Abstract: A communication device includes: a switching unit connected to a transmission unit, a reception unit, a transmission port, and a reception port, the switching unit being set in a first state in which the transmission unit and the transmission port are connected and the reception unit and the reception port are connected or a second state in which the transmission unit and the reception port are connected and the reception unit and the transmission port are connected; a monitoring unit configured to monitor a light level of light input from the reception port or the transmission port; and a control unit configured to set the switching unit in the first state or the second state based on the light level monitored by the monitoring unit.

Abstract: A base station apparatus, configured to establish a wireless link for a backhaul line with a relay apparatus, and provide a first period in which a radio resource is used by the base station apparatus for the backhaul line, and a second period in which the radio resource is not used by the backhaul line.

Abstract: An image decoding device includes a decoding unit configured to decode a first syntax for controlling possibility of application of a geometric partitioning mode of a decoding target sequence, and to control whether to decode a second syntax for controlling possibility of application of an intra prediction mode to the geometric partitioning mode of the decoding target sequence according to a value of the first syntax.

Abstract: An image decoding device includes: a prediction signal generation unit that generates a prediction signal by intra prediction, wherein in a block to which intra sub-partitions are applied, the prediction signal generation unit refers to a pixel of a decoded block adjacent to the block when generating prediction signals of all sub-blocks in the block.

Abstract: An image decoding device includes a prediction unit configured to generate a prediction signal included in a prediction block based on a motion vector. The prediction unit is configured to perform refinement processing of setting a search range based on a reference position specified by the motion vector, specifying a corrected reference position having the smallest predetermined cost from the search range, and correcting the motion vector based on the corrected reference position. When a block size of the prediction block is larger than a predetermined block size, the prediction unit is configured to divide the prediction block into sub-block groups and perform the refinement processing for each sub-block.

Abstract: An image decoding device, includes a filter unit using, as an input, a decoded signal prior to the filtering process and output a filtered decoded signal. The filter unit performs clipping processing on the decoded signal prior to the filtering process such that the absolute value of a differential value between a reference pixel value and a pixel value of the decoded signal prior to the filtering process is less than or equal to a predefined threshold value, and to generate the filtered decoded signal through the linear weighted addition of the value after the clipping processing is performed and the pixel value of the decoded signal prior to the filtering process; and a large-small relationship between the threshold value for a luma signal and the threshold value for a chroma signal are defined such that the large-small relationship is unchanged when an internal bit depth is changed.

Abstract: A flight management server having an acquisition unit that acquires information indicating a scheduled flight path of a flying vehicle; a detection unit that detects that a switching process is to be executed for switching communication performed by the flying vehicle during flight between terrestrial communication using terrestrial communication equipment and satellite communication using a communication satellite; and an identification unit that identifies a position of the flying vehicle during execution of the switching process based on the scheduled flight path to be followed after the switching process has started.

Abstract: A decoding device includes a transformer sets a decoded luminance component of a prediction target block to the same number of samples as that of the chrominance component corresponding to the decoded luminance component of the prediction target block and generates a luminance reference signal. A specificator specifies luminance pixels having minimum and maximum pixel values of the decoded luminance component adjacent to the decoded luminance component of the prediction target block, respectively, outputs luminance pixel values obtained from specified luminance pixels, and outputs chrominance pixel values from pigment pixels corresponding to the luminance pixels. A derivator derives a linear prediction parameter from the two pixel values and a linear prediction model. A chrominance linear predictor obtains chrominance prediction signal applying the linear prediction model based on the linear prediction parameter to the luminance reference signal.

Abstract: A flight management server having an assessment unit that assesses whether or not there is an object different from a flying vehicle within a detection range defined with respect to a position of the flying vehicle during flight; and a switching control unit that controls switching of communication performed by the flying vehicle during flight between terrestrial communication using terrestrial communication equipment and satellite communication using a communication satellite on the condition that the assessment unit has assessed that the object is not within the detection range.

Abstract: A flight management server having an assessment unit that assesses whether or not there will be a requirement to switch communication performed by a first flying vehicle during flight between terrestrial communication and satellite communication; and a determination unit that determines a detection range for providing a report in response to detection of a second flying vehicle different from the first flying vehicle, the detection range being defined with respect to a position of the first flying vehicle; wherein the determination unit makes the detection range for a case in which the assessment unit has assessed that there will be a requirement to switch between the terrestrial communication and the satellite communication larger than the detection range for a case in which the assessment unit has assessed that there will be no requirement to switch between the terrestrial communication and the satellite communication.

Abstract: A flight management system is configured to manage the flight of a flight vehicle in communication with a user terminal operated by a user. The flight management system includes a receiver configured to receive from the user terminal the flight application information including the identification information of the flight vehicle, a flight path preferred by the user, and a flight time preferred by the user; a determination unit configured to determine whether or not to permit utilization of predetermined radio waves with the flight vehicle to fly along the flight path at the flight time based on the flight application information; and a transmitter configured to transmit the flight information instructing the flight vehicle to fly along the flight path to the flight vehicle identified by the identification information on the condition that the determination unit determines to permit utilization of predetermined radio waves.

