Patent application number | Description | Published |
20120099545 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A wireless communication system is disclosed. Disclosed herein are methods for transmitting a physical uplink control channel (PUCCH) signal in a wireless communication system, which includes setting transmit power for the PUCCH signal, and an apparatus thereof. If the PUCCH signal is transmitted on a subframe configured for a scheduling request (SR), the PUCCH signal includes one or more hybrid automatic repeat request acknowledgement (HARQ-ACK) bits and an SR bit. When determining the transmit power for the PUCCH, the SR bit is selectively considered depending on whether or not a transport block for an uplink shared channel (UL-SCH) is present in the subframe. | 04-26-2012 |
20120106478 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN RADIO COMMUNICATION SYSTEM - A method for transmitting control information using PUCCH format 3 in a radio communication system includes detecting one or more Physical Downlink Control Channels (PDCCHs), receiving one or more Physical Downlink Shared Channel (PDSCH) signals corresponding to the one or more PDCCHs, and determining a PUCCH resource value n | 05-03-2012 |
20130058240 | PDCCH MONITORING METHOD AND APPARATUS IN A CARRIER JUNCTION SYSTEM - The present invention relates to a PDCCH monitoring method in a carrier junction system, comprising: monitoring a plurality of candidate PDCCHs in an overlapping region between a PDCCH search space of a first component carrier and a PDCCH search space of a second component carrier; and receiving downlink control information through one PDCCH out of the plurality of candidate PDCCHs, which has succeeded in decoding. The PDCCH having succeeded in decoding is a shared PDCCH that contains shared control information, a PDCCH for a self-scheduling component carrier without a carrier indicator field, or a PDCCH for a primary component carrier. | 03-07-2013 |
20130114391 | METHOD FOR TRANSMITTING AN UPLINK SIGNAL, AND APPARATUS FOR SAME - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting an uplink signal, comprising: multiplexing control information and multiple pieces of data information; and transmitting the multiplexed control information and multiple pieces of data information through a physical uplink shared channel. The number Q′ of modulation symbols for transmitting the multiplexed control information is determined by a specific mathematical expression, and selection offset â is a value which is set by a preset condition from among the offset values corresponding to the respective data information. | 05-09-2013 |
20130114477 | METHOD FOR TRANSMITTING RESPONSE INFORMATION IN A WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME - The present invention relates to a method for transmitting response information on downlink data through multiple information blocks to be bundled in a wireless system in a time division duplex (TDD) mode. The method for transmitting response information according to the present invention comprises the following steps: coding response information on the downlink data; scrambling the coded response information; and transmitting the scrambled response information to a base station, wherein, if a portion of the bits of the coded response information are information bits that indicate ACK/NACK on the downlink data, the scrambling step involves scrambling the coded response information using a specific scrambling sequence, and the specific scrambling sequence includes information on the number of information blocks to be bundled. | 05-09-2013 |
20130223396 | METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More specifically, a method for transmitting control information including ACK/NACK and a scheduling request (SR) from a terminal in a wireless communication system comprises the steps of: receiving a plurality of physical downlink shared channels (PDSCHs); and transmitting a plurality of ACK/NACK and SR corresponding to the plurality of PDSCHs by using physical uplink control channel (PUCCH) format 3, wherein the plurality of ACK/NACK are divided into first and second segments, and the SR is added to at least one of the first and second segments and is then joint coded with the plurality of ACK/NACKs of the segment to which the SR is added. | 08-29-2013 |
20130242924 | METHOD AND APPARATUS FOR PROVIDING CONTROL INFORMATION - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for a macro base station transmitting control information, comprising the following steps: transmitting to a pico base station assignment information regarding a first set of subframes with limited downlink signal transmission; transmitting to the pico base station assignment information regarding a second set of subframes which belong to a first set of subframes; and transmitting the control information by means of the first set of subframes, wherein the control information for the macro base station is transmitted from subframes in the first set of subframes which do not belong to the second set of subframes, and the control information for the pico base station is transmitted from the subframes in the first set of subframes which belong to the second set of subframes. | 09-19-2013 |
20130272259 | METHOD AND APPARATUS FOR ALLOCATING A COMPONENT CARRIER IN A CARRIER JUNCTION SYSTEM - The present invention relates to a carrier junction system. Concretely, the present invention relates to a method for allocating a component carrier in a carrier junction system, the method being characterized by comprising a step of receiving at least one item of component carrier configuration information supported by a base station, from the base station, wherein the component carrier configuration information includes at least one item of component carrier set information, and said at least one item of component carrier set information is downlink component carrier set information transmitted by a physical downlink shared channel (PDSCH), uplink component carrier set information transmitted by a physical uplink shared channel (PUSCH), or PDSCH monitoring component carrier set information transmitted by a physical downlink control channel (PDCCH). | 10-17-2013 |
20130315115 | METHOD FOR RECEIVING AND TRANSMITTING ACK/NACK INFORMATION, USER EQUIPMENT, AND BASE STATION - The present invention provides a method and an apparatus for mitigating/eliminating interference between adjacent cells by configuring a subframe subset, in which the downlink transmission/reception of a specific cell to be user equipment-specific is limited. According to the present invention, the transmission/reception of a downlink signal for a specific user equipment in the subframe in which the downlink transmission/reception of the specific cell is limited, thereby mitigating/eliminating interference from an uplink of a different cell with the downlink of the specific cell from a base station to the specific user equipment. | 11-28-2013 |
20130315185 | METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for executing a CSI report in a wireless communication system, and a device therefor, the method comprising the steps of: composing a CSI report set having a first serving cell and a second serving cell, wherein each of the serving cells includes a plurality of independently consisting subframe subsets; receiving, at the predetermined subframe, a PDCCH signal requesting an aperiodic CIS report on the CSI report set; transmitting a PUSCH signal including a first CSI on the corresponding subframe subset in the first serving cell and a second CSI on the corresponding subframe subset in the second serving cell, wherein the first CSI and the second CSI are calculated on the basis of the subframe subset given by a predetermined method. | 11-28-2013 |
20130322397 | METHOD OF TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF - A method and apparatus for transmitting control information in a wireless communication system supporting carrier aggregation (CA) is disclosed. A method for transmitting control information to a base station (BS) by a user equipment (UE) in a wireless communication system includes receiving at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) from the base station through at least one serving cell configured in the user equipment, and transmitting control information regarding PDCCH reception or PDSCH reception indicated by the PDCCH to the base station. The control information is transmitted through a physical uplink control channel (PUCCH) of a primary cell, using control information feedback timing of at least one of the primary cell and a first cell of the at least one serving cell, and the at least one serving cell uses different uplink and downlink (UL-DL) configurations. | 12-05-2013 |
