Patent application number | Description | Published |
20090070653 | METHOD OF TRANSMITTING DATA - A method of transmitting data in a wireless access system is disclosed. The method includes various processes of obtaining the number of code blocks in consideration of an error detection code which is to be attached to each code block, calculating the size of the code blocks, segmenting input data, and channel-coding the code blocks, thereby efficiently transmitting data. | 03-12-2009 |
20090122901 | METHOD FOR CONFIGURATING BASIC SIGNAL ALLOCATION UNIT AND METHOD FOR TRANSMITTING SIGNALS USING THE SAME - A method for configurating a basic signal allocation unit and a method of transmitting signals using the configurated basic signal allocation unit are disclosed. In particular, a basic frequency domain signal allocation unit is configurated by considering at least one selected from the group consisting of a signaling overhead, a size of a coherent bandwidth and a number of divisors among specific numbers and an OFDM symbol number corresponding to a multiple of a subframe unit, each of the specific numbers multiplied to a predetermined subcarrier spacing to enable a result value of the multiplication to have a difference smaller than a prescribed threshold from a divisor of a system bandwidth. And, a time domain unit is configurated by 1-subframe unit. Accordingly, signaling overhead can be efficiently reduced. | 05-14-2009 |
20090207784 | RANK FEEDBACK METHOD FOR MULTIPLE-INPUT MULTIPLE-OUTPUT TRANSMISSION - A method for transmitting a plurality of control information through a PUCCH or a PUSCH is disclosed. The method includes transmitting first control information, and transmitting second control information. The transmission of the first control information and the transmission of the second control information are performed in units of one subframe and are performed once per predetermined period, respectively. In a subframe in which the transmission of the second control information is to be simultaneously performed with the transmission of the first control information, the second control information is excluded for transmission or the first and the second information are simultaneously transmitted, according to the configuration of a closed-loop system or an open-loop system. | 08-20-2009 |
20090282310 | METHOD FOR RETRANSMITTING SIGNALS IN MIMO SYSTEM EMPLOYING HARQ SCHEME - A method for retransmitting signals in a MIMO system that uses an HARQ scheme is provided. In the method, an additional codeword-to-layer mapping scheme for retransmission in a MIMO system that uses an HARQ scheme is defined and used to efficiently retransmit signals. In addition, required information is obtained using existing control information to more efficiently retransmit signals in terms of control signal overhead. | 11-12-2009 |
20090285193 | METHOD FOR MULTIPLEXING DATA AND CONTROL INFORMATION - A method for multiplexing a data information stream, including a systematic symbol and a non-systematic symbol, and a control information stream of at least three types in a wireless mobile communication system is disclosed. The method includes mapping the data information stream to a resource area so that the systematic symbol is not mapped to a specific resource area to which the control information stream is mapped, and mapping the control information stream to the specific resource area. | 11-19-2009 |
20100002644 | METHOD OF RETRANSMITTING DATA IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR IMPLEMENTING THE SAME - A method of transmitting data in a wireless communication system is disclosed. More specifically, the method includes receiving a first group index and a second group index, wherein the first group index represents indices of a group having channel power below a specified threshold value and the second index group index represents indices of a group having channel power greater than or equal to the specified threshold value, and transmitting the data after swapping mapping locations of the first group index and the second group index. | 01-07-2010 |
20100054358 | METHOD OF TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting control information in a wireless communication system is provided. The method includes configuring downlink control information including a plurality of information fields according to a format of scheduling for transmission of a single codeword in a spatial multiplexing mode, wherein the plurality of information fields include a preceding matrix indicator (PMI) confirmation filed for indicating whether preceding is performed on downlink data by using a PMI reported by a user equipment and a transmitted preceding matrix indicator (TPMI) information field for indicating a codebook index, and at least one of the PMI confirmation field and the TPMI information field indicates an offset value of power for the downlink data transmission or interference information for the downlink data transmission, and transmitting the downlink control information. | 03-04-2010 |
20100061473 | METHOD AND APPARATUS FOR SELECTING MODULATION AND CODING SCHEME (MCS) INDEX BASED ON FREQUENCY SELECTIVITY - A method of selecting a modulation and coding scheme (MCS) index in a wireless communication system is disclosed. More specifically, the method includes measuring a frequency selectivity of a receiving channel, selecting a MCS index having a coding rate below a prescribed coding rate threshold value if the measured frequency selectivity is greater than or equal to a specified frequency selectivity threshold, and selecting the MCS index having the coding rate above or equal to the prescribed coding rate threshold value if the measured frequency selectivity is less than the specified frequency selectivity threshold. | 03-11-2010 |
20100067367 | METHOD OF SELECTING MODULATION AND CODING SCHEME (MCS) INDEX IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR IMPLEMENTING THE SAME - A method of selecting a modulation and coding scheme (MCS) in a wireless communication system is disclosed. More specifically, the method includes selecting a MCS index having a coding rate that is greater than a specified coding rate threshold if a resource allocation scheme of a transmitting end employs a localized resource allocation scheme, and selecting the MCS index having the coding rate that is less than the specified coding rate threshold if the resource allocation scheme of the transmitting end employs the distributed resource allocation scheme. | 03-18-2010 |
20100177717 | GROUPING BASED RESOURCE ALLOCATION METHOD, METHOD FOR TRANSMITTING SIGNAL USING THE SAME, AND GROUPING BASED RESOURCE ALLOCATION CONTROLLER - A grouping based resource allocation method, a method for transmitting a signal using the same, and a grouping based resource allocation controller are disclosed. That is, the method including grouping a plurality of user equipments (UEs) to a predetermined number of groups using feedback information received from the plurality of UEs and dynamically allocating communication resources to the UEs included in the groups according to the group based feedback information and the method for transmitting the signal using the same are disclosed. In addition, a grouping based resource allocation controller including a grouping module and control module for performing the above-described method in a base station is disclosed. | 07-15-2010 |
20100183057 | METHOD FOR TRANSMITTING/RECEIVING MULTIPLE CODEWORD IN A MULTIPLE INPUT MULTIPLE OUTPUT COMMUNICATION SYSTEM - A method for transmitting a multiple codeword (MCW) in a Multiple Input Multiple Output (MIMO) communication system is disclosed. A method for transmitting a multiple codeword (MCW) in a Multiple-Input Multiple-Output (MIMO) communication system includes performing a channel coding and modulation process for each codeword of the multiple codeword (MCW), multiplying the channel-coded-modulated result by a rotation matrix decided by either a spatial multiplexing rate or a layer (R), and performing a codeword permutation (CP) on the multiple codeword (MCW), performing a MIMO encoding on the multiple codeword (MCW), and transmitting the multiple codeword (MCW) via a multi-antenna. | 07-22-2010 |
20100195615 | TECHNIQUE FOR TRANSMITTING AND RECEIVING DOWNLINK REFERENCE SIGNALS - A technique for receiving and transmitting downlink reference signals is disclosed. When transmitting downlink data demodulation reference signals (DMRS) (or reference signals for downlink data demodulation) by using two or more layers, the DMRS of each layer may be multiplexed by using a code division multiplexing method and then transmitted. The DMRS for each of the two or more layers may be used for one user equipment or for two or more user equipments. And, downlink control signals for transmitting and receiving such DMRS may be configured to have the same format regardless of a single-user mode (or SU-MIMO mode) or a multi-user mode (or MU-MIMO mode), thereby being used. | 08-05-2010 |
20100195662 | METHOD FOR SUB-PACKET GENERATION WITH ADAPTIVE BIT INDEX - A method of generating a sub-packet in consideration of an offset is disclosed. A method of generating a sub-packet in consideration of an offset, for re-transmission of a packet from systematic bits and parity bits stored in a circular buffer includes turbo-coding an input bitstream at a predetermined code rate and generating and storing the systematic bits and the parity bits in the circular buffer, and deciding a starting position of the sub-packet in the circular buffer in consideration of the offset for puncturing at least a portion of the systematic bits of the circular buffer. Accordingly, it is possible to efficiently decide the starting position of the sub-packet to be transmitted adaptively with respect to a variable packet length, improving a coding gain, reducing complexity and reducing a calculation amount. | 08-05-2010 |
20100208838 | UPLINK PRECODING METHOD IN 4-Tx SYSTEM - A method for a user equipment to precode and transmit an uplink signal efficiently in a 4-antenna system and a method for a base station to receive the transmitted signal efficiently are disclosed. Four antennas of a user equipment can be grouped by a 2-antenna unit. In consideration of this antenna group, it is able to perform precoding using antenna selection/DFT matrix of the antenna group unit. Moreover, a rank-3 codebook can be configured to include a precoding matrix of a type in consideration of power balance per antenna and a precoding matrix including one non-zero component only in one row for maintaining a good CM property. | 08-19-2010 |
20100220801 | UPLINK PRECODING METHOD IN 4-Tx SYSTEM - A method for a user equipment to precode and transmit an uplink signal efficiently in a 4-antenna system and a method for a base station to receive the transmitted signal efficiently are disclosed. Four antennas of a user equipment can be grouped by a 2-antenna unit. In consideration of this antenna group, it is able to perform precoding using antenna selection/DFT matrix of the antenna group unit. Moreover, a rank-3 codebook can be configured to include a precoding matrix of a type in consideration of power balance per antenna and a precoding matrix including one non-zero component only in one row for maintaining a good CM property. | 09-02-2010 |
