Patent application number | Description | Published |
20080223063 | Refrigerator with air guide duct - Disclosed is a refrigerator in which a space occupied by an evaporating dish can be minimized, evaporation efficiency of defrost water by convection-heat transfer can be improved, air can be easily exhausted in a machine room, and thus the cooling efficiency of a compressor and a condenser can be improved. The refrigerator includes: a cooling apparatus including a compressor, a condenser, and an evaporator; a blowing fan blowing air to cool at least one of the compressor and the condenser; a blowing guide duct guiding the air blown by the blowing fan to an exterior; and an evaporating dish installed in a lower portion of the blowing guide duct in order to collect and evaporate defrost water, the evaporating dish having an opened upper portion to communicate with a path of the blowing guide duct. | 09-18-2008 |
20080245093 | Apparatus for refrigeration - A refrigerator including a blowing unit optimized for a bottom type condenser. The refrigerator includes a main body having a storage compartment defined therein, a condenser mounted at the bottom of the main body, and a blowing unit to blow air that has already passed through the condenser. The blowing unit includes a centrifugal fan mounted in a machine compartment and a blowing guide member to guide air blown by the centrifugal fan to the front of the main body. Consequently, it is possible to discharge the air that has already passed through the bottom type condenser, to the front of the main body, thereby accomplishing the smooth discharge of air and reducing the power consumption necessary to blow the air. | 10-09-2008 |
20090314012 | Refrigerator with supercooled beverage dispenser and method for controlling the same - A refrigerator that allows a user to receive supercooled beverage through a dispenser in the refrigerator door. The refrigerator includes a main body having a compartment and a door opening and closing the compartment, a supercooling compartment in the main body to supercool a beverage, and a dispenser in the door to dispense supercooled liquid from the supercooling compartment without opening the door. A supercooled liquid tank is detachably installed in the supercooling compartment to supercool beverage. The supercooling compartment is installed in the rear side of the door such that a supercooling compartment door may be installed in the front side of the door to open and close the supercooling compartment in front of the door. | 12-24-2009 |
20100199701 | Icemaker and refrigerator having the same - Disclosed herein is an icemaker of a refrigerator including an ice dispersing unit to disperse ice for uniform distribution of ice in an ice making container. The icemaker includes an ice making unit to make ice, and an ice making container to receive ice separated from the ice making unit. The icemaker further includes an ice dispersing unit arranged between the ice making unit and the ice making container. The ice dispersing unit serves to guide the ice moving from the ice making unit to the ice making container, to assure uniform distribution of the ice in the ice making container. | 08-12-2010 |
20110146310 | REFRIGERATOR AND OPERATION CONTROL METHOD THEREOF - Disclosed herein is a refrigerator. In a refrigeration cycle including a channel switching valve to selectively supply a refrigerant to a first evaporator side and/or a second evaporator side and hot pipes, a hot pipe on a freezing chamber side and a hot pipe on a refrigerating chamber are disposed upstream and downstream of the channel switching valve, respectively to reduce unbalance in amounts of the refrigerant and in the amounts of generated heat. | 06-23-2011 |
20120000238 | REFRIGERATOR WITH SELECTIVE AIRFLOW PASSAGE BETWEEN THE ICEMAKER AND THE ICE MAKING EVAPORATOR - Disclosed is a refrigerator having an ice making apparatus installed at a cooling chamber door that opens/closes a cooling chamber. The refrigerator includes a body having a cooling chamber therein, a cooling chamber door to open/close the cooling chamber, and an ice making apparatus installed in the cooling chamber door to make ice. An ice making evaporator is provided in the ice making apparatus to independently supply the ice making apparatus with cooling air and an ice making evaporator chamber, in which an ice making evaporator is installed, is provided adjacent to the cooling chamber door while being partitioned from the cooling chamber. | 01-05-2012 |
20120177854 | POLYESTER RESIN AND METHOD FOR PREPARING THE SAME - A polyester resin copolymerized with isosorbide and 1,4-cyclohexane dimethanol and having an improved impact strength, and a method for preparing the same are disclosed. The copolymerized polyester resin has an alternating structure of acid moieties which are derived from acid components and diol moieties which are derived from diol components, wherein the acid components comprise terephthalic acid, and the diol components comprise (i) 5˜99 mol % of 1,4-cyclohexanedimethanol and (ii) 1˜60 mol % of isosorbide with respect to the total diol components. | 07-12-2012 |
