Abstract: A resource block scheduling method and an electronic device performing the method are disclosed.

Abstract: The present disclosure relates to a method of determining satellite orbital positions and routing for a Low Earth Orbit (LEO) satellite network, and the method calculates a communication throughput in each of a link between the transmitting base station and a satellite deployed on the first orbit, a link between satellites deployed on the first and second orbits, and a link between a satellite deployed on the second orbit and the receiving base station, and calculating a communication throughput in an entire link between the transmitting base station and the receiving base station on the basis of the communication throughput in each link, determines satellite orbital position variables and routing variables for maximizing the communication throughput in the entire link, and determines deployment of satellites on the first and second orbits on the basis of the satellite orbit position variables and routing variables.

Abstract: The present invention relates to a holographic recording media wherein an adhesive force between the photopolymer layer and the adhesive protective layer before light irradiation is 500 to 5,000 gf/20 nm, and a haze value of the photopolymer layer is 3% or less, and an optical element including the holographic recording medium.

Abstract: A hybrid graphene material includes a functional group to expand the use of graphene in various applications. The hybrid material may include a substrate, such as silicon nanowires, where the graphene is fabricated on the surface of the substrate with an out-of-plane topography. Functional groups can be added to the graphene and affect the electrical, chemical, or photo characteristics of the hybrid material.

Abstract: Photoreceptor scaffolds that can be used for transplantation of organized photoreceptor tissue, with or without retinal pigment epithelial cells, which may improve grafted cell survival, integration, and functional visual rescue are disclosed herein. The scaffolds include a cell support layer having at least one honeycomb-shaped reservoir fluidly connected to a plurality of through-holes and at least one cell in the at least one honeycomb-shaped reservoir.

Abstract: Photoreceptor scaffolds that can be used for transplantation of organized photoreceptor tissue, with or without retinal pigment epithelial cells, which may improve grafted cell survival, integration, and functional visual rescue are disclosed herein. The scaffolds include a cell support layer having at least one honeycomb-shaped reservoir fluidly connected to a plurality of through-holes and at least one cell in the at least one honeycomb-shaped reservoir.

Abstract: The present disclosure relates to a protecting film for a cover window of a flexible display device in which a first hard coating layer containing 3 parts by weight or less of inorganic particles based on 100 parts by weight of a binder resin; a second hard coating layer containing 10 to 45 parts by weight of inorganic particles based on 100 parts by weight of a binder resin; and a light-transmitting substrate are sequentially laminated, wherein the first hard coating layer and the second hard coating layer have a specific thickness ratio, a cover window and a display device including the same.

Abstract: The present invention provides surface-engineered extracelluar vesicles, compositions comprising the surface-engineered extracelluar vesicles, methods for preparing the surface-engineered extracelluar vesicles, and methods for using the surface-engineered extracelluar vesicles or the compositions.

Abstract: A monitoring system using cooperative jamming and spoofing according to an embodiment of the present disclosure includes a spoofing relay to amplify and relay an illegal signal detected from an illegal transmitter according to a preset amplification coefficient, a cooperative jammer to transmit a jamming signal for changing the quality of a communication channel to an illegal receiver with a preset transmit power, and a monitor to calculate the amplification coefficient and the transmit power so that an information monitoring amount is maximum based on the illegal signal received from the spoofing relay.

Abstract: The present disclosure relates to design of a line panel codebook and a method and an apparatus for transmission and reception based on it in a wireless communication system. A method in which a transmitter transmits a precoded signal to a receiver in a wireless communication system according to an embodiment of the present disclosure may include determining one or more codewords and a panel phase factor for each of a plurality of line panels equipped with the transmitter; precoding data which will be transmitted to the receiver based on the determined one or more codewords and a panel phase factor; and transmitting the precoded signal to the receiver.

Abstract: The present disclosure relates to a 5th-generation (5G) or pre-5G communication system, which is to be provided for supporting higher data transmission rates after a 4th-generation (4G) communication system, such as long-term evolution (LTE). A method of a base station proposed in various embodiments of the present disclosure comprises the procedures of: transmitting synchronization signal blocks (SSBs) allocated on the basis of deployment information of the base station, an angle covered by each sector of the base station, and the number of SSB indices; receiving, from a terminal, an SSB index selected from among the SSBs; estimating a location of the terminal on the basis of the SSB index; estimating a speed of the terminal on the basis of the SSB index and the location of the terminal; estimating a moving section of the terminal on the basis of the speed of the terminal; and configuring a beamforming vector for the terminal on the basis of the moving section of the terminal.

