-satellite array antenna can be directly aligned and have maximum efficiency when mounted on the tray.

Abstract: Disclosed is an operation method of an electronic apparatus assigning power based on a position of a terminal, the method including receiving data transmission requests from a first terrestrial terminal and a second terrestrial terminal, wherein the first terrestrial terminal and the second terrestrial terminal use overlapped frequency resources, and assigning a first transmission power intensity to the first terrestrial terminal and assigning a second transmission power intensity to the second terrestrial terminal based on a position of the first terrestrial terminal and a position of the second terrestrial terminal.

Abstract: A communication method, a communications apparatus, a device, and a communications system. The method includes: a terminal device receives, by using a first beam, broadcast signals broadcast by N network devices, where each broadcast signal includes a current broadcast moment and identification information of a network device that broadcasts the broadcast signal, and N is a positive integer; the terminal device obtains a second beam corresponding to the broadcast signals, where a width of the first beam is greater than that of the second beam; the terminal device measures the broadcast signals of the N network devices by using the second beam corresponding to the broadcast signal; the terminal device obtains, based on a measurement result, a second beam corresponding to a target network device, where the target network device is one of the N network devices.

Abstract: In one embodiment of the present disclosure, a satellite communication system includes a satellite constellation including a plurality of satellites in non-geosynchronous orbit (non-GEO), wherein at least some of the plurality of satellites travel in a first orbital path at a first inclination, and an end point terminal having an earth-based geographic location, the end point terminal having an antenna system defining a field of regard for communicating with the satellite constellation, wherein the field of regard is a limited field of regard, wherein the field of regard is tilted from a non-tilted position to a tilted position, and wherein the tilt angle of the tilted position is a function of the latitude of the geographic location.

Abstract: An in-home relay device according to various embodiments may comprise: a housing; an antenna provided in the housing; an antenna alignment unit including a motor and/or circuitry for changing the position of the antenna so as to change the radiation direction of the antenna; a processor operatively connected to the antenna and the antenna alignment unit; and a communication unit including communication circuitry electrically connected to the processor and configured to wirelessly connect to external electronic devices, wherein the processor may be configured to: control the antenna alignment unit based on the quality of signals transmitted or received through the antenna to secure a line of sight (LOS) between the antenna and a repeater.

Abstract: A metrology system measures an amount of displacement of a structure of apparatus including primary mirror, the apparatus including primary mirror including a primary mirror portion including a primary mirror and a primary mirror supporting portion, an elevation axis structural body supporting the primary mirror portion, and being rotatable around an elevation axis, an azimuth mount being rotatable around an azimuth axis allowing an azimuth angle in the orientation direction to be changed, and to support the elevation axis structural body, and a pedestal portion supporting the azimuth mount, and the metrology system includes an elevation axis base portion provided along the elevation axis, passing through a position where the elevation axis and the azimuth axis intersect, and being fixed to the azimuth mount, and an inclinometer that is disposed at a position of the elevation axis base portion through which the azimuth axis passes and measures an inclination angle.

Abstract: Disclosed are an OTA test method for a vehicle antenna system, a device and a storage medium. According to the method, the radio frequency performance of a physical layer of a whole vehicle antenna system can be tested, and the problem in the prior art that the test result of parts cannot accurately reflect the performance of the whole vehicle antenna system can be solved.

Abstract: A transmission method is performed by a transmitter including antenna elements.

Abstract: It is provided a system comprising a lock device and a key device for use in access control to a physical space. The key device comprises: an electronic key module configured to communicate with an electronic lock module of the lock device for access control; and a permanent magnet configured to close a magnetically controllable switch of the lock device to thereby power an electronic lock module of the lock device. The lock device comprises: the electronic lock module configured to communicate with the electronic key module to evaluate whether to grant access; a power source; and the magnetically controllable switch provided between the power source and the electronic lock module such that the magnetically controllable switch is closable by the permanent magnet of the key device to power the electronic lock module.

Abstract: A transmit power control method of a first station in a wireless LAN (WLAN) system includes: receiving path loss information from an (access point) AP, the path loss information containing a maximum value among path losses between the AP and at least one or more stations included in the WLAN system; controlling a transmit power by using the path loss information; and transmitting a frame according to the controlled transmit power. In said controlling the transmit power by using the path loss information, the transmit power is controlled by using a path loss obtained by adding the maximum value and a path loss between the first station and the AP or by using the path loss between the first station and the AP.