20120226014 | COPOLYMERIZED POLYESTER HEAT SHRINKABLE FILM - A copolymerized polyester heat shrinkable film which can be used as a label, a cap seal or a direct packaging for various containers is disclosed. The copolymerized polyester heat shrinkable film is made of a copolymerized polyester resin having alternating structures of acid moieties which are derived from acid components and diol moieties which are derived from diol components, the acid components comprising terephthalic acid, and the diol components comprising isosorbide represented by Formula 1 and ethylene glycol. The copolymerized polyester heat shrinkable film has a shrinkage initiation temperature of equal to or more than 60° C., and a maximum heat shrinkage ratio of less than 2% at 60 to 70° C., and a maximum heat shrinkage ratio of 50 to 90% at 90 to 100° C. | 09-06-2012 |
20130111943 | NON-AZEOTROPIC MIXED REFRIGERANT CYCLE AND REFRIGERATOR EQUIPPED THEREWITH - A non-azeotropic mixed refrigerant cycle and a refrigerator equipped with the same are disclosed. The non-azeotropic mixed refrigerant cycle includes a first refrigerant tube to guide a refrigerant from a condenser to a first evaporator, a second refrigerant tube to guide the refrigerant from the first evaporator to a second evaporator, a third refrigerant tube to guide the refrigerant from the second evaporator to a compressor. A downstream portion of the first refrigerant tube is arranged within the second refrigerant tube, to form a first heat exchanger having a double tube structure. An upstream portion of the first refrigerant tube is arranged within the third refrigerant tube, to form a second heat exchanger having a double tube structure. Thus, the first and second heat exchangers are simplified. | 05-09-2013 |
20130295306 | POLYESTER RESIN COMPOSITION AND A PRODUCTION METHOD THEREFOR - Disclosed are a copolymeric polyester resin composition having outstanding colour stability (transparency) and a production method therefor. The copolymeric polyester resin composition comprises: between 95 and 99.99 percent by weight of a copolymeric polyester resin having a structure which is obtained by the copolymerisation of a dicarboxylic acid component and a diol component that comprises isosorbide, and in which there is repetition of a dicarboxylic acid moiety derived from the dicarboxylic acid component and a diol moiety derived from the diol component; and between 0.01 and 5 percent by weight of an antioxidant selected from the group consisting of hindered phenol-based antioxidants, phosphite-based antioxidants, thioether-based antioxidants and mixtures thereof. | 11-07-2013 |
Patent application number | Description | Published |
20090150717 | AVAILABILITY PREDICTION METHOD FOR HIGH AVAILABILITY CLUSTER - Provided is an availability prediction method for a high availability. The method includes calculating a basic survival probability that the other node survives until a failure on one node of two nodes constituting a cluster is fixed, and determining an optimal number of nodes meeting a preset reference availability probability by calculating an availability probability for a predetermined range of the number of nodes on the basis of the basic survival probability. The method determines the number of nodes in the high availability cluster so as to match a reference availability probability, and is able to accomplish an optimal configuration of a cluster by calculating the availability probabilities for combinations between active node and passive nodes and between head nodes and switches. | 06-11-2009 |
20090157894 | SYSTEM AND METHOD FOR DISTRIBUTING MULTIMEDIA STREAMING SERVICE REQUEST BASED ON WIDE AREA NETWORK - Provided are a system and a method for distributing multimedia streaming service request based on wide area network which can efficiently support multimedia streaming service in wide area network. The system for distributing multimedia streaming service request based on wide area network includes a user terminal, a wide area server, and a local server. The user terminal requests multimedia streaming service. The wide area server for selecting a local server which is disposed nearest to the user terminal and has node availability and service availability, and providing contents requested by the user terminal to the selected local server. The local server provides the multimedia streaming service to the user terminal using the contents provided from the wide area server. | 06-18-2009 |
20090158083 | CLUSTER SYSTEM AND METHOD FOR OPERATING THE SAME - Provided are a cluster system, which makes general nodes appear as if they provide seamless services without failure when seen from the outside, and a method for operating the cluster system. The cluster system for operating individual nodes in a distributed management manner includes a board server having a task board registered with a task list, an agent server for managing the task board, and a plurality of general server nodes for performing a corresponding task on the basis of the task list, among which a failed general server node is replaced with another normal general server node. | 06-18-2009 |