20100222055 | METHOD OF PERFORMING CELL RESELECTION PROCEDURE IN WIRELESS COMMUNICATION SYSTEM - A method of performing a cell reselection procedure in a wireless communication system includes evaluating priorities of a serving cell and neighbor cells, each of which use different frequency bands, performing inter-frequency measurement on a neighbor cell which has a higher priority than the serving cell, performing the inter-frequency measurement on a neighbor cell which has an equal or lower priority than the serving cell, when a signal characteristic of the serving cell is less than a threshold, and performing cell reselection according to the priorities. | 09-02-2010 |
20100239036 | METHOD AND APPARATUS FOR TRANSMITTING PRECODING MATRIX INDEX IN A WIRELESS COMMUNICATION SYSTEM USING CoMP SCHEME - A method and apparatus for transmitting a Precoding Matrix Index (PMI) in a Coordinated Multi-Point (COMP) communication system are disclosed. The method includes receiving signals in a same frequency band from Base Stations (BSs) included in a CoMP set, which operate in joint processing mode, selecting a first precoding matrix for each of the BSs using the received signals, generating a second precoding matrix by combining the first precoding matrices, and transmitting an index of the second precoding matrix to a serving BS among the BSs. | 09-23-2010 |
20100291940 | Apparatus and Method for Transmitting CoMP Feedback Information - A method of efficiently transmitting CoMP feedback information from an user equipment, which performs CoMP operation, in a wireless communication system to reduce inter-cell interference is disclosed. The user equipment requests a neighboring cell, which affects the user equipment through interference, to restrict use of a specific beam pattern group in a serving cell direction. In this case, whether the user equipment will request such restriction is determined based on a channel status value of the user equipment. If the user equipment determines to request such restriction, the user equipment transmits a request message to a serving base station, the request message requesting to restrict use of the specific beam pattern group. In this case, the user equipment performs scheduling and requests a specific neighboring cell to restrict use of the specific beam pattern group at a specific resource region. | 11-18-2010 |
20100296473 | METHOD OF TRANSMITTING AND RECEIVING RADIO CHANNEL - A method for efficiently transmitting and receiving a control channel and/or a data channel in a radio communication system using multiple carriers is described. The embodiments of the present invention provide various multi-carrier system structures and various methods for setting a reference carrier in a multi-carrier system. The embodiments of the present invention also provide methods for efficiently transmitting control channels using a coordination field. | 11-25-2010 |
20110003567 | METHOD OF EFFICIENT POWER BOOSTING - An efficient power boosting method is provided. In the method, a first resource element for boosting power, a second resource element for achieving synchronization with a specific channel, and a third resource element for transmitting data are allocated to a predetermined resource region. Then, power of at least one of the second resource element and the third resource element is boosted using power allocated to the first resource element and information is transmitted using the predetermined resource region. | 01-06-2011 |
20110009137 | METHOD OF MEASURING INTERFERENCE - A method of measuring interference to perform efficient data communication is disclosed. A method of measuring interference of neighboring cells comprises allocating one or more first resource elements, to which pilot signals are allocated, to predetermined symbol regions included in a first resource block; allocating one or more second resource elements for measuring interference of the neighboring cells to a first symbol region of the predetermined symbol regions; and measuring interference of the neighboring cells using the one or more second resource elements. | 01-13-2011 |
20110013581 | Method for Channel Allocating in Wireless Access System - A method for allocating uplink and downlink physical channels to improve throughput of a wireless access system is disclosed. A method for allocating channels to optimize a wireless access system which supports radio frequencies comprises configuring one or more physical channels in a transmitter; allocating first physical channels to a receiver considering features of the one or more physical channels; and transmitting one or more control channels to the receiver through a predetermined physical channel of the first physical channels, the control channels including configuration information of the first physical channels allocated to the receiver. | 01-20-2011 |
20110013595 | METHOD FOR REDUCING HANDOVER INTERRUPTION TIME IN TERMINAL - A method for reducing handover interruption time in a mobile station is disclosed, in which a mobile station performs a ranging procedure using a dedicated ranging code previously allocated from a target base station. The dedicated ranging code allocated by the target base station may be provided through the serving base station, or may directly be provided from the target base station. | 01-20-2011 |
20110038285 | METHOD FOR TRANSMITTING SUB-FRAME DESIGNATION INFORMATION TO A DOWNLINK IN A RADIO COMMUNICATION SYSTEM - A method of transmitting subframe designating information in downlink in a wireless communication system is disclosed. The present invention includes generating the subframe designating information for designating a subframe of a specific type in a radio frame and transmitting the generated subframe designating information to a user equipment, wherein the subframe designating information includes initial location information indicating an initial location of the subframe of the specific type on the radio frame and period information indicating a period for the subframe of the specific type to be repeated. | 02-17-2011 |
20110044287 | METHOD FOR REDUCING HANDOVER LATENCY - The present invention relates to a handover procedure, and more particularly, to a method of reducing latency in performing handover using fast ranging. The present invention includes the steps of receiving a handover message including a specific ranging code and uplink resource information from a serving base station and transmitting the specific ranging code to a target base station using the uplink information. | 02-24-2011 |
20110060970 | METHOD OF PERFORMING INTERLEAVING AND DATA TRANSMISSION APPARATUS - A method of performing interleaving and a data transmission apparatus are disclosed, in which interleaving is performed for input data streams using bit reverse ordering (BRO) operation. A method of performing interleaving for input data streams comprises writing respective bits of the input data stream in a row direction of a memory matrix in accordance with the input order, performing row permutation for index of each row of the memory matrix using an R-bit (R is an integer) bit reverse ordering (BRO) operation, performing pruning for a row which satisfies a given condition, performing column permutation using BRO operation for index of each column of the memory matrix, and reading to output each bit in a column direction of the memory matrix where the column permutation has been performed. | 03-10-2011 |
20110110357 | UPLINK TRANSMISSION CONTROL METHOD IN SYSTEM SUPPORTING AN UPLINK MULTIPLE ACCESS TRANSMISSION MODE - Disclosed herein is a method of generating an uplink reference signal in a system supporting a plurality of uplink access schemes. The method includes, at a base station, transmitting reference signal configuration information indicating the configuration of a reference signal to be transmitted in uplink, which is generated according to the plurality of uplink access schemes, to a user equipment which is set to operate in an uplink access scheme corresponding to the information, and receiving a subframe including the reference signal generated based on the reference signal configuration information from the user equipment. The reference signal configuration information includes a cyclic shift value of a sequence of the reference signal. | 05-12-2011 |
20110126068 | SIGNAL TRANSMISSION METHOD USING MULTIPLE HARQ - A method is described for transmitting signals in a mobile communication system which splits an information block into a plurality of split-information blocks and performs a hybrid automatic repeat request (HARQ) process upon each of the split-information blocks. A method is also described for reducing control information overhead by transmitting control information only through one control channel when splitting an information block and transmitting split-information blocks through a plurality of subframes or a plurality of resource blocks. The segmentation of the information block is performed in a physical layer to reduce medium access control (MAC) overhead and to simplify implementation. | 05-26-2011 |
20110128901 | METHOD FOR SAVING POWER IN A MULTI-CARRIER WIRELESS ACCESS SYSTEM - A method for saving power in a multi-carrier wideband wireless access system is provided. A method for saving the power of a receiver in a multi-carrier wireless communication system includes acquiring multi-carrier information from a transmitter on a primary carrier, entering one or more secondary carriers satisfying a predetermined power saving mode entry condition out of one or more secondary carriers included in the multi-carrier information into a power saving mode, and receiving data during a listening interval according to the power saving mode on the one or more secondary carriers entering the power saving mode. The multi-carrier information includes at least one of information about a plurality of available carriers, information indicating the primary carrier and the one or more secondary carriers out of the plurality of available carriers, and information about the power saving mode entry condition of the one or more secondary carriers. | 06-02-2011 |
20110128942 | METHOD FOR TRANSMITTING CONTROL INFORMATION ABOUT DOWNLINK MULTIPLE CARRIERS IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting uplink control information in a wireless communication system is disclosed. The method includes receiving one or more downlink component carriers among N downlink component carriers created by dividing a multi-carrier by an integer N, and transmitting control information about the received one or more downlink component carriers in one or more uplink component carriers among N uplink component carriers created by dividing a multi-carrier by the integer N, wherein the control information about the received one or more downlink component carriers is distributed equally or unequally to the one or more uplink component carriers and the control information includes at least one of a Channel Quality Information/Precoding Matrix Index (CQI/PMI), an ACKnowledgment/Negative ACKnowledgment (ACK/NACK), and a Rank Indication (RI). | 06-02-2011 |
20110134747 | Method for Uplink Transmitting Control Information - A method for uplink transmitting control information from a user equipment in a wireless communication system comprises selecting a specific point among a plurality of points distributed into a symbol space, corresponding to control information, the symbol space including a modulation dimension and a sequence dimension; mapping a signal corresponding to the specific point with a control channel including single carrier-frequency division multiple access (SC-FDMA) symbols; and transmitting the control channel. Preferably, the specific point belongs to the sequence dimension. | 06-09-2011 |