Abstract: An electronic apparatus and method for retransmission of signals using unmanned aerial vehicles (UAV) is disclosed. The electronic apparatus includes a controller to control a movement of a UAV to a location within a signal coverage area associated with a remote transmitter. The electronic apparatus further includes receiver circuitry disposed on the UAV to receive a first signal from the remote transmitter. The first signal corresponds to a first wireless communication standard. The electronic apparatus further includes a signal processor to process the first signal to obtain a second signal and transmission circuitry to control one or more antennas disposed on the UAV to transmit a beam of the second signal to an electronic device that includes one or more receivers. The second signal corresponds to a second wireless communication standard which is same as or different from the first wireless communication standard.

Abstract: A multi-band signal communications system includes a hub station communicating with multiple remote stations. The system reduces or eliminates the effects of precipitation, airborne pollutants, dust and debris. Signals can comprise digital or analog signals, which can be encrypted. The system can utilize binary digital or quantum computing technologies. The system can utilize frequency-hopping and satellite-hopping routines for security. System components can be fabricated from silicone-based semiconductors and graphene. System functions can be implemented with hardware, firmware and software. The communications system and method can be implemented with fiber-optic cables, laser transmissions and microwave-frequency media.

Abstract: A system and method for selecting antenna panels for communicating with satellites. The receive panels directed towards a location in the sky where the satellite is expected to be. When the signal from the satellite is received by the panels, parameters of the signals are checked against a threshold. All the panels having the parameters above the threshold are grouped together as a receive group. The parameters of the signals at the receive groups are compared to determine the best receive panel, and the transmit panel associate with the receive panel is selected as the transmit panel.

Abstract: Systems, methods, and non-transitory computer-readable media are provided for implementing a tracking camera system onboard an autonomous vehicle. Coordinate data of an object can be received. The tracking camera system actuates, based on the coordinate data, to a position such that the object is in view of the tracking camera system. Vehicle operation data of the autonomous vehicle can be received. The position of the tracking camera system can be adjusted, based on the vehicle operation data, such that the object remains in view of the tracking camera system while the autonomous vehicle is in motion. A focus of the tracking camera system can be adjusted to bring the object in focus. The tracking camera system captures image data corresponding to the object.

Abstract: A system that passively scans for electromagnetic radiation across a potentially wide area and wide spectrum to identify objects in the area based on their emission spectra. The system may use antennas that can be aimed to sweep across a large range of azimuth and elevation angles, and frequency selectors that measure signals in a large set of frequency bands. To make scanning this large space feasible, the system uses recursive adaptive scanning, which scans at progressively finer grid spacings only in areas where signal intensities in each frequency band are changing rapidly. Preliminary scans may be made to measure background noise levels in each frequency and direction, again using recursive adaptive scanning, and this noise may be subtracted during scans for objects of interest. Objects may be identified by finding spikes in any of the frequency bands and matching them to a database of known object signatures.

Abstract: In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are independently adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals of various polarizations are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements, with the transmitted beams having various polarizations. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously.

Abstract: A re-multiplexing apparatus, a broadcasting system, a re-multiplexing method, and a program capable of, when broadcast data having a first resolution and broadcast data having a second resolution are broadcasted, synchronizing their outputs with each other are provided. A re-multiplexing apparatus includes a first re-multiplexing unit and a second re-multiplexing unit. The second re-multiplexing unit inserts a delay control packet at a timing corresponding to a timing of a first packet of an OFDM frame, the delay control packet being a packet containing control information for compensating for a difference between delay times of the first and second lines. When doing so, the second re-multiplexing unit generates, as the control information, an index value of a waiting time from a time when the delay control packet is received in a transmitting apparatus to a start of a modulation process for a packet following the delay control packet.

Abstract: A communication system that includes a first optical node at a first location in a defined indoor area and a second optical node at a second location, where each of the first optical node and the second optical node comprises one or more first type of sensors. The first optical node establishes RF supervisory link with second optical node and performs a first optical alignment with the second optical node based on sensor measurements from the one or more first type of sensors. The sensor measurements are exchanged between the first optical node and the second optical node over the established RF supervisory link for the first optical alignment. The first optical node performs a second optical alignment with the second optical node and establishes a free-space optical link as a laser backhaul with the second optical node based on the first optical alignment and the second optical alignment.

