| Patent application number | Description | Published |
|---|
| 20090274235 | Data transmission method using dirty paper coding in mimo system - A data transmission method for multiple users having multiple receive antennas is provided. The method includes selecting a receive antenna among the multiple receive antennas for each user, performing DPC (Dirty Paper Coding) from the multiple transmit antennas to the receive antenna and transmitting a transmission signal on which the DPC is performed. Since DPC is implemented through a receive antenna selected among multiple receive antennas, complexity is not much increased although the DPC is applied to a MIMO system. | 11-05-2009 |
| 20090316809 | Method for transmitting channel quality information - There is provided a method for transmitting channel quality information in a wireless communication system. Over-all band of the wireless communication system is divided by a plurality of sub-bands. The method includes selecting a first sub-band having the highest CQI among the plurality of sub-bands, transmitting CQI of the first sub-band and transmitting CQI of a second sub-band, the second sub-band having the CQI lower than the first sub-band, wherein the number of CQI levels of the second sub-band is less than that of CQI levels of the first sub-band. Overheads incurred by CQI feedback can be reduced. | 12-24-2009 |
| 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 |
| 20100103886 | METHOD FOR TRANSMITTING CONTROL SIGNALS IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting control signals includes configuring a multiplexing indicator indicating that a plurality of control signals are multiplexed on a control channel, generating a multiplexed control signal by multiplexing a first control signal and a second control signal according to the multiplexing indicator and transmitting the multiplexed control signal on the control channel. Overhead due to control signaling can be reduced by transmitting a multiplexed control signal on a control channel. | 04-29-2010 |
| 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 |
| 20100115380 | METHOD OF GENERATING CODEWORD IN WIRELESS COMMUNICATION SYSTEM - A method of generating a codeword for a control signal in a wireless communication system is provided. The method includes preparing a control signal and generating a codeword by applying a Reed-Muller (RM) extension matrix to the control signal. The RM extension matrix is generated by extending a RM basic matrix. A control signal can reliably be transmitted by the codeword with low complexity. | 05-06-2010 |
| 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 |
| 20100124195 | METHOD OF TRANSMITTING CONTROL SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting a control signal in wireless communication system includes generating a multiplexed control signal by multiplexing a first control signal and a second control signal, and transmitting the multiplexed control signal on a control channel. Overhead due to control signaling can be reduced by transmitting or receiving a multiplexed control signal through one channel. | 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 |
| 20100195546 | METHOD OF COMMUNICATION SUPPORTING HALF-DUPLEX FREQUENCY DIVISION DUPLEX - A method of communication supporting half-duplex frequency division duplex (H-FDD) is provided. The method includes receiving a group switching indicator, wherein the group switching indicator indicates switching among a plurality of groups, and the plurality of group use different downlink subframes in time domain and switching to the group indicated by the group switching indicator. | 08-05-2010 |
| 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 |
| 20100208672 | Method of Allocating Uplink Radio Resource - A method of allocating an uplink radio resource includes transmitting a scheduling request signal for requesting allocation of the uplink radio resource, wherein the scheduling request signal comprises control information, a request of the allocation of the uplink radio resource is represented by transmitting the scheduling request signal and the control information is represented by a value of the scheduling request signal, and receiving a scheduling grant message in response to the scheduling request signal. | 08-19-2010 |
| 20100220675 | METHOD OF TRANSMITTING FEEDBACK MESSAGE IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting a feedback message in wireless communication system is provided. The method includes selecting N best subbands of M subbands according to CQI, where both M and N are a natural number and M is larger than N, generating multiple input multiple output (MIMO) information comprising N codebook indexes and N differential CQIs and transmitting the feedback message comprising the MIMO information. | 09-02-2010 |
| 20100239046 | Method of Transmitting Data Using Repetition Coding - A method of transmitting data in a wireless communication system is provided. The method includes generating duplicate data by using repetition coding, the duplicate data being the same as original data, shifting the phase of the duplicate data, and transmitting the original data and the phase-shifted duplicate data. The duplicate data is mapped to a modulation symbol having a different size or phase as that of the original data, thus to reduce the PAPR unlike the general repetition coding. | 09-23-2010 |
| 20100248766 | METHOD OF ALLOCATING RADIO RESOURCES - A method of allocating radio resources includes allocating radio resources to a first allocation unit which is one of a plurality of allocation units included in a resource domain, and allocating radio resources to a second allocation unit at the m th position in a time domain and at the n th position in a frequency domain from the first allocation unit, wherein the resource domain includes a plurality of allocation unit groups, the plurality of allocation unit groups are composed the plurality of allocation units placed m in the time domain and n in the frequency domain from a previous allocation unit. | 09-30-2010 |
| 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 |
| 20100254483 | METHOD OF TRANSMITTING CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting control signals in a wireless communication system includes transmitting a first control signal via a control channel region comprising a plurality of tiles composed of a plurality of subcarriers contiguous in a frequency domain on a plurality of OFDM symbols in a time domain, and transmitting a second control signal via the control channel region, wherein the plurality of tiles included in the control channel region are distributedly or contiguously disposed within a basic range of the control channel region, a range within which the plurality of tiles are distributed in the time domain. Control channel regions can be configured in various manners, so control signals can be adaptively transmitted in various channel environments. | 10-07-2010 |
| 20100265898 | METHOD OF TRANSMITTING ACK/NACK SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting an ACK/NACK signal via an ACK/NACK channel including one or more tiles comprised of a plurality of OFDM symbols in a time domain and a plurality of subcarriers in a frequency domain in a wireless communication system includes generating a first codeword by applying a first spreading code to data symbols and pilot symbols, wherein the tile includes a plurality of data subcarriers and a plurality of pilot subcarriers, the data symbols are allocated to the plurality of data subcarriers and the pilot symbols are allocated to the plurality of pilot subcarriers, generating a second codeword by allocating data symbols applied a second spreading code to the plurality of data subcarriers, and transmitting the first and second codewords. | 10-21-2010 |
| 20110064019 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK CONTROL SIGNAL IN RELAY STATION - A method of transmitting an uplink (UL) control signal of a relay station is provided. The method includes: configuring a UL relay zone for transmitting a signal by the relay station to a base station in a frame; configuring a resource unit including a plurality of symbols and a plurality of subcarriers to allocate the UL control signal in a subframe of the UL relay zone; and transmitting the UL control signal by using the resource unit, wherein, if a transition gap required for switching of signal transmission and reception of the relay station is included in the subframe, the UL control signal is transmitted in the remaining symbols other than the plurality of symbols constituting the resource unit including the transition gap. | 03-17-2011 |
| 20110117943 | METHOD OF ALLOCATING RADIO RESOURCE IN WIRELESS COMMUNICATION SYSTEM - A method of allocating radio resources in a wireless communication system includes dividing the overall frequency band into a plurality of frequency blocks including at least one subcarrier in a frequency domain, and allocating an allocation unit including some of the plurality of frequency blocks to a user equipment (ITE), wherein the allocation unit is any one of a localized allocation unit including frequency blocks contiguous in the frequency domain and a distributed allocation unit including frequency blocks distributed in the frequency domain. Allocation schemes of subcarriers are freely used suitably according to channel environments of users, the scheduling effect of radio resources can be enhanced. | 05-19-2011 |
| 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 |