20110158219 | METHOD FOR TRANSMITTING DATA IN MULTIPLE ANTENNA SYSTEM - A method of sending data in a multiple antenna system according to an aspect of the present invention includes performing precoding on received symbols based on a second codebook generated from a first codebook for a plurality of transmission antennas and sending the precoded symbols. The second codebook is a codebook for transmission antennas which are a multiple of an integer of the plurality of transmission antennas, and a precoding matrix included in the second codebook is generated by a combination of precoding matrices included in the first codebook. | 06-30-2011 |
20110188594 | METHOD AND APPARATUS FOR TRANSMITTING SIGNALS - Disclosed herein is a method for transmitting signals in a wireless communication system, including joint coding one or more signals, separating the joint coded signal by a number of a plurality of channel aggregation used for transmission, respectively allocating the separated signals to the plurality of the channel aggregation, and transmitting the signals, such that a receiver smoothly performs decoding. | 08-04-2011 |
20110200002 | SIGNAL TRANSMISSION METHOD AND DEVICE IN WIRELESS COMMUNICATION SYSTEM - Provided is a method and device for signal transmission having good PAPR/CM characteristics. With regard to one aspect of said method, the method for transmitting a reference signal in a wireless communication signal comprises a step wherein a reference signal sequence is generated, a step wherein said reference signal sequence is divided with respect to each of multiple sub-blocks, a step wherein each of said plurality of divided reference signal sequence is subject to circular shifting, and a step wherein said plurality of circular shifted reference signals are transmitted via said plurality of sub-blocks. | 08-18-2011 |
20110200143 | METHOD FOR TRANSMITTING SOUNDING REFERENCE SIGNAL SEQUENCE USING PLURAL ANTENNAS - Disclosed is a method for transmitting a sounding reference signal from a mobile terminal that includes plural antennas. Different plural sounding reference signal sequences that have mutual orthogonality are mapped to each antenna, and then transmitted. Or, the same sounding reference signal sequence is mapped to the plural antennas after precoding or cyclic delay diversity processing, and then transmitted. | 08-18-2011 |
20110201333 | Method for Receiving Control Information in Wireless Communication System and Apparatus Therefor - A method of receiving a control signal by a user equipment in a wireless communication system is disclosed. The present invention includes receiving control regions including the control channel relevant to each of a plurality of component carriers via a plurality of component carriers and detecting the control channel for the user equipment by performing blind decoding by a unit of CCE (control channel element) aggregated at a preset level in a search space included in the control regions. And, start positions of the search spaces in the plurality of component carriers is in a certain relationship. Moreover, the preset level is identically set for each of the plurality of component carriers. | 08-18-2011 |
20110201371 | METHOD AND APPARATUS FOR TRANSMITTING SIGNAL IN A WIRELESS COMMUNICATION SYSTEM USING COMP - A method for transmitting a signal to a UE by a BS in a wireless communication system is disclosed. The method includes determining a signal transmission scheme for transmitting a signal to the UE, dividing a basic resource allocation unit, if the signal transmission scheme is CoMP transmission, allocating transmission resources to the UE using the divided basic resource allocation unit, and transmitting the signal to the UE through the allocated transmission resources. | 08-18-2011 |
20110205996 | METHOD OF HARQ ACKNOWLEDGEMENT TRANSMISSION AND TRANSPORT BLOCK RETRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - A method of transport block retransmission in a wireless communication system employing carrier aggregation is disclosed. A method of retransmitting transport blocks in a base station of a wireless communication system employing carrier aggregation comprises mapping each of a plurality of transport blocks to each of a plurality of component carriers using a first mapping pattern and transmitting the plurality of transport blocks to a mobile station; recognizing that the plurality of transport blocks are not transmitted successfully; and mapping each of the plurality of transport blocks to each of the plurality of component carriers using a second mapping pattern and retransmitting the plurality of transport blocks to the mobile station. | 08-25-2011 |
20110206000 | METHOD FOR RANDOM ACCESS TO UPLINK IN MULTI-CARRIER AGGREGATION ENVIRONMENT - The present invention relates to an access method for solving ambiguity between an initial access mobile station and a base station, wherein the ambiguity occurs in a carrier aggregation environment. When a base station transmits a downlink message including different downlink ID information through plural downlink carriers, a base station obtains the corresponding downlink ID information through a downlink carrier used by the mobile station. The mobile station transmits an uplink message using the obtained downlink ID information, and the base station extracts the downlink ID information from the uplink message in order to confirm which downlink carrier the mobile station uses. | 08-25-2011 |
20110228735 | METHOD AND BASE STATION FOR TRANSMITTING REFERENCE SIGNALS, AND METHOD AND USER EQUIPMENT FOR RECEIVING REFERENCE SIGNALS - A method and apparatus for multiplexing reference signals in a predetermined number of Code Division Multiplexing (CDM) groups to balance power across Orthogonal Frequency Division Multiplexing (OFDM) symbols are disclosed. In a wireless communication system, orthogonal sequences used for spreading the reference signals are allocated such that the order of orthogonal sequences allocated to a subcarrier of one CDM group has a predetermined offset with respect to the order of orthogonal sequences allocated to a subcarrier of another CDM group, adjacent to the subcarrier of the one CDM group. | 09-22-2011 |
20110235608 | METHOD FOR TRANSMITTING AND RECEIVING A COMP REFERENCE SIGNAL IN A MULTI-CELL ENVIRONMENT - Disclosed is a channel estimation method using a cooperative multi-point (CoMP) reference signal in a multi-cell environment. The method comprises a CoMP reference signal receiving step of enabling a terminal to receive, from each of the cells that perform a CoMP operation, a CoMP reference signal where an orthogonal code is applied to each of the cells; a channel estimation step of enabling the terminal to estimate, using said CoMP reference signal, channels of each of the cells which perform said CoMP operation; and a channel status feedback information transmitting step of enabling the terminal to transmit channel status feedback information to each of the cells. | 09-29-2011 |
20110255496 | Method of Mapping Transport Sequences to Component Carriers in a Wireless Communication System - A method of mapping transport sequences to component carriers in a wireless communication system is disclosed. A method of mapping transport sequences to a plurality of component carriers in a transmitter of a wireless communication system that supports carrier aggregation comprises changing the order of the transport sequences in accordance with mapping information; and transmitting the transport sequences of which order has been changed, to a receiver through the plurality of component carriers. | 10-20-2011 |
20110261775 | METHOD AND APPARATUS FOR TRANSMITTING SIGNALS SEGMENTATION - A method for transmitting a transport block includes segmenting the transport block into code blocks corresponding in number to a multiple of the number of layers to be used for the transmission of the transport block, attaching a Cyclic Redundancy Check (CRC) to the segmented code blocks, sequentially mapping the code blocks to which the CRC has been attached to at least one layer according to a predetermined mapping rule, and transmitting the code blocks. | 10-27-2011 |
20110268032 | METHOD FOR EFFICIENTLY TRANSMITTING PHYSICAL CHANNEL IN MULTI-CARRIER AGGREGATION STATE TO SUPPORT BROADBAND - The present invention relates to a wireless connection system, and more specifically to a method for efficiently transmitting a control channel in a multi-carrier aggregation state. According to one aspect of the invention, a method for enabling a terminal to transmit data in a broadband wireless connection system that supports multiband comprises the steps of: receiving uplink acknowledgement information from a base station through a first downlink component carrier among plural downlink component carriers available in the terminal; transmitting data to the base station through an uplink resource indicated by the uplink acknowledge information; and receiving feedback information from the base station through the first control channel of the first downlink component carrier, wherein the feedback information indicates whether there is an error in the reception of the transmitted data. | 11-03-2011 |
20110269407 | METHOD AND APPARATUS FOR INTER-CELL SYNCHRONIZATION IN A MULTI-CELL ENVIRONMENT - The present invention relates to a method for synchronizing multiple cells, which perform cooperative multi-input multi-output operations, as well as to a method for inter-cell synchronization in a multi-cell environment, comprising the steps of: measuring a propagation delay of a cooperative base station; transmitting the measured propagation delay to a serving base station; and receiving data for cooperative multi-input multi-output operations in which a transmission location is adjusted, on the basis of the propagation delay of the cooperative base station, when the serving base station transmits the propagation delay to the cooperative base station. | 11-03-2011 |
20110269459 | METHOD AND APPARATUS FOR DETERMINING CELL FOR EXECUTING COMP IN MULTI-CELL ENVIRONMENT - The present invention provides a method which determines an adjacent cell to carry out a coordinate multipoint transmission (CoMP) operation instead of performing the CoMP operation for all adjacent cells, in cases where precoding matrix indexes (PMI) of adjacent cells are limited to prevent interferences by adjacent cells in a multi-cell environment, thereby effectively reducing inter-cell interferences without causing an overhead. | 11-03-2011 |
20110274047 | Method for Receiving a Signal at a User Equipment (UE) in a Wireless Communication System - A method of receiving a signal at a user equipment (UE) from at least two cells in wireless communication system is disclosed. Receiving module may receive data and at least one reference signal from a CoMP (Coordinated Multi-Point) set including at least two cells. Decoding module may decode the received data and the received at least one reference signal. In this case, a power level of the data is same as a power level of the at least one reference signal, or a power ratio between the data and the at least one reference signal is a scaled value. Also, the power level of the data and the at least one reference signal are same for each of the at least two cells. A power ratio between the data and the at least one reference signal is a same scaled value for each of the at least two cells. | 11-10-2011 |
