Disclosed are a method for transmitting and receiving a synchronization signal in a wireless communication system supporting NarrowBand-Internet of Things (NB-IoT) and an apparatus therefor. Specifically, the method for transmitting and receiving a synchronization signal may include: receiving, from a base station, a narrowband synchronization signal; and performing a cell search procedure for the base station based on the narrowband synchronization signal, in which the narrowband synchronization signal may include a narrowband primary synchronization signal and a narrowband secondary synchronization signal, the narrowband primary synchronization signal and the narrowband secondary synchronization signal may be transmitted in different subframe, and the subframe in which the narrowband secondary synchronization signal is transmitted may be configured differently according to a type of a radio frame structure.

Disclosed are a method for transmitting and receiving a synchronization signal in a wireless communication system supporting NarrowBand-Internet of Things (NB-IoT) and an apparatus therefor. Specifically, the method for transmitting and receiving a synchronization signal may include: receiving, from a base station, a narrowband synchronization signal; and performing a cell search procedure for the base station based on the narrowband synchronization signal, in which the narrowband synchronization signal may include a narrowband primary synchronization signal and a narrowband secondary synchronization signal, the narrowband primary synchronization signal and the narrowband secondary synchronization signal may be transmitted in different subframe, and the subframe in which the narrowband secondary synchronization signal is transmitted may be configured differently according to a type of a radio frame structure.

A terminal is disclosed that includes a transmitter that performs uplink transmission; and a processor that adjusts timing of the uplink transmission with respect to a downlink reception timing, wherein, when a band of a cell in which uplink transmission is performed is not a predetermined band, the processor adjusts the timing by using a same offset value when a duplex mode of the band of the cell is frequency division duplex (FDD) and when the duplex mode of the band of the cell is time division duplex (TDD). In other aspects, a base station and an uplink transmission timing adjustment method executed by the terminal are also disclosed.

A terminal is disclosed that includes a transmitter that performs uplink transmission; and a processor that adjusts timing of the uplink transmission with respect to a downlink reception timing, wherein, when a band of a cell in which uplink transmission is performed is not a predetermined band, the processor adjusts the timing by using a same offset value when a duplex mode of the band of the cell is frequency division duplex (FDD) and when the duplex mode of the band of the cell is time division duplex (TDD). In other aspects, a base station and an uplink transmission timing adjustment method executed by the terminal are also disclosed.

Disclosed is an electronic device including an antenna module including one or more antennas transmitting or receiving a signal in a first frequency band and a second frequency band wirelessly, a first duplexer separating the first frequency band into a first transmission frequency band and a first reception frequency band and adjusting the first reception frequency band, a second duplexer separating the second frequency band into a second transmission frequency band and a second reception frequency band and adjusting the second reception frequency band, and a diplexer including a first terminal electrically connected to the antenna module, a first filter passing the first frequency band, a second terminal electrically connected to the first filter and the first duplexer, a second filter passing the second frequency band, and a third terminal electrically connected to the second filter and the second duplexer. The diplexer adjusts a cut-off frequency of the first filter or the second filter in connection with the first reception frequency band adjusted through the first duplexer or the second reception frequency band adjusted through the second duplexer. In addition, various embodiments as understood from the specification are also possible.

Disclosed is an electronic device including an antenna module including one or more antennas transmitting or receiving a signal in a first frequency band and a second frequency band wirelessly, a first duplexer separating the first frequency band into a first transmission frequency band and a first reception frequency band and adjusting the first reception frequency band, a second duplexer separating the second frequency band into a second transmission frequency band and a second reception frequency band and adjusting the second reception frequency band, and a diplexer including a first terminal electrically connected to the antenna module, a first filter passing the first frequency band, a second terminal electrically connected to the first filter and the first duplexer, a second filter passing the second frequency band, and a third terminal electrically connected to the second filter and the second duplexer. The diplexer adjusts a cut-off frequency of the first filter or the second filter in connection with the first reception frequency band adjusted through the first duplexer or the second reception frequency band adjusted through the second duplexer. In addition, various embodiments as understood from the specification are also possible.

A method for receiving downlink data by the terminal in a wireless communication system, includes receiving, from a base station, downlink control information for scheduling a short physical downlink shared channel (sPDSCH) on a short physical downlink control channel (sPDCCH), and receiving, from the base station, downlink data on the sPDSCH based on the downlink control information. Here, the sPDCCH and the sPDSCH are based on a first transmission time interval (TTI)-based radio frame structure, wherein the first TTI-based radio frame structure is shorter in time than a second TTI-based radio frame structure related to (i) a physical downlink shared channel (PDSCH) and (ii) a physical downlink control channel (PDCCH). Further, a number of resource element groups (REGs) consisting of a control channel element (CCE) related to the sPDCCH is smaller than a number of resource element groups (REGs) composed of a CCE related to the PDCCH.

A method for receiving downlink data by the terminal in a wireless communication system, includes receiving, from a base station, downlink control information for scheduling a short physical downlink shared channel (sPDSCH) on a short physical downlink control channel (sPDCCH), and receiving, from the base station, downlink data on the sPDSCH based on the downlink control information. Here, the sPDCCH and the sPDSCH are based on a first transmission time interval (TTI)-based radio frame structure, wherein the first TTI-based radio frame structure is shorter in time than a second TTI-based radio frame structure related to (i) a physical downlink shared channel (PDSCH) and (ii) a physical downlink control channel (PDCCH). Further, a number of resource element groups (REGs) consisting of a control channel element (CCE) related to the sPDCCH is smaller than a number of resource element groups (REGs) composed of a CCE related to the PDCCH.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit an indication of one or more reception parameters, of the UE, for sidelink communication and downlink communication. The UE may receive, based at least in part on the one or more reception parameters, at least one of one or more sidelink streams or one or more downlink streams. Numerous other aspects are provided.

The present invention provides an electronic device for mitigating inter-cell interference in a dynamic TDD environment, the electronic device including: at least one antenna array including antenna elements; and a processor configured to use the antenna array and form a plurality of reception beams having mutually different directions, wherein at least one processor may enable: a first beam pair link to be formed with a first transmission beam emitted from a first base station by using a first reception beam having a first direction; information about a first TDD pattern indicating a TDD sequence set in a serving cell formed by the first base station and information about a second TDD pattern indicating a TDD sequence set in an adjacent cell adjacent to a serving cell formed by a second base station to be acquired; a first portion of the first TDD pattern to be selected on the basis of the information about the first TDD pattern and the information about the second TDD pattern; the detection of whether interference has occurred in the first portion; and a second beam pair link to be formed with one among transmission beams emitted from the second base station by using a second reception beam having a second direction different from the first direction, when the interference is determined to have occurred.