Abstract: Yarn energy harvesters containing conducing nanomaterials (such as carbon nanotube (CNT) yarn harvesters) that electrochemically convert tensile or torsional mechanical energy into electrical energy. Stretched coiled yarns can generate 250 W/kg of peak electrical power when cycled up to 24 Hz, and can generate up to 41.2 J/kg of electrical energy per mechanical cycle. Unlike for other harvesters, torsional rotation produces both tensile and torsional energy harvesting and no bias voltage is required, even when electrochemically operating in salt water. Since homochiral and heterochiral coiled harvester yarns provide oppositely directed potential changes when stretched, both contribute to output power in a dual-electrode yarn.

Abstract: Yarn energy harvesters containing conducing nanomaterials (such as carbon nanotube (CNT) yarn harvesters) that electrochemically convert tensile or torsional mechanical energy into electrical energy. Stretched coiled yarns can generate 250 W/kg of peak electrical power when cycled up to 24 Hz, and can generate up to 41.2 J/kg of electrical energy per mechanical cycle. Unlike for other harvesters, torsional rotation produces both tensile and torsional energy harvesting and no bias voltage is required, even when electrochemically operating in salt water. Since homochiral and heterochiral coiled harvester yarns provide oppositely directed potential changes when stretched, both contribute to output power in a dual-electrode yarn.

Abstract: The present disclosure relates to a wireless communications technology. Specifically, the present disclosure provides a method and device for reducing terminal interference due to sidelobes on the basis of channel state information (CSI) in a hybrid beamforming architecture.

Abstract: The present invention relates to an elastic fiber electrode including a hybrid fiber prepared by coating a carbon nanotube sheet on a polymer fiber, in which the hybrid fiber is in a yarn form having a coiled structure, and the carbon nanotube sheet makes a wrinkled surface, and a coil- or spring-type elastic fiber electrode manufactured by coiling a hybrid nanofiber prepared by coating a carbon nanotube sheet on a polymer fiber has excellent mechanical and electrical properties. In particular, the elastic fiber electrode has increased porosity by depositing manganese dioxide on a surface thereof, thereby enhancing electrochemical performance. Thus, a micro-supercapacitor using the elastic fiber electrode has high current density and excellent capacitance retention, may maintain the electrochemical characteristics even after being subjected to various deformations, such as bending, coiling, or weaving, and has high elasticity and reversible behaviors, thus providing stable capacitance.

Abstract: A beamforming device is provided. The beamforming device comprises: a beam deriving unit for deriving, among multiple reception beams, a first reception beam receiving, from a terminal, the first largest reception signal and a second reception beam receiving, from the terminal, the second largest reception signal; and a control unit for estimating the direction of the terminal on the basis of a ratio value between the size of the reception signal received through the first reception beam and the size of the reception signal received through the second reception beam.

Abstract: The disclosure relates to a wireless communication technology, and more specifically, to a method and an apparatus for connecting a wireless backhaul by generating reception status information, and interference information or location information, on the basis of a beamforming signal at the time of configuration of a wireless backhaul between base stations through beamforming.

Abstract: The present disclosure relates to a wireless communications technology. Specifically, the present disclosure provides a method and device for reducing terminal interference due to sidelobes on the basis of channel state information (CSI) in a hybrid beamforming architecture.

Abstract: A beamforming device is provided. The beamforming device comprises: a beam deriving unit for deriving, among multiple reception beams, a first reception beam receiving, from a terminal, the first largest reception signal and a second reception beam receiving, from the terminal, the second largest reception signal; and a control unit for estimating the direction of the terminal on the basis of a ratio value between the size of the reception signal received through the first reception beam and the size of the reception signal received through the second reception beam.

Abstract: The disclosure relates to a wireless communication technology, and more specifically, to a method and an apparatus for connecting a wireless backhaul by generating reception status information, and interference information or location information, on the basis of a beamforming signal at the time of configuration of a wireless backhaul between base stations through beamforming.

