Patent application number | Description | Published |
20120212488 | GRAPHIC PROCESSOR AND METHOD OF EARLY TESTING VISIBILITY OF PIXELS - A graphic processor includes a rasterizer configured to process vertex data to generate fragment data based on a maximum depth value, a minimum depth value, and a mask bit of each pixel included in one tile, each mask bit indicating whether each pixel is drawn or not, the vertex data including three dimensional information of the pixels, a pixel shader configured to process the fragment data to generate color data, and a raster operation unit configured to convert the color data to pixel data to be displayed. | 08-23-2012 |
20140347357 | GRAPHIC PROCESSING UNIT AND TILE-BASED RENDERING METHOD - A graphics processing unit (GPU) is provided. The GPU includes a tiling unit and a rasterizer. The tiling unit is configured to determines primitives touching a corresponding tile in tiles in an image frame, to determine at least one representative primitive of the primitives using a depth value of each of the primitives, and to generate visible primitives of the primitives for the corresponding tile using a depth value of the at least one representative primitive. The rasterizer is configured to rasterize the at least one representative and the visible primitives. | 11-27-2014 |
20150015580 | TESSELLATION METHOD FOR ASSIGNING A TESSELLATION FACTOR PER POINT AND DEVICE PERFORMING THE METHOD - A tessellation method includes assigning a tessellation factor to each of a plurality of points in a patch and generating, in the vicinity of a first point of the plurality of points, at least one new point based on a first tessellation factor assigned to the first point. The at least one first new point corresponds to the first point. | 01-15-2015 |
20150022520 | TESSELLATION DEVICE INCLUDING CACHE, METHOD THEREOF, AND SYSTEM INCLUDING THE TESSELLATION DEVICE - A tessellation method includes determining whether a previous tag the same as a current tag of a current patch is stored in a cache, and transmitting a previous tessellation pattern corresponding to the previous tag stored in the cache to a domain shader when a cache hit occurs. The method may further include, when a cache miss occurs, generating a current tessellation pattern corresponding to the current patch using a tessellator and transmitting the generated current tessellation pattern to the domain shader, and storing the generated current tessellation pattern in the cache. | 01-22-2015 |
20150042649 | METHOD OF GENERATING TESSELLATION DATA AND APPARATUS FOR PERFORMING THE SAME - A method of generating tessellation data include analyzing patch data of each of a plurality of patches; generating shared data that is shared by the patches, non-shared data that are not shared by the patches, and attribute data on an attribute of control points of each of the patches from the patch data according to a result of the analyzing; and compressing the non-shared data and the attribute data. | 02-12-2015 |
20150042650 | GRAPHICS PROCESSING UNIT, METHOD OF OPERATING THE SAME, AND DEVICES INCLUDING THE SAME - A method of operating a graphics processing unit includes determining, based on input data, whether to perform a tiling operation before or after a tessellation operation and performing the tiling operation according to the determination result. Performing the tiling operation after the tessellation operation if the input data is not a patch, and if a geometry of the patch is at the out-side of a convex hull defined by control points of the patch. Performing the tiling operation after the tessellation operation if a geometry of a tessellated primitive corresponding to the patch changes according to a shading operation. | 02-12-2015 |
20150138197 | METHOD FOR DOMAIN SHADING, AND DEVICES OPERATING THE SAME - A method for domain shading may include analyzing graphics state data, and generating all first primitives through a single-pass domain shading or generating only second primitives which are visible among the first primitives through a two-pass domain shading based on a result of the analysis. | 05-21-2015 |
20150228111 | GRAPHICS PROCESSING UNIT - A graphics processing unit (GPU) that performs rendering in units of tiles includes a coefficient generator that produces an interpolation coefficient based on coordinates of vertices of a primitive included in a first tile and a second tile; an interpolator that produces barycentric coordinates in respective pixels for the first tile of the primitive and pixel values in the first tile corresponding to the primitive, based on the interpolation coefficient, and a storage configured to store the interpolation coefficient. The GPU produces barycentric coordinates in and pixel values of respective pixels for a second tile of the primitive, based on the interpolation coefficient stored in the storage. | 08-13-2015 |
20150234664 | MULTIMEDIA DATA PROCESSING METHOD AND MULTIMEDIA DATA PROCESSING SYSTEM USING THE SAME - A multimedia data processing method is provided which includes providing a conflict detection unit at a load/store pipeline unit; generating, by the conflict detection unit, speculative conflict information, which is used to predictively determine whether an address of a load/store instruction of a current thread causes a conflict miss before a cache access operation is performed by performing a history search for load/store instruction addresses of previous threads without referring to a cache memory; and storing information of the current thread directly in a standby buffer without an execution of the cache access operation in response to the generated speculative conflict information indicating the conflict miss. | 08-20-2015 |