20130322398 | METHOD FOR CODING AND TRANSMITTING UPLINK CONTROL INFORMATION IN A WIRELESS ACCESS SYSTEM - The present invention relates to a method for transmitting channel quality control information using two transmission blocks in a wireless access system that supports hybrid automatic retransmit request (HARQ). The method for transmitting channel quality control information according to one embodiment of the present invention comprises: a step in which a terminal receives a physical downlink control channel (PDCCH) signal including downlink control information (DCI); a step of calculating, using the DCI, the number (Q′) of encoded symbols required for transmitting channel quality control information; and a step of transmitting the channel quality control information via the physical downlink control channel (PDCCH) based on the number of encoded symbols. | 12-05-2013 |
20130329691 | METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for executing a channel state information (CSI) report in a wireless communication system, and a device therefor, the method comprising the steps of: composing a plurality of CSI information blocks corresponding to a plurality of serving cells in a first set; and transmitting, in a first subframe, a physical uplink shared channel (PUSCH) signal including the plurality of CSI information blocks, wherein, when a predetermined serving cell with limited CSI generation is included in the plurality of serving cells, the CSI information blocks corresponding to the predetermined serving cells include a specific CSI related to a second subframe, and the second subframe is a subframe having a CSI report executed before the first subframe. | 12-12-2013 |
20140003381 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM | 01-02-2014 |
20140016519 | METHOD FOR TRANSMITTING/RECEIVING DATA IN A WIRELESS ACCESS SYSTEM AND BASE STATION FOR SAME - The present invention relates to a method for transmitting/receiving data in a Time Division Duplex (TDD) wireless access system supporting multiple cells, and a base station for same. In more detail, on the basis of a multi-cell TDD uplink-downlink configuration, the method includes confirming whether a collision subframe occurs, which is caused when an uplink subframe of a first cell and a downlink subframe of a second cell exists in the same time interval; and performing cross cell scheduling on the second cell through the first cell according to a TDD uplink-downlink configuration of the first cell. When data transmission is scheduled in the collision subframe by cross cell scheduling, by changing the transmission position of an uplink or a downlink according to the cross cell scheduling, the scheduled data are transmitted in the collision subframe. | 01-16-2014 |
20140029490 | METHOD FOR TRANSMITTING/RECEIVING DATA IN WIRELESS ACCESS SYSTEM AND BASE STATION FOR SAME - In the present invention, a method for transmitting/receiving data in a wireless access system and a base station for same are disclosed. More particularly, the method comprises the following steps: setting a cell group per at least one cell having an identical uplink-downlink configuration, if a plurality of cells are set to a user equipment; performing via a first cell cross-cell scheduling with regard to a second cell, which belongs to a cell group that is different from that including the first cell, according to the uplink-downlink configuration of the first cell; confirming the occurrence of a collision subframe, in which an uplink subframe and a downlink subframe exist simultaneously in the same time interval, in two cells performing the cross-cell scheduling; and transmitting/receiving data with the user equipment when scheduled in the collision subframe due to the cross-cell scheduling, by modifying a transmission position of the uplink or the downlink according to the cross-cell scheduling. | 01-30-2014 |
20140029528 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN RADIO COMMUNICATION SYSTEM - A method for transmitting control information using PUCCH format 3 in a radio communication system includes detecting one or more Physical Downlink Control Channels (PDCCHs), receiving one or more Physical Downlink Shared Channel (PDSCH) signals corresponding to the one or more PDCCHs, and determining a PUCCH resource value n | 01-30-2014 |
20140029565 | METHOD FOR TRANSMITTING/RECEIVING DATA IN WIRELESS ACCESS SYSTEM, AND BASE STATION AND USER EQUIPMENT FOR SAME - The present invention discloses a method for transmitting/receiving data in a wireless access system supporting carrier aggregation/multiple cells, and a base station and a user equipment for same. More particularly, the method comprises the following steps: transmitting downlink control information through a physical downlink control channel (PDCCH) for scheduling downlink data from a first subframe; and transmitting the downlink data, which is scheduled by the downlink control information from a second subframe, through a physical downlink shared channel (PDSCH), wherein the downlink control information includes a field indicating the second subframe from which the downlink data is transmitted. | 01-30-2014 |
20140044083 | METHOD FOR TRANSMITTING CHANNEL STATE INFORMATION IN WIRELESS ACCESS SYSTEM AND TERMINAL THEREFOR - Disclosed is a method for transmitting channel state information (CSI) in a wireless access system supporting carrier aggregation/multiple cells and a terminal therefor. Specifically, the method comprises the steps of: if a collision occurs between starting points of periodic CSI reports for first and second cells, calculating the number of resource elements using the biggest bit size among CSI bit sizes for first and second cells; adjusting the bit of the CSI with the highest priority among the CSIs of the first and second cells to match the biggest bit size; transmitting, to the base station, the adjusted bits of the CSI with the highest priority, which have been mapped to the calculated resource element. | 02-13-2014 |
20140050130 | METHOD FOR TRANSMITTING/RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM AND BASE STATION FOR SAME - In the present invention, a method for transmitting/receiving data in a wireless communication system supporting carrier aggregation/multiple cells and a base station for same are disclosed. More particularly, the method comprises: receiving from the e Node B through a physical downlink control channel (PDCCH) of a first cell resource allocation information, which is set as a flag value indicating uplink resource allocation information, when performing cross-cell scheduling on a second cell through a first cell, according to an uplink-downlink configuration of the first cell from a plurality of cells which are set to a user equipment; determining the resource allocation information as a downlink resource allocation information, when the resource allocation information is received from a subframe perspective in which an uplink transmission time is not defined, based on the uplink-downlink configuration of the second cell; receiving the uplink resource allocation information from the e Node B via a physical downlink shared channel (PDSCH), according to the downlink resource allocation information; and transmitting to the e Node B via a physical uplink shared channel (PUSCH) of the second cell uplink data, according to the uplink resource allocation information. | 02-20-2014 |
20140050186 | METHOD AND APPARATUS FOR ADJUSTING TRANSMISSION TIMING IN WIRELESS ACCESS SYSTEM SUPPORTING CARRIER AGGREGATION - The present disclosure provides methods for allocating a timing advance (TA) value, which is used in a wireless access system supporting carrier aggregation (CA), methods for adjusting a wireless frame transmission time using the TA value, and apparatuses for supporting same. The method for adjusting the transmission timing in the wireless access system supporting carrier aggregation, according to one embodiment of the present disclosure, comprises the following steps: receiving a physical downlink control channel (PDCCH) signal including a reservation bit (for example, a service cell indicator) for indicating at least one serving cell; receiving a media access control (MAC) message including the TA value on an uplink wireless frame; and transmitting an uplink signal by applying the TA value from a serving cell indicated by the reservation bit. | 02-20-2014 |