Abstract: The present invention relates to an elastic fiber electrode including a hybrid fiber prepared by coating a carbon nanotube sheet on a polymer fiber, in which the hybrid fiber is in a yarn form having a coiled structure, and the carbon nanotube sheet makes a wrinkled surface, and a coil- or spring-type elastic fiber electrode manufactured by coiling a hybrid nanofiber prepared by coating a carbon nanotube sheet on a polymer fiber has excellent mechanical and electrical properties. In particular, the elastic fiber electrode has increased porosity by depositing manganese dioxide on a surface thereof, thereby enhancing electrochemical performance. Thus, a micro-supercapacitor using the elastic fiber electrode has high current density and excellent capacitance retention, may maintain the electrochemical characteristics even after being subjected to various deformations, such as bending, coiling, or weaving, and has high elasticity and reversible behaviors, thus providing stable capacitance.

Abstract: An apparatus for controlling a node of a wireless communication system has a traffic load determiner, a cooperation capacity determiner and a power control unit. The traffic load determiner determines a traffic load in the wireless communication system and the cooperation capacity determiner determines an available cooperation capacity of the node with another node of the wireless communication system. Further, the power control unit activates or deactivates an antenna of a node based on the determined traffic load and the determined available capacity.

Abstract: A communication system has a plurality of nodes adapted to provide for a communication with one or more devices, a central node, a passive optical network having a multiplexer/demultiplexer device adapted to demultiplex a first optical signal from the central node to the plurality of nodes, and to multiplex second optical signals from one or more of the nodes, each node having allocated a wavelength for generating its optical signal, wherein for directly transmitting signals from one node to at least one of the other nodes, the one node is adapted to generate an optical signal at the wavelength allocated to the at least one of the other nodes, the optical signal including the signal to be transmitted, and wherein the multiplexer/demultiplexer device of the passive optical network is adapted to combine the optical signal from the one node with the first optical signal.

Abstract: An apparatus for determining a control unit of a plurality of control units in a wireless communication system for controlling cooperative transmission or reception between base stations and a wireless device includes a cluster feasibility processor configured to receive a cluster feasibility response from at least one other control unit than a control unit controlling a base station serving a wireless device containing information of a feasible wireline cluster of base stations controllable by the at least one other control unit; and a control unit selector configured to select the at least one control unit for controlling a cooperative transmission or a cooperative reception between at least two base stations and the wireless device based on the at least one received information of the feasible wireline cluster of base stations controllable by the at least one other control unit.

Abstract: A method for coordinated multipoint communication in a wireless communication network, which has a plurality of base stations and a backhaul network connecting the plurality of base stations, includes selecting one or more cooperating base stations for a coordinated multipoint communication for a mobile unit serviced by a serving base station, determining whether the backhaul network supports a coordinated multipoint technique selected for a cooperating base station, and in case the backhaul network is not sufficient to support a coordinated multipoint technique for one or more of the cooperating base stations, reconfiguring the backhaul network to meet the requirements of the coordinated multipoint technique.

Abstract: An apparatus for determining a core network configuration of a wireless communication system comprises cluster determiner. A core network of a wireless communication system has a plurality of base stations, a plurality of wireline links between the base stations and at least one control unit for controlling a cluster of base stations of the plurality of base stations. The cluster determiner determines as the core network configuration at least one cluster of base stations linked by wireline links and controlled by a same control unit based on a predefined basic network configuration, so that latencies between each base station of the cluster and the control unit of the cluster are below a maximal allowable latency. The predefined basic network configuration represents information about all base stations of a core network to be configured and about possible wireline links between the base stations.

Abstract: A communication system has a plurality of nodes adapted to provide for a communication with one or more devices, a central node, a passive optical network having a multiplexer/demultiplexer device adapted to demultiplex a first optical signal from the central node to the plurality of nodes, and to multiplex second optical signals from one or more of the nodes, each node having allocated a wavelength for generating its optical signal, wherein for directly transmitting signals from one node to at least one of the other nodes, the one node is adapted to generate an optical signal at the wavelength allocated to the at least one of the other nodes, the optical signal including the signal to be transmitted, and wherein the multiplexer/demultiplexer device of the passive optical network is adapted to combine the optical signal from the one node with the first optical signal.

Abstract: An apparatus for controlling a node of a wireless communication system has a traffic load determiner, a cooperation capacity determiner and a power control unit. The traffic load determiner determines a traffic load in the wireless communication system and the cooperation capacity determiner determines an available cooperation capacity of the node with another node of the wireless communication system. Further, the power control unit activates or deactivates an antenna of a node based on the determined traffic load and the determined available capacity.