20090252277 | Upper Plenum Structure of Cooled Pressure Vessel for Prismatic Very High Temperature Reactor - An upper plenum structure of a cooled pressure vessel for a prismatic very high temperature reactor which secures a space for coolant to supply to a core and also supports an upper reflector located inside a graphite structure on top of the core. The upper plenum structure includes a cavity structure where the coolant goes down in the upper plenum structure, a plurality of upper reflector supports formed with the cavity and supporting the upper reflector located on top thereof, and a plurality of coolant distributing blocks. Each of the coolant distributing blocks is coupled with a bottom portion of a respective one of the upper reflector supports and is located on top of the core in order to distribute the coolant collected in a cavity, formed by the upper reflector support, to the core. The coolant distributing blocks cooperate with the upper reflector supports to define the cavity structure. | 10-08-2009 |
20110098995 | METHOD FOR DESIGNING CONCENTRIC AXIS DOUBLE HOT GAS DUCT FOR VERY HIGH TEMPERATURE REACTOR - Provided is a method of designing a coaxial dual-tube type hot gas duct for a very-high-temperature reactor. When determining the outer diameter of an inner tube and the inner diameter of a pressure tube, both of which defines an annular part of the hot gas duct having a dual-tube shape, one selected from hydraulic heads, flow rates, and hydraulic heads of very-high-temperature helium gas flowing to a very-high-temperature region and low-temperature helium gas flowing to a low-temperature region is taken into consideration as well as is a relation of about heat balance model, so that it is possible to minimize flow induced vibrations caused by the flow of a fluid. | 04-28-2011 |
20110145326 | WORKFLOW CUSTOMIZATION METHOD IN SaaS ENVIRONMENT - A method for providing a customized workflow service to offer a customized workflow software service in software as a service (SaaS) environment includes: providing currently set workflow information to a customized workflow software service client; and receiving a request for correction of workflow information from the client. Further, the method for providing the customized workflow service includes storing workflow information corrected in response to the request for correction of workflow information in a customized workflow database. | 06-16-2011 |
20120144454 | APPARATUS FOR MANAGING AUTHORIZATION IN SOFTWARE-AS-A-SERVICE PLATFORM AND METHOD FOR THE SAME - An authorization management apparatus and method in a software-as-a-service (SaaS) platform is disclosed. The present invention provides an automated authorization management apparatus and method which can efficiently reduce errors by applying a basic authority of a virtual tenant, which is predefined for an application to be provided to a tenant, as it is to the tenant requesting the use of the application. Moreover, the present invention provides an authorization management apparatus and method which can provide services customized to various tenants by defining a role appropriate for the condition of each tenant and allocating an application resource for each role. The authorization management apparatus includes a user application access control device, an access control device for a user's resource, a virtual tenant authority definition device, and a tenant authority definition device. | 06-07-2012 |
20130305219 | APPARATUS AND METHOD FOR PROVIDING CUSTOM SOFTWARE, AND METHOD FOR SOFTWARE CUSTOMIZATION - The apparatus for providing custom software: transmits a core code to a terminal to be used for software customization by using the core code divided into a plurality of lines; receives a custom code corresponding to a software customization result from the terminal; and stores software information separated from the core code after extracting the custom software information including content altered in the coed code from the custom code. | 11-14-2013 |
20150146134 | LIQUID CRYSTAL COMPOSITION AND DISPLAY DEVICE INCLUDING THE SAME - Provided are a liquid crystal display device and a liquid crystal display device including the same. The liquid crystal display device includes a first substrate, a second substrate facing and separated from the first substrate, a liquid crystal layer disposed between the first and second substrates, and a light source providing light to the liquid crystal layer. The liquid crystal layer includes cholesteric liquid crystal and a dichromic dye. The cholesteric liquid crystal includes nematic liquid crystal and an optically active material, and selectively reflects light having a certain wavelength, and the dichromic dye transmits light selectively reflected from the cholesteric liquid crystal. An amount of the dichromic dye is about 0.01 to about 10 wt % based on a total amount of the liquid crystal layer. | 05-28-2015 |
20150146153 | DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME - Provided are a display device and a method of manufacturing the same. The display device includes a first substrate, a second substrate facing the first substrate and separated from the first substrate, a plurality of liquid crystal parts disposed between the first and second substrates, and separated in a horizontal direction from each other, spacers for separating the liquid crystal parts between the first and the second substrates, and immobilization patterns disposed in each of the liquid crystal parts, and including an optically active material. | 05-28-2015 |
