A communication network, a method of determining at least one propagation characteristic, and a method of wireless communication are disclosed. The communication network comprises a plurality of aerial vehicles that each supports at least one respective directional antenna, and a processing element for determining at least one propagation characteristic for each respective wireless communication channel between at least one user equipment and each aerial vehicle of the plurality of aerial vehicles.

Systems, and method and computer readable media that store instructions for slowing or stopping a progress, towards a target, of a drone controlled by a remote control unit.

While suppressing a power consumption of an aerial-floating type communication relay apparatus, an interference in a multi-feeder link of a same frequency between the communication relay apparatus and plural gateway (GW) stations is suppressed. A relay communication station of the communication relay apparatus performs a first interference suppression process and a second interference suppression process by switching therebetween. The first interference suppression process suppresses an interference signal that causes an interference by a transmission signal transmitted from a gateway station and received with a directional beam corresponding to another gateway station, by using a propagation path response estimated with one frequency in a transmission signal band as an estimation frequency based on a reception result of a pilot signal without dividing a transmission signal band of a feeder link. The second interference suppression process divides a transmission signal band of a feeder link into plural divided frequency bands, and suppresses the interference signal by using a propagation path response estimated with one frequency in the divided frequency band as an estimation frequency based on a reception result of a pilot signal, for each of the divided frequency bands.

Assigning resources for transmitting signals to a user equipment includes receiving, at a first node having a first coverage area, an indication of an overlapping coverage area from a second node when the second node is a non-terrestrial node having a second coverage area that overlaps with the first coverage area. Request for resources are received from a user equipment in the first coverage area, and resources assignments to the user equipment are determined based on the first message and the received request. The resource assignments include a first resource assignment for communication with the first node and a second resource assignment for communication with the second node. The resource assignments are transmitted in a second message to the user equipment, which then communicates with the first node using the first resource assignment and to communication with the second node using the second resource assignment.

A method, a computer-readable medium, and an apparatus are provided. The apparatus may be a repeater node. The apparatus may receive, at one or more first antennas of the node, a first signal via at least one first beam. The apparatus may measure, at one or more third antennas of the node, at least one of a power or a quality of at least one third beam. The at least one of the power or the quality of the at least one third beam may be measured at a same time as the first signal is received. The apparatus may forward, at one or more second antennas of the node, the first signal via at least one second beam.

The present application relates to a transmission method, a terminal, and a network device. The transmission method comprises: receiving, by a terminal, first information which comprises timing advance (TA) related information, wherein the TA related information is used to indicate a TA used by the terminal for transmission; and performing, by the terminal, transmission based on the TA. In an embodiment of the present application, the terminal receives the first information, acquires TA related information from the first information so as to obtain an accurate TA. The TA-based transmission can improve transmission reliability.

A communication method and an apparatus. A terminal device determines height information, where a first parameter is related to the height information. The terminal device receives configuration information from a first network device, where the configuration information includes a correspondence between the height information and the first parameter. The terminal device determines, based on the height information, the first parameter corresponding to the terminal device. The first parameter includes one or more of a tracking area parameter, a radio access network notification area parameter, a cell selection or reselection parameter, and a measurement configuration parameter. Configuration information corresponding to a height of an uncrewed aerial vehicle is provided, to ensure that an uncrewed aerial vehicle terminal device at a high height obtains an effective configuration parameter, so that user experiences at different heights is improved.

Provided is a synchronization method, which includes: a first device periodically sends a first PSS sequence and first PDSCH control information at frequency points F.sub.1 to F.sub.N in sequence, where the first PSS sequence and the first PDSCH control information are used for a second device to detect the first PSS sequence and detect the first PDSCH control information; the first device receives signals at frequency points f.sub.1 to f.sub.M in sequence and detects a second PSS sequence; when the second PSS sequence is detected, the first device obtains second half-frame synchronization information and detects second PDSCH control information according to the second half-frame synchronization information; and when the second PDSCH control information is detected, the first device obtains second frame synchronization information and enters a synchronization state. Also provided are a synchronization device, a synchronization system, and a computer-readable storage medium.

A facility operates with respect to a configuration of one or more unmanned aerial vehicles operating as relays between on or more wireless network participant devices and one or more wireless base stations being supported directly or indirectly by a planetary surface. The facility conducts an experiment that yields quality of service results and flight duration results for each of multiple values of a UAV control parameter. The facility selects a value of the UAV control parameter that produced an advantageous tradeoff of quality of service results and flight duration results, and stores the selected value, such that the stored value of the UAV control parameter is usable to operate the UAVs of the configuration in production service.

Methods, systems, and devices for wireless communications are described, including a movable relay location variance report. The movable relay location variance report may enable more robust and accurate communications between a control node (e.g., a user equipment (UE) and a base station) and a movable relay (e.g., a drone) equipped with a reconfigurable intelligent surface (RIS). In some aspects, the location variance report may characterize the variance of the drone's location and transmit the information to the UE, the base station, or both. The location variance report may influence the control node beam width, the drone location, and an angle at which the drone may position a RIS. The control node may indicate an adjusted set of parameters to the drone based on receiving the location variance report.