20160071317 | GRAPHICS PROCESSING UNIT (GPU) INCLUDING SUBDIVIDER AND DEVICE INCLUDING THE GPU - A graphics processing unit (GPU) includes a subdivider connected between a vertex shader and a domain shader. The subdivider receives first points of a first patch from the vertex shader, computes and assigns a tessellation factor for the first patch, generates second patches by refining the first patch using the first points and the tessellation factor, determines whether each of the second patches satisfies a tessellation criterion, and feeds back a patch that does not satisfy the tessellation criterion among the second patches to an input of the subdivider as a first feedback patch. | 03-10-2016 |
20160110914 | GRAPHIC PROCESSING UNIT, A GRAPHIC PROCESSING SYSTEM INCLUDING THE SAME, AND AN ANTI-ALIASING METHOD USING THE SAME - A graphic processing unit includes a geometry processing unit and a rendering processing unit. The geometry processing unit is configured to receive vertexes and to generate at least one primitive using the vertexes. The rendering processing unit is configured to convert the generated at least one primitive into fragments, to perform fragment shading on the converted fragments, and to perform anti-aliasing on the fragments on which the fragment shading has been performed. The rendering processing unit performs the anti-aliasing on first color data and second color data that is different from the first color data using different operations from each other. | 04-21-2016 |
Patent application number | Description | Published |
20120066396 | APPARATUS AND METHOD FOR SUPPORTING PERIODIC MULTICAST TRANSMISSION IN MACHINE TO MACHINE COMMUNICATION SYSTEM - A method and apparatus for effectively transmitting periodically generated group data of a serving group in a Machine to Machine (M2M) communication system are provided. A method includes determining whether a persistent resource for group data of an M2M communication service group is allocated, if the persistent resource is not allocated, configuring the persistent resource for the group data and transmitting allocation information for the persistent resource to at least one Subscriber Station (SS) registered to the service group, and multicasting the group data to the at least one SS by using the persistent resource. | 03-15-2012 |
20120066572 | METHOD AND APPARATUS FOR MAP TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM - An operating method of a base station for transmitting MAP information in a wireless communication system includes determining a seed value for randomizing MAP information bits, generating a Media Access Control (MAC) control message including the seed value and a Station IDentifier (STID), and transmitting the MAC control message to a mobile station. Hence, the assignment A-MAP IE can be transmitted more safely. | 03-15-2012 |
20120093107 | APPARATUS AND METHOD FOR DYNAMICALLY ALLOCATING RESOURCES IN COMMUNICATION SYSTEM - An apparatus and method dynamically allocate resources in a communication system. An operation method of a base station (BS) dynamically allocates resources in a network associated with a first communication system and a second communication system. The method includes, in a start position of a subframe within a frame of the second communication system, generating information on a following subframe for the second communication system's subframe existing in the start position, in a frame structure that supports the coexistence of the first communication system and the second communication system. The method also includes inserting the generated information on the following subframe into a control signal transmitted through a predefined region within the second communication system's subframe existing in the start position and transmitting the control signal to a mobile station associated with the second communication system. | 04-19-2012 |
20120115535 | METHOD AND APPARATUS FOR UPLINK POWER CONTROL USING RANGING SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for uplink power control using a ranging signal in a wireless communication system are provided. The method includes transmitting ranging channel information to a pico Base Station (BS), receiving power control information on a macro terminal from the pico BS, controlling a transmit power strength for the macro terminal based on the power control information, and instructing the macro terminal to control a transmit power to the controlled strength. | 05-10-2012 |
20120134329 | APPARATUS AND METHOD FOR SUPPORTING PERIODIC MULTICAST TRANSMISSION IN MACHINE TYPE COMMUNICATION SYSTEM - An apparatus and a method for supporting periodic multicast transmission in a machine type communication system are provided. A method for operating a Base Station (BS) in a communication system includes allocating persistent resources for data transmission of a service group, selecting at least one MS to feed back a success/failure in receiving a map including the persistent resource allocation information, among Mobile Stations (MSs) to receive the persistent resource allocation information, and transmitting the map including the persistent resource allocation information and information indicating the selected MS. | 05-31-2012 |
20120196561 | METHOD AND APPARATUS FOR SUPPORTING MOBILE STATION DISCONNECTED FROM A BASE STATION IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus support a Mobile Station (MS) located in a collapsed cell area to be disconnected from a Base Station (BS) in a wireless communication system. A method of an MS for supporting an disconnected MS disconnected from a BS in a wireless communication system includes receiving a rescue signal from the disconnected MS; collecting information to determine a support MS for the disconnected MS; and transmitting the collected information to a serving BS. | 08-02-2012 |