Abstract: A method performed by a beam management system that obtains spatial and temporal measurements of a mobile terminal and geolocation information of an associated base station on a wireless communication network. The system determines a phase compensation value for the mobile terminal based on the obtained information, which is used to calculate or select coefficients for antenna elements that form an optimal antenna beam. Thus, the system can perform beam switching quickly and efficiently based on predicted spatial or temporal characteristics of the mobile terminal without needing to wait for actual beam measurements.

Abstract: A positioning device or a speed measuring device includes: a satellite information acquisition portion that acquires satellite information including information related to a position of multiple satellites and information related to a distance between each of the multiple satellites and a mobile body or a relative speed with the multiple satellites; an attitude detection portion that detects an attitude of the mobile body; a relationship calculation portion that calculates a positional relationship or a speed relationship between an installation location of each of the multiple satellite antennas on the earth and a positioning target location; and a calculation portion that calculates a position of the positioning target location on the earth or a speed at the positioning target location.

Abstract: A vehicle wireless communication device includes: an electric wave transmission portion that has a function of transmitting an electric wave; an electric wave reception portion that has a function of receiving an electric wave; a positioning portion that has a positioning function; a temperature acquisition portion that acquires a temperature of the vehicle wireless communication device; and a function controller that represses multiple functions or restitutes a repressed function.

Abstract: A whole-airspace satellite search method and device based on a phased array antenna are provided. The present disclosure combines electronic scanning implemented by the phased array antenna with mechanical scanning implemented by a mechanical actuator. As for low-orbit satellite communication, the present disclosure achieves rapid search and aiming through the phased array antenna, and solves the problem of limited electronic scanning angle of the phased array antenna through a servo system of the mechanical actuator. On the other hand, the present disclosure supports whole-airspace search and aiming of high, medium, and low-orbit satellites through the combination of the electronic scanning implemented by the phased array antenna and the mechanical scanning implemented by the mechanical actuator.

Abstract: An example method for estimating the angle-of-arrival (AoA) and other parameters of radio frequency (RF) signals that are received by an antenna array comprises: receiving a plurality of radio frequency (RF) signal power measurements by a plurality of antenna elements at a plurality of RF channels; computing, by applying a machine learning model to the plurality of RF signal power measurements, an estimated RF signal parameter value; and outputting the RF signal parameter value.

Abstract: A satellite tracking system and method, a three-point peaking technique is used to determine the direction of a satellite 50 which includes a signal source. A Kalman filter is used to minimize the effects of noise in the received signal during the three-point peaking operation. This determination may be made at any time. Once the position of a satellite 50 has been determined twice over a time interval, its future position may be estimated by an adaptive continuous step track technique, using a Kalman filter, which assumes that the satellite moves uniformly with time as viewed from the antenna.

Abstract: In one embodiment of the present disclosure, a device for detecting a zone of communication between a user terminal and a satellite constellation including a plurality of satellites in non-geosynchronous (non-GEO) orbit includes one or more processors and memory. The memory stores instructions that, as a result of being executed by the one or more processors, cause the device to: determine a location of the device, wherein the location corresponds to a field of regard for detecting the zone of communication, and wherein the field of regard corresponds to an antenna aperture of the phased array antenna; evaluate a level of communication between the phased array antenna and the satellite constellation associated with the field of regard; and output, to a user of the device, an indication of the level of communication between the phased array antenna and the satellite constellation associated with the field of regard.

Abstract: A system and method enabling the automated installation and configuration of satellite system premises device. The system and method provide for tuning, locking and recognizing particular types of satellite system signals, and then responsively configuring and installing a premises device. The disclosed technology is capable of adapting to both one and two cable satellite premises systems, and is compatible with wideband low-noise block signals, as well as universal low-noise block and single-cable second-generation satellite signals.