20110274067 | METHOD FOR TRANSMITTING PILOT SYMBOLS IN DOWNLINK MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM - The present invention relates to a method for transmitting pilot signals in a downlink multiple-input multi-output (MIMO) system which supports a first user equipment (UE) for supporting an N number of transmitter antennas from among a total M number of transmitter antennas, and a second UE for supporting said M (wherein, M>N) number of transmitter antennas. The method comprises the steps of: enabling a base station to map pilot symbols in a resource block (RB) on a subframe for transmitting user-specific pilot symbols which can be recognized only by the second UE; and enabling the base station to transmit the subframe in which the pilot symbols are mapped. The cell-specific pilot symbols for transmitter antenna port 0 to N−1, which can be recognized by both the first UE and the second UE, and the user specific pilot symbols for transmitter antenna ports N to M−1, which can be recognized only by the second UE, are mapped in the allocated resource block. | 11-10-2011 |
20110274099 | METHOD FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS MOBILE COMMUNICATION SYSTEM - The present invention relates to a method for transmitting control information by a terminal in a wireless mobile communication system using multiple uplink carriers. The method for transmitting control information comprises: multiplexing a first control information to be assigned to a first uplink control channel and a second control information to be assigned to a second uplink control channel; and transmitting the multiplexed first and second control information via an uplink channel that is allocated to one of the multiple uplink carriers. Here, the first uplink control channel and the second uplink control channel are respectively allocated to different uplink carriers. | 11-10-2011 |
20110275363 | METHOD FOR IDENTIFYING A MBSFN SUBFRAME AT A USER EQUIPMENT (UE) IN A WIRELESS COMMUNICATION SYSTEM - A method for identifying a MBSFN (Multimedia Broadcast multicast service Single Frequency Network) subframe at a user equipment (UE) in a wireless communication system is disclosed. Receiving module may receive receiving a subframe type information from an base station (BS). Receiving module may receive type information of the MBSFN subframe. The identifying module may identify an index of a MBSFN subframe based on the received subframe type information. The identifying module may identify a type of the MBSFN subframe based on the received type information of the MBSFN subframe. Decoding module may decode only a physical control channel region of the MBSFN subframe based on the identified type of the MBSFN subframe. Alternatively, Decoding module may decode the MBSFN subframe if the identified type of the MBSFN subframe is a decodable type or a known type. | 11-10-2011 |
20110280203 | METHOD AND APPARATUS FOR INFORMATION TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM - Provided are a method and an apparatus for information transmission that is performed by a transmitter in a wireless communication system. The method comprises the steps of: acquiring a first resource index and a second resource index; generating information sequences based on the first resource index and the second resource index; and transmitting the information sequences via a first antenna and a second antenna, wherein the second resource index is acquired from the first resource index and the offset. | 11-17-2011 |
20110286397 | WIRELESS DEVICE IN MULTICARRIER SYSTEM - A wireless device and method for a multiple carrier system are provided. The wireless device comprises a carrier management unit for determining at least one of a plurality of carriers as a reference carrier for monitoring a control channel and a control channel unit for monitoring the control channel over the reference carrier, wherein the carrier management unit switches the reference carrier to at least one of remaining carriers of the plurality of carriers. Accordingly, control channel traffic can be prevented from concentrating on a particular carrier, and a diversity gain can be achieved. | 11-24-2011 |
20110286398 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATIONS SYSTEM THAT SUPPORTS COORDINATED MULTI-POINT (COMP) INCLUDING MULTIPLE TRANSMISSION POINTS - The present system relates to a method for transmitting control information in a wireless communications system that supports coordinated multi-point (CoMP) including N (N>1) transmission points. The method comprises: generating control information for downlink transmission of the N transmission points; and transmitting the generated control information to a user device, wherein the control information contains a control information region for transmission of intrinsic control information on a reference transmission point among the N transmission points, and N−1 control information regions for transmission of intrinsic control information on the N−1 transmission points. | 11-24-2011 |
20110286411 | EFFICIENT INITIAL ACCESS SYSTEM UNDER A MULTI-CARRIER COMBINATION CONDITION FOR SUPPORTING BROADBAND - The present invention relates to a wireless access system, and more particularly, to an initial system under a multi-carrier combination condition. A method of for performing an initial access in a base station which supports the multi-band of a terminal according to one embodiment of the present invention comprises the steps of: searching one or more downlink component carriers of the base station; receiving system information including a broadcast channel of a first downlink component carrier from among the searched one or more downlink component carriers and information for indicating one or more uplink component carriers connected to the first downlink component carrier; transmitting a first message to the base station through a first uplink component carrier from among one or more uplink component carriers indicated by the received system information; and receiving a second message including uplink authorization information from the base station through the first downlink component carrier. | 11-24-2011 |
20110286440 | METHOD FOR TRANSMITTING REFERENCE SIGNAL FOR TERMINAL DEMODULATION IN RADIO MOBILE COMMUNICATION SYSTEM, AND APPARATUS FOR IMPLEMENTING THE SAME - The present invention relates to a method for transmitting a data demodulation reference signal in a radio mobile communication system. The method comprises: a step for generating a sub-frame including the data demodulation reference signal, and a step for transmitting the generated sub-frame. The 1st and 2nd demodulation reference signal pattern groups include plural demodulation signal patterns orthogonal to each other, and are differentiated from each other with regard to time-frequency resources. In the data demodulation reference signal, demodulation reference signal patterns which are respectively orthogonal to each other M (M≦N) and N−M times are respectively included in the 1st and 2nd demodulation reference signal pattern groups if the rank is N. | 11-24-2011 |
20110292825 | METHOD FOR TRANSMITTING COMMON REFERENCE SIGNAL IN DOWNLINK MIMO SYSTEM - The present invention relates to a method for transmitting a-reference signals for measuring a channel in a downlink MIMO (Multi Input Multi Output) system The method comprises the steps of: configuring, by a base station at which N | 12-01-2011 |
20110292856 | METHOD OF ALLOCATING PAGING CARRIER AND MOBILE STATION - A method of allocating a paging carrier in a multi-carrier environment is disclosed. The method of allocating the paging carrier includes receiving a first message including first allocation information of the paging carrier, transmitting a second message for requesting entry into an idle mode to a base station; and receiving a third message including second allocation information of a changed paging carrier from the base station. At this time, the paging carrier includes a paging channel out of multiple carriers including one or more carriers. | 12-01-2011 |
20110299443 | EFFICIENT MAC HEADER DESIGN AND COMMUNICATION USING SAME - A signal transmission method is provided, wherein, when a transmitter transmits a signal to a receiver, a transmitter processor multiplexes a plurality of data for a plurality of connections to be transmitted to one specific receiver, and constitutes a multiplexed medium access control (MAC) packet data unit (PDU) containing a MAC header part for receiving the multiplexed data, and a MAC PDU payload containing the multiplexed data, and the transmitter transmits the multiplexed MAC PDU to the specific receiver. The MAC header part includes a first header part containing a generic MAC header, and a second header part containing an extended header indicator serving as a 1-bit indicator for indicating the existence of an extended header (EH) for each flow ID for each of the plurality of connections. The MAC header part further includes a third header part which selectively contains the extended header for each flow ID in accordance with the extended header indicators for each flow ID. | 12-08-2011 |
20110299467 | METHOD OF TRANSMITTING CHANNEL QUALITY INFORMATION OF DOWNLINK MULTI CARRIERS IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting channel quality information in a wireless communication system is disclosed. The method of transmitting channel quality information from a mobile station in a wireless communication system includes generating channel quality information of a downlink multi carrier including N number of downlink component carriers; and transmitting the generated channel quality information to a base station through at least one of a physical uplink control channel (PUCCH) a physical uplink shared channel (PUSCH) on a single uplink component carrier. | 12-08-2011 |
20110305185 | Method of Transmitting and receiving Data in a Wireless System - A method of transmitting data in a wireless communication is disclosed, by which timing error can be solved in a multi-cell environment. The present invention, in which data is transmitted by a serving cell to a mobile station communicating with a plurality of cells in a wireless communication system, includes receiving information on delay times of signals from the mobile station, wherein the signals are received by the mobile station from the plurality of the cells and transmitting data to the mobile station by inserting a cyclic prefix (CP) having a length determined according to the information on the delay times into the data. | 12-15-2011 |
20110305223 | Method and Apparatus for Data Communication Through a Coordinated Multi-Point Transmission - The present invention relates to a method and an apparatus for data communication through a Coordinated Multi-Point Transmission in a multiple cell environment. According to the present invention, the data communication method through a coordinated multi-point transmission in a multiple cell environment including a serving base station and a cooperative base station for performing a coordinated multi-point transmission comprises the steps of: receiving data from the serving base station and the cooperative base station through a downlink channel; and demodulating the received data. Each datum transmitted from the serving base station and the cooperative base station includes a predetermined Reference Signal and a data Resource Element, and a Transmit Diversity is applied to the data resource elements of both the serving base station and the cooperative base station through Pairing. | 12-15-2011 |
20110305287 | Method of Transmitting Signal in a Wireless System - A method of transmitting a signal of a mobile station that performs communication with a plurality of cells in a wireless communication system comprises transmitting a control signal or a data signal through an asynchronous channel to a neighboring cell which is not synchronized with the mobile station, the asynchronous channel including cyclic prefix and guard time. | 12-15-2011 |
