Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate than a 4G communication system such as LTE. A method for transmitting and receiving data comprises the steps of: receiving a first synchronization block over a first narrow band; identifying whether an indicator indicating that the first narrow band is not allocated to a terminal is included in the first synchronization block; and performing synchronization in the first narrow band if the indicator indicating that the first narrow band is not allocated to the terminal is not included in the first synchronization block.

Abstract: This disclosure relates to a 5G or pre-5G communication system to be provided to support a higher data transmission rate after a 4G communication system such as LTE. An apparatus that combines a plurality of radio signals according to an embodiment of the present invention comprises: a plurality of antennas which receive the plurality of radio signals; a baseband modem which generates channel estimation information related to the plurality of radio signals and combines the plurality of radio signals on the basis of combining control information; and a controller which generates the combining control information on the basis of the channel estimation information and preset configuration information and transmits the combining control information to the baseband modem.

Abstract: A base station for transmitting data to a terminal in a wireless communication system is provided. The base station includes a transceiver, a storage, and a controller including a first control unit and a second control unit, wherein the controller is configured to perform, by the first control unit, data packing on bit unit information including information related to the data and information related to a modulation type, transmit, by the first control unit, the bit unit information on which the data packing is performed and additional information to the second control unit, modulate, by the second control unit, the data based on the bit unit information on which the data packing is performed, and generate, by the second control unit, a signal to be transmitted to the terminal, based on the modulated data and the additional information.

Abstract: A base station for transmitting and receiving signals in a wireless communication system is provided. The base station includes a transceiver, and at least one processor configured to obtain reception antenna weights for the base station including an array of a plurality of antennas, and transmission antenna weights for at least one user equipment (UE), convert signals received from the at least one UE through a plurality of reception paths, into beam-domain signals, based on the transmission antenna weights and the reception antenna weights, combine the converted beam-domain signals by applying predefined combining weights to the converted beam-domain signals, and obtain data from the combined signals.

Abstract: Disclosed are a method and a device for differently applying phase rotations for each antenna by dividing a frequency band in order to solve a problem in which reception performance deteriorates in a specific subcarrier when the correlation between antennas is high. According to the present invention, a method by which a transmitter transmits a signal comprises the steps of: estimating the transmission correlation between respective transmission paths; calculating a phase rotation value to be applied to a transmission signal on the basis of the estimated transmission correlation; applying a phase rotation in accordance with the phase rotation value to the transmission signal; and transmitting the transmission signal.

Abstract: A base station for transmitting data in an OFDM system is provided. The base station is configured to convert data or a signal into a wireless band and transmit the converted data or signal to a terminal, down-convert a signal and output the down-converted signal, and generate a message for requesting terminal capability information for a sub-carrier spacing and transmit the message to the terminal accessing the base station, generate information on sub-bands of groups available to the terminal in response to receiving a terminal capability response message from the terminal and transmit the information on the sub-bands of groups available to the terminal, allocate a resource by selecting sub-bands of one group of the sub-bands of the groups available to the terminal in response to receiving a scheduling request message from the terminal and generate and transmit a resource allocation message, and transmit the data using the allocated resource.

Abstract: The disclosure relates to detection and control of remote interference due to an atmospheric ducting phenomenon. More specifically, a method of a first base station, according to one embodiment of the disclosure, for controlling interference due to atmospheric ducting in a wireless communication system includes: receiving a sequence from at least one second base station; identifying the at least one second base station corresponding to the sequence; estimating a channel for the at least one identified second base station, based on the sequence; and controlling a beam in a direction corresponding to the at least one identified second base station, based on a result of the channel estimation.

Abstract: A base station for transmitting and receiving signals in a wireless communication system is provided. The base station includes a transceiver, and at least one processor configured to obtain reception antenna weights for the base station including an array of a plurality of antennas, and transmission antenna weights for at least one user equipment (UE), convert signals received from the at least one UE through a plurality of reception paths, into beam-domain signals, based on the transmission antenna weights and the reception antenna weights, combine the converted beam-domain signals by applying predefined combining weights to the converted beam-domain signals, and obtain data from the combined signals.

Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transfer rate than a 4G communication system such as LTE. The method is for phase correction of an antenna in a large-capacity antenna system, the method includes grouping large-capacity antennas into a predetermined number of groups; setting a path such that ports of the grouped antennas have a feedback path; outputting a test signal to be outputted to each antenna port of each group by adding a code or sequence having orthogonality; separating signals for each antenna port in the group by using the code or sequence having orthogonality in a signal received through the feedback path; and calculating a calibration value by detecting a phase change of the separated signal.