Abstract: A system and method for selecting antenna panels for communicating with satellites. The receive panels directed towards a location in the sky where the satellite is expected to be. When the signal from the satellite is received by the panels, parameters of the signals are checked against a threshold. All the panels having the parameters above the threshold are grouped together as a receive group. The parameters of the signals at the receive groups are compared to determine the best receive panel, and the transmit panel associate with the receive panel is selected as the transmit panel.

Abstract: A method and a spherical field of view gimbal system (“gimbal system”) are provided, comprising: a suspension arm having a first terminal and a second terminal; a first gimbal arm connected to the suspension arm; a second L-shaped gimbal arm connected to the gimbal arm; and a third L-shaped gimbal arm connected to the first gimbal arm; and controller circuit configured to measure the errors in rotational angles and adjust the rotations of the second L-shaped gimbal arm and second L-shaped gimbal arm accordingly.

Abstract: A measuring circuit is provided including a reception strength acquisition unit (114) that acquires reception strengths of received signals received from respective transmitting stations by an antenna (102) having a predetermined directivity; a direction component information acquisition unit (112) that acquires azimuth angle information and elevation angle information, obtained from each of the received signals with respect to a position of the antenna (102) used as a reference, of the each of the transmitting stations; a pattern generation unit (120) that maps a three-dimensional vector of the azimuth angle information, the elevation angle information, and the reception strength of each of the received signals to a virtual three-dimensional space with the antenna (102) being an origin to generate a first reception strength pattern; and a comparison unit (128) that compares the generated first reception strength pattern with a second reception strength pattern that is a known reception strength pattern to ac

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an apparatus of a user equipment (UE) may transmit a power headroom (PHR) parameter. The PHR parameter may be based at least in part on a beam being associated with a grating lobe and a main lobe. A power of the grating lobe may be within a power threshold of a power of the main lobe. The apparatus may perform a communication using the beam based at least in part on the PHR parameter. Numerous other aspects are described.

Abstract: Systems and methods for space-based transactions are disclosed. A method for conducting a space-based transaction may include: (1) a first space-based device determining that it is incapable or will be incapable of providing the service; (2) the first space-based device identifying a second space-based device; (3) the first space-based device requesting capability information for the second space-based device; (4) the first space-based device that the second space-based device is capable of providing the service based on the capability information; and (5) the first space-based device executing a transaction with the second space-based device, wherein the first space-based device pays the second space-based device for the service by transferring payment from an electronic wallet for the first space-based device to an electronic wallet for the second space-based device on the distributed ledger network, and the second space-based device provides the service to the user.

Abstract: A configurable radio frequency device includes a surface and a plurality of configurable radio frequency elements disposed on the surface. The radio frequency elements can be configured to absorb, reflect, or pass a radio transmission. A controller is configured to control the configuration of the surface by setting the state of the radio frequency elements. The controller also determines a deployment configuration for the surface by applying a series of test configurations to the surface and receiving a measurement of signal quality as measured by a receiver. The controller can then use these measurements to determine how to set the states of the radio frequency elements for the deployment configuration.

Abstract: In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are independently adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals of various polarizations are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements, with the transmitted beams having various polarizations. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously.

Abstract: An antenna includes: at least three radio frequency interfaces and a feed network, where each of the radio frequency interfaces is connected to a radio frequency channel between the radio frequency interface and a RRU. A first interface is configured to receive a signal from the RRU, and transmit the signal to a second interface by using the feed network. The second interface is configured to send the signal to the RRU. The feed network includes a main feed circuit, a calibration signal circuit, and a switch. The calibration signal circuit is configured to transmit a calibration signal from the first interface to the second interface, where the calibration signal is used to calibrate a phase and an amplitude of the radio frequency channel connected to the first interface. The switch is configured to isolate the calibration signal from a signal on the main feed circuit.

Abstract: According to an embodiment there is provided a method for managing wireless communication between a sending wireless device and a receiving wireless device in a wireless network, the method comprising the sending wireless device: transmitting to the receiving wireless device one or more uplink communications using a first transmission setting; determining whether a link quality of the communication link falls outside of a predefined range; and in response to determining that the link quality falls outside of the predefined range: determining at least first and second probing transmission settings that differ from each other and from the first transmission setting; transmitting a first probing transmission using the first probing transmission setting and a second probing transmission using the second probing transmission setting; receiving from the receiving wireless device a selection of one of the first and second probing transmission settings; and adopting the selected probing transmission setting for use w

Abstract: Measurement arrangement and method for measuring an electromagnetic field. It is for this purpose that a measurement probe is arranged on a mechanical probe positioning structure and moved along a number of one or more circular tracks. In this way, the measurement probe can be subsequently located at multiple different spatial positions and the corresponding electromagnetic signal can be measured. Accordingly, properties of an electromagnetic field can be determined by taking into account the measured electromagnetic signal with respect to the related spatial position.