20110306383 | METHOD AND DEVICE FOR CONTROLLING TRANSMISSION POWER IN UPLINK TRANSMISSION - A user equipment in wireless communication system is provided. The user equipment includes an antenna unit including a plurality of antennas, a control unit for grouping the plurality of antennas into a predetermined number of antenna groups and controlling separately transmission power of each of the predetermined number of antenna groups, and a transmitting unit, connected to the control unit, for transmitting at least one of data and control information to a base station via at least one of the predetermined number of antenna groups. | 12-15-2011 |
20110312326 | METHOD FOR SWITCHING OPERATING CARRIER AT A USER EQUIPMENT IN WIRELESS COMMUNICATION SYSTEM - The method for switching operating carrier at a user equipment is disclosed. In aspect of the present invention, the user equipment receive target carrier information indicating a target carrier of the UE and target carrier transition time information indicating a time difference between receiving timing of transition indication and transition completion timing from an base station. And the UE may switch from a current operating carrier to the indicated target carrier based on the received the target carrier transition time information and the target carrier information. In case that the target carrier information and the target carrier transition time information is transmitted via a high layer signaling, the UE may transmit ACK/NACK confirm signal indicating whether the target carrier transition time information and the target carrier information is received without error via on the target carrier and the current operating carrier to the base station. | 12-22-2011 |
20110317614 | METHOD FOR TRANSMITTING AN UPLINK SIGNAL AND FEEDBACK INFORMATION, AND RELAY APPARATUS USING THE METHOD - The invention relates to a method for transmitting an uplink signal and feedback information of a relay, and to a relay apparatus using the method. The relay can receive information, constituting a downlink backhaul subframe and an uplink backhaul subframe from a base station. The relay can transmit an uplink signal via the relevant uplink backhaul subframe on the basis of the received information constituting the uplink backhaul frame. Further, the relay can receive a downlink reference signal from the base station, measure the status of a channel, and transmit the status of the channel in values, in various formats and in various points in time and cycles, to the base station. | 12-29-2011 |
20110317637 | METHOD FOR PROCESSING AND TRANSMITTING DATA PACKET - A method for processing and transmitting data packet is disclosed. The method includes receiving a data packet with a first Redundancy Version (RV) from a serving cell, receiving a data packet with a second RV different from the first RV from a collaborative cell, and combining and decoding the data packets received from the serving cell and the collaborative cell. | 12-29-2011 |
20110317653 | METHOD FOR ALLOCATING RESOURCE TO UPLINK CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - A method for allocating resource to ACK (Acknowledgment)/NACK (Negative-ACK) transmission in a wireless communication system is disclosed. The method includes receiving scheduling information included in a plurality of downlink control channels and data included in a plurality of downlink data channels, over multiple downlink component carriers from a base station, determining ACK/NACK responses corresponding to the data, and allocating resource to the ACK/NACK responses based on the scheduling information corresponding to each of the plurality of downlink control channels and downlink component carrier-dependent offset values. | 12-29-2011 |
20120002635 | METHOD AND APPARATUS FOR SUPPORTING CARRIER AGGREGATION - The present invention relates to a method and to an apparatus for supporting carrier aggregation. More particularly, the present invention relates to a method for enabling user equipment to receive a signal from a base station in a wireless communication system which supports carrier aggregation, wherein said the method comprises the steps of: setting a first component carrier to a paused state; receiving state change information for the first component carrier via the second component carrier during the paused state of the first component carrier; and monitoring a control channel via the first component carrier if the state change information indicates a predetermined value. The present invention also relates to an apparatus for the method. | 01-05-2012 |
20120008585 | METHOD FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - A method for transmitting ACK/NACK (Acknowledgement/Negative ACK) signals in a wireless communication system is disclosed. The method comprises receiving a plurality of data blocks from a base station; generating ACK/NACK signals corresponding to the plurality of data blocks; allocating resources for transmitting ACK/NACK signals, wherein the resources are allocated independently per slot; and transmitting the ACK/NACK signals through one uplink component carrier by using the allocated resources. Preferably, the step of allocating resources includes allocating the resources to minimize the difference in the number of the ACK/NACK signals transmitted per slot. | 01-12-2012 |
20120008586 | DOWNLINK CONTROL INFORMATION RECEIVING METHOD IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - The present invention discloses a method for receiving downlink control information by a terminal in a wireless communication system. More specifically, the method comprises the steps of receiving a coordination field from a base station and receiving control information on more than one component carrier that is allocated to the terminal, on the basis of the coordination field, wherein the coordination field includes more than one parameter for decoding the control information on the more than one component carrier. | 01-12-2012 |
20120008588 | METHOD FOR TRANSMITTING SOUNDING REFERENCE SIGNALS IN A WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME - The present invention relates to a method in which a user equipment transmits a plurality of sounding reference signals to a base station in a wireless communication system. More particularly, the method comprises the steps of: generating a plurality of sounding reference signals on the basis of repetition factors (RPFs) corresponding to the number of transmitting antennas; multiplexing the plurality of sounding reference signals to a frequency domain in the same OFDM symbol or SC-FDMA symbol on the basis of a transmitting antenna index; and transmitting the multiplexed sounding reference signals to the base station using a plurality of transmitting antennas. | 01-12-2012 |
20120009963 | Effective Method for Transmitting Control Information During the Combination of Multiple Carriers for Wideband Support - The present invention relates to wideband wireless access system, and more particularly to an effective method for transmitting control information during the combination of multiple carriers. As one embodiment of the present invention, there is provided a method by which a base station allocates a carrier to a terminal in a wideband wireless access system supporting multiple carriers, the method comprising: transmitting, to the terminal, a terminal specific or terminal group specific carrier allocation information that includes information about at least one of control information and data; and transmitting, to the terminal, a carrier combination control information that includes information about a change in the at least one candidate carrier available. | 01-12-2012 |
20120014329 | METHOD FOR TRANSMITTING ACK/NACK SIGNAL IN WIRELESS COMMUNICATION SYSTEM APPLIED CARRIER AGGREGATION AND APPARATUS THEREFOR - A method for transmitting ACK/NACK signal in a wireless communication system applied carrier aggregation is disclosed herein. More specifically, the method includes receiving multiple transmission blocks respectively through multiple downlink component carriers from a base station, determining ACK/NACK responses corresponding to each of the multiple transmission blocks by decoding the multiple transmission blocks, mapping the ACK/NACK responses to a ACK/NACK state information, and transmitting the ACK/NACK state information through a single uplink component carrier, wherein ACK information included in the ACK/NACK state information indicates a number of ACK response among the ACK/NACK responses. | 01-19-2012 |
20120021756 | CONTROL INFORMATION RECEIVING METHOD IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - Disclosed is a method for receiving control information by a terminal in a wireless communication system. More specifically, the method comprises the steps of receiving setup information on component carriers which are allocated to a terminal from a base station, determining one of 1 | 01-26-2012 |
20120026934 | METHOD FOR ENABLING RELAY NODE TO TRANSMIT UPLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM AND THE RELAY NODE - Disclosed is a method for enabling a relay node to transmit uplink control information. The relay node can receive resource allocation information and sequence information according to the transmission format of a physical uplink control channel set from a base station in advance. Additionally, the relay node can transmit the uplink control information, to which a sequence corresponding to the received sequence information is applied, in at least one slot of a resource area, which is indicated by the received resource allocation information, through a fixed number of symbols. | 02-02-2012 |
20120026935 | METHOD FOR DETECTING HARQ/NACK FEEDBACK SIGNAL FROM REPEATER - Disclosed is a repeater apparatus for detecting a downlink HARQ ACK/NACK feedback signal from a base station. An RF (Radio Frequency) unit receives specific channel configuration information which includes offset information indicating the starting point of a specific channel to which said HARQ ACK/NACK feedback signal is transmitted from the base station and the position of the specific channel allocated for an exclusive use of said repeater apparatus within said specific channel from said start point, and receives the HARQ ACK/NACK feedback signal from said base station for an uplink transmission of said repeater. The processor detects said specific channel allocated for exclusive use of the repeater apparatus based on said received specific channel configuration information thereby decoding said received HARQ ACK/NACK feedback signal. | 02-02-2012 |
20120039239 | SIGNAL TRANSMITTING/RECEIVING METHOD FOR A RELAY NODE AND RELAY NODE USING THE METHOD - Disclosed is a method in which a relay node transmits/receives signals via a specific downlink subframe and a specific uplink subframe. The relay node may consider the propagation delay in accordance with the distance between a base station and the relay node to set a subframe timing for transmitting/receiving signals to/from the base station. The relay node may further consider the delay time of 0.5 symbol, 1 symbol or the like in addition to said propagation delay in the event of setting a downlink receiving timing. Setting an uplink subframe timing of the relay node can be divided into the event the timing is set on the basis of a backhaul link and the event the timing is set on the basis of an access link. In the event thee timing is set on the basis of the access link, the propagation delay can bee double that of the vent the timing is set on the basis of the backhaul link, which should be considered in setting the timing. | 02-16-2012 |
