Patent application number | Description | Published |
20150146692 | METHOD AND APPARATUS FOR CELL SWITCHING - Disclosed are a method and an apparatus for transmitting data. A cell switching method can comprise the steps of: allowing a primary (P)-cell base station to enable a first secondary(S)-cell; allowing the P-cell base station to receive channel state information from a second S-cell; allowing the P-cell base station to determine the second S-cell as a switching S-cell on the basis of the channel state information; allowing the P-cell base station to disable the first S-cell and enable the second S-cell. | 05-28-2015 |
20150156763 | METHOD AND DEVICE FOR ALLOCATING RESOURCE FOR UPLINK CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM - Provided are a method and a device for allocating a resource for an uplink control channel in a wireless communication system. The method for allocating a resource for an uplink control channel in a wireless communication system comprises: receiving at least one downlink subframe; and allocating a physical uplink control channel (PUCCH) resource for transmitting an acknowledgement/not-acknowledgement (ACK/NACK) for the at least one downlink subframe, wherein the PUCCH resource is allocated on the basis of a control channel element of a control channel for scheduling each of the at least one downlink subframe, and if a particular subframe that satisfies a particular condition is included in the at least one downlink subframe, a control channel element included in the special subframe is excluded from the control channel element used to allocate the PUCCH resource. | 06-04-2015 |
20150181543 | METHOD AND TERMINAL FOR SYNCHRONIZING DOWNLINK - One disclosure of the present invention suggests a method for synchronizing a downlink. The method for synchronizing downlinks comprises the steps of: receiving from at least one cell, which belongs to a random group, a synchronization signal; synchronizing the downlink in accordance with the synchronization signal; and using the downlink synchronization, which is performed on the at least one cell, to synchronize the downlink with a target cell, when the target cell that belongs to the random group is converted from an off state to an on state, wherein the random group comprises geographically adjacent cells, and wherein the cells that are comprised in the random group can have mutually different cell IDs, but a portion of the synchronization signals can be identical. | 06-25-2015 |
20150195069 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA - The prevent invention relates to a method and apparatus for transmitting and receiving data. The method for receiving control data by a terminal can include the steps of: a terminal receiving redundant information on a first control channel from a base station; the terminal receiving a first subframe from the base station and first blind decoding being performed on the first subframe in order to monitor the first control channel; the terminal receiving a second subframe from the base station and second blind decoding being performed on the second subframe on the basis of the redundant information and the first blind decoding information in order to monitor a second control channel. | 07-09-2015 |
20150195070 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA - Disclosed are a method and an apparatus for transmitting and receiving data. A method for transmitting an uplink comprises the steps of: a terminal receiving periodic channel state information (CSI) configuration information; the terminal determining an uplink subframe according to the periodic CSI configuration information; and the terminal transmitting a periodic CSI through the uplink subframe, wherein the periodic CSI configuration information may include information regarding a period, subframe offset, and a reference cell to which a wireless frame number is applied. | 07-09-2015 |
20150195072 | METHOD AND APPARATUS FOR TRANSMITTING RECEPTION CONFIRMATION IN WIRELESS COMMUNICATION SYSTEM - Provided are a method and an apparatus for transmitting acknowledgement/not-acknowledgement (ACK/NACK) in a wireless communication system. The method comprises: receiving at least two downlink subframes among a plurality of downlink subframes; and transmitting, from an uplink subframe, the ACK/NACKs of the at least two downlink subframes, wherein at least two semi-persistent scheduling (SPS) data channels can be assigned to the plurality of the downlink subframes. | 07-09-2015 |
20150200761 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA - Disclosed are a method and an apparatus for transmitting and receiving data. A method for transmitting an uplink comprises the steps of: a terminal determining the size of an ACK/NACK payload according to a transmission mode of a first serving cell and a transmission mode of a second serving cell; the terminal establishing a transmission power for transmitting the ACK/NACK payload based on the size of the ACK/NACK payload; and the terminal transmitting the ACK/NACK payload through a physical uplink control channel (PUCCH) based on the transmission power. | 07-16-2015 |
20150200762 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA - Disclosed are a method and an apparatus for transmitting and receiving data. A method for transmitting an uplink comprises the steps of: a terminal receiving first downlink data from a first cell through a first subframe; the terminal receiving second downlink data from a second cell through the first subframe; the terminal transmitting first uplink data, which is generated based on a first identifier of the first cell, as a reply to the first downlink data through a second subframe, and the terminal transmitting second uplink data, which is generated based on a second identifier of a second cell, as a reply to the second downlink data through the second subframe. | 07-16-2015 |