20150152036 | METHOD OF PREPARING ESTER COMPOUND AND ESTER COMPOUND PREPARED THEREBY - This invention relates to a method of preparing an ester compound, including adding carboxylic acid to a mixture of glycerol and acetone in the presence of a sulfuric acid catalyst and applying an ultrasonic wave to induce an esterification reaction, and to an ester compound prepared thereby. | 06-04-2015 |
20150246861 | METHOD FOR PREPARING ALLYL ALCOHOL - Disclosed is a method for preparing allyl alcohol, wherein glycerol and formic acid are reacted under specific synthesis conditions, thus remarkably increasing the the concentration of allyl alcohol in the liquid reaction products and minimizing the production of allyl formate byproduct and the production of unreacted formic acid. | 09-03-2015 |
20150361021 | HETEROGENEOUS CATALYST FOR PREPARING ACRYLIC ACID FROM ALLYL ALCOHOL, AND METHOD OF PREPARING ACRYLIC ACID FROM ALLYL ALCOHOL USING THE SAME - The present invention relates to a heterogeneous catalyst for preparing acrylic acid from allyl alcohol, and a method of preparing acrylic acid from allyl alcohol using the same. More particularly, the present invention relates to a method of preparing acrylic acid from allyl alcohol at a high yield by performing a liquid phase reaction in the presence of a heterogeneous catalyst including gold supported on a carrier. | 12-17-2015 |
20150362785 | DISPLAY DEVICE - Provided is a display device. The display device includes a first electrode, a second electrode facing and separated from the first electrode, a liquid crystal layer filling up a space between the first and second electrodes, an organic layer disposed between the second electrode and the liquid crystal layer, and a dye disposed in the liquid crystal layer and fixed to the organic layer. | 12-17-2015 |
Patent application number | Description | Published |
20140003264 | METHOD FOR DETERMINING PAIR OF TARGET RECEIVER AND TARGET TRANSMITTER DISTRIBUTEDLY AND CONCENTRATEDLY USING COOPERATION HEADER IN A MULTI-HOP NETWORK PERFORMING INTERFERENCE NEUTRALIZATION | 01-02-2014 |
20140112340 | SOURCE, RELAY, AND DESTINATION EXECUTING COOPERATION TRANSMISSION AND METHOD FOR CONTROLLING EACH THEREOF - A method for controlling a first node transmitting a transmission message to a plurality of second nodes may be provided. The method includes dividing the transmission message into at least one sub-message, encoding the at least one sub-message to a data stream, determining a first transmission direction of the data stream toward at least one of the plurality of second nodes, based on a polynomial of a channel gain between the first node and the at least one of the plurality of second nodes, and transmitting the data stream to the at least one of the plurality of second nodes, based on the determined first transmission direction. | 04-24-2014 |
20140133382 | BASE STATION AND A PLURALITY OF MEMBER NODES FOR TRANSMITTING AND RECEIVING NETWORK CODING BASED MULTICAST TRAFFIC - Provided are a base station and a plurality of member nodes for transmitting and receiving network coding based multicast traffic. The base station may transmit multicast traffic, and the member node may transmit an acknowledgement (ACK) signal based on received multicast traffic. A determination made be made as to whether the multicast traffic is to be retransmitted, based on a number of member nodes transmitting ACK signals. | 05-15-2014 |
20140146684 | METHOD AND SYSTEM FOR RELAYING DATA USING A PLURALITY OF RELAY NODES - Provided is a method and system for relaying data using a plurality of relay nodes. The method may include obtaining a first channel matrix related to a first-hop channel and a second channel matrix related to a second-hop channel, generating an effective interference channel matrix based on the first channel matrix and the second channel matrix, and calculating a null space vector of the effective interference channel matrix. | 05-29-2014 |
20140171094 | METHOD OF MULTI-HOP COOPERATIVE COMMUNICATION FROM TERMINAL AND BASE STATION AND NETWORK FOR MULTI-HOP COOPERATIVE COMMUNICATION - A method of multi-hop cooperative communication includes recognizing a plurality of relays capable of cooperating with one another to amplify or quantize and forward mixed signals received from a plurality of different nodes, selecting a transmission mode from a direct mode for transmission from a base station directly and a cooperation mode for transmission from the base station via the plurality of relays, transmitting data from the base station directly to a terminal through a first radio resource in the direct mode in response to the selected transmission mode being the direct mode, and transmitting data from the base station to the terminal via the plurality of relays through a second radio resource in the cooperation mode in response to the selected transmission mode being the cooperation mode. | 06-19-2014 |