20120039292 | Method and Apparatus for Transmitting/Receiving Data in a Wireless Communication System - The present invention relates to a method and apparatus for transmitting/receiving data in a wireless communication system. According to one aspect of the present invention, a data receiving method is provided wherein a mobile station in a wireless communication system uses a frame including a first subframe in which a physical downlink shared channel (hereinafter, referred to as “PDSCH”) includes a first cyclic prefix (hereinafter, referred to as “CP”) and a second subframe in which the PDSCH includes a second CP, wherein the data receiving method comprises a step in which the mobile station receives information on the length of the first CP from a base station, receives data from the base station through the first subframe, and removes the CP of the data using the information on the length of the first CP. The first CP and the second CP have different lengths. | 02-16-2012 |
20120040691 | METHOD FOR DETERMINING POSITION OF USER EQUIPMENT AND APPARATUS FOR PERFORMING SAME IN WIRELESS MOBILE COMMUNICATION SYSTEM - The present invention relates to a method for determining position of a user equipment in a wireless mobile communication system. The method comprises receiving a plurality of subframes including reference signals for positioning of the user equipment from a plurality of base stations periodically with a predetermined period of time; and determining position of the user equipment using reference signal time difference (RSTD) between the reference signals for positioning of the user equipment included in the received plurality of subframes, wherein a pattern of the reference signals for positioning of the user equipment is generated by repeating a diagonal mother matrix with dimension of 6×6, the pattern of the reference signals are mapped to orthogonal frequency division multiplexing (OFDM) symbols of the subframe, and the reference signals for positioning of the user equipment in a OFDM symbol in which common reference signal (CRS) is transmitted are punctured. | 02-16-2012 |
20120044896 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for a terminal for transmitting an uplink control signal, i.e., an ACK/NACK (Acknowledgement/Negative-ACK) signal, in a wireless communication system. In particular, the method comprises: mapping part of the ACK/NACK signals to selection information, which is composed of a combination of message areas and reference signal areas; independently selecting one message area and one reference signal from a plurality of control channel resources that are located in the same resource block, based on the mapped selection information; allocating the selected message area to the other ACK/NACK signals; and transmitting the ACK/NACK signal to a base station by using the selected message area and the selected reference signal area. | 02-23-2012 |
20120044899 | METHOD FOR RECEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME - The present invention discloses a method in which user equipment receives control information in a wireless communication system adopting carrier aggregation. In detail, the method comprises the steps of receiving a control region via one or more component carriers from among a plurality of component carriers transmitted by a base station, and performing a blind decoding process on the control region to obtain control information allocated to the user equipment, wherein the control region includes control information for said one or more component carriers or control information for the rest of the component carriers. | 02-23-2012 |
20120044921 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL SIGNAL FOR MERGING CARRIERS IN TRANSMISSION - Embodiments of the present invention are directed to a method and apparatus for transmitting and receiving a control signal (for example, PDCCH signal) in an asymmetric multicarrier environment. The method for transmitting a control signal for an asymmetric multicarrier in a wireless connection system according to one embodiment of the present invention comprises: determining the size of a carrier indicator field (CIF) indicating a downlink component carrier (DL CC) by which downlink data is transmitted, on the basis of a maximum value of the number of DL CCs and of the number of uplink component carriers (UL CCs) being managed in a base station; transmitting the CIF on a 1 | 02-23-2012 |
20120057498 | METHOD FOR POSITIONING USER EQUIPMENT IN A WIRELESS MOBILE COMMUNICATION SYSTEM, AND APPARATUS FOR PERFORMING THE METHOD - The present invention relates to a wireless communication system, and more particularly, to an apparatus for positioning a user equipment and method thereof. The present invention includes receiving, from a plurality of base stations including a serving cell, a predetermined number of consecutive positioning subframes in a radio frame at a predetermined period, each of the consecutive positioning subframe including a reference signal, measuring a time of arrival of the positioning subframes by using the reference signal, and transmitting a result of the measured time of arrival of the positioning subframe to the serving cell, wherein the predetermined period is set to be larger than a generation period of the reference signal and wherein sequences of the reference signals included in the consecutive positioning subframes are different from each other. | 03-08-2012 |
20120057551 | METHOD FOR MULTIPLEXING DATA AND CONTROL INFORMATION - A method for multiplexing a data information stream, including a systematic symbol and a non-systematic symbol, and a control information stream of at least three types in a wireless mobile communication system is disclosed. The method includes mapping the data information stream to a resource area so that the systematic symbol is not mapped to a specific resource area to which the control information stream is mapped, and mapping the control information stream to the specific resource area. | 03-08-2012 |
20120063386 | RELAY NODE AND METHOD FOR RECEIVING A SIGNAL FROM A BASE STATION IN A MOBILE COMMUNICATION SYSTEM - Provided are a method for receiving information on a relay node zone and reference signals for a relay node from a base station, and a relay node device using same. The relay node can receive information on at least one start point from the start points of a Relay-Physical Downlink Control Channel (R-PDCCH) and a Relay-Physical Downlink Shared Channel (R-PDSCH) for transmitting a signal from a base station to a relay node in a specific downlink subframe. Alternatively, the relay node can implicitly recognize the start points of the R-PDCCH and R-PDSCH set in advance. The relay node can recognize a signal from the base station in the specific downlink subframe based on the start point information after the time corresponding to at least one of the start points of the R-PDCCH and R-PDSCH. Also, the relay node can decode signals transmitted from a base station after the corresponding timing. | 03-15-2012 |
20120063426 | METHOD AND APPARATUS FOR TRANSMITTING SOUNDING REFERENCE SIGNAL IN RADIO COMMUNICATION SYSTEM - Disclosed is a method for transmitting a sounding reference signal from a terminal to a base station in a radio communication system. More specifically, the method comprises the steps of: receiving a transmission instruction signal for transmitting a non-periodic sounding reference signal from a base station; determining a time resource for transmitting said non-periodic sounding reference signal based on a specific subframe for transmitting the preset periodic sounding reference signal; and transmitting said non-periodic sounding reference signal to the base station using said determined time resource. | 03-15-2012 |
20120069790 | METHOD AND APPARATUS OF TRANSMITTING AND RECEIVING BACKHAUL DOWNLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and an apparatus of transmitting and receiving backhaul downlink control information in a wireless communication system. In the method for transmitting backhaul downlink control information from a base station in a wireless communication system according to one aspect of the present invention, the base station transmits resource allocation information to at least one terminal and at least one relay node via a relay-physical downlink control channel (hereinafter referred to as “R-PDCCH”); transmits backhaul system information to the at least one relay node and the at least one terminal via a relay physical downlink shared channel (hereinafter referred to as “R-PDSCH”) which is determined according to the resource allocation information; and changes a backhaul downlink resource block according to the backhaul system information. | 03-22-2012 |
20120069793 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION FROM RELAY NODE ON BACKHAUL UPLINK - According to one embodiment of the present invention, the method for transmitting control information from a relay node to a base station on a backhaul link comprises the steps of: determining whether one time slot of a backhaul uplink subframe from the relay node to the base station is a first type slot having transmitted symbol with guard time set or a second type slot without guard time set; diffusing the control information in a time domain using a first length sequence for the first type slot or a second length sequence for the second type slot; mapping the diffused control information on at least one slot from the first type slot or the second type slot; and transmitting the backhaul uplink subframe having more than one slot from the first type slot or the second type slot wherein the control information is mapped. | 03-22-2012 |
20120069795 | METHOD IN WHICH A RELAY ALLOCATES CARRIERS ON A BACKHAUL LINK AND AN ACCESS LINK IN A MULTI-CARRIER WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more particularly, discloses a method and apparatus in which a relay allocates carriers on a backhaul link and an access link in a multi-carrier wireless communication system. The method in which the relay allocates resources in a multi-carrier wireless communication system in accordance with one embodiment of the present invention, comprises: determining a subframe pattern allocated on a first uplink component carrier to enable a backhaul uplink transmission from the relay to a base station; determining a subframe requiring reception of an access uplink from user equipment to the relay on the first uplink component carrier in accordance with a synchronous HARQ operation; and transmitting resource allocation control information containing carrier switching indicating information to the user equipment in the event the subframe requiring reception of an access uplink is determined to be the same as the subframe allocated for backhaul uplink transmission on the first uplink component carrier. | 03-22-2012 |
20120069812 | METHOD AND APPARATUS FOR TRANSMITTING SOUNDING REFERENCE SIGNAL IN RADIO COMMUNICATION SYSTEM - Disclosed is a method for transmitting a sounding reference signal from a terminal to a base station in a radio communication system. More specifically, the method comprises the steps of: receiving downlink control information from a base station; checking a flag bit included in said downlink control information; checking an interpretation bit is included in said downlink control information, when said flag bit indicates an uplink; and transmitting an additional sounding reference signal and/or an uplink common channel based on said interpretation bit. | 03-22-2012 |