20140071952 | METHOD FOR TRANSCEIVING DOWNLINK CONTROL INFORMATION IN A WIRELESS ACCESS SYSTEM AND APPARATUS THEREFOR - The present invention relates to a method for transceiving downlink control information in a wireless access system that supports an enhanced physical downlink control channel (e-PDCCH), and to an apparatus for the method. More particularly, the method comprises the steps of: precoding downlink control information using a precoding matrix set in a terminal; and transmitting the precoded downlink control information to the terminal via the e-PDCCH using multiple antennas, wherein the e-PDCCH is multiplexed with a PDSCH in a first slot of a subframe in which the downlink control information is transmitted. | 03-13-2014 |
20140105150 | METHOD FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME - Disclosed are a method for transmitting and receiving control information in a wireless communication system, and an apparatus for same. A method for transmitting control information by a base station in a wireless communication system according to the present invention comprises the steps of: performing a precoding process by applying different precoding matrix indices to control information for each terminal among predetermined precoding matrices; and transmitting, to each terminal, the precoded control information to which different precoding matrix indices are applied for each terminal, wherein said control information is multiplexed and transmitted via a plurality of antennas. | 04-17-2014 |
20140105158 | METHOD FOR TRANSCEIVING DATA IN WIRELESS ACCESS SYSTEM AND TERMINAL THEREFOR - The present invention relates to a method for transmitting and receiving data in a wireless access system and a terminal therefor. The method comprises the steps of: receiving an instruction message which instructs transmission of uplink resource allocation information via a physical downlink shared channel (PDSCH) from a base station; determining whether the resource allocation information is a first downlink resource allocation information based on the instruction message, upon receiving resource allocation information set to a flag value that indicates uplink resource allocation information, from the base station via a physical downlink control channel (PDCCH); receiving uplink resource allocation information via the PDSCH according to the first downlink resource allocation information from the base station; and transmitting uplink data to the base station via a physical uplink shared channel (PUSCH) according to the uplink resource allocation information. | 04-17-2014 |
20140140297 | METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM - A method for mitigating interference in a wireless communication system includes a first transmission point determining the number of subframes that need to be shifted at a second transmission point using information from the second transmission point for an ABSconfiguration, wherein the ABS configuration is for a UE belonging to a third transmission point. | 05-22-2014 |
20140140323 | METHOD AND APPARATUS FOR PERFORMING HANDOVER IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for performing a handover in a wireless communication system are disclosed. The method for performing a handover of a user equipment (UE) in a wireless communication system includes measuring a first reception power from a first transmission point and a second reception power from a second transmission point; and determining transmission of a measurement report for the handover to the second transmission point. The transmission of the measurement report is determined using the first reception power, the second reception power, an offset value, and a value related to uplink transmission power of the user equipment (UE). | 05-22-2014 |
20140161110 | METHOD AND DEVICE FOR ALLOCATING MULTI TRANSMISSION TIMING TO AT LEAST ONE TIMING ADVANCE GROUP IN A WIRELESS ACCESS SYSTEM FOR SUPPORTING CARRIER AGGREGATION - The present invention relates to methods of allocating a Timing Advance (TA) value used for at least one timing advance group in a wireless access system for supporting carrier aggregation (CA). According to one embodiment of the present invention, a method of adjusting transmission timing for at least one TA group in a wireless access system for supporting CA includes: receiving, by a terminal, a physical downlink control channel (PDCCH) signal including a reserved bit indicating at least one TA group; receiving a medium access control (MAC) message including at least one TA value corresponding to at least one TA group; and transmitting an uplink signal by applying a TA value corresponding to a TA group in the TA group that the reserved bit indicates. At this point, each of the at least one TA group may include at least one primary cell. | 06-12-2014 |
20140169276 | METHOD FOR GENERATING SEQUENCE IN WIRELESS COMMUNICATION SYSTEM - A method for generating a sequence in a wireless communication system includes generating a bit sequence from combined bits of reception acknowledgements for each of a first transport block and a second transport block according to a predetermined coding rate, mapping the bit sequence to modulation symbols to generate a block of modulation symbols, and generating a sequence of modulation symbols by applying an orthogonal sequence repeated n times to the block of modulation symbols. | 06-19-2014 |
20140169315 | METHOD FOR TRANSMITTING CONTROL INFORMATION AND APPARATUS FOR SAME - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting uplink control information, and to an apparatus for the method, wherein the method comprises the steps of: generating a plurality of HRAQ-ACKs; selecting, from among a plurality of resource indices, one first resource index, and two second resource indices, each corresponding to the plurality of HARQ-ACKs; transmitting, through a first antenna port, a first modulation symbol corresponding to the plurality of HARQ-ACKs and a first reference signal for demodulating the first modulation symbol; and transmitting, through a second antenna port, a second modulation symbol corresponding to the plurality of HARQ-ACKs and a second reference signal for demodulating the second modulation symbol. Both a transmission resource for the first modulation symbol and a transmission resource for the first reference signal are given using said one first resource index. A transmission resource for the second modulation symbol is given using one of said two second resource indices, and a transmission resource for the second reference signal is given using the other of said two second resource indices. | 06-19-2014 |
20140169361 | METHOD FOR TRANSMITTING AND RECEIVING SYNCHRONIZATION SIGNALS IN WIRELESS ACCESS SYSTEM AND APPARATUS THEREFOR - The present invention relates to a method for transmitting and receiving synchronization signals in a wireless access system for supporting carrier aggregation/multiple cells (CA) and an apparatus therefor. Specifically, the present invention includes the steps of transmitting a first synchronization signal through an extension carrier which is not operated as a single carrier but is operated as a part of the CA, wherein a transmission area of the first synchronization signal differs from a transmission area of a second synchronization signal which is transmitted through a legacy carrier capable of being operated as the single carrier. | 06-19-2014 |
20140177527 | METHOD AND DEVICE FOR INFORMATION TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system and more specifically relates to a method and device for transmitting information. A wireless communication system can support carrier aggregation (CA). In one aspect of the present invention, a method, in which a terminal transmits information to a base station in a wireless communication system, comprises the steps of: carrying out rate matching for a preset number of symbols in a subframe for transmitting first information on at least one serving cell formed in the terminal; and transmitting the first information from the subframe in which the rate matching has been carried out, to the base station. Therein, the uplink transmission timing of the one or more serving cells are different from one another, and the preset number is determined in accordance with the difference between the uplink transmission timings of the one or more serving cell. | 06-26-2014 |
20140192687 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - Disclosed are a method and apparatus for transmitting uplink control information in a wireless communication system. A method for transmitting uplink control information by a terminal in a wireless communication system may comprise the steps of: receiving, from a base station, information on a primary cell (Pcell) and at least one secondary cell (Scell) configured for said terminal; and transmitting the uplink control information through the specific Scell configured for said terminal when said Pcell and said Scell are set to different time division duplex (TDD) downlink (DL)/uplink (UL) configurations and said terminal is set to simultaneously transmit a physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH). | 07-10-2014 |