20150208358 | METHOD AND APPARATUS FOR SETTING UPLINK TRANSMISSION POWER IN WIRELESS COMMUNICATION SYSTEM - Provided are a method and a terminal device for setting uplink transmission power in a wireless communication system. A terminal acquires information on the time alignment group (TAG) for multiple supportable serving cells so as to constitute TAGs, checks whether an overlap section of subframe n and subframe n+1 for uplink transmission exists between TAGs, and sets uplink transmission power so as to scale the uplink transmission power (P | 07-23-2015 |
20150215095 | METHOD AND APPARATUS FOR TRANSMITTING SOUNDING REFERENCE SIGNAL - A method for transmitting a sounding reference signal (SRS) in a wireless communication system is provided. A user equipment receives downlink control information from a first serving cell and transmits a SRS through a second serving cell. If the first serving cell is a FDD cell and the second serving cell is a TDD cell, the downlink control information includes an aperiodic SRS request. If the first serving cell is the TDD cell and the second serving cell is the FDD cell, the downlink control information does not include the aperiodic SRS request. | 07-30-2015 |
20150215097 | METHOD AND APPARATUS FOR SUPPORTING BURST TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - A method for and apparatus for supporting burst transmission in a wireless communication system supporting multiple carriers is provided. A wireless device receives a PDCCH for the burst transmission via a first serving cell and transmits a response of the PDCCH via the first serving cell. And then, the wireless device receives PDSCHs for the burst transmission via a second serving cell and transmits a response of the PDSCHs via the first serving cell. | 07-30-2015 |
20150215877 | APPARATUS AND METHOD FOR REPORTING POWER HEADROOM IN WIRELESS COMMUNICATION SYSTEM - Provided are an apparatus and a method for reporting a power headroom in a wireless communication system. A terminal may check the configuration of a plurality of subframes for multiple serving cells, determine at least one power headroom (PH) in correspondence to at least one subframe corresponding to the subframe for which an uplink configuration is established, from among the plurality of subframes, and perform a power headroom report (PHR) including said at least one PH. | 07-30-2015 |
20150223234 | METHOD AND DEVICE FOR CONTROLLING TRANSMISSION POWER FOR UPLINK CONTROL CHANNEL IN CARRIER AGGREGATION SYSTEM - Provided are a method of controlling transmission power for an uplink control channel for a terminal to which a plurality of cells are assigned, and a device using the method. The method receives a first set of parameters and a second set of parameters that are used for determining transmission power for the uplink control channel and determines the transmission power for the uplink control channel by using the first set of parameters or the second set of parameters, wherein the first set of parameters or the second set of parameters is used according to one of the cells to which the uplink control channel is transmitted. | 08-06-2015 |
20150245323 | METHOD AND USER EQUIPMENT FOR RECEIVING DOWNLINK SIGNAL AND METHOD AND BASE STATION FOR TRANSMITTING DOWNLINK SIGNAL - The present invention provides: a base station for repeatedly transmitting a physical downlink control channel (PDCCH) during a first subframe bundle comprising a plurality of subframes, and transmitting a PDSCH related to the PDCCH; and user equipment for receiving the PDCCH and the PDSCH. The PDSCH can be transmitted to the user equipment starting from subframe n+k, which is the k | 08-27-2015 |
20150245347 | METHOD AND APPARATUS FOR PERFORMING UPLINK TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - A method for and apparatus for transmitting uplink transmission in a wireless communication system supporting multiple carriers is provided. A wireless device transmits the uplink transmission via an alternative Primary serving cell or Secondary serving cell in uplink between the UE and the eNB. Herein the uplink transmission is configured by enabling information with corresponding serving cell as the Primary serving cell or the Secondary serving cell for the uplink transmission. And then, a PUCCH and/or PUSCH can performed on the enabling serving cell and/or cells in consideration of power control more accurately and efficiently. | 08-27-2015 |
20150249564 | METHOD AND APPARATUS FOR TRANSMITTING MODULATION SYMBOL USING 256QAM IN A WIRELESS ACCESS SYSTEM - Disclosed herein is a wireless access system and, more particularly, methods and apparatuses for designing a 256 quadrature amplitude modulation (QAM) constellation point and transmitting a modulation symbol using the same in order to support a 256QAM scheme. The method for transmitting a modulation symbol using a 256 quadrature amplitude modulation (QAM) scheme at a transmitter in a wireless access system includes modulating octuplet bits into one modulation symbol using the 256QAM scheme, mapping the modulation symbol to one of 256QAM constellation points and transmitting the mapped modulation symbol. | 09-03-2015 |