20140254460 | APPARATUS AND METHOD FOR TRANSMITTING DATA BASED ON COOPERATION OF MEMBER NODES BELONGING TO MULTICAST GROUP - Methods and apparatuses for transmitting data based on cooperation of member nodes belonging to a multicast group is provided. The method may include transmitting multicast packets through a first communication network to member nodes belonging to a multicast group and the member nodes receiving the same multicast packets; and retransmitting the multicast packets upon determination that no member node has completed reception of the multicast packets. | 09-11-2014 |
20140269548 | METHOD TO MANAGE INTERFERENCE BETWEEN IDLE DEVICES - A method and apparatus to manage interference between idle devices is provided. The method may include determining a pair of a target transmission node and a target reception node among nodes included in a multi-hop network. The method includes determining idle devices cooperating to manage interference in the communication based on a transmission mode determined for communication. The method determines and transmitting coordination information for communication between the pair of the target transmission node and the target reception node, to nodes participating in the communication and the cooperating idle devices. | 09-18-2014 |
20140355513 | METHOD AND APPARATUS TO CONTROL INTERFERENCE IN MULTI-HOP NETWORK AND RELAY NODE AND NODE PAIR USING THE METHOD - A method and apparatus to control interference in a relay node are provided and include simultaneously receiving a symbol from source nodes, adjusting channel coefficients; and relaying the symbol to destination nodes with adjusted channel coefficients. The simultaneously receiving and the relaying are performed during a symbol transmission process between the source and destination nodes. | 12-04-2014 |
20140355514 | METHOD OF CONTROLLING INTERFERENCE IN MULTI-HOP NETWORK BASED ON MIMO SYSTEM AND RELAY NODE AND NODE PAIR USING THE METHOD - A method of controlling interference of relay nodes and node pairs in a multi-hop network, includes relaying signals received from source nodes among the node pairs to destination nodes pairing with the source nodes, and cancelling a part of interference signals between the node pairs by controlling channel coefficients of the relay nodes. The destination nodes are configured to cancel residual interference signals among the interference signals, using the signals received by the destination nodes. | 12-04-2014 |
20150036555 | RADIO TRANSCEIVER FOR VIRTUAL FULL DUPLEX COMMUNICATION USING UNUSED RESOURCES - A radio transceiver and corresponding method include a transmission unit configured to transmit an uplink signal to a base station. A receiving unit is configured to receive a relay signal, which comprises the uplink signal and a downlink signal received from the base station. An extraction unit is configured to extract the downlink signal from the relay signal based on the uplink signal. | 02-05-2015 |
20150043385 | COMMUNICATION METHOD AND APPARATUS FOR DEVICE-TO-DEVICE (D2D) - Provided are a communication method and apparatus for device-to-device (D2D). More particularly, the communication method for D2D includes configuring a network topology using at least one cooperating base station to communicate among devices included in multiple heterogeneous cells, creating an association between multiple device pairs and at least one base station based on configuring the network topology, and determining a cooperation context for communication among the multiple device pairs is provided. The communication apparatus carries out such a method. | 02-12-2015 |
Patent application number | Description | Published |
20100261426 | COMMUNICATION DEVICE AND RELAY DEVICE - A communication device that may select a relay node from a plurality of relay nodes, and be used as a signal receiving node through the selected relay node is provided. Additionally, a relay device that may be used as a relay node to receive and broadcast signals is provided. | 10-14-2010 |
20100322140 | RELAY-BASED COMMUNICATION SYSTEM AND METHOD PROCESSING SIGNAL WITHOUT CYCLIC PREFIX - A relay-based communication system and method processing a signal without a cyclic prefix is provided. An apparatus for generating a relay signal includes a signal receiving unit which receives a source signal transmitted from a source node to a relay node and detects a received signal, a signal conversion unit which extracts samples corresponding to a first time duration from the received signal, sums the received signal and the extracted samples in a second time duration, and generates a converted received signal, a relay signal generation unit which generates a relay signal cooperating with the source signal based on the converted received signal according to a space frequency block code (SFBC) scheme, and a signal transmission unit which transmits the generated relay signal to a destination node. | 12-23-2010 |