Abstract: A wireless laser power transfer system includes, in part, a transmitter and a receiver that form a wireless link. The transmitter, includes, in part, a first communication system, at least a first source of laser beam, and a controller adapted to vary power and direction of the laser beam and further to modulate the laser beam. The receiver includes, in part, a communication system adapted to establish a wireless link with the first communication system, at least a first photo-voltaic cell, and a controller adapted to demodulate and detect the power of the modulated laser beam received by the first photo-voltaic cell from the first source of laser beam. The system optionally includes at least a second source of laser beam controlled by the transmitter controller. The system optionally further includes a second photo-voltaic cell. The transmitter controller is further adapted to cause the second laser beam to strike the second photo-voltaic cell.

Abstract: A wireless communication device includes: a first antenna configured to provide a first gain pattern at a millimeter-wave radio frequency and having a first boresight direction; a second antenna configured to provide a second gain pattern at the millimeter-wave radio frequency and having a second boresight direction that is different from the first boresight direction; and an electrically-conductive device; where the first antenna, in combination with the electrically-conductive device, is configured to provide a third gain pattern that has a first gain differential relative to the second gain pattern that is greater than a second gain differential between the first gain pattern and the second gain pattern over a range of angles relative to the wireless communication device.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, information associated with identifying a communication diversity configuration. The UE may receive, from the base station, a transport block on a downlink in accordance with the communication diversity configuration. Numerous other aspects are provided.

Abstract: Disclosed are systems and methods for improving the quality and strength of a wireless signal connecting a mobile station and a base station, in situations where the mobile station is able to utilize a directional antenna. The system for improving system quality comprise, for example, a directional antenna; an antenna power level detector which detects a signal strength; a signal inverter wherein the signal inverter generates a conditioned signal from the detected signal strength; an indicator wherein the indicator provides an indicator of a signal quality level from the detected signal strength; a reorientation decision logic wherein the reorientation decision logic communicates an instruction for movement of the directional antenna, wherein the detected signal strength is correlated to a projected orientation of the directional antenna at a time the signal strength is detected, and further wherein an antenna orientation control loop communicates a reorientation instruction for the directional antenna.

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may communicate with a base station via a first connection and with a second UE via a sidelink connection. The base station may transmit, to the first UE, configuration information including information for one or more relay connections, such as a relay connection between the first UE and the base station via the second UE using the sidelink connection. The first UE may activate (e.g., based on an indication from the base station) the relay connection(s) according to the configuration information. The first UE, the second UE, and the base station may communicate on the relay connection(s) according to the configuration information. In some examples, the base station may transmit, to a UE, configuration information and/or an activation indication for multiple relay connections, where each respective relay connection may be separately configured, activated, or deactivated.

Abstract: A wireless transmit/receive unit (WTRU) may identify a plurality of candidate satellite constellations. The WTRU may determine an elevation angle and/or an orbit associated with each of the plurality of candidate satellite constellations. The WTRU may select a satellite constellation from the plurality of candidate constellations for sell selection. The WTRU may identify a plurality of candidate beams associated with the selected satellite constellation. The WTRU may determine an RSRP/RSRQ for each of the plurality of candidate beams. The WTRU may determine a weighted ranking of the plurality of candidate beams. The WTRU may determine the weighted ranking using the determined RSRP/RSRQ, prevailing load intensities, elevation angle, dwelling duration, link switch probability, and/or a quality of service (QoS). The WTRU may select a beam from the plurality of candidate beams for cell selection. The WTRU may select the beam based on the weighted ranking.