20140192729 | METHOD FOR TRANSCEIVING REFERENCE SIGNAL IN WIRELESS ACCESS SYSTEM AND TERMINAL THEREFOR - Disclosed are a method for transceiving reference signals in a wireless access system supporting carrier aggregation and a terminal therefor. Specifically, the method comprising the steps of: generating a beacon reference signal for estimating an uplink channel using an uplink reference signal; inserting the generated beacon reference signal into the last symbol of a subframe in an uplink frequency region; and transmitting the inserted beacon reference signal to a base station using a subframe that is equivalent to a demodulation reference signal. | 07-10-2014 |
20140192759 | METHOD OF INDICATING A CONTROL CHANNEL IN A WIRELESS ACCESS SYSTEM, BASE STATION FOR THE SAME AND USER EQUIPMENT FOR THE SAME - Disclosed are a method of transmitting a control channel in a wireless access system and a base station for the same. In transmitting a control channel of a 1st base station in a wireless communication system, the present invention includes receiving E-PDCCH (enhanced-physical downlink control channel) including a downlink scheduling information in a data region from a 2nd base station, assigning E-PDCCH including a downlink scheduling information of the 1st base station to the data region based on the downlink scheduling information received from the 2nd base station, and transmitting the downlink scheduling information of the 1st base station to the 2nd base station. | 07-10-2014 |
20140211753 | METHOD AND APPARATUS FOR TRANSRECEIVING SYNCHRONIZATION SIGNAL IN WIRELESS COMMUNICATION SYSTEM - One embodiment of the present invention relates to a method for a terminal acquiring synchronization in a wireless communication system, comprising the steps of: receiving a first signal from on a first carrier; receiving a second signal, which is positioned on a resource element having a predetermined pattern, from at least one subframe from subframes excluding the subframe that receives the first signal; and acquiring synchronization with respect to the first carrier by using the first signal and the second signal. | 07-31-2014 |
20140233470 | METHOD FOR RECEIVING DOWNLINK CONTROL INFORMATION IN WIRELESS ACCESS SYSTEM AND TERMINAL THEREFOR - The present invention relates to a method for receiving Downlink Control Information (DCI) in a wireless access system and a terminal therefor. More specifically, the method comprises the steps of: performing blind decoding according to the transmission mode set for a terminal in a search space assigned to the terminal; and receiving DCI through a detected Physical Downlink Control Channel (PDCCH) via blind decoding, wherein the transmission mode is set to any one of a plurality of transmission modes, which have limitations dependent on the performance of the terminal, by a base station that supports a plurality of transmission modes. | 08-21-2014 |
20140233541 | BUNDLING SCHEDULING METHOD IN WIRELESS ACCESS SYSTEM AND APPARATUS THEREFOR - The present invention relates to a bundling scheduling method in a wireless access system and an apparatus therefor. Specifically, the bundling scheduling method in the wireless access system comprises the steps of: transmitting the bundled downlink control information including a plurality of downlink control information through one physical downlink control channel (PDCCH) to a terminal; transmitting the downlink data, to the terminal, through a plurality of physical downlink shared channels (PDSCH) scheduled by the bundled downlink control information; and receiving acknowledgement/negative-acknowledgement (ACK/NACK) information for the plurality of PDSCHs from the terminal. | 08-21-2014 |
20140301336 | METHOD FOR TRANSCEIVING PREAMBLE IN WIRELESS ACCESS SYSTEM AND APPARATUS FOR SAME - Disclosed are a method for transceiving a preamble in a wireless access system that supports a carrier aggregation/multi cells, and an apparatus for the same. More particularly, the method of the present invention comprises a step of transmitting a preamble to a terminal via an extension carrier that does not operate as a single carrier but operates only as a portion of a carrier aggregation. The preamble is generated based on a pseudo-random sequence. | 10-09-2014 |
20140307696 | METHOD AND DEVICE FOR OBTAINING AND RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method of obtaining control information on a terminal in a wireless communication system according to an embodiment of the present invention includes performing blind decoding for a joint DCI format including at least two DCI formats for at least two terminals including the terminal, wherein the size of the joint DCI format is determined depending on the kind of the at least two DCI formats, and the terminal further receives information for performing blind decoding on the DCI format for the terminal in the joint DCI format. | 10-16-2014 |
20140307729 | METHOD FOR INDICATING CONTROL CHANNEL IN WIRELESS ACCESS SYSTEM, AND BASE STATION AND USER EQUIPMENT FOR THE SAME - A method for transmitting/receiving data in a wireless access system, and a base station (BS) and a user equipment (UE) for the same are disclosed. The method for performing synchronization with a neighbor base station (BS) of a user equipment (UE) in a wireless access system includes, if a user equipment (UE) based on a macro BS is located at a boundary of the neighbor BS, measuring a synchronization channel of the neighbor BS, wherein a subframe of the neighbor BS includes an additional secondary synchronization signal (SSS) so as to perform synchronization with the neighbor BS. | 10-16-2014 |
20140321408 | METHOD AND APPARATUS FOR RECEIVING DATA USING EXTENSION CARRIER IN WIRELESS ACCESS SYSTEM - Disclosed are a method and an apparatus for receiving data using an extension carrier in a wireless access system that supports a carrier aggregation/multiple cells. A method in which a terminal receives data in a wireless access system that supports a carrier aggregation according to one embodiment of the present invention comprises: a step of receiving data starting point information indicating the symbol in a subframe at which a transmission of said data starts when data is transmitted via a secondary carrier that constitutes the carrier aggregation together with a primary carrier; and a step of receiving said data via the secondary carrier based on the data starting point information. The symbol at which the transmission of said data starts is determined from any one of a plurality of symbols including a first symbol of the subframe. | 10-30-2014 |
20140321422 | METHOD AND APPARATUS FOR TRANSMITTING A SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - An embodiment of the present invention relates to a method in which a base station transmits a signal in a wireless communication system, comprising: a step of generating a reception acknowledgement response to the uplink data received from a terminal; and a step of mapping the reception acknowledgement response to a downlink time-frequency resource and transmitting the mapped result. The downlink time-frequency resource is located on a resource region excluding the control region indicated by a physical control format indicator channel, and associated with the index of the resource block with which the uplink data is transmitted. | 10-30-2014 |
20140334395 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting control information. The wireless communication system may support carrier aggregation (CA). A method for transmitting control information to a base station by a terminal in a wireless communication system according to one aspect of the present invention comprises the steps of: receiving at least one of either a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH) from said base station via at least one serving cell provided on the terminal; and transmitting, to said base station, control information on the reception of said PDCCH or on the reception of said PDSCH indicated by the PDCCH. Said at least one serving cell may use a frequency division duplex (FDD) frame structure or a time division duplex (TDD) frame structure. Said control information may be transmitted using a control information feedback timing of a first serving cell determined in accordance with a preset criterion from said at least one serving cell. | 11-13-2014 |