20110009125 | MOBILE STATION, BASE STATION, AND OPERATION METHOD OF MOBILE STATION - Provided are a mobile station that may determine a Precoding Matrix Index (PMI) of a serving channel, generate Channel State Information (CSI) based on only interference channels, and feed back the PMI and the CSI to a serving base station, a base station that may design a precoding vector based on the PMI and the CSI, and an operation of the mobile station. Also, provided are a mobile station that may determine a PMI based on only interference channels, generate CSI of a serving channel, and feed back the PMI and the CSI to a serving base station, a base station that may design a precoding vector based on the PMI and the CSI, and an operation method of the mobile station. | 01-13-2011 |
20110045782 | DEVICES AND METHODS FOR TRANSMITTING AND RECEIVING DATA USING PRECODING MATRIX - A communication system to feed back an index of a precoding matrix is provided. A terminal may feed back an index of an optimal precoding matrix based on estimated channel status. A base station may transmit data to the terminal based on the index of the precoding matrix received from the terminal. | 02-24-2011 |
20110075580 | SYSTEM AND METHOD FOR DISTRIBUTED CONTROL OF SPECTRUM POWER IN A MULTI-CELL COMMUNICATION SYSTEM - A system and method for distributed control of spectrum power in a multi-cell communication system are provided. A plurality of cells included in a multi-cell communication system may be grouped into a plurality of groups. Cells included in a first group may iteratively calculate spectrum powers to perform dynamic spectrum management (DSM) scheme in calculation sub-frames. The cells included in the first group may also perform a user scheduling. Spectrum powers determined by cells included in a second group and user scheduling results of the cells in the second group may be held static. | 03-31-2011 |
20110103503 | METHOD AND APPARATUS FOR CONTROLLING DYNAMIC CHANNEL FEEDBACK IN A MIMO NETWORK - A communication method and apparatus for coordinated multi-point (CoMP) transmission, is provided. Sizes of codebooks for a plurality of base stations may be adjusted based on a status of channels between a target terminal and a plurality of base stations. The terminal feeds back, to at least one of the plurality of base stations, channel direction information (CDI) including a number of bits of feedback. | 05-05-2011 |
20110159881 | Communication System Using Joint Leakage Suppression Scheme with Low Complexity - A communication method for at least one mobile station that includes a target mobile station that performs a Cooperative Multi-Point (CoMP) communication with at least two base stations, is provided. The communication method includes determining a beamforming vector used by the at least two base stations based on channel vectors and at least one channel matrix such that a signal-to-leakage-plus-noise-ratio (SLNR) for a target antenna from among antennas of a target mobile station is maximized. A Cholesky factorization may be used to determine an optimal beamforming vector with a low complexity. | 06-30-2011 |
20110159897 | SYSTEM AND METHOD USING RATE SPLIT SCHEME BASED ON COOPERATION BETWEEN RECEIVERS - Each of a first transmitter and a second transmitter uses a rate split scheme. Each of the first transmitter and the second transmitter may transmit at least four sub-messages, and different transmission powers may be allocated to the at least four sub-messages. Also, each of receivers may cooperate with each other, may share sub-messages that act as interferences, and may extract desired messages using the shared sub-messages. | 06-30-2011 |
20110177834 | COMMUNICATION APPARATUS AND PRECODING METHOD BASED ON MULTIPLE CELLS AND MULTIPLE USERS - Provided are a communication apparatus that may generate a precoding matrix including precoding vectors to cancel or align interference existing in a plurality of terminal devices based on location of the terminal devices, and a terminal device that may estimate a channel formed between the terminal device and the communication apparatus to cancel or align interference signals. | 07-21-2011 |
20110195704 | COMMUNICATION SYSTEM OF PERFORMING UPLINK COMMUNICATION AND DOWNLINK COMMUNICATION USING OVERLAPPING RADIO RESOURCE - A communication system performs an uplink communication and a downlink communication using respective radio resources that at least partially overlap each other in both time and frequency, which may cause interference to occur in at least one downlink terminal due to at least one uplink terminal. The at least one uplink terminal and the at least one downlink terminal may process the interference according to a rate split scheme, an interference control scheme, and the like. Interference occurring between at least one transmit antenna and at least one receive antenna of a base station may be processed according to an echo cancellation scheme and the like. | 08-11-2011 |
20110218000 | MULTI-CELL COMMUNICATION APPARATUS AND METHOD USING RATE-SPLITTING SCHEME AND TRANSMISSION FRAME - Provided is a multi-cell communication system using a rate-splitting scheme and a transmission frame for the multi-cell communication system. The multi-cell communication system may determine whether to perform a rate-splitting based on channel information of a macro base station and a femto base station in a multi-cell environment. The multi-cell communication system may allocate a power or a bandwidth to a message to be transmitted based on the channel information. In the multi-cell environment, a terminal may receive MAP information from a base station and may decode the received MAP information, determining a base station that performs the rate-splitting. | 09-08-2011 |
