| Patent application number | Description | Published |
|---|
| 20090323840 | METHOD OF TRANSMITTING CODEBOOK INDEX IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting a codebook index in a wireless communication system includes receiving a feedback index regarding an entity selected from a plurality of entities belonging to a feedback codebook, selecting a precoder from a precoding codebook using the feedback index, the precoding codebook comprising a plurality of precoders and transmitting a precoder index of the selected precoder. Flexibility can be given to codebook designs, and overhead due to the feedback of codebook indices can be reduced. | 12-31-2009 |
| 20100067616 | METHOD OF TRANSMITTING CONTROL INFORMATION IN MULTIPLE ANTENNA SYSTEM - A method of transmitting control information in a multiple antenna system includes obtaining a channel quality indicator (CQI) of a first layer, obtaining a differential value between a CQI of a second layer and the CQI of the first layer, transmitting the CQI of the first layer, and transmitting the differential value. | 03-18-2010 |
| 20100105402 | METHOD FOR TRANSMITTING CONTROL INFORMATION - A method for transmitting control information includes receiving a control information request, transmitting primary control information responding the control information request through a primary control channel and transmitting secondary control information responding the control information request through a secondary control channel, wherein the primary control channel uses data subcarriers and the secondary control channel uses pilot subcarriers. | 04-29-2010 |
| 20100118691 | METHOD FOR GENERATING CODEWORD AND TRANSMITTING CONTROL INFORMATION USING THE SAME - A method for generating a codeword from a vector generated by combining four symbols PO, P1, P2 and P3 includes generating 16 vectors V | 05-13-2010 |
| 20100124194 | METHOD OF TRANSMITTING BROADCAST INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting broadcast information in a wireless communication system includes transmitting broadcast information and receiving an ACK (Acknowledgement)/NACK (Not-Acknowledgement) signal on an uplink channel from at least one mobile station in a cell, the ACK/NACK signal indicating whether the broadcast information is successfully received or not. A base station can know whether mobile stations successfully receive broadcast information or not and perform various operations to improve a reception rate of the broadcast information based on the result. | 05-20-2010 |
| 20100172434 | Method For Transmitting Codeword - A method for transmitting a codeword through a subchannel consisting of a plurality of tiles in a wireless communication system in which one tile comprises a plurality of data subcarriers and at least one pilot subcarrier is provided. The method includes generating a codeword by assigning pilot symbols to the at least one pilot subcarrier in each tile, by assigning a first codeword symbol to some of the plurality of data subcarriers, and by assigning a second codeword symbol to the remaining data subcarriers, the codeword corresponding to the plurality of tiles, and transmitting the codeword. Resources on a frequency-time axis can be effectively used for transmitting various data or control information. | 07-08-2010 |
| 20100199140 | METHOD FOR TRANSMITTING DATA USING HARQ - A method for transmitting data by using hybrid automatic repeat request (HARQ) includes allocating a radio resource for a non-acknowledgment (NACK) channel which is used to transmit a NACK signal for multi-user data of a plurality of UEs, transmitting the multi-user data, and retransmitting the multi-user data when receiving the NACK signal on the NACK channel from at least one UE which receives the multi-user data. | 08-05-2010 |
| 20100208673 | Method of Allocating Resource in Wireless Communication System - A method of allocating resources in a wireless communication system includes allocating a plurality of physical resource blocks, each of which includes a plurality of sub-parts, to a virtual resource block, and mapping the virtual resource block to the plurality of physical resource blocks, wherein the virtual resource block is mapped to the sub-parts located in different positions in the range of each physical resource block. The number of resource elements allocated for the virtual resource block is constantly maintained. | 08-19-2010 |
| 20100254272 | METHOD OF TRANSMITTING CHANNEL QUALITY INDICATOR - A method of transmitting channel quality indicator (CQI) includes obtaining CQI of each, of the plurality of sub-bands, selecting a first sub-band having the best CQI of the plurality of sub- bands, transmitting the best CQI of the first sub-band at a first transmission cycle and transmitting a difference value between the best CQI of the first sub-band and a CQI of the first sub-band at a second transmission cycle. Signalling overhead due to CQI transmission can be reduced. | 10-07-2010 |
| 20110019764 | Method of Data Transmission in Multiple Antenna System - A method of data transmission includes determining the number of layers, generating mapping symbols by mapping modulation symbols for a first codeword and modulation symbols for a second codeword to each layer, and transmitting the mapping symbols through a plurality of antennas. At least one of the first codeword and the second codeword is mapped to at least 3 layers and the number of layers is larger than 3. | 01-27-2011 |