20120196624 | METHOD AND APPARATUS FOR REPORTING LOCATION OF MOBILE STATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for reporting location information of a Mobile Station (MS) through a ranging procedure in a wireless communication system are provided. A Base Station (BS) transmits, to the MS, partition information representing a plurality of partition regions constituting the BS cell coverage. Upon receiving from the MS a ranging code belonging to one ranging code subset among a plurality of ranging code subsets corresponding to the plurality of partition regions based on the partition information, the BS determines location information of the MS depending on the partition region corresponding to the ranging code subset to which the received ranging code belongs, making it possible to notify the network of the MS's location information without the need to define a separate signaling procedure. | 08-02-2012 |
20120231830 | METHOD AND APPARATUS FOR INITIAL RANGING IN WIRELESS COMMUNICATION SYSTEM INCLUDING HETEROGENEOUS NETWORK - An apparatus and method for initial ranging in a wireless communication system including a heterogeneous network. An operation of a terminal includes selecting a serving cell considering a biased value of a base station applying range expansion. The operation also includes receiving ranging code classification information and threshold information associated with the serving cell. The operation further includes, if a channel quality with the serving cell is less than the threshold, selecting one a plurality of poor-expected-ranging codes indicated by the ranging code classification information, and performing initial ranging using the selected poor-expected-ranging code. | 09-13-2012 |
20120320776 | METHOD AND APPARATUS FOR OBTAINING SYNCHRONIZATION FOR COMMUNICATION BETWEEN DEVICES - A method and an apparatus for obtaining synchronization of a terminal for communication between devices when a base station collapses are provided. The method includes, when a preamble signal is not received from the base station, maintaining a first synchronization for a predetermined time using a timer, transmitting a first preamble signal at a first synchronization point, performing a synchronization procedure with at least one neighbor terminal based on the first preamble signal, and, after the synchronization procedure, performing communication with the at least one neighbor terminal. In addition, when a preamble signal is not received from a base station, a first preamble signal from a relevant neighbor terminal is monitored for a predetermined time. When the first preamble signal is not received from the relevant neighbor terminal for the predetermined time, a second preamble signal is transmitted at an arbitrary point. | 12-20-2012 |
20130021952 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING INFORMATION FOR RANDOM ACCESS IN WIRELESS COMMUNICATION SYSTEM - A method and a Base Station (BS) of transmitting information for Random Access (RA) by a base station in a wireless communication system are provided. The BS generates RA information for beam alignment between the base station and each of a plurality of mobile terminals based on a number of reception beam forming patterns of the base station used for each of one or more RA channels and broadcasts the RA information to the plurality of mobile terminals. The RA information comprises information related to the number of reception beam forming patterns of the base station used for each of the one or more RA channels. | 01-24-2013 |
20130039345 | APPARATUS AND METHOD FOR ADAPTIVE BEAM-FORMING IN WIRELESS COMMUNICATION SYSTEM - Apparatuses and methods for maintaining an optimal beam direction in a wireless communication system are provided. The method for operating a receiving node in a wireless communication system includes, determining a first transmission beam is determined as a preferred transmission beam using a plurality of reference signals transmitted by a transmitting node, generating preferred transmission beam information, transmitting the preferred transmission beam information to the transmitting node, receiving transmissions from the transmitting node via the first transmission beam, and determining whether a change of a transmission beam is necessary. When the change of the transmission beam is determined to be necessary, generating a beam change request and transmitting the beam change request to the transmitting node. | 02-14-2013 |
20130040684 | METHOD AND APPARATUS FOR BEAM TRACKING IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for tracking a beam in a wireless communication system are provided. In the method, a plurality of downlink reference signals are received from a base station and at least one downlink transmission beam pattern is determined. A plurality of uplink reference signals are transmitted to the base station, each includes identifier information corresponding to the determined at least one downlink transmission beam pattern. ACKnowledgement (ACK) information indicating that the base station has successfully received an identifier included in the identifier information corresponding to the determined at least one downlink transmission beam pattern from identifier information corresponding to an uplink transmission beam pattern and that the plurality of uplink reference signals from the base station is received. | 02-14-2013 |