20140376502 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN RADIO COMMUNICATION SYSTEM - A method for transmitting control information using PUCCH format 3 in a radio communication system includes detecting one or more Physical Downlink Control Channels (PDCCHs), receiving one or more Physical Downlink Shared Channel (PDSCH) signals corresponding to the one or more PDCCHs, and determining a PUCCH resource value n | 12-25-2014 |
20150023263 | METHOD FOR REDUCING INTERFERENCE OF USER EQUIPMENT IN WIRELESS ACCESS SYSTEM, AND THE USER EQUIPMENT FOR THE SAME - A method for reducing interference of a user equipment (UE) in a wireless access system, and the user equipment (UE) for the same are disclosed. The method for reducing interference of a UE includes receiving a signal from a first base station (BS) and a second BS; and detecting a signal of the second BS from the reception signal, wherein allocation resources of the detection signal of the second BS is OFDM-symbol-level-shifted according to a physical broadcast channel (PBCH) of the first BS in such a manner that a control region does not overlap with another part. | 01-22-2015 |
20150043406 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNALS IN WIRELESS COMMUNICATION SYSTEM - In a method for a transmission point to transmit a downlink signal to a user equipment in a wireless communication system, the method includes determining transmission power of first resource elements for data transmission of an OFDM symbol which does not include a Cell specific Reference Signal (CRS) and transmission power of second resource elements for data transmission of an OFDM symbol which includes the CRS, wherein a first parameter related to the determination of the transmission power of the first resource elements and a second parameter related to the determination of the transmission power of the second resource elements are determined by one of a first configuration and a second configuration, and wherein the first configuration and the second configuration are selectively applied according to one or more of a subframe and a transmission mode. | 02-12-2015 |
20150043496 | PDCCH MONITORING METHOD AND APPARATUS IN A CARRIER JUNCTION SYSTEM - A method is described for receiving a downlink control information (DCI) from a base station (BS) by a user equipment (UE) in a wireless communication system. The method includes monitoring a plurality of physical downlink control channel (PDCCH) candidates having the same payload size in a common search space and a UE-specific search space on a primary cell to receive the DCI. The common search space and the UE-specific search space are overlapped. If the UE is configured with a carrier indicator field (CIF), the method further includes determining that only a PDCCH in the common search space is transmitted from among the plurality of PDCCH candidates. | 02-12-2015 |
20150049824 | METHOD FOR PERFORMING HIERARCHICAL BEAMFORMING IN WIRELESS ACCESS SYSTEM AND DEVICE THEREFOR - A method for performing hierarchical beamforming in a wireless access system and a device therefor are disclosed. Particularly, the method comprises: an initial step for allowing a base station to transmit a plurality of first beams, to which different steering vectors are applied, to a terminal through corresponding reference signals, and a repetition step for allowing the base station to transmit a plurality of second beams, to which different steering vectors are applied, to the terminal through corresponding reference signals by considering feedback information that contains an index of one or more beams received from the terminal, wherein the repetition step can be repeated up to a predetermined number of times. | 02-19-2015 |
20150078304 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN RADIO COMMUNICATION SYSTEM - A method for transmitting control information using PUCCH format 3 in a radio communication system includes detecting one or more Physical Downlink Control Channels (PDCCHs), receiving one or more Physical Downlink Shared Channel (PDSCH) signals corresponding to the one or more PDCCHs, and determining a PUCCH resource value n | 03-19-2015 |
20150092875 | METHOD FOR DOWNLINK BEAMFORMING IN WIRELESS ACCESS SYSTEM AND DEVICE THEREFOR - A method for downlink beamforming in a wireless access system and a device therefor are disclosed. Specifically, the method comprises the following steps: transmitting, by an eNB, a reference signal to a UE through only a first antenna set from among whole antennas; receiving, by the eNB, channel state information (CSI) for the first antenna set from the UE; and transmitting, by the eNB, beamforming a downlink channel by using a precoding matrix for the whole antennas, wherein CSI for a second antenna set by which the reference signal has not been transmitted from among the whole antennas is calculated using the CSI for the first antenna set. | 04-02-2015 |
20150139174 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A wireless communication system is disclosed. Disclosed herein are methods for transmitting a physical uplink control channel (PUCCH) signal in a wireless communication system, which includes setting transmit power for the PUCCH signal, and an apparatus thereof. If the PUCCH signal is transmitted on a subframe configured for a scheduling request (SR), the PUCCH signal includes one or more hybrid automatic repeat request acknowledgement (HARQ-ACK) bits and an SR bit. When determining the transmit power for the PUCCH, the SR bit is selectively considered depending on whether or not a transport block for an uplink shared channel (UL-SCH) is present in the subframe. | 05-21-2015 |
20150180628 | METHOD FOR TRANSMITTING REFERENCE SIGNAL TO ANTENNA PORT IN WIRELESS ACCESS SYSTEM - The present invention provides various methods for transmitting a channel state information reference signal (CSI-RS) by varying a transmission period for each antenna port or antenna port group, and also provides apparatuses supporting the methods. The method for receiving a CSI-RS in a wireless access system according to one aspect of the present invention may comprise the steps of: receiving a CSI-RS component information element for setting CSI-RS transmission periods for two or more antenna ports to be mutually different; receiving CSI-RSs for each of the two or more antenna ports based on the CSI-RS component information element; and acquiring channel state information for each of the two or more antenna ports based on the received CSI-RS. | 06-25-2015 |
20150207547 | METHOD AND APPARATUS FOR TRANSMITTING CODEBOOK-BASED SIGNAL IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for transmitting a codebook-based signal. A method for transmitting channel state information from a terminal in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: measuring a downlink channel from a downlink signal that is received from a base station; determining a first precoding matrix indicator (PMI) and a second PMI of the downlink channel based on the measurement of the downlink channel; and transmitting the first PMI and the second PMI to the base station, wherein the first PMI indicates a first precoding vector that includes a first elevation angle component of a multi-antenna of the base station, the second PMI indicates a second precoding vector that includes a second elevation angle component and an azimuth angle component of the multi-antenna of the base station, and wherein resolution of the azimuth angle component can be determined based on the first elevation angle component or the second elevation angle component. | 07-23-2015 |
20150207555 | METHOD AND DEVICE FOR FEEDING BACK CHANNEL INFORMATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTI-INPUT MULTI-OUTPUT SCHEME - The present invention relates to a wireless communication system and, more particularly, to a method and device for compressing and feeding back channel information in a wireless communication system supporting a multi-input multi-output (MIMO) scheme. A method for feeding back channel information by a terminal in a wireless communication system supporting a MINO scheme, according to one embodiment of the present invention, can comprise the steps of: calculating a channel matrix on the basis of a reference signal received from a base station; calculating a first valid channel vector by using a reception weight vector and the channel matrix; and calculating a second valid channel vector by setting a coefficient corresponding to each basis vector included in a basis matrix as 0 if the coefficient is equal to or less than a threshold when the first valid channel vector is factored by the basis matrix. | 07-23-2015 |