20120076037 | METHOD AND APPARATUS FOR TRANSMITTING SOUNDING REFERENCE SIGNAL IN RADIO COMMUNICATION SYSTEM - Disclosed is a method for transmitting a sounding reference signal from to a base station in a radio communication system. More specifically, the method comprises the steps of: transmitting a periodic sounding reference signal to a base station; receiving a transmission instruction for an additional sounding reference signal from the base station; multiplexing said periodic sounding reference signal and said additional sounding reference signal along a frequency axis or a time axis; and transmitting said multiplexed periodic sounding reference signal and said additional sounding reference signal to said base station. Said multiplexing step is characterized by multiplexing said periodic sounding reference signal and said additional sounding reference signal along a frequency axis or a time axis. | 03-29-2012 |
20120076039 | METHOD AND APPARATUS FOR TRANSMITTING SIGNAL USING SPATIAL SILENCING - The present invention relates to a method for transmitting signals in a heterogeneous network, the method comprising: a step wherein a base station determines a value-added vector for forming a beam pattern to be applied to a subsidiary carrier; a step wherein carrier operation information including information related to the determined value-added vector is transmitted via a primary carrier; and a step wherein the subsidiary carrier is transmitted by applying the determined value-added vector. | 03-29-2012 |
20120076102 | METHOD AND APPARATUS FOR ACQUIRING ANTENNA INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and discloses a method and apparatus for acquiring antenna information. According to the present invention, a method in which user equipment acquires information of a transmission antenna of an eNB comprises the steps of: receiving a physical broadcast channel (PBCH) including information which indicates whether or not the eNB supports an extended transmission antenna configuration; decoding the received physical broadcast channel, and checking the transmission modes of the physical broadcast channel; and acquiring information of the transmission antenna of the eNB from one or more of the transmission modes checked in the previous step and information which indicates whether or not the eNB supports an extended transmission antenna configuration. | 03-29-2012 |
20120076115 | METHOD AND APPARATUS FOR TRANSMITTING SOUNDING REFERENCE SIGNAL IN RADIO COMMUNICATION SYSTEM - Disclosed is a method for transmitting a sounding reference signal from a terminal to a base station in a radio communication system to which carrier aggregation is applied. More specifically, the method comprises the steps of: receiving information on a plurality of uplink component carriers for transmitting periodic sounding reference signals from a base station; allocating different time resources for said periodic sounding reference signal transmitted via said plurality of uplink component carriers; and transmitting said periodic sounding reference signals to said base station using said uplink component carriers and said allocated different time resources. | 03-29-2012 |
20120082124 | METHOD AND APPARATUS FOR TRANSMITTING SOUNDING REFERENCE SIGNAL - The present invention relates to a method for transmitting a sounding reference signal from a terminal in a wireless communication system, the method comprising: receiving resource operation information, which includes resource allocation information for channel sounding, from a base station; and transmitting the sounding reference signal through the entire or part of a resource region that is allocated for transmission of a demodulation reference signal on a physical uplink shared channel (PUSCH) according to the resource operation information. | 04-05-2012 |
20120093021 | CELL SEARCHING METHOD AND APPARATUS IN MULTI-CARRIER SYSTEM - Provided are a cell searching method and an apparatus in a multi-carrier system. A terminal acquires a first physical cell identity (PCI) for a first downlink component carrier, and acquires an expanded PCI for a second downlink component carrier. A first downlink reference signal through the first downlink element carrier is transmitted on the basis of the PCI, and a second downlink reference signal through the second downlink component carrier is transmitted on the basis of the expanded PCI. | 04-19-2012 |
20120093090 | METHOD AND APPARATUS FOR UPLINK TRANSMISSION IN MULTI-ANTENNA SYSTEM - Provided are a method and apparatus for uplink transmission in a multi-antenna system. A terminal transmits a plurality of first transmission symbols via a plurality of antennas using a first spatial processing performed on the first transmission symbols, and transmits a plurality of second transmission symbols via a plurality of antennas using a second spatial processing performed on the second transmission symbols. At least one column or at least one row of a first spatial processing matrix used in the first spatial processing is switched to form a second SFBC matrix used in the second spatial processing. According to the present invention, peak-to average power (PAPR)/cubic metric (CM) ratio can be kept at a low level, and imbalanced transmission power among antennas can be evened out. | 04-19-2012 |
20120093120 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNALS IN UPLINK MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) TRANSMISSION - The present invention relates to a wireless communication system, and more particularly, to a method and an apparatus for transmitting reference signals in uplink MIMO transmission. According to one embodiment of the present invention, the method for transmitting uplink signals through a terminal in the wireless communication system comprises the steps of: receiving control information including the information on a cyclic shift and/or an orthogonal cover code; allocating the multiplexed reference signals onto an uplink subframe; and transmitting the subframe through a multi-antenna. When the uplink MIMO transmission is multiuser MIMO transmission, the reference signals of the terminal and the reference signals of other terminals can be multiplexed by using the orthogonal cover code. | 04-19-2012 |
20120099518 | APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION FOR REPEATER AND METHOD THEREOF - Disclosed are an apparatus for transmitting and receiving control information for a relay node and a method thereof. The relay node for receiving control information in a wireless communication system comprises: a receiving module for receiving through higher layer signaling from a base station the information on a resource block (RB) which the relay node should search to receive the control information; a processor for detecting the control information from the first RB by blind-decoding at least one received RB which should be searched; and a receiving module for receiving through the first RB from the base station the control information detected by the processor. | 04-26-2012 |
20120099520 | SIGNAL TRANSMITTING AND RECEIVING METHOD OF REPEATER AND REPEATER USING THE SAME - The present invention relates to a method for a repeater to transmit and receive a signal on a downlink sub frame in a wireless communication system, comprising the steps of: transmitting a first physical downlink control channel (PDCCH) to terminals positioned within a repeater cell on a downlink sub frame; and receiving a second PDCCH or a physical downlink shared channel (PDSCH) from a base station after a first guard time succeeding a first PDCCH section elapses, wherein a second guard time succeeding the PDSCH or the second PDCCH received from the base station is allocated to the downlink sub frame, and the repeater receives the second PDCCH through a certain range of symbols in accordance with information on the predetermined control channel section, which is received from the base station. | 04-26-2012 |
20120099536 | APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN A WIRELESS COMMUNICATION SYSTEM AND METHOD THEREOF - An apparatus for transmitting and receiving data in a wireless communication system method thereof are disclosed. In a terminal of a wireless communication system, the present invention includes receiving a physical downlink control channel (hereinafter abbreviated PD-CCH), receiving a physical downlink shared channel ((hereinafter abbreviated PDSCH), and demodulating the PDSCH by interpreting the PDCCH according to a type of a subframe including the PDCCH and the PDSCH. | 04-26-2012 |
20120099565 | SYNCHRONIZATION ACQUISITION METHOD AND APPARATUS IN MULTI-CARRIER SYSTEM - Provided are a synchronization acquisition method and apparatus in a multi-carrier system. A terminal acquires the synchronization for a first downlink component carrier by detecting a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) in the first downlink component carrier. The terminal acquires the synchronization for a second downlink component carrier by detecting a reference signal in the second downlink component carrier. | 04-26-2012 |
20120106438 | METHOD FOR SENDING AN UPLINK CONTROL SIGNAL ON A WIRELESS COMMUNICATION SYSTEM AND A DEVICE THEREFOR - Disclosed in a method whereby a terminal sends an uplink control signal on a wireless communication system. More specifically, the present invention comprises the steps of generating an uplink control signal, allocating uplink sending resources to the uplink control signal, and sending the uplink control signal to a base station; a time resource in the uplink transmission resources is divided into sub-frame units divided into two slots; at least one of the two slots comprises one reference symbol for transmitting a reference signal; and in the slot comprising the one reference symbol, at least one of a plurality of data symbols for transmitting data signals is dropped. | 05-03-2012 |
20120106493 | APPARATUS AND METHOD FOR TRANSMITTING REFERENCE SIGNALS IN WIRELESS COMMUNICATION SYSTEM - Provided are a method and apparatus for transmitting reference signals in a wireless communication system. A first set of reference signals and a second set of reference signals are generated and mapped to a first resource block (RB) in accordance with a first reference signal pattern and a second RB which is close to the first RB in accordance with a second reference signal pattern. The first RB and the second RB are transmitted from a base station to user equipment. Each of the first reference signal pattern and the second reference signal pattern is formed of one sub-frame and on RB unit. In addition, resource elements (Rs) to which the first set of reference signals and the second set of reference signals are respectively mapped in accordance with the second reference signal pattern are REs to which the second set of reference signals and the first set of reference signals are respectively mapped in accordance with the first reference signal pattern. | 05-03-2012 |
20120113795 | METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK REFERENCE SIGNAL - The present invention relates to transmitting a downlink reference signal in a wireless communication system. A method for a base station to transmit a downlink signal by using two or more layers includes multiplexing and transmitting a reference signal for the two or more layers on the basis of a reference signal pattern on a data region of a downlink subframe and transmitting data for the two or more layers on the data region of the downlink subframe, wherein the reference signal for the two or more layers is a dedicated reference signal that is used to demodulate the data for the two or more layers on a receiving end, and in the multiplexing of the reference signal, the reference signal for the two or more layers is code-division-multiplexed by an orthogonal code having a length of at least 2. | 05-10-2012 |