20110235750 | BEAMFORMING METHOD AND APPARATUS USING A RATE SPLITTING SCHEME IN A MULTI-CELL MULTI-ANTENNA INTERFERENCE CHANNEL - A beamforming method and apparatus for using a rate splitting scheme in a multi-cell multi-antenna system, are provided. The multi-cell multi-antenna system determines transmission and reception beamforming vectors, thereby being divided into a plurality of pairs of single input and single output (SISO) interference channels. A rate splitting scheme may be applied to each of the plurality of pairs. | 09-29-2011 |
20110305293 | COGNITIVE INTER-CELL INTERFERENCE CONTROL METHOD AND APPARATUS - Provided is a cognitive inter-cell interference control method and apparatus. Inter-cell interference may be measured based on various methods in order to recognize an interference channel, and an appropriate interference control algorithm may be applied to the interference channel by modeling based on overhead. Accordingly, interference may be controlled. | 12-15-2011 |
20110306324 | COMMUNICATION METHOD OF A MOBILE TERMINAL AND METHOD OF ADVERTISING TO A MOBILE TERMINAL - A communication method of a macro base station including reporting information about a broadcast channel section in order to identify a femtocell in the macrocell, is provided. The macro base station receives position information of a mobile terminal and a request for information about neighboring femto base stations from the mobile terminal, when the mobile terminal identifies an accessible femto base station in the broadcast channel section. The macro base station generates a list of the neighboring femto base stations and information about the neighboring femto base stations based on the position information of the mobile terminal, and transmits the list and the information about the neighboring femto base stations to the mobile terminal. | 12-15-2011 |
20120034925 | COMMUNICATION METHOD OF MACRO BASE STATION AND MICRO BASE STATION FOR INTERFERENCE CONTROL - A communication method of a micro base station for interference control is provided. The communication method includes determining whether to perform a handover of macro user equipment from a macro base station to a micro base station based on interference from the macro user equipment served by the macro base station to micro user equipment served by the micro base station, searching for an index of a resource allocable to the macro user equipment, and transmitting, to the macro base station, a handover request message including the index of the resource allocable to the macro user equipment. | 02-09-2012 |
20120040706 | SYSTEM AND METHOD FOR ALIGNING INTERFERENCE IN UPLINK - Provided is a method of generating a transmit beamforming vector and a receive beamforming vector to substantially eliminate the effect of interference transmitted from macro terminals to a pico base station in a hierarchical cell environment. Also, provided is a method of selecting, from a plurality of macro terminals, a macro terminal for transmitting data to a macro base station. | 02-16-2012 |
20120077485 | METHOD AND APPARATUS FOR DETERMINING DOWNLINK BEAMFORMING VECTORS IN HIERARCHICAL CELL COMMUNICATION SYSTEM - Provided is a method and apparatus for determining a downlink beamforming vector in a hierarchical cell communication system. Small base stations may determine transmit beamforming vectors of the small base stations so that interference from the small base stations may be reduced in a macro terminal. A macro terminal and small terminals may determine receive beamforming vectors based on the transmit beamforming vectors of the small base stations. A macro base station may determine a transmit beamforming vector based on effective channels to terminals using the receive beamforming vectors of the terminals. | 03-29-2012 |
20120122502 | METHOD AND APPARATUS OF CONTROLLING INTER CELL INTERFERENCE BASED ON COOPERATION OF INTRA CELL TERMINALS - Provided is a method and apparatus for controlling inter cell interference based on cooperation between intra cell terminals. The intra cell terminals may exchange interference channel information, and may determine a receive beamforming vector based on the exchanged interference channel information. At least one intra cell terminal may feed back, to a neighboring cell base station, information associated with an effective interference channel using the receive beamforming vector. A base station may determine a transmit beamforming vector based on information associated with an effective interference channel using receive beamforming vectors of neighboring cell terminals that are received from at least one neighboring cell terminal. | 05-17-2012 |
20120142345 | COOPERATIVE COMMUNICATION METHODS AND A DEVICE FOR A TARGET TERMINAL AND A COOPERATIVE TERMINAL - Provided is a cooperative communication technology of a target terminal and a cooperative terminal. In an environment in which interference exists between cells, cooperation between terminals may be performed in order to improve quality of signals that are received from a base station. | 06-07-2012 |