20150236762 | METHOD AND APPARATUS FOR TRANSMITTING CODEBOOK-BASED SIGNAL IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for transmitting a codebook-based signal. A method for transmitting channel state information from a terminal in the wireless communication system, according to one embodiment of the present invention, comprises the steps of measuring a downlink channel from a downlink signal that is received from a base station; determining a first precoding matrix indicator (PMI) and a second PMI of the downlink channel based on the measurement of the downlink channel; and transmitting the first PMI and the second PMI to the base station, wherein the first PMI indicates a first precoding vector that includes a first elevation angle component of a multi-antenna of the base station, the second PMI indicates a second precoding vector that includes a second elevation angle component and an azimuth angle component of the multi-antenna of the base station, and wherein the second elevation angle component can be determined based on the value of the first elevation angle component. | 08-20-2015 |
20150249526 | METHOD FOR TRANSCEIVING A REFERENCE SIGNAL IN A WIRELESS CONNECTION SYSTEM AND TERMINAL THEREFOR - Disclosed are a method for transceiving a reference signal in a wireless connection system and a terminal therefor. More particularly, the method comprises the steps of: generating a plurality of uplink reference signal sequences; mapping the generated plurality of uplink reference signal sequences to each of three symbols in one frame; and transmitting the mapped uplink reference signals to a base station. The plurality of uplink reference signal sequences is generated by applying an orthogonal cover code having a length of 3. | 09-03-2015 |
20150264683 | METHOD FOR CONFIGURING WIRELESS FRAME OF USER EQUIPMENT AND USER EQUIPMENT, AND METHOD FOR CONFIGURING WIRELESS FRAME OF BASE STATION AND BASE STATION - Flexible employment of frame configuration in light of the Doppler frequency change is proposed. According to the present invention, frame configuration for a predetermined frequency band may be changed. Changing frame configuration in the present invention may include changing the number (≧0) of zero-power subcarriers which alternate with nonzero-power subcarriers. | 09-17-2015 |
20150282178 | METHOD FOR CONFIGURING WIRELESS FRAME OF USER EQUIPMENT, USER EQUIPMENT, METHOD FOR CONFIGURING WIRELESS FRAME OF BASE STATION, AND BASE STATION - Flexible employment of frame configuration in light of the Doppler frequency change is proposed. According to the present invention, frame configuration for a predetermined frequency band may be changed. Changing frame configuration in the present invention may include changing subcarrier spacing. | 10-01-2015 |
20150288425 | METHOD AND APPARATUS FOR RELIEVING DOPPLER BROADENING IN WIRELESS ACCESS SYSTEM THAT SUPPORTS SUPER HIGH FREQUENCY BAND - The present invention provides methods for relieving effective Doppler broadening in performing pin-point beamforming and provides apparatuses for supporting the methods, wherein the methods and the apparatuses are used in a wireless access system that supports a super high frequency band. The method for relieving Doppler broadening in a wireless access system that supports a super high frequency band according to one embodiment of the present invention may comprise the steps of: receiving a downlink signal at a receiving end; estimating a Doppler spectrum for the downlink signal received at the receiving end; and calculating a carrier wave shift value based on the Doppler spectrum estimated at the receiving end. | 10-08-2015 |
20150289219 | SYNCHRONIZING SIGNAL RECEIVING METHOD AND USER EQUIPMENT, AND SYNCHRONIZING SIGNAL TRANSMITTING METHOD AND BASE STATION - The present invention defines multiple synchronizing signal resource candidates from/in which a synchronizing signal can be transmitted or detected. The base station according to the present invention transmits a synchronizing signal from a synchronizing signal resource, which corresponds to at least the cell identifier of a cell which is associated with the synchronizing signal, the time synchronization of the cell, the length of a cyclic prefix which is applied to the cell, or the type of the base station, among the multiple synchronizing signal resource candidates. The user equipment according to the present invention can obtain information on at least the cell identifier, the time synchronization with the cell, the length of the cyclic prefix, or the type of the base station, on the basis of the synchronizing signal resource in which the synchronizing signal has been detected. | 10-08-2015 |
20150289220 | METHOD AND APPARATUS FOR GENERATING SYNCHRONOUS SIGNAL IN WIRELESS ACCESS SYSTEM FOR SUPPORTING SUPER-HIGH FREQUENCY BAND - The present invention relates to a method for newly defining a synchronous signal used in a super-high frequency band and acquiring downlink synchronization by using the synchronous signal, and an apparatus for supporting the same. The method for enabling a base station to transmit the synchronous signal in the wireless access system supporting the super-high frequency band, as one embodiment of the present invention, comprises the steps of: generating a general synchronous signal which do not have repetitive characteristics; generating a repetitive synchronous signal on the basis of a repetition factor for estimating a carrier frequency offset of the super-high frequency band; transmitting the general synchronous signal from a first frame; and transmitting the repetitive synchronous signal from a second frame. At this time, the repetition factor indicates the repetitive characteristic of the repetitive synchronous signal. | 10-08-2015 |
20150304083 | METHOD FOR CHANGING PATTERN OF REFERENCE SIGNALS ACCORDING TO RANK VARIATION IN WIRELESS COMMUNICATION SYSTEM, AND AN APPARATUS THEREFOR - A method for transmitting a reference signal to a user equipment at a base station in a wireless communication system is disclosed. The method includes transmitting the reference signal to the user equipment according to a first pattern corresponding to a first rank and, if a rank is changed from the first rank to a second rank, transmitting the reference signal to the user equipment according to a second pattern corresponding to the second rank, wherein, if the second rank is greater than the first rank, the second pattern includes the first pattern. Preferably, the first pattern is a reference signal pattern for a single rank and the second pattern is defined as a hierarchical structure in which one or more reference signal symbols are added to the first pattern in a time domain direction. | 10-22-2015 |
20150304090 | METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING SIGNAL IN MULTI-CELL COOPERATIVE COMMUNICATION SYSTEM - The present invention relates to a method of transmitting and receiving a signal in a wireless communication system. In particular, in a time division multi-cell cooperative communication system, a base station may receive a reference signal, estimate a channel of each user terminal based on the reference signal, and determine a transmission and reception filter based on estimated channel information. The base station and a cooperative base station that cooperates with the base station may mutually exchange the reference signal and average signal power information on a terminal and determine the transmission and reception filter based on exchanged information. | 10-22-2015 |
20150326269 | METHOD FOR TRANSCEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR - The present invention relates to a method for transceiving a signal in a wireless communication system. A method for transceiving a signal in a wireless communication system according to one embodiment of the present invention comprises the steps of: deducing a channel from a transmission antenna of a transceiver; generating a reference signal by combining the deduced channel and a transmission signal from the transmission antenna; converting the reference signal into an analog signal; receiving a data signal and a self-interference signal by means of a reception antenna of the transceiver; and canceling the self-interference signal from the received data signal by means of the converted reference signal, wherein deducing a channel and combining signals are performed in the digital domain and discarding the self-interference signal is performed in the analog domain. | 11-12-2015 |