20120113884 | METHOD OF ALLOCATING RESOURCE FOR RELAY - A method for wireless backhaul communication between a base station and a relay is disclosed. The base station enables a physical control channel to be set up, separately from the terminal that is used to transmit control information to each relay and the physical downlink control channel that has been set up. The base station can transmit data to the relay based on this control information. In a special embodiment, physical downlink control channel transmissions can be minimized by prescribing in advance the transmission of control information between the base station and the relay. | 05-10-2012 |
20120113939 | METHOD AND APPARATUS FOR RANDOM ACCESS IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and to an apparatus for random access in a wireless communication system to which carrier aggregation is applied. According to one aspect of the present invention, a method in which a base station supports random access of a terminal in a wireless communication system that supports carrier aggregation, comprises a step in which the base station allocates, to the terminal, a dedicated PRACH preamble for a second random access in an uplink component carrier (hereinafter, referred to as UL CC) which is additionally allocated or the configuration of which is changed after a first random access, and receives the dedicated PRACH preamble from the terminal. | 05-10-2012 |
20120113945 | METHOD AND APPARATUS FOR TRANSMITTING ACKNOWLEDGEMENT IN WIRELESS COMMUNICATION SYSTEM - Provided is a method for transmitting an acknowledgment through a base station in a multi-carrier system. The method for transmitting the acknowledgment through the base station in the multi-carrier system comprises the steps of receiving a plurality of uplink transmission blocks through at least one uplink carrier; determining a downlink channel for transmitting a plurality of ACK/NACK signals corresponding to the transmission blocks on the basis of the at least one uplink carrier; and transmitting the ACK/NACK signals on the determined downlink channel. | 05-10-2012 |
20120113948 | METHOD IN WHICH A RECEIVER TRANSMITS CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method in which a receiver transmits control information in a wireless communication system. The method comprises a step of receiving a plurality of data units from a transmitter, a step of determining acknowledgement/negative-acknowledgement (ACK/NACK) states for each of the data units; and a step of transmitting, to the transmitter, the ACK/NACK states in multiple ACK/NACK states or in a single ACK/NACK state in accordance with a predetermined condition. | 05-10-2012 |
20120113951 | Method For Transmitting/Receiving A Comp Reference Singnal - Disclosed is a method for transmitting a CoMP reference signal for accurate channel estimation. The CoMP reference signal to be transmitted to a terminal which performs a CoMP operation in a multi-cell environment is a cell-specific reference signal or a CoMP-zone-specific reference signal. A method for transmitting the cell-specific reference signal uses an ID of a CoMP set constituted by cells that perform a CoMP operation, or does not apply a frequency shift value while using the ID of a relevant cell, or uses an ID of a serving cell or a frequency shift value of the serving cell. The cell-specific reference signal is transmitted using a preset specific resource region. A method for transmitting the CoMP-zone-specific reference signal is configured such that the pattern of the sequence of CoMP reference signals varies in each of the CoMP zones, and the pattern can be set in advance. In addition, the reference signal is multiplexed and transmitted using an orthogonal code resource in the event that reference signal is transmitted to a plurality of terminals using the same CoMP zone. | 05-10-2012 |
20120120868 | APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION AND SYSTEM INFORMATION FOR REPEATERS AND METHOD THEREOF - A method of transmitting control information for a relay node (RN) from an eNode B in a wireless communication system includes transmitting information on a resource region of at least one relay-physical downlink control channel (R-PDCCH) including the control information for the RN and interleaving mode information on an interleaving mode applied to the at least one R-PDCCH to the RN, wherein the resource region of the at least one R-PDCCH is RN-specifically configured. | 05-17-2012 |
20120120905 | METHOD AND DEVICE FOR TRANSMITTING A DOWNLINK REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS - A method for a base station to transmit a channel-state-information reference signal for up to 8 antenna ports includes mapping, in accordance with a predetermined pattern, the channel-state-information reference signal for up to 8 antenna ports onto a data region of a downlink subframe having an extended cyclic prefix (CP) structure, and transmitting the downlink subframe onto which the channel-state-information reference signal for up to 8 antenna ports has been mapped; and, in the predetermined pattern, the channel-state-information reference signal for up to 8 antenna ports in mapped onto 2 OFDM symbols on the data region of the downlink subframe, with a definition for mapping onto at least one of 4 subcarrier wave positions in each of the 2 OFDM symbols, and the 4 subcarrier wave positions defined in the predetermined pattern can be disposed at 3 subcarrier wave intervals. | 05-17-2012 |
20120121028 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING A CONTROL FORMAT INDICATOR CHANNEL FOR A RELAY BACKHAUL LINK IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and an apparatus for transmitting/receiving a control format indicator channel for a relay backhaul link in a wireless communication system. According to one aspect of the present invention, a method for transmitting a control format indicator channel for a relay backhaul link in a wireless communication system is configured such that a base station generates a relay physical control format indicator channel (hereinafter, referred to as “R-PCFICH”) containing information on a relay physical downlink control channel (hereinafter, referred to as “R-PDCCH”) region, and transmits the R-PCFICH through a first OFDM symbol of the R-PDCCH region. | 05-17-2012 |
20120127945 | METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS - A method for transmitting reference signals for eight or fewer antenna ports includes mapping a portion of common reference signals (CRSs) for four or fewer antenna ports into a downlink subframe including 1 | 05-24-2012 |
20120128039 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL CHANNEL FOR RELAY BACKHAUL LINK IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and an apparatus for transmitting and receiving a control channel for a relay backhaul link in a wireless communication system. In the transmission method of a control channel for a backhaul link in a base station of a wireless communication system according to one aspect of the present invention, the base station (BS) divides and allocates a 1 | 05-24-2012 |
20120142385 | Method of transmitting a antenna control signal - An antenna switching method in a wireless access system is disclosed. A method of transmitting antenna information according to one embodiment of the present invention includes the steps of receiving an uplink request message for closed-loop antenna switching from a mobile station, transmitting a reference field including prescribed modulation and coding scheme (MCS) information to the mobile station, and transmitting a differential field including the antenna information to the mobile station. In this case, the antenna information can contain a selected antenna index. | 06-07-2012 |
20130279466 | TECHNIQUE FOR TRANSMITTING AND RECEIVING DOWNLINK REFERENCE SIGNALS - A technique for receiving and transmitting downlink reference signals is disclosed. When transmitting downlink data demodulation reference signals (DMRS) (or reference signals for downlink data demodulation) by using two or more layers, the DMRS of each layer may be multiplexed by using a code division multiplexing method and then transmitted. The DMRS for each of the two or more layers may be used for one user equipment or for two or more user equipments. And, downlink control signals for transmitting and receiving such DMRS may be configured to have the same format regardless of a single-user mode (or SU-MIMO mode) or a multi-user mode (or MU-MIMO mode), thereby being used. | 10-24-2013 |
20140155062 | Method and Apparatus for Selecting Carrier in Wireless Communication System - A method for selecting a carrier in a wireless communication system is provided. A home eNodeB (HeNB) receives a carrier information response message as a response of the carrier information request message, and selects a primary cell (PCell) of the HeNB based on the received information on carriers used by the pico eNB. The carrier information response message includes the information on carriers used by a pico eNB. | 06-05-2014 |
20140286233 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION FROM RELAY NODE ON BACKHAUL UPLINK - According to one embodiment of the present invention, the method for transmitting control information from a relay node to a base station on a backhaul link comprises the steps of: determining whether one time slot of a backhaul uplink subframe from the relay node to the base station is a first type slot having transmitted symbol with guard time set or a second type slot without guard time set; diffusing the control information in a time domain using a first length sequence for the first type slot or a second length sequence for the second type slot; mapping the diffused control information on at least one slot from the first type slot or the second type slot; and transmitting the backhaul uplink subframe having more than one slot from the first type slot or the second type slot wherein the control information is mapped. | 09-25-2014 |
20140321356 | RELAY NODE DEVICE FOR RECEIVING CONTROL INFORMATION FROM A BASE STATION AND METHOD THEREFOR - The present invention relates to a relay node device for receiving control information from a base station and a method therefor. The relay node device according to the present invention comprises: a receiver, which receives information about an area where a relay-physical downlink control channel (R-PDCCH), the channel for transmitting control information for the relay node from a base station, is allocated; a processor, which searches for at least one R-PDCCH for the relay node based on the R-PDCCH allocation information received; and an R-PDCCH receiver, which receives the at least one R-PDCCH from the fourth symbol of the first slot in a downlink backhaul subframe of the area where the at least one R-PDCCH searched for by the processor has been allocated. | 10-30-2014 |
20150078308 | METHOD FOR TRANSMITTING COMMON REFERENCE SIGNAL IN DOWNLINK MIMO SYSTEM - The present invention relates to a method for transmitting reference signals for measuring a channel in a downlink MIMO (Multi Input Multi Output) system. The method comprises the steps of: configuring, by a base station at which Nt transmit antennas are configured, Nt reference signals for channel measurement, where Nt≧1; and transmitting, by the base station, the Nt reference signals to a use equipment in subframes at a specific cycle. The specific cycle is configured to include more than one subframe. | 03-19-2015 |