20130045690 | APPARATUS AND METHOD FOR SUPPORTING MULTI-ANTENNA TRANSMISSION IN BEAMFORMED WIRELESS COMMUNICATION SYSTEM - An apparatus and method for supporting diversity in a beamformed wireless communication system. A method for transmitting a signal in a transmit end includes determining Receive (Rx) beamforming capability information of a receive end, receiving channel information on at least one Transmit (Tx) beam pattern from the receive end, determining at least one Tx beam pattern for transmitting a signal to the receive end, in consideration of Rx beamforming support information of the receive end and the channel information on the at least one Tx beam pattern, and transmitting a signal to the receive end using the at least one Tx beam pattern for transmitting the signal to the receive end. | 02-21-2013 |
20130059619 | APPARATUS AND METHOD FOR SELECTING BEST BEAM IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for selecting the best beam in a wireless communication system are provided. An operation of a Base Station (BS) includes repeatedly transmitting reference signals beamformed with a first width, receiving a feedback signal indicating at least one preferred-beam having the first width from at least one terminal, determining a direction range within which reference signals beamformed with a second width are to be transmitted and a transmission pattern, based on the at least one preferred-beam having the first width, repeatedly transmitting the reference signals beamformed with the second width within the determined direction range according to the transmission pattern, and receiving a feedback signal indicating at least one preferred-beam having the second width from the at least one terminal. | 03-07-2013 |
20130064239 | APPARATUS AND METHOD FOR SYNCHRONIZING AND OBTAINING SYSTEM INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A base station and terminal use methods of obtaining synchronization and system information in a wireless communication system. An operation of a base station includes generating a synchronization signal to be transmitted through a Synchronization Channel (SCH), generating a broadcast signal to be transmitted through a Broadcast Channel (BCH), and transmitting repetitively the SCH and the BCH by performing beamforming on the channels with different transmission beams. | 03-14-2013 |
20130072243 | METHOD AND APPARATUS FOR BEAM ALLOCATION IN WIRELESS COMMUNICATION SYSTEM - A beam allocation method of a Base Station (BS) in a wireless communication system is provided. The method includes transmitting a reference signal to a Mobile Station (MS) using a plurality of downlink transmit (Tx) beams, receiving information of a plurality of candidate downlink Tx beams determined by the MS in response to the received reference signal, selecting at least one downlink Tx beam from the plurality of candidate downlink Tx beams according to a predefined rule, generating control information for burst transmission, comprising the selected at least one downlink Tx beam information, transmitting the control information to the MS using the selected at least one downlink Tx beam, and transmitting a data burst based on Tx beam information included in the control information. | 03-21-2013 |
20130072244 | APPARATUS AND METHOD FOR BEAM SELECTING IN BEAMFORMED WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for reducing delay during beam alignment in a beamformed wireless communication system are provided. A method for selecting a beam pattern in a Base Station (BS) includes determining whether a direction finding signal is received through each time interval of a direction finding channel, transmitting information of whether the direction finding signal is received with respect to each time interval of the direction finding channel, changing a receive beam pattern and receiving a random access signal from a Mobile Station (MS) with at least one transmit beam pattern over a random access channel, and selecting one of transmit beam patterns of the MS and one of receive beam patterns of the BS according to the random access signal. | 03-21-2013 |
20130072247 | APPARATUS AND METHOD FOR OPERATING MULTIPLE BEAMFORMING TRANSCEIVER IN WIRELESS COMMUNICATION SYSTEM - A method for operating a base station in a wireless communication system in order to support a plurality of propagation characteristics is provided. The method includes allocating resource periods for respective propagation characteristics, transmitting system information including information on the propagation characteristics, transmitting a reference signal with the propagation characteristic corresponding to the relevant resource period through at least one of the resource periods, and receiving feedback information determining channel qualities for all of the propagation characteristics. | 03-21-2013 |
20130107831 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING SIGNAL IN A NEAR FIELD COMMUNICATION SYSTEM | 05-02-2013 |
20130172002 | BEAMFORMING METHOD AND APPARATUS FOR ACQUIRING TRANSMISSION BEAM DIVERSITY IN A WIRELESS COMMUNICATION SYSTEM - A data transmission method for a base station to acquire transmission beam diversity in a wireless communication system is provided. The data transmission method includes selecting at least two transmission beams to be used for data transmission from among multiple transmission beams corresponding to transmission beam information, if receiving the transmission beam information regarding the multiple transmission beams from a terminal, and transmitting data encoded with a predetermined orthogonalization code to the terminal via the selected at least two transmission beams. | 07-04-2013 |