20150333844 | METHOD FOR TRANSMITTING AND RECEIVING DATA ON THE BASIS OF ADAPTIVE BLIND INTERFERENCE ALIGNMENT - The present invention provides adaptive blind interference alignment (BIA) methods capable of controlling interference between users without channel information, and devices for supporting the same. A method for transmitting a signal according to the adaptive BIA method in a wireless access system, as one embodiment of the present invention comprises the steps of enabling a transmitter to constitute a first block including preferred signals and interference signals on the basis of the number of receivers within a cell and the number of reception modes of the receiver; enabling the transmitter to constitute a second block including one kind of signal from the preferred signals or the interference signals; enabling the transmitter to constitute alignment blocks for each receiver by combining the first block with the second block; and enabling the transmitter to transmit the alignment blocks to the receivers according to transmission symbol patterns corresponding to the alignment blocks. | 11-19-2015 |
20150341152 | METHOD FOR TRANSCEIVING CHANNEL STATE INFORMATION IN WIRELESS ACCESS SYSTEM, AND APPARATUS FOR SUPPORTING SAME - The present invention relates to a wireless access system that supports massive MIMO, and provides a method for transceiving channel state information (CSI) for operating the massive MIMO and an apparatus for supporting said method. The method for transmitting CSI by a terminal in a wireless access system that supports massive multi-input multi-output (MIMO), according to one embodiment of the present invention, may comprise the steps of: receiving a signal including report period information; receiving downlink data including a reference signal; measuring first CSI using the reference signal; acquiring second CSI using the first CSI; and reporting the first CSI or the second CSI to a base station based on the report period information. According to the present invention, the first CSI may be information on a first antenna set including antennas for transmitting the reference signal, and the second CSI may be information on a second antenna set including antennas not transmitting the reference signal. | 11-26-2015 |
20150381252 | METHOD OF REPORTING CHANNEL STATE INFORMATION FOR VERTICAL BEAMFORMING IN A MULTICELL BASED WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - A method of reporting a channel state from a user equipment in a wireless communication system and apparatus therefor are disclosed. The present invention includes receiving information on vertical beamforming angles of a serving node and a cooperation node from the serving node, generating the channel state information for a cooperative transmission mode using the information on the vertical beamforming angle, and reporting the channel state information to the serving node. | 12-31-2015 |
Patent application number | Description | Published |
20150280887 | METHOD FOR TRANSCEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR - The present invention relates to a method for transceiving a signal in a wireless communication system. A method for transceiving a signal in a wireless communication system according to one embodiment of the present invention comprises the steps of: transmitting a downlink signal from a base station to a terminal; receiving an uplink signal transmitted from the terminal; and cancelling a self-interference signal on the basis of the transceived downlink signal or the uplink signal, wherein the transmission periods for the downlink signal and the uplink signal comprise dedicated transmission periods, and in the dedicated transmission period, signal transmission periods of the base station and the terminal are differentiated. | 10-01-2015 |
20150311985 | METHOD AND APPARATUS FOR CANCELLING SELF-INTERFERENCE SIGNAL BETWEEN TRANSMISSION ANTENNA AND RECEPTION ANTENNA - An apparatus for cancelling a self-interference signal between a transmission antenna and a reception antenna is disclosed. The apparatus includes a first self-interference signal cancellation unit for cancelling a self-interference signal in consideration of a linear channel between the transmission antenna and the reception antenna, a second self-interference signal cancellation unit for cancelling a self-interference signal in consideration of nonlinear channel characteristic between the transmission antenna and the reception antenna or linear characteristic of a radio channel, and a controller for comparing a transmitted signal output from the transmission antenna and a received signal received by the reception antenna to provide a first coefficient to be applied to self-interference signal cancellation of a linear device in the first self-interference signal cancellation unit and a second coefficient to be applied to self-interference signal cancellation of a nonlinear device in the second self-interference signal cancellation unit. | 10-29-2015 |
20150358102 | METHOD FOR TRANSMITTING AND RECEIVING SIGNAL IN MULTI-CELL COOPERATIVE COMMUNICATION SYSTEM AND APPARATUS THEREFOR - The present invention relates to a method for transmitting and receiving signals in a wireless communication system. Specifically, in a multi-cell cooperative communication system, a base station can form cooperative detection user set information by detecting a terminal within a cell and form cooperative processing user set by receiving the cooperative detection user set information of a neighboring base station. At this time, the base station acquires information about a base station adjacent to the neighboring base station and designs an efficient filter in transmitting and receiving signals of terminals between the base stations, thereby being capable of removing inter-cell interference signals. | 12-10-2015 |
20150365978 | METHOD AND APPARATUS FOR CONFIGURING RANDOM ACCESS SEQUENCE LENGTH FOR HIGH CARRIER FREQUENCY BAND IN WIRELESS COMMUNICATION SYSTEM - A method of receiving a random access sequence by a base station in a wireless communication system is disclosed. The method includes transmitting information on at least one of random access formats for different effective channel lengths to the user equipment from a base station, and transmitting a random access sequence based on the at least one random access format from the base station, wherein the random access formats have different lengths of effective channel section for receiving the random access sequence. | 12-17-2015 |
20150372737 | METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK DATA ON BASIS OF BEAM RESTRICTED SUB-FRAME - The method comprises: a step in which the base station transmits to a terminal configuration information related to the beam restricted sub-frame; and a step in which the base station transmits downlink data to the terminal via a sub-frame. The sub-frame includes the beam restricted sub-frame and a normal sub-frame, setting information includes information indicating a sub-frame set as the beam restricted sub-frame among multiple sub-frames, the beam restricted sub-frame is a sub-frame transmitted only based on a first beam subset, the normal sub-frame is a sub-frame transmitted based on the first beam subset and a second beam subset, the first beam subset is the set of beams generated based on a first precoding matrix set, and the second beam subset is the set of beams generated based on a second precoding matrix set including the first precoding matrix set. | 12-24-2015 |
20150373656 | METHOD FOR OBTAINING SYNCHRONIZATION BETWEEN DEVICES IN WIRELESS ACCESS SYSTEM SUPPORTING DEVICE-TO-DEVICE COMMUNICATION, AND DEVICE SUPPORTING SAME - The present invention, which is used in a wireless access system supporting device-to-device (D2D) communication, defines a new random access channel region and provides methods for obtaining synchronization between D2D devices in the new random access channel region, and devices supporting same. The method for obtaining synchronization between devices in a wireless access system supporting device-to-device (D2D) communication, according to one embodiment of the present invention, may comprise: a step in which a first terminal receives a D2D preamble from a second terminal via a D2D random access channel (RACH) region in an RACH region; a step in which the first terminal obtains synchronization with the second terminal by using the D2D preamble; and a step in which the first terminal performs D2D communication with the second terminal. The RACH region may comprise a legacy RACH region to which a legacy preamble for performing an RACH procedure with a base station is transmitted, and the D2D RACH region. | 12-24-2015 |