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may apply phase precompensation to multiple user-multiple input multiple output (MU-MIMO) communications with different wireless devices. The wireless device may measure one or more axis offsets between antenna arrays of the wireless device and other antenna arrays of different wireless devices. The wireless device may perform MU-MIMO communications with the different wireless devices by applying phase precompensation according to the axis offset. For example, the wireless device may transmit or receive communications from multiple wireless devices using the phase precompensation.

Abstract: WiFi repeater devices described provided herein. An example device includes an enclosure that is configured to be mounted to a window that divides an outdoor area from an indoor area. The enclosure houses a 5 GHz WiFi client radio coupled with a high order MIMO (multiple input, multiple output) antenna, the high order MIMO antenna transmitting and receiving data from a 5 GHz access point located in the outdoor area, and a 2.4 GHz WiFi access point radio coupled with a MIMO (multiple input, multiple output) antenna, the MIMO antenna transmitting and receiving data from 2.4 GHz UEs located in the indoor area.

Abstract: A phase shifter assembly includes first and second phase shifters that respectively include a wiper printed circuit board and a rotatable wiper support, where the wiper printed circuit board and the wiper support are coupled in motion. The phase shifter assembly further comprises: a U-shaped bracket having first and second arms, where the first phase shifter is held on the first arm, and the second phase shifter is held on the second arm; and a rack that is linearly movably supported and is drivable to move linearly; wherein the slide holders has a tooth portion respectively, and the tooth portions are engaged with the common rack. By means of linear movement of the rack, the slide holders can be rotated respectively, and thus the slides are movable within a predetermined range respectively so as to implement phase shifts.

Abstract: In one embodiment, a method comprises: receiving a signal from a remote antenna at first and second antennas, the first and second antenna being collocated and offset from one another by a fixed predetermined angle such that a center of a high gain region of a main lobe of the first antenna is substantially aligned with a low gain region of a main lobe of the second antenna; determining a set of characteristics of the signal based on the signal being received at the first antenna; decoding a first data set based on the signal being received at the first antenna and a second data set based on the signal being received at the second antenna, both using the set of signal characteristics; and determining a currently aimed direction of the first antenna with relation to the remote antenna based on the difference between the first and second data sets.

Abstract: The described features generally relate to determining dynamic signal quality criteria for an installation of satellite terminals for communications in a satellite communications system. In particular, the signal quality criteria for an installation may be based on an identified position of the satellite terminal to be installed, and in some examples based on the positions and signal characteristics of neighboring satellite terminals that have already been installed. In some examples, a signal quality map may be generated for a service beam coverage area, based on predetermined transmission characteristics and/or measured transmissions from a number of satellite terminals served by a communications satellite. The generated signal quality map may then be used to determine a signal quality threshold for the installation of a satellite terminal being installed for communications in a satellite communications system.

Abstract: A method for an unmanned aerial vehicle (UAV) includes: identifying a target object in a photographed image to track the target object; determining, based on a location of the target object in the photographed image, a location of the UAV, and an altitude of a gimbal of the UAV, a location of the target object to continuously record the location of the target object; and in response to a disappearance of the target object in the photographed image, controlling, according to the recorded location of the target object prior to the disappearance of the target object, the altitude of the gimbal such that a photographing device carried by the UAV through the gimbal continues to photograph in a direction from the photographing device to the location of target object.

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device, which may be an example of a user equipment and/or a base station, may receive a signal from a receiving device indicating an antenna topology supported by the receiving device. The transmitting device may select, based at least in part on the antenna topology, a diversity scheme for performing a wireless transmission to the receiving device, the diversity scheme including one or more diversity types from a plurality of diversity types. The transmitting device may transmit the wireless transmission to the receiving device employing the selected diversity scheme.

Abstract: A method at a network node for compensating for inter-frequency coverage disparity between multiple cells operating across a coverage area of a wireless communications network. The method determines a disparity in signal coverage over the coverage area between a first cell and a second cell, wherein the first cell operates at a different frequency spectrum or frequency band from the second cell and wherein the network node determines the disparity in signal coverage by analyzing network data collected for the first and second cells. The method determines when the disparity in signal coverage meets a set criterion; and when the disparity in signal coverage meets the set criterion, adjusting coverage shape of one of the first cell and the second cell over the coverage area to reduce the disparity, wherein the adjusting of the coverage shape is performed by tilting signal coverage of the antenna at the transmission point.