Abstract: A storage facilities management device is configured to manage storage facilities such as storage sheds for keeping flight devices. Upon receiving instruction information including a takeoff/landing time of a flight device from a flight management device, the storage facilities management device acquires circumferential information representing circumstances of a storage shed before the takeoff/landing time so as to determine whether or not the flight device is able to take off at the takeoff time of the instruction information or to determine whether or not the flight device is able to land at the landing time of the instruction information according to the circumferential information, thus transmitting the determination result to the flight management device and allowing for takeoff or landing of the flight device according to the instruction information.

Abstract: An image decoding device includes a prediction unit configured to generate a prediction signal included in a prediction block based on a motion vector. The prediction unit is configured to perform refinement processing of setting a search range based on a reference position specified by the motion vector, specifying a corrected reference position having the smallest predetermined cost from the search range, and correcting the motion vector based on the corrected reference position. When a block size of the prediction block is larger than a predetermined block size, the prediction unit is configured to divide the prediction block into sub-block groups and perform the refinement processing for each sub-block.

Abstract: A base station apparatus, configured to establish a wireless link for a backhaul line with a relay apparatus, and provide a first period in which a radio resource is used by the base station apparatus for the backhaul line, and a second period in which the radio resource is not used by the backhaul line.

Abstract: An MEC node acquires, from each base station, a measured traffic volume in a cell (target cell) formed by each base station, and predicts a traffic volume after a unit time in the target cell based on the measured traffic volume. Upon receiving from a vehicle in the target cell an inquiry regarding whether or not data transmission is permitted, the MEC node determines whether or not to permit data transmission by the vehicle, based on a prediction result of the traffic volume, and a volume of data to be transmitted by the vehicle which is indicated by information included in the inquiry. In accordance with a result of the determination, the MEC node transmits, to the vehicle that has transmitted the inquiry, a response indicating whether or not to permit data transmission.

Abstract: A decoding device includes a transformer sets a decoded luminance component of a prediction target block to the same number of samples as that of the chrominance component corresponding to the decoded luminance component of the prediction target block and generates a luminance reference signal. A specificator specifies luminance pixels having minimum and maximum pixel values of the decoded luminance component adjacent to the decoded luminance component of the prediction target block, respectively, outputs luminance pixel values obtained from specified luminance pixels, and outputs chrominance pixel values from pigment pixels corresponding to the luminance pixels. A derivator derives a linear prediction parameter from the two pixel values and a linear prediction model. A chrominance linear predictor obtains chrominance prediction signal applying the linear prediction model based on the linear prediction parameter to the luminance reference signal.

Abstract: A flying device is provided, which includes: an acquisition unit that acquires communication quality information with which position information indicating a position and the communication quality at a position indicated by the position information are associated; a flight position identification unit that identifies a flight position, which is an in-flight position; a path determination unit that determines a flight path on the basis of the communication quality associated with the position information corresponding to the flight position in the communication quality information; and a flight control unit that controls a flying mechanism on the basis of the flight path determined by the path determination unit.

Abstract: A terminal apparatus acquires, from a base station apparatus, first information indicating a first priority and second information indicating a second priority different from the first priority for when selecting a connection destination cell relating to a plurality of frequency bands, and third information indicating whether the base station apparatus can execute a predetermined function in one or more predetermined frequency bands from among the plurality of frequency bands, and selects a connection destination cell, on a basis of the third information and the predetermined function that can be executed by the terminal apparatus, according to the first priority when the base station apparatus and the terminal apparatus can execute a predetermined function in the predetermined frequency band and according to the second priority when the base station apparatus or the terminal apparatus cannot execute a predetermined function in the predetermined frequency band.

Abstract: A terminal device that can be connected to one or more base station devices that each form one or more beams is described. The terminal device monitors, when the terminal device is not connected to any of the one or more base station devices, a connection target beam to be used when the terminal device establishes a connection with any of the one or more base station devices; and reports, at least based on a fact that the connection target beam has transitioned, information regarding the connection target beam to a base station device that forms the connection target beam. A base station device among the one or more base station devices to execute paging of the terminal device and a beam to be used in the paging are controlled based on the information regarding the connection target beam.

Abstract: A flight management system is configured to manage the flight of a flight vehicle in communication with a user terminal operated by a user. The flight management system includes a receiver configured to receive from the user terminal the flight application information including the identification information of the flight vehicle, a flight path preferred by the user, and a flight time preferred by the user; a determination unit configured to determine whether or not to permit utilization of predetermined radio waves with the flight vehicle to fly along the flight path at the flight time based on the flight application information; and a transmitter configured to transmit the flight information instructing the flight vehicle to fly along the flight path to the flight vehicle identified by the identification information on the condition that the determination unit determines to permit utilization of predetermined radio waves.