Abstract: A disinfection robot system, includes: a light disinfection unit having first UVC lamps exposed to the outside to perform disinfection through emission of ultraviolet light; a plurality of air suction and disinfection units each having a second UVC lamp, an air suction pipe adapted to locate the second UVC lamp therein and configured to prevent the ultraviolet light emitted from the second UVC lamp from being exposed to the outside, a plurality of photocatalyst-coated means disposed inside the air suction pipe to produce hydroxyl groups through the ultraviolet light emitted from the second UVC lamp, and a fan for sucking air to the interior of the air suction pipe; a sensing unit having a human presence sensor and a distance sensor; and a control unit for controlling the light disinfection unit and the air suction and disinfection units according to the information detected by the sensing unit.

Abstract: An apparatus and method for manufacturing a grilled seaweed includes the apparatus comprising a grilling unit having a first housing with a first inlet opening and a first outlet opening which communicate with each other; a first conveyor for transferring a sheet of seaweed from the first inlet opening to the first outlet opening; a first heating source installed over the first conveyor to discharge a flame onto a top surface of the seaweed being transferred by the first conveyor; and a second heating source installed on both sides of a lower portion of the first conveyor to apply a flame onto a bottom surface of the seaweed being transferred by the first conveyor.

Abstract: The present invention relates to a pharmaceutical composition for preventing or treating alopecia areata acting as a functional antagonist for S1P receptor's subtypes S1PR1 and S1PR4, and more particularly, relates to a pharmaceutical composition containing as an active ingredient a sphingolipid compound acting as a functional antagonist for S1PR1 and S1PR4, does not cause cardiovascular side effects, and is effective in preventing or treating alopecia areata.

Abstract: The present invention provides a pharmaceutical composition for prevention or treatment of a stress disease and depression, the pharmaceutical composition be safely useable without toxicity and side effects by using an extract of leaves of Vaccinium bracteatum Thunb., which is natural resource of Korea, so that the reduction of manufacturing and production costs and the import substitution and export effects can be expected through the replacement of a raw material for preparation with a plant inhabiting in nature.

Abstract: A semiconductor device includes a first interlayer insulating film disposed on a substrate and having a first trench. A first lower conductive pattern fills the first trench and includes first and second valley areas that are spaced apart from each other in a first direction parallel to an upper surface of the substrate. The first and second valley areas are recessed toward the substrate. A second interlayer insulating film is disposed on the first interlayer insulating film and includes a second trench that exposes at least a portion of the first lower conductive pattern. An upper conductive pattern fills the second trench and includes an upper barrier film and an upper filling film disposed on the upper barrier film. The upper conductive pattern at least partially fills the first valley area.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A device for performing load balancing in a wireless communication system, according to various embodiments of the disclosure, comprises a communication unit and at least one processor operably coupled with the communication unit, wherein the at least one processor is configured so as to transmit a control signal for changing a serving cell of a first terminal from a first cell to a second cell on the basis of first measurement information of the first terminal serviced by the first cell and second measurement information of a second terminal serviced by the second cell, and each piece of information may include a beam and receiving strength for a serving cell and a neighboring cell.

Abstract: A method of a base station (BS) in a wireless communication system is provided, The method comprises: receiving, from a user equipment (UE), a 1st layer sounding reference signal (SRS); arranging the 1st layer SRS based on two antenna polarizations of an antenna system of the BS; identifying a dominant direction of a channel based on the 1st layer SRS; identifying a coefficient between two antenna polarizations based on the 1st layer SRS; constructing a 2-layer channel matrix based on the identified dominant direction and the identified coefficient; and transmitting, to the UE, a downlink signal via the antenna system based on the constructed 2-layer channel matrix.

Abstract: Apparatuses and methods for transmitting and receiving signals in a mobile communication system are provided. A method for transmitting a signal by an evolved Node B (eNB) in a mobile communication system includes transmitting a same control channel signal to each of a plurality of Radio Units (RUs), and transmitting a different data channel signal to each of the plurality of RUs. A data channel signal transmitted to each of the plurality of RUs may be determined taking into account at least one of a location of a User Equipment (UE) that will receive the data channel signal, and load balancing.

Abstract: A method of a base station (BS) in a wireless communication system is provided, The method comprises: receiving, from a user equipment (UE), a 1st layer sounding reference signal (SRS); arranging the 1st layer SRS based on two antenna polarizations of an antenna system of the BS; identifying a dominant direction of a channel based on the 1st layer SRS; identifying a coefficient between two antenna polarizations based on the 1st layer SRS; constructing a 2-layer channel matrix based on the identified dominant direction and the identified coefficient; and transmitting, to the UE, a downlink signal via the antenna system based on the constructed 2-layer channel matrix.

Abstract: Base station (BS) capable of beamforming in a wireless communication includes a transceiver comprising an antenna array, the transceiver configured to measure SRS from a UE, using at least one portion of the antenna array, and a processor configured to select at least one UL beam vector based on an SRS measurement from a UL beam-codebook comprising a set of beam weight vectors, determine at least one DL beam weight vector corresponding to each of the selected at least one UL beam weight vector, transmit a beamformed CSI-RS by applying the at least one DL beam weight vector to the antenna array, receive a CSI feedback including a PMI from the UE, wherein the PMI is determined based on the beamformed CSI-RS, and construct a precoding channel matrix for the UE based on the PMI and the at least one DL beam weight vector.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A device for performing load balancing in a wireless communication system, according to various embodiments of the disclosure, comprises a communication unit and at least one processor operably coupled with the communication unit, wherein the at least one processor is configured so as to transmit a control signal for changing a serving cell of a first terminal from a first cell to a second cell on the basis of first measurement information of the first terminal serviced by the first cell and second measurement information of a second terminal serviced by the second cell, and each piece of information may include a beam and receiving strength for a serving cell and a neighboring cell.