20120155300 | COMMUNICATION METHOD OF A BASE STATION AND A TERMINAL - Provided is a communication method of a base station and a terminal for enhancing a recovery performance of a signal using a feedback control message. The feedback control message may include information about a target received power at the base station with respect to feedback information of each of a plurality of terminals and information associated with a feedback mode of the feedback information. | 06-21-2012 |
20120157139 | COMMUNICATION METHOD OF NEIGHBORING TERMINAL AND TARGET TERMINAL - Provided is a communication method of a neighboring terminal and a target terminal in which a cooperative terminal that has a better SINR or a better channel condition provides help to a target terminal through cooperation between terminals based on a random access mode or a scheduling mode, so that an SINR of the target terminal is improved without help from a base station. | 06-21-2012 |
20120214497 | APPARATUS AND METHOD FOR HIERARCHICAL RATE SPLITTING IN HIERARCHICAL CELL COMMUNICATION SYSTEM - Provided is a hierarchical rate splitting method and apparatus in a hierarchical cell communication system. An upper node or a macro base station may adaptively determine a hierarchical splitting mode based on a channel condition of a channel between the macro base station and a macro terminal and/or a performance of pico terminals in comparison to a performance of the macro terminal. | 08-23-2012 |
20130039256 | RELAY AND METHOD FOR PERFORMING NETWORK CODING - Provided is a method and relay that performs network coding. The relay may determine transmission and/or receiving beamforming vectors for terminals so as to align effective channels of a plurality of transmit-and-receive pairs into different dimensions. | 02-14-2013 |
20130039265 | RELAY AND TERMINAL IN MULTI-PAIR TWO-WAY RELAY NETWORK AND COMMUNICATION METHOD THEREOF - A relay and a terminal in a multi-pair two-way network and a communication method thereof is provided. A communication method of a relay of a network including K transmit-and-receive pairs including a plurality of terminals, with the relay including M antennas and each of the terminals including N antennas, including accessing a codebook including codewords, the codebook being configured to enable effective channels from the K transmit-and-receive pairs to the relay to be aligned in independent dimensions, respectively, when the K transmit-and-receive pairs transmit signals simultaneously, each of the effective channels being aligned based on one of the codewords, selecting one or more of the codewords indicating the effective channels from the K transmit-and-receive pairs to the relay, respectively, and transmitting information associated with the selected codewords to corresponding ones of the K transmit-and-receive pairs. | 02-14-2013 |
20130089023 | RELAY NODE AND METHOD FOR MANAGING INTERFERENCE IN A MULTI-HOP NETWORK - A method and system of a relay node managing interference in a multi-hop network and a relay node that manages interference is provided. The relay node may determine whether an interference neutralization condition for neutralizing interference among pairs of transmitting nodes and receiving nodes is satisfied, select one of a full interference neutralization and a partial interference neutralization, based on a result of the determination and perform the selected interference neutralization with respect to the pairs of the transmitting nodes and the receiving nodes. | 04-11-2013 |
20130182689 | SYSTEM AND METHOD USING A RATE SPLIT SCHEME BASED ON COOPERATION BETWEEN RECEIVERS - Each of a first transmitter and a second transmitter uses a rate split scheme. Each of the first transmitter and the second transmitter may transmit at least four sub-messages, and different transmission powers may be allocated to the at least four sub-messages. Also, each of receivers may cooperate with each other, may share sub-messages that act as interferences, and may extract desired messages using the shared sub-messages. | 07-18-2013 |
20130346212 | COMMUNICATION METHOD OF A MOBILE TERMINAL AND METHOD OF ADVERTISING TO A MOBILE TERMINAL - A communication method of a macro base station including reporting information about a broadcast channel section in order to identify a femtocell in a macrocell of the macro base station set in a downlink broadcast channel of the macrocell, is provided. The macro base station receives position information of a mobile terminal and a request for information about neighboring femto base stations from the mobile terminal, when the mobile terminal identifies an accessible femto base station among the at least one femto base station in the broadcast channel section. The macro base station generates a list of the neighboring femto base stations of the mobile terminal and information about the neighboring femto base stations based on the position information of the mobile terminal, and transmits the list of the neighboring femto base stations and the information about the neighboring femto base stations to the mobile terminal. | 12-26-2013 |