Abstract: The present disclosure relates to a 5G or a pre-5G communication system for supporting a higher data rate beyond 4G communication systems such as LTE. A signal transmitting method of an apparatus according to an embodiment of the present disclosure may include: confirming a location of a control signal for a first communication system when a transmission band of the first communication system and a transmission band of a second communication system overlap each other; puncturing a signal for the second communication system at the confirmed location of the control signal for the first communication system; and transmitting the punctured signal for the second communication system.

Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transfer rate than a 4G communication system such as LTE. The method is for phase correction of an antenna in a large-capacity antenna system, the method includes grouping large-capacity antennas into a predetermined number of groups; setting a path such that ports of the grouped antennas have a feedback path; outputting a test signal to be outputted to each antenna port of each group by adding a code or sequence having orthogonality; separating signals for each antenna port in the group by using the code or sequence having orthogonality in a signal received through the feedback path; and calculating a calibration value by detecting a phase change of the separated signal.

Abstract: The present disclosure relates to a communication technique for convergence of a 5G communication system for supporting a higher data transmission rate beyond a 4G system with an IoT technology, and a system therefor. The present disclosure may be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology. An operation method of an inter-antenna phase calibration device in a wireless communication system using an unlicensed band according to an embodiment of the present invention comprises the steps of: calculating a listen before talk (LBT) processing time while an LBT is being performed; selecting a calibration mode for calibrating an inter-antenna phase on the basis of the LBT processing time; and calibrating the inter-antenna phase according to the selected calibration mode.

Abstract: An electronic device in a wireless communication may include a communication unit configured to receive a signal, and a control unit configured to perform decoding of a control channel of the signal according to a first decoding condition among decoding conditions determined based on system information candidates for system information and to determine whether decoding is successful for the first decoding condition according to a result of performing the decoding.

Abstract: The disclosure relates to a 5G or pre-5G communication system for supporting a higher data rate after a 4G communication system such as LTE. According to an embodiment, a method of a base station in a wireless communication system includes identifying, in a synchronization block to be generated, a resource to which a signal related to the synchronization block is not mapped, determining whether to map a specific signal to the identified resource, and transmitting, to a terminal, the synchronization block generated based on a result of the determination.

Abstract: Provided are a cell ID determination method and apparatus for a receiving device in a wireless communication system. The cell ID determination method for a receiving device may include: receiving a first synchronization signal and a second synchronization signal; generating a first joint signal by concatenating the first synchronization signal and the second synchronization signal; calculating the correlation between the first joint signal and each of a preset number of cell IDs; and determining a cell ID using the calculated correlations.

Abstract: A method of an electronic device is provided. The method includes receiving signals from adjacent base stations comprising a first base station and a second base station, respectively, detecting a first synchronization signal and a second synchronization signal for the first base station among the received signals, estimating a first signal corresponding to the detected first synchronization signal and second synchronization signal, eliminating the first signal among the signals received from the adjacent base stations, and detecting a second signal for the second base station.

Abstract: Disclosed are a method and a device for differently applying phase rotations for each antenna by dividing a frequency band in order to solve a problem in which reception performance deteriorates in a specific subcarrier when the correlation between antennas is high. According to the present invention, a method by which a transmitter transmits a signal comprises the steps of: estimating the transmission correlation between respective transmission paths; calculating a phase rotation value to be applied to a transmission signal on the basis of the estimated transmission correlation; applying a phase rotation in accordance with the phase rotation value to the transmission signal; and transmitting the transmission signal.

Abstract: Provided is a power control method of a transmitter. The method may include: generating a first aggregated carrier signal by aggregating multiple carrier signals; determining whether at least one peak exceeding a preset threshold is detected among the peaks of the first aggregated carrier signal; generating, if at least one peak exceeding the preset threshold is detected, at least one cancellation signal based on the detected at least one peak; and mapping the at least one cancellation signal to reserved subcarriers. It is possible to reduce the PAPR at the side of an amplifier by applying a tone reservation technique to multicarrier signals.

Abstract: The present disclosure relates to a communication technique for convergence of a 5G communication system for supporting a higher data transmission rate beyond a 4G system with an IoT technology, and a system therefor. The present disclosure may be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology. An operation method of an inter-antenna phase calibration device in a wireless communication system using an unlicensed band according to an embodiment of the present invention comprises the steps of: calculating a listen before talk (LBT) processing time while an LBT is being performed; selecting a calibration mode for calibrating an inter-antenna phase on the basis of the LBT processing time; and calibrating the inter-antenna phase according to the selected calibration mode.

Abstract: The present disclosure relates to a 5G or a pre-5G communication system for supporting a higher data rate beyond 4G communication systems such as LTE. A signal transmitting method of an apparatus according to an embodiment of the present disclosure may include: confirming a location of a control signal for a first communication system when a transmission band of the first communication system and a transmission band of a second communication system overlap each other; puncturing a signal for the second communication system at the confirmed location of the control signal for the first communication system; and transmitting the punctured signal for the second communication system.