20160007334 | METHOD FOR ALLOTTING SYSTEM BANDWIDTH IN WIRELESS ACCESS SYSTEM SUPPORTING MACHINE-TYPE COMMUNICATION AND APPARATUS FOR SUPPORTING SAME - The present invention is used for a wireless access system supporting a machine type communication (MTC), and provides a method for allotting a new system bandwidth for MTC and an apparatus for supporting the same. According to an embodiment of the present invention, a method for allotting a system bandwidth for an MTC terminal in a wireless access system supporting a machine type communication (MTC) includes the steps of: causing an MTC terminal to receive an upper layer signal containing the system bandwidth indication information representing an MTC system bandwidth allotted to the MTC terminal; and causing the MTC terminal to transmit uplink control information through the MTC system bandwidth represented by the system bandwidth indication information. In this case, the MTC system bandwidth can be constructed by connecting to a legacy system bandwidth in the direction of the frequency axis. | 01-07-2016 |
20160029179 | METHOD FOR ALLOCATING BROADCAST CHANNEL, METHOD FOR TRANSMITTING AND RECEIVING BROADCAST CHANNEL SIGNAL, AND DEVICE FOR SUPPORTING SAME - Disclosed are a novel method for allocating a broadcast channel and a novel method for transmitting and receiving a broadcast channel signal in a wireless access system, and devices for supporting the same. The method for receiving a broadcast signal in a wireless access system, according to one embodiment of the present invention, comprises the steps of: periodically receiving one or more broadcast signals during a preset transmission time interval; obtaining a transmission position and a transmission pattern for the one or more broadcast signals in a transmission time interval; and obtaining system information included in the broadcast signals on the basis the transmission position and/or the transmission pattern. | 01-28-2016 |
20160036569 | METHOD AND APPARATUS FOR DATA TRANSMISSION ON CONTROL CHANNELS FROM BASE STATION TO USER EQUIPMENTS IN WIRELESS COMMUNICATION SYSTEM - A method for data transmission on control channels from a Base Station (BS) to a User Equipment (UE) in a wireless communication system is disclosed. The method includes multiplexing a common control channel and a UE-specific control channel for the UE using at least one of time division multiplexing and frequency division multiplexing; and performing data transmission on the multiplexed common control channel and the UE-specific control channel to the UE. The UE-specific control channel is multiplexed with one or more UE-specific control channels for other UEs using at least one of time division multiplexing, frequency division multiplexing, spatial multiplexing, and code division multiplexing. | 02-04-2016 |
20160050003 | METHOD AND APPARATUS FOR REPORTING CHANNEL STATUS INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system and, more specifically, to a method and an apparatus for reporting channel status information (CSI). Particularly, the method by which a terminal in the wireless communication system reports the CSI, comprises the steps of: receiving a reference signal from a base station; and reporting, to the base station, the CSI generated by using the reference signal, wherein the CSI includes channel information for a plurality of antenna ports mapped according to a first parameter, and the first parameter is a value related to vertical domain antenna ports indicated through upper layer signaling. | 02-18-2016 |
20160081091 | METHOD FOR ALLOCATING RESOURCE FOR DEVICE FOR WIRELESS COMMUNICATION AND BASE STATION FOR SAME - A method of allocating a resource for user equipments in a base station in a full duplex radio (FDR) communication environment is disclosed. The method includes determining an FDR frequency band for performing FDR communication with a plurality of user equipments, selecting a first user equipment and a second user equipment among the plurality of user equipments, a correlation between the first and second user equipments being less than a threshold value, and allocating a first section as a downlink frequency resource for the first user equipment and an uplink frequency resource for the second user equipment, and allocating a second section as an uplink frequency resource for the first user equipment and a downlink frequency resource for the second user equipment, the first section and the second section being parts of the FDR frequency band. | 03-17-2016 |
20160087715 | STRUCTURE OF FULL DUPLEX RADIO REGION APPLIED IN RADIO ACCESS SYSTEM SUPPORTING FULL DUPLEX RADIO SCHEME, AND METHOD AND APPARATUS FOR ALLOCATING SAME - The present invention relates to a structure of a full duplex radio (FDR) region in an FDR system. Further, the present invention provides a method and apparatuses for transmitting allocation information on a configured FDR region. In an embodiment of the present invention, a method of allocating an FDR region by a base station in a radio access system supporting an FDR scheme comprises the steps of: transmitting a control signal including FDR region allocation information to a terminal and performing FDR-based communication with the terminal through an FDR region indicated by the FDR region allocation information. At this time, the FDR region allocation information may contain one or more of first number information indicating a number of subcarriers included in the FDR region, position information indicating an allocation position of the FDR region, and second number information indicating a number of subcarriers included in a guard region used for reducing interference. | 03-24-2016 |
20160099802 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING SIGNAL IN WIRELESS ACCESS SYSTEM WHICH SUPPORTS FDR TRANSMISSION - The present invention relates a wireless access system which supports a full duplex radio (FDR) transmission environment. A method for receiving a signal from a base station by a terminal in the wireless access system which supports FDR transmission according to an embodiment of the present invention comprises the steps of: receiving, from the base station, reference signal mode information indicating resources by which a reference signal is transmitted, from among reference signal available resources by which the reference signal can be transmitted; receiving, from the base station, additional resource mode information indicating additional data resources by which a terminal can simultaneously transmit data, from among the resources by which the reference signal is transmitted; and transmitting the data using the additional resource mode information simultaneously while receiving the reference signal using the reference signal mode information. | 04-07-2016 |
20160100374 | METHOD FOR TRANSMITTING INFORMATION FOR SYNCHRONIZATION OF USER EQUIPMENT BY BASE STATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR SAME - The present invention relates to a method for transmitting information for synchronization of a user equipment by a base station in a wireless communication system and apparatus for the same. In one embodiment of the present invention, a source base station transmits a request message requesting uplink synchronization information according to a predetermined reference to a target base station, receives a response message including the synchronization information from the target base station in response to the requested message, and transmits the received synchronization information to one or more user equipments which are to move to a cell serviced by the target base station. The synchronization information is used when the user equipments move to the cell serviced by the target base station without a process of acquiring the synchronization information. | 04-07-2016 |
20160105211 | METHOD AND APPARATUS FOR RECONSTRUCTING DESIRED SIGNAL IN CASE OF USING FULL DUPLEX RADIO (FDR) SCHEME - The apparatus for reconstructing a desired signal using a full duplex radio (FDR) scheme includes: a digital self-interference cancellation unit configured to output a first digital signal; a demodulator configured to demodulate the first digital signal; a modulator configured to modulate the demodulated first digital signal; an attenuator configured to attenuate the modulated first digital signal by applying an attenuation coefficient to the modulated first digital signal; and an operation unit configured to receive the attenuated first digital signal and the first digital signal, and transmit a residual signal to the digital self-interference cancellation unit, wherein the residual signal is obtained by subtracting the attenuated first digital signal from the first digital signal. | 04-14-2016 |