20130258885 | METHOD AND APPARATUS FOR TRANSMITTING BEAM INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and a mobile station of transmitting beam information by a mobile station in a wireless communication system are provided. The mobile station determines whether a particular a particular event according to communication with a base station has occurred, and transmits information on at least one DownLink (DL) transmission beam among N number of DL transmission beams to the base station using a contention-based feedback channel according to a result of the determination. | 10-03-2013 |
20130301567 | SCHEME FOR PERFORMING BEAMFORMING IN COMMUNICATION SYSTEM - A method of performing beamforming in a base station is provided. The method includes receiving random access channel signals transmitted in one or more transmit beams from a terminal, using one or more receive beams, determining at least one best transmit beam from the one or more transmit beams and at least one best receive beam from the one or more receive beams, and transmitting information about the best transmit beam and the best receive beam to the terminal. | 11-14-2013 |
20130308569 | COORDINATED COMMUNICATION IN COMMUNICATION SYSTEM - A method of supporting communication of a terminal in a first base station of a beamforming system is provided. The method includes determining an uplink control channel through which both the first base station and at least one second base station are able to receive signals, through cooperation with the at least one second base station, the first base station and the at least one second base station belonging to a cloud cell, and transmitting to the terminal information on the determined uplink control channel and frame information to establish relationships with the base stations included in the cloud cell for each transmit frame of a signal to be transmitted to the terminal from the base stations. | 11-21-2013 |
20130322367 | APPARATUS AND METHOD FOR PERFORMING NETWORK ENTRY PROCEDURE IN CLOUD CELL COMMUNICATION SYSTEM - A method for performing a network entry procedure by a Mobile Station (MS) in a cloud cell communication system is provided. The method includes determining whether there is an arbitrary cloud cell member candidate Base Station (BS) as a cloud cell member candidate BS which has transmitted a downlink synchronization signal with a signal strength, if there is the arbitrary cloud cell member candidate BS, determining the arbitrary cloud cell member candidate BS as a final cloud cell member candidate BS which will perform a cooperative communication with the master BS, transmitting an access request message including information on the final cloud cell member candidate BS to the master BS, and receiving an access response message including information on a cloud cell member BS from the master BS. | 12-05-2013 |
20130343303 | COMMUNICATION METHOD AND APPARATUS USING BEAMFORMING IN A WIRELESS COMMUNICATION SYSTEM - A communication method and an apparatus using beamforming in a wireless communication system are provided. The communication method includes determining a candidate user set including one or more Mobile Stations (MSs), for Multiple User-Multiple Input Multiple Output (MU-MIMO) transmission, transmitting beam information indicating best Base Station (BS) transmission beams of the MSs of the candidate user set to the MSs of the candidate user set, receiving Precoding Matrix Index (PMI) information indicating a PMI to be used for baseband precoding from each of the MSs of the candidate user set, the PMI information being determined based on the beam information, and transmitting a signal precoded based on the PMI information to at least one MS. | 12-26-2013 |
20140004898 | METHOD AND APPARATUS FOR BEAMFORMING | 01-02-2014 |
20140056256 | APPARATUS AND METHOD FOR ADAPTIVE BEAM-FORMING IN WIRELESS COMMUNICATION SYSTEM - Apparatuses and methods for maintaining an optimal beam direction in a wireless communication system are provided. The method for operating a receiving node in a wireless communication system includes, determining a first transmission beam is determined as a preferred transmission beam using a plurality of reference signals transmitted by a transmitting node, generating preferred transmission beam information, transmitting the preferred transmission beam information to the transmitting node, receiving transmissions from the transmitting node via the first transmission beam, and determining whether a change of a transmission beam is necessary. When the change of the transmission beam is determined to be necessary, generating a beam change request and transmitting the beam change request to the transmitting node. | 02-27-2014 |
20140112269 | APPARATUS AND METHOD FOR BASE STATION COOPERATIVE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM - A Base Station (BS) cooperative communication method in a wireless communication system is provided. The BS cooperative communication method includes measuring signal quality of one or more neighboring BSs, comparing a number of downlink beams available for communication between a serving BS and a Mobile Station (MS) with a reference value, determining not to involve the one or more neighboring BSs in BS cooperative communication for the MS when the number of downlink beams is equal to or larger than the reference value, comparing signal measurements of the one or more neighboring BSs with a first threshold when the number of downlink beams is smaller than the reference value, and determining to involve one or more neighboring BSs having a signal measurement value larger than the first threshold in the BS cooperative communication for the MS. | 04-24-2014 |