Abstract: The present invention relates to a photopolymer composition for hologram formation, comprising: a polymer matrix comprising a siloxane-based polymer and a (meth)acrylate polymer containing one or more reactive functional groups in the side chains, a holographic recording method, and an optical element.

Abstract: A beamforming method in a simultaneous wireless information and power transfer system and an apparatus therefor may derive a transmission signal transmitted to a plurality of information users and a plurality of energy users from a base station having an NT (here, NT is a natural number) number of antennas included in each cell, derive a SINR (Signal to Interference plus Noise Ratio) of an ith (here, i is a natural number) information user by using a noise power of the ith (here, i is a natural number) information user included in a mth (here, m is a natural number) cell, derive a harvested power of a jth (here, j is a natural number) energy user included in the mth (here, m is a natural number) cell, and perform beamforming by using a transmission signal power at the base station and a total harvested power of the plurality of energy users receiving a transmission signal from the base station.

Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.

Abstract: The present disclosure relates to a method and an apparatus of controlling base station power in a distributive manner in a wireless communication system. A method according to an embodiment of the present disclosure may include determining ui indicating a turn-on or turn-off state of an i-th base station based on mutual message passing with an adjacent base station in the i-th base station among B base stations; determining xia indicating whether a signal is transmitted to an a-th terminal among N terminals from the i-th base station; and obtaining an optimized value of the ui and the xia which minimize total energy consumption consumed by the B base stations and simultaneously, maximize a data rate of the B base stations.

Abstract: Provided is a method where mobile relay performs bidirectional inter-terminal communication in wireless communication system. The method includes determining optimal values of predetermined variables for maximizing a transmission ratio for the bidirectional inter-terminal communication during a predetermined time segment using pieces of basic information of at least one of the mobile relay, a first terminal, or a second terminal, transmitting setting information on the optimal values to at least one of the first terminal and the second terminal, and performing the bidirectional inter-terminal communication on the basis of the optimal values. The predetermined variables include at least one of a position of the mobile relay, a speed of the mobile relay, acceleration of the mobile relay, a downlink transmission power of the mobile relay, an uplink transmission power of the first terminal, an uplink transmission power of the second terminal, or a transmission resource allocation ratio for uplink and downlink.

Abstract: Provided is a feedback method in a wireless communication system according to an embodiment of the present disclosure. The method includes enabling a receiver to acquire a reception signal vector including a channel component and a noise component, enabling the receiver to generate feedback information by performing one or more of the following on the reception signal vector: processing through one or more first layers; processing through a second layer, and processing through a quantization layer, and enabling the receiver to transmit the feedback information to a transmitter. In the feedback method, the quantization includes stochastic binarization.

Abstract: The present disclosure relates to a method and an apparatus of controlling base station power in a distributive manner in a wireless communication system. A method according to an embodiment of the present disclosure may include determining ui indicating a turn-on or turn-off state of an i-th base station based on mutual message passing with an adjacent base station in the i-th base station among B base stations; determining xia indicating whether a signal is transmitted to an a-th terminal among N terminals from the i-th base station; and obtaining an optimized value of the ui and the xia which minimize total energy consumption consumed by the B base stations and simultaneously, maximize a data rate of the B base stations.

Abstract: A monitoring system using cooperative jamming and spoofing according to an embodiment of the present disclosure includes a spoofing relay to amplify and relay an illegal signal detected from an illegal transmitter according to a preset amplification coefficient, a cooperative jammer to transmit a jamming signal for changing the quality of a communication channel to an illegal receiver with a preset transmit power, and a monitor to calculate the amplification coefficient and the transmit power so that an information monitoring amount is maximum based on the illegal signal received from the spoofing relay.

Abstract: A beamforming method in a simultaneous wireless information and power transfer system and an apparatus therefor may derive a transmission signal transmitted to a plurality of information users and a plurality of energy users from a base station having an NT (here, NT is a natural number) number of antennas included in each cell, derive a SINR (Signal to Interference plus Noise Ratio) of an ith (here, i is a natural number) information user by using a noise power of the ith (here, i is a natural number) information user included in a mth (here, m is a natural number) cell, derive a harvested power of a jth (here, j is a natural number) energy user included in the mth (here, m is a natural number) cell, and perform beamforming by using a transmission signal power at the base station and a total harvested power of the plurality of energy users receiving a transmission signal from the base station.