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.

Methods, systems, and devices for wireless communications are described in which random access preambles may be designed to provide for relatively low inter-carrier interference (ICI) of adjacent available frequency resources in a non-terrestrial network (NTN). Random access preambles for NTN random access requests may be selected from a first set of random access preambles that are different from a second set of random access preambles for terrestrial random access requests. The first set of random access preambles may be a subset of the second set of random access preambles. The first set of random access preambles may be provided for contention-based random access (CBRA) and contention-free random access (CFRA) preambles may be configured by a base station from random access preambles that correspond to or are different from the second set of random access preambles.

Service cells are provided for wireless communication between user equipment and a core network. An aerial vehicle provides service cells for wireless communication between user equipment (UE) and a core network. A plurality of listening cells are provided across a service area associated with an aerial vehicle, and user equipment located in the service area are associated with at least one listening cell. It is determined which listening cells are qualifying listening cells that are listening cells that satisfy at least one predetermined condition, and subsequently at least one service cell in the service area is provided for each qualifying listening cell.

A relief ship includes: a hull; an on-board relay station mounted on the hull to create a first wireless communication area on and/or around the hull; at least one mover mounted on the hull and movable to a place away from the hull; and a mobile relay station mounted on the mover. The on-board relay station is configured to receive a radio wave transmitted from a ground base station and transmit the radio wave to a wireless terminal located in the first wireless communication area and configured to receive a radio wave transmitted from the wireless terminal located in the first wireless communication area and transmit the radio wave to the ground base station. The mobile relay station is configured to relay radio waves between the on-board relay station and the ground base station.

Systems, methods, apparatuses, and computer program products for switching beams on/off for high altitude platform stations (HAPS) are provided. One method may include selecting a beam on/off pattern from one or more beam on/off patterns for a high altitude platform station (HAPS) and a rotation period for the beam on/off pattern, based at least on flight information of the high altitude platform station (HAPS) and user equipment (UE) traffic load information. The method may also include transmitting, to one or more user equipment (UEs), an indication of beam switching on/off operation comprising at least one of the selected beam on/off pattern, a pattern rotation speed, and a reference time slot for a start of the selected beam on/off pattern. The method may then include initiating the beam switching on/off operation.

Embodiments of this application provide an access method and a device, and relate to the field of communication technologies. A terminal device obtains a transmission parameter between the terminal device and an access network device; and the terminal device accesses the access network device when determining, based on the transmission parameter and reference information, that a preset condition is satisfied. The reference information includes a threshold corresponding to the transmission parameter. Embodiments of this application are used for communication access.

The disclosure relates to a 5.sup.th generation (5G) or 6.sup.th generation (6G) communication system for supporting a higher data transmission rate. A method performed by an unmanned aerial system network function (UAS NF) in a wireless communication system providing a UAS service for an unmanned aerial vehicle user equipment (UAV UE) is provided. The method includes receiving, from a UAS service supplier (USS), a first message including information on a UAV USS authentication and authorization (UUAA) revocation for the UAV UE, identifying UUAA information for the UAV UE, determining, based on the UUAA information, a network entity to which the information on the UUAA revocation for the UAV UE is to be notified, and transmitting, to the network entity, a second message including the information associated with the UUAA revocation for the UAV UE.

The terrestrial-based satellite telephone monitoring system may be used for, among other things, intelligence gathering purposes that intercept communications to or from target satellite handsets or terminals. The exemplary signal processing units receive wireless signals and extend the line-of-sight range of a terrestrial-based satellite telephone monitoring system. The exemplary signal processing unit may be installed in or on an aerial vehicle, such as an unmanned aerial vehicle (UAV), or a satellite, such as a CubeSat, or other vehicle.

A system, apparatus, method, and non-transitory computer readable medium for accurately and efficiently determining communication offsets between at least one user equipment (UE) device and at least one non-terrestrial network (NTN) device may include a UE device including: a memory storing computer readable instructions and at least one processor configured to, determine location information of the UE device; receive group information from a NTN device, the group information including a plurality of group IDs corresponding to a plurality of group coverage areas within a beam coverage area, each of the plurality of group IDs including location information of a corresponding reference point, and group offset information associated with the corresponding reference point; select a group ID from the plurality of group IDs based on the location information of the UE device and the plurality of reference points; and perform UL transmission based on the group offset information.

The invention relates to a UAV arrangement device based on machine learning for maximizing communication throughput, the UAV arrangement device including: a communication module unit that receives location information and communication demand information of a user and transmits UAV arrangement information; a user information unit that stores and analyzes the location information and the communication demand information of the user; a UAV information unit that stores basic UAV information including UAV communication throughput; and a clustering algorithm modeling unit that calculates a location at which communication throughput is maximized, with a clustering algorithm based on the location information and the communication demand information of the user. The invention relates to a UAV arrangement method based on machine learning for maximizing communication throughput, the UAV arrangement method including: checking location information of a user; checking communication demand of a user; calculating central nodes of respective clusters at which communication throughput is maximized, by using a clustering algorithm; and arranging unmanned aerial vehicles of central nodes of the respective clusters.