20140177687 | MODULATION METHOD AND APPARATUS WITH CONSIDERATION OF ADAPTIVE HYBRID AUTOMATIC REPEAT REQUEST IN WIRELESS COMMUNICATION SYSTEM - A modulation method and an apparatus with consideration of adaptive Hybrid Automatic Repeat reQuest (HARQ) in a wireless communication system are provided. The method of a transmission end supporting a hybrid modulation technique in which different types of modulation schemes are mixed, information of a channel state with a reception end is collected. A modulation order of a first type of a modulation scheme and a modulation order of a second type of a modulation scheme are determined. The modulation order of a first type of a modulation scheme and a modulation order of a second type of a modulation scheme form the hybrid modulation technique. | 06-26-2014 |
20140177756 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING SIGNAL IN COMMUNICATION SYSTEM - A method for transmitting a signal by a signal transmission apparatus in a communication system is provided. The method includes detecting a parameter related to a Quadrature Amplitude Modulation (QAM) scheme and a parameter related to a Frequency Shift Keying (FSK) scheme based on channel quality and an interference component, and modulating information bits using a modulation scheme based on the QAM scheme and the FSK scheme which uses the parameter related to the QAM scheme and the parameter related to the FSK scheme. | 06-26-2014 |
20140376444 | MULTICAST SERVICE METHOD AND APPARATUS IN MOBILE COMMUNICATION SYSTEM - A method of providing a multicast service in a mobile communication system includes dividing original multicast data into a plurality of multicast data to generate a plurality of multicast streams having different data rates and transmitting a first transmission frame including the plurality of multicast streams to a plurality of user equipments; receiving a report on a data rate corresponding to an unreceived multicast stream among the plurality of multicast streams from one or more user equipments among the plurality of user equipments; and transmitting a second transmission frame including the unreceived multicast stream to the plurality of user equipments including the one or more user equipments. | 12-25-2014 |
20150085854 | METHOD AND APPARATUS FOR OBTAINING SYNCHRONIZATION FOR COMMUNICATION BETWEEN DEVICES - A method and an apparatus for obtaining synchronization of a terminal for communication between devices when a base station collapses are provided. The method includes, when a preamble signal is not received from the base station, maintaining a first synchronization for a predetermined time using a timer, transmitting a first preamble signal at a first synchronization point, performing a synchronization procedure with at least one neighbor terminal based on the first preamble signal, and, after the synchronization procedure, performing communication with the at least one neighbor terminal. In addition, when a preamble signal is not received from a base station, a first preamble signal from a relevant neighbor terminal is monitored for a predetermined time. When the first preamble signal is not received from the relevant neighbor terminal for the predetermined time, a second preamble signal is transmitted at an arbitrary point. | 03-26-2015 |
20150249995 | APPARATUS AND METHOD FOR OPERATING MULTIPLE BEAMFORMING TRANSCEIVER IN WIRELESS COMMUNICATION SYSTEM - A method for operating a base station in a wireless communication system in order to support a plurality of propagation characteristics is provided. The method includes allocating resource periods for respective propagation characteristics, transmitting system information including information on the propagation characteristics, transmitting a reference signal with the propagation characteristic corresponding to the relevant resource period through at least one of the resource periods, and receiving feedback information determining channel qualities for all of the propagation characteristics. | 09-03-2015 |
20160073393 | APPARATUS AND METHOD FOR SELECTING BEST BEAM IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for selecting the best beam in a wireless communication system are provided. An operation of a Base Station (BS) includes repeatedly transmitting reference signals beamformed with a first width, receiving a feedback signal indicating at least one preferred-beam having the first width from at least one terminal, determining a direction range within which reference signals beamformed with a second width are to be transmitted and a transmission pattern, based on the at least one preferred-beam having the first width, repeatedly transmitting the reference signals beamformed with the second width within the determined direction range according to the transmission pattern, and receiving a feedback signal indicating at least one preferred-beam having the second width from the at least one terminal. | 03-10-2016 |
Patent application number | Description | Published |
20120244445 | ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY COMPRISING SAME - In one aspect, a rechargeable lithium battery comprising a non-aqueous electrolyte including an organic solvent; a lithium salt and a substituted 2-fluoroalkoxy-1,3,2-dioxaphospholane 2-oxide is provided. The 2-fluoroalkoxy-1,3,2-dioxaphospholane 2-oxide can be a compound represented by the following Chemical Formula 1. | 09-27-2012 |
20130004840 | NON-AQUEOUS ELECTROLYTE ADDITIVE FOR LITHIUM SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A non-aqueous electrolyte additive for a lithium secondary battery, a non-aqueous electrolyte for a lithium secondary battery, and a lithium secondary battery, the additive including a bidentate phosphorus compound represented by the following Chemical Formula 1. | 01-03-2013 |