| 20110103341 | Apparatus and Method for Data Transmission Using Transmit Diversity in SC-FDMA - An apparatus for data transmission is provided. The apparatus includes a data processor encoding an information bit and generating a modulation symbol by performing constellation mapping on the encoded information bit, a discrete Fourier transform (DFT) unit performing DFT on the modulation symbol to generate a frequency-domain symbol, a space time block coding (STBC) processor performing STBC on the frequency-domain symbol to generate an STBC code consisting of 1st and 2nd STBC streams, a subcarrier mapper mapping the 1st STBC stream to a 1st subcarrier and mapping the 2nd STBC stream to a 2nd subcarrier, an inverse fast Fourier transform (IFFT) unit performing IFFT on the 1st subcarrier to generate a 1st single carrier-frequency division multiple access (SC-FDMA) symbol and performing IFFT on the 2nd subcarrier to generate a 2nd SC-FDMA symbol, and a plurality of transmit antennas transmitting the 1st and 2nd SC-FDMA symbols. STBC is effectively applied to a SC-FDMA system to decrease a peak-to-average power ratio (PAPR) and to maintain a single-carrier property. | 05-05-2011 |
| 20110110307 | DATA TRANSMISSION APPARATUS USING MULTIPLE ANTENNAS AND METHOD THEREOF - An apparatus for transmitting data includes a data processing unit for generating a data symbol by channel-coding and constellation-mapping on information bits, a Discrete Fourier Transform (DFT) unit for generating a frequency domain symbol by performing DFT on the data symbols, a Multiple-Input Multiple-Output (MIMO) processing unit for generating a first transmission symbol by applying a first transmission diversity scheme to the frequency domain symbol and generating a second transmission symbol by applying a second transmission diversity scheme to the first transmission symbol, a Single Carrier-Frequency Division Multiple Access (SC-FDMA) modulation unit for generating an SC-FDMA symbol by performing Inverse Fast Fourier Transform (IFFT) on the first transmission symbol and the second transmission symbol, and a plurality of transmission antennas for sending the SC-FDMA symbol. | 05-12-2011 |
| 20110116572 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL IN MULTIPLE ANTENNA SYSTEM - A method and an apparatus for transmitting a reference signal in a multiple antenna system are provided. The method includes transmitting a common reference signal through N antennas (N| 05-19-2011 | |
| 20110126071 | METHOD AND APPARATUS OF TRANSMITTING INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus of transmitting information in a wireless communication system are provided. The method includes transmitting first information based on a first resource index through a first antenna and transmitting second information based on a second resource index through a second antenna. | 05-26-2011 |
| 20110128883 | RELAY STATION IN RADIO COMMUNICATION SYSTEM AND OPERATING METHOD FOR THE RELAY STATION - A method for operating a relay station in a wireless communication system includes: obtaining information regarding assigned subframes among a plurality of subframes; monitoring a PDCCH (Physical Downlink Control Channel) carrying information regarding a radio resource allocation within the assigned subframes; and receiving data from a base station on the basis of the radio resource allocation of the monitored PDCCH. The relay station may operate to guarantee compatibility with an existing terminal in a wireless communication system. Also, a method for assigning radio resources between a base station and the relay station is defined. | 06-02-2011 |
| 20110134868 | METHOD AND APPARATUS OF TRANSMITTING DATA IN MULTIPLE RF SYSTEM - A method and an apparatus of transmitting data in a multi-radio frequency (RF) system are provided. The method includes transmitting first data through a first physical channel to a first base station (BS), transmitting second data through a second physical channel to a second BS, wherein the first data and the second data are simultaneously transmitted. | 06-09-2011 |
| 20110134902 | METHOD OF TRANSMITTING DATA USING SPATIAL MULTIPLEXING - A data transmission method using spatial multiplexing is disclosed. The data transmission method using spatial multiplexing includes modulating at least one codeword to generate at least one modulation symbol, mapping the at least one modulation symbol to a layer whose number is determined according to its rank to generate a layer-mapped symbol stream, performing discrete Fourier transform (DFT) on the layer-mapped symbol stream to generate a frequency domain symbol stream, performing precoding on the frequency domain symbol stream, mapping the precoded frequency domain symbol stream to subcarriers, and then performing inverse fast Fourier transform (IFFT) on the precoded frequency domain symbol stream-mapped subcarriers to generate SC-FDMA symbols; and transmitting the SC-FDMA symbols by using a plurality of transmission antennas. Spatial multiplexing having a low PAPR can be possibly performed in an SC-FDMA system. | 06-09-2011 |