Abstract: Base station (BS) capable of beamforming in a wireless communication includes a transceiver comprising an antenna array, the transceiver configured to measure SRS from a UE, using at least one portion of the antenna array, and a processor configured to select at least one UL beam vector based on an SRS measurement from a UL beam-codebook comprising a set of beam weight vectors, determine at least one DL beam weight vector corresponding to each of the selected at least one UL beam weight vector, transmit a beamformed CSI-RS by applying the at least one DL beam weight vector to the antenna array, receive a CSI feedback including a PMI from the UE, wherein the PMI is determined based on the beamformed CSI-RS, and construct a precoding channel matrix for the UE based on the PMI and the at least one DL beam weight vector.

Abstract: A transmission method and apparatus are provided for use in a wireless communication system in which a cell includes a plurality of sub-cells. A Transmission Point (TP) in the wireless communication system includes a transmitter configured to transmit a signal to each of the plurality of sub-cells through a plurality of antennas; a receiver configured to receive uplink control information from a User Equipment (UE) located within at least one of the plurality of sub-cells; and a controller configured to determine a virtual matrix for each of the plurality of sub-cells, to select a precoding matrix according to the virtual matrices of the plurality of sub-cells, to determine a cooperative transmission mode or a normal transmission mode, based on the received uplink control information, and to control the transmitter to perform downlink transmission on a sub-cell basis through the virtual matrices of the sub-cells according to the determined transmission mode.

Abstract: The present invention relates to a method by which a base station performs multiple input and multiple output (MIMO) transmission using antennas of a plurality of cells in a multi-cell wireless communication system, the method comprising the steps of: selecting a rank value and cells for downlink MIMO transmission of a terminal on the basis of measurement information of the base station and the terminal, and determining a precoding matrix according to the rank value; and generating data which is to be transmitted to the terminal as data streams corresponding to the selected rank value, and mapping the data streams to antennas of the selected cells through a precoder so as to transmit the data streams to the terminal.

Abstract: A method of determining a serving sub-cell of a terminal among a plurality of sub-cells by a base station in a wireless communication system is provided. The method includes generating reference signal transmission interval information for each of the sub-cells by configuring a reference signal transmission interval for each of the plurality of sub-cells, and transmitting the reference signal transmission interval information for each of the sub-cells to the corresponding sub-cell, receiving channel status information for at least one sub-cell among the plurality of sub-cells from the terminal, and determining a serving sub-cell of the terminal by using at least one of the reference signal transmission interval information, the channel status information, a reception time of the channel status information, of each of the sub-cells.

Abstract: A transmission method and apparatus are provided for use in a wireless communication system in which a cell includes a plurality of sub-cells. A Transmission Point (TP) in the wireless communication system includes a transmitter configured to transmit a signal to each of the plurality of sub-cells through a plurality of antennas; a receiver configured to receive uplink control information from a User Equipment (UE) located within at least one of the plurality of sub-cells; and a controller configured to determine a virtual matrix for each of the plurality of sub-cells, to select a precoding matrix according to the virtual matrices of the plurality of sub-cells, to determine a cooperative transmission mode or a normal transmission mode, based on the received uplink control information, and to control the transmitter to perform downlink transmission on a sub-cell basis through the virtual matrices of the sub-cells according to the determined transmission mode.

Abstract: A transmission method and apparatus are provided for use in a wireless communication system in which a cell includes a plurality of sub-cells. A Transmission Point (TP) in the wireless communication system includes a transmitter configured to transmit a signal to each of the plurality of sub-cells through a plurality of antennas; a receiver configured to receive uplink control information from a User Equipment (UE) located within at least one of the plurality of sub-cells; and a controller configured to determine a virtual matrix for each of the plurality of sub-cells, to select a precoding matrix according to the virtual matrices of the plurality of sub-cells, to determine a cooperative transmission mode or a normal transmission mode, based on the received uplink control information, and to control the transmitter to perform downlink transmission on a sub-cell basis through the virtual matrices of the sub-cells according to the determined transmission mode.

Abstract: A method for transmitting data by a base station in a wireless communication system is provided. The method includes transmitting a response signal for downlink data received from a user equipment and channel state information to a central coordinator, receiving scheduling information from the central coordinator and determining an interference control mode determined according to whether interference of adjacent base stations is controlled, based on the scheduling information, and transmitting data to the user equipment by using a Modulation and Coding Scheme (MCS) level according to the determined interference control mode.

Abstract: Apparatuses and methods for transmitting and receiving signals in a mobile communication system are provided. A method for transmitting a signal by an evolved Node B (eNB) in a mobile communication system includes transmitting a same control channel signal to each of a plurality of Radio Units (RUs), and transmitting a different data channel signal to each of the plurality of RUs. A data channel signal transmitted to each of the plurality of RUs may be determined taking into account at least one of a location of a User Equipment (UE) that will receive the data channel signal, and load balancing.