20130004861 | ELECTROLYTE ADDITIVE FOR LITHIUM SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A non-aqueous electrolyte additive for a lithium secondary battery, a non-aqueous electrolyte, and a lithium secondary battery including the same, the additive including dicyanoacetylene or a cyano group-containing unsaturated compound represented by the following Chemical Formula 1, the cyano group-containing unsaturated compound including an unsaturated bond and two or more cyano groups linked in cis- or trans-positions of carbons of the unsaturated bond. | 01-03-2013 |
20130011730 | POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY - Disclosed is a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive electrode includes a current collector; a positive active material layer including a positive active material and a vanadium oxide; and a vanadium oxide-contained coating layer formed between the current collector and the positive active material layer. | 01-10-2013 |
20130059210 | ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - An electrolyte for a rechargeable lithium battery and rechargeable lithium battery including the same is provided. The electrolyte includes a film-forming compound; a lithium salt; and an organic solvent. | 03-07-2013 |
20130183590 | ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING SAME - An electrode for a lithium secondary battery, including a surface having surface roughness of about 800 nm to about 1000 nm, and a lithium secondary battery including the same. In one embodiment, the lithium secondary battery has improved cycle-life characteristics. | 07-18-2013 |
20140050989 | SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Disclosed is a separator having surface energy of about 45 mN to about 50 mN/m which can be prepared by radiating plasma on a polymer film under a current of from about 1800 mA to about 2000 mA and electric power of from about 2750 W to about 3000 W. Further disclosed is a rechargeable battery comprising the separator having a surface energy of about 45 mN to about 50 mN/m. | 02-20-2014 |
20140065463 | SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A separator for a rechargeable lithium battery including a tungsten-doped vanadium oxide (VO | 03-06-2014 |
20140134479 | ADDITIVE FOR ELECTROLYTE AND ELECTROLYTE AND RECHARGEABLE LITHIUM BATTERY - An electrolyte additive represented by the following Chemical Formula 1, an electrolyte, and a rechargeable lithium battery are disclosed: | 05-15-2014 |
20140178772 | ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - An electrolyte for a rechargeable lithium battery that includes a lithium salt and a non-aqueous organic solvent, wherein the non-aqueous organic solvent includes a fluoro-based solvent represented by the following Chemical Formula 1, and a rechargeable lithium battery including the same. | 06-26-2014 |
20140199599 | ELECTROLYTES FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY COMPRISING SAME - Disclosed is an electrolyte for a rechargeable lithium battery including an organic solvent; a lithium salt; a flame retardant; and at least one acrylate compound having a fluorinated alkyl group. The electrolyte for a rechargeable battery may provide a rechargeable lithium battery having flame-retardant characteristics without decrease of cycle-life and battery performance. | 07-17-2014 |
20140205914 | ELECTROLYTE FOR LITHIUM RECHARGEABLE BATTERY AND LITHIUM RECHARGEABLE BATTERY INCLUDING THE ELECTROLYTE - Disclosed are an electrolyte for a rechargeable lithium battery including an ionic liquid represented by Chemical Formula 1, a lithium salt, and an organic solvent, and a rechargeable lithium battery including the electrolyte for a rechargeable lithium battery. | 07-24-2014 |
20140220426 | PHOSPHORUS CONTAINING COMPOUND, METHOD OF PREPARING SAME, AND ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A phosphorous containing compound represented by the following Chemical Formula 1, a method of preparing the phosphorous containing compound, an electrolyte for a rechargeable lithium battery including the phosphorous containing compound, and a rechargeable lithium battery including the electrolyte. | 08-07-2014 |
20140242453 | ELECTROLYTE AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - An electrolyte for a rechargeable lithium battery including a lithium salt, a non-aqueous organic solvent, and an additive, wherein the additive includes a compound represented by Chemical Formula 1 | 08-28-2014 |
20140308563 | RECHARGEABLE LITHIUM BATTERY AND METHOD OF FABRICATING SAME - In an aspect, a rechargeable lithium battery that includes a positive electrode; negative electrode; a separator interposed between the positive electrode and the negative electrode and including a porous substrate and a coating layer formed on at least one side of the porous substrate; and an electrolyte including a lithium salt, a non-aqueous organic solvent, and an additive is provided. | 10-16-2014 |
20140308564 | RECHARGEABLE LITHIUM BATTERY AND METHOD OF FABRICATING THE SAME - In an aspect, a rechargeable lithium battery that includes a positive electrode; negative electrode; a separator interposed between the positive electrode and the negative electrode and including a porous substrate and a coating layer formed on at least one side of the porous substrate; and an electrolyte including a lithium salt, a non-aqueous organic solvent, and an additive is provided. | 10-16-2014 |
20140322596 | ADDITIVE FOR ELECTROLYTE OF LITHIUM BATTERY, ORGANIC ELECTROLYTIC SOLUTION COMPRISING THE SAME, AND LITHIUM BATTERY USING THE ORGANIC ELECTROLYTIC SOLUTION - In an aspect, an additive for an electrolyte of a lithium battery, the additive including a compound including at least three nitrile moieties is provided: | 10-30-2014 |