| 20110134903 | APPARATUS AND METHOD FOR DATA TRANSMISSION USING TRANSMISSION DIVERSITY IN SC-FDMA SYSTEM - Disclosed is a data transmission apparatus for providing transmission diversity in an SC-FDMA (Single Carrier-Frequency Division Multiple Access) system. The data transmission apparatus comprises: a data processor, which performs coding and modulation on an information bit to generate a data symbol; an SC-FDMA processor, which changes a weight matrix per change-cycle, precodes the data symbol for each weight matrix being changed and performs SC-FDMA modulation for generating an SC-FDMA symbol; and an RF unit, which transmits the SC-FDMA symbol. With the application of a PVS method to the SC-FDMA system, not only can transmission diversity be provided, but PAPR can also be reduced and single-carrier properties can be maintained. | 06-09-2011 |
| 20110141941 | Method and Apparatus of Transmitting Control Information in Wireless Communication System - A method and an apparatus of transmitting control information in a wireless communication systema are provided. The method includes transmitting first control information and second control information through an uplink component carrier (UL CC), wherein the first control information is for a first downlink component carrier (DL CC), and the second control information is for a second DL CC. | 06-16-2011 |
| 20110142000 | METHOD AND APPARATUS FOR THE TRANSMISSION OF A CONTROL SIGNAL IN A RADIO COMMUNICATION SYSTEM - The present invention provides a method and an apparatus for the transmission of control signal in a radio communication system. The method includes the steps of processing first control information on the basis of a first resource index to create a first control signal, processing second control information on the basis of a second resource index to create a second control signal, and transmitting the first control signal and the second control signal. | 06-16-2011 |
| 20110142001 | METHOD FOR TRANSMITTING MULTIPLE CODE WORDS IN A MULTIPLE ANTENNA SYSTEM - Provided is a method of sending multiple codewords in a wireless communication system using a plurality of transmitting antennas. The method includes the steps of encoding a plurality of parallel information bit streams to generate a plurality of parallel codewords; modulating the plurality of parallel codewords to generate a plurality of parallel modulated symbol streams; performing a DFT (Discrete Fourier Transform) on the modulated symbol streams to generate a plurality of frequency domain symbol streams; performing a pre-coding process on the plurality of frequency domain symbol streams; mapping the plurality of precoded frequency domain symbol streams to resource elements; performing an IFFT (Inverse Fast Fourier Transform) on the plurality of frequency domain symbol streams to generate SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols; performing shifting, at a predetermined time interval, on layers at which the plurality of parallel codewords, the plurality of parallel modulated symbol streams, or the plurality of frequency domain symbol streams; and transmitting the SC-FDMA symbol. | 06-16-2011 |
| 20110143796 | METHOD AND APPARATUS OF MONITORING PDCCH IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus of monitoring a physical downlink control channel (PDCCH) in a wireless communication system, carried in a user equipment (UE), are provided. The method includes receiving a PDCCH map, and monitoring a set of PDCCH candidates based on the PDCCH map. | 06-16-2011 |
| 20110149944 | APPARATUS AND METHOD FOR DATA TRANSMISSION IN SC-FDMA SYSTEM WITH MULTIPLE ANTENNAS - According to an aspect of the present invention, an apparatus for data transmission is provided. The apparatus includes a data processing unit generating a data symbol by performing channel coding and constellation mapping on an information bit, a single carrier-frequency division multiple access (SC-FDMA) modulator generating an SC-FDMA symbol by performing discrete Fourier transform (DFT) on the data symbol, by mapping the DFT performed-data symbol to subcarriers, and by performing inverse fast Fourier transform (IFFT) on the subcarrier mapped-DFT performed-data symbol, and a plurality of transmit antennas transmitting the SC-FDMA symbol. A single carrier-frequency division multiple access (SC-FDMA) system can effectively use frequency switched transmit diversity (FSTD) to reduce a peak-to-average power ratio (PAPR) and to maintain a single-carrier property. | 06-23-2011 |
| 20110158345 | PILOT TRANSMISSION METHOD IN A WIRELESS COMMUNICATION SYSTEM - A pilot transmission method in a wireless communication system is provided. The method includes: transmitting a first pilot for channel measurement through a first transmission section; and transmitting a second pilot for channel measurement through a second transmission section which is subsequent in time to the first transmission section, wherein the first transmission section and the second transmission section include a plurality of sub-bands, parts of the plurality of sub-bands use predetermined precoding whereas the remaining sub-bands use non-predetermined precoding, and any one of the first pilot and the second pilot is carried only on a sub-band which uses the predetermined precoding whereas the other pilot is carried on the entirety of the plurality of sub-bands. | 06-30-2011 |