20140335427 | ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY EMPLOYING THE SAME - An electrolyte for a lithium secondary battery and a lithium secondary battery including the electrolyte are provided. The electrolyte includes a compound represented by Formula 1 below; a nonaqueous organic solvent; and a lithium salt: | 11-13-2014 |
20140342242 | ORGANIC ELECTROLYTE SOLUTION AND LITHIUM BATTERY COMPRISING THE SAME - An organic electrolyte solution and a lithium battery using the same are disclosed. The organic electrolyte solution includes a lithium salt, an organic solution, a thiophene-based compound and a nitrile-based compound. | 11-20-2014 |
20140349176 | ADDITIVE FOR ELECTROLYTE, ELECTROLYTE AND RECHARGEABLE LITHIUM BATTERY - In an aspect, a rechargeable lithium battery that includes a positive electrode; negative electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte including a lithium salt, a non-aqueous organic solvent, and an additive is provided. The additive may be an optionally substituted thiophene. | 11-27-2014 |
Patent application number | Description | Published |
20110085965 | LITHIUM TITANIUM OXIDE FOR ANODE ACTIVE MATERIAL FOR LITHIUM RECHARGEABLE BATTERY, METHOD OF PREPARING LITHIUM TITANIUM OXIDE, AND LITHIUM RECHARGEABLE BATTERY INCLUDING LITHIUM TITANIUM OXIDE - A lithium titanium oxide for an anode active material of a lithium rechargeable battery, wherein a X-ray diffraction (XRD) spectrum has a first peak of Li | 04-14-2011 |
20110086275 | LITHIUM TITANIUM OXIDE, METHOD OF PREPARING LITHIUM TITANIUM OXIDE, AND LITHIUM RECHARGEABLE BATTERY INCLUDING LITHIUM TITANIUM OXIDE - A spherical primary particle of a lithium titanium oxide of which average diameter is in the range of about 1 to about 20 μm, a method of preparing the spherical primary particle of the lithium titanium oxide, and a lithium rechargeable battery including the spherical primary particle of the lithium titanium oxide. | 04-14-2011 |
20110183202 | Negative Electrode Active Material Containing Nanometal Particles and Super-Conductive Nanoparticles and Lithium Battery Comprising the Negative Electrode Active Material - A negative electrode active material including nanometal particles and super-conductive nanoparticles and a lithium battery including the same. | 07-28-2011 |
20110195308 | Secondary particle and lithium battery including secondary particle - A secondary particle and a lithium battery including the same are provided wherein the secondary particle includes a plurality of primary particles and each primary particle contains n polycyclic nano-sheets disposed upon one another. The polycyclic nano-sheets include hexagonal rings of six carbon atoms linked to each other, wherein a first carbon and a second carbon have a distance therebetween of L | 08-11-2011 |
20110274929 | LITHIUM TITANATE AGGREGATE AND METHOD OF PREPARING THE SAME - A lithium titanate aggregate and a method of preparing the same. In the lithium titanate aggregate, a single primary particle has a median diameter (D | 11-10-2011 |
20110274970 | NEGATIVE ACTIVE MATERIAL AND LITHIUM BATTERY - A negative active material containing super-conductive nanoparticles coated with a high capacity negative material and a lithium battery including the same are provided, wherein the super-conductive nanoparticles have a structure in which polycyclic nano-sheets are stacked upon one another along a direction perpendicular to a first plane. The polycyclic nano-sheets include hexagonal rings of six carbons atoms linked to each other, wherein a first carbon and a second carbon have a distance therebetween of L | 11-10-2011 |
20120244439 | LITHIUM TITANATE, NEGATIVE ELECTRODE INCLUDING THE LITHIUM TITANATE, AND SECONDARY LITHIUM BATTERY CONTAINING THE ELECTRODE - A negative electrode for a lithium secondary battery that includes, as a negative active material, a lithium titanate (Li | 09-27-2012 |
20120258368 | NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PREPARING THE SAME AND LITHIUM SECONDARY BATTERY INCLUDING NEGATIVE ELECTRODE ACTIVE MATERIAL - A negative electrode active material, a method of preparing the negative electrode active material and a lithium secondary battery including the negative electrode active material are disclosed. A negative electrode active material includes a lithium titanate, wherein a portion of lithium of the lithium titanate is substituted by at least one selected from the group consisting of Sr, Ba, a mixture thereof and an alloy thereof, and thus a lithium secondary battery including the negative electrode active material may improve high-rate discharge characteristics. | 10-11-2012 |
20130004851 | NEGATIVE ACTIVE MATERIAL, NEGATIVE ELECTRODE INCLUDING THE SAME, LITHIUM SECONDARY BATTERY INCLUDING NEGATIVE ELECTRODE, AND METHOD OF PREPARING NEGATIVE ACTIVE MATERIAL - A negative active material comprising lithium titanate oxide having an area ratio of a diffraction peak of a (111) plane that appears at 2θ-18.3°±0.4 to a diffraction peak of a (311) plane that appears at 2θ=35.5°±0.4, in an XRD spectrum, in the range of about 2.2:1 to about 5.5:1, a negative electrode comprising the negative active material, a lithium secondary battery comprising the negative electrode, and a method of preparing the negative active material. | 01-03-2013 |
20130189583 | COMPOSITE ANODE ACTIVE MATERIAL, METHOD OF PREPARING COMPOSITE ANODE ACTIVE MATERIAL, AND ANODE AND LITHIUM BATTERY INCLUDING COMPOSITE ANODE ACTIVE MATERIAL - A composite anode active material includes matrix particles including lithium titanate; and at least one nanoparticle dispersed in the matrix particles. The at least one nanoparticle includes at least one selected from the group a metal capable of forming alloys with lithium and a non-transition metal oxide. | 07-25-2013 |