20150256312 | METHOD AND APPARATUS FOR CONFIGURING A REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - A method for and apparatus for configuring a reference signal (RS) in a wireless communication system supporting multiple carriers is provided. A wireless device configures a new RS subframe at a periodicity among other subframes not including the new RS, identifies the new RS in the subframe which is a different subframe from the other subframes for legacy RS signals, and performs at least one of frequency or timing tracking using the new RS, wherein a frequency density of the new RS in the subframe is located with at least 3 resource element each other. And, this invention includes that RS signals and controls for multi-CCs are provided checking conflicts between the more accurately and efficiently. | 09-10-2015 |
20150256316 | METHOD AND APPARATUS FOR RECEIVING ACK/NACK IN WIRELESS COMMUNICATION SYSTEM - The present invention provides a method for receiving acknowledgement/not-acknowledgement (ACK/NACK) of a terminal in a wireless communication system. The method transmits uplink data through an uplink data channel and receives ACK/NACK for the uplink data. The uplink data channel is transmitted through aggregated carriers and the aggregated carriers include a first band recognizable to first and second type terminals and a second band recognizable only to the second type terminal. | 09-10-2015 |
20150257150 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA - The present invention relates to a method and apparatus for transmitting and receiving data. The method can include the steps of: a terminal transmitting, to a primary cell (P-cell), a first ACK/NACK for downlink transmission of the P-cell through a first uplink ACK/NACK channel; and transmitting, to a secondary cell (S-cell), a second ACK/NACK for downlink transmission of a first S-cell through a second uplink ACK/NACK channel. | 09-10-2015 |
20150257173 | METHOD AND USER EQUIPMENT FOR RECEIVING SIGNAL AND METHOD AND BASE STATION FOR TRANSMITTING SIGNAL - The present invention provides a method and an apparatus for reducing the amount of upper layer signals. Also, the present invention provides a method and an apparatus comprising: defining a new identifier for transmitting an upper layer signal for user equipment in a specific mode; and transmitting the upper layer signal by means of scrambling by using the new identifier, transmitting along with an error detection sign by using the new identifier, transmitting by using a user equipment-specific reference signal by using the new identifier, or transmitting based on control information transmitted by using the new identifier. | 09-10-2015 |
20150264666 | METHOD AND APPARATUS FOR SUPPORTING A CARRIER AGGREGATION GROUP IN A WIRELESS COMMUNICATION SYSTEM - A method for and apparatus for supporting a carrier aggregation group in a wireless communication system supporting multiple carriers is provided. A wireless device receives a RRC configuration signal including one or more serving cells from a macro cell and a RRC configuration signal including one or more serving cells from a small cell, and configures at least two carrier aggregation group (CAG)s based on the RRC configuration signal each. And, this invention includes that cell planning for multi-CCs is provided more accurately and efficiently. | 09-17-2015 |
20150280883 | METHOD FOR OPERATING TERMINAL IN CARRIER AGGREGATION SYSTEM, AND APPARATUS USING SAID METHOD - Provided are a method for operating a terminal in a carrier aggregation system and an apparatus using said method. Downlink control information (DCI) including a downlink assignment index (DAI) is received via an enhanced physical downlink control channel (E-PDCCH). The DCI received via the E-PDCCH includes an additional field which does not exist in the DCI received via a physical downlink control channel (PDCCH). If the DAI value is larger than 1, the additional field is used in selecting one of a plurality of PUCCH resources set by the upper layer, and the one resource is used in transmitting ACK/NACK. | 10-01-2015 |
20150282036 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN A WIRELESS COMMUNICATION SYSTEM - A method for and apparatus for transmitting and receiving data in a wireless communication system supporting multiple carriers is provided. A wireless device determines that a radio link failure (RLF) or a switch trigger condition is occurred for a cell among the multiple carriers, herein the multiple carriers each is set to a cell each, reconfigures an enhanced Physical Downlink Control Channel (ePDCCH) set of the cell that the RLF or the switch trigger is occurred, and determines whether cells of the multiple carriers each is on or off according to the reconfiguring. Thus, more efficient and accurate cell planning schemes are provided to transmit between the small cells and the UE to support inter-cell interference reduction and carrier extensions. | 10-01-2015 |
20150289144 | METHOD AND APPARATUS FOR SUPPORTING A CONTROL PLANE AND A USER PLANE IN A WIRELESS COMMUNICATION SYSTEM - A method for and apparatus for supporting a control plane (C-plane) and user plane (U-plane) in a wireless communication system supporting multiple carriers is provided. A wireless device receives a signal to initiate inter-frequency measurement from a macro cell, performs the inter-frequency measurement, and determines to configure a small cell for data transmission based on the inter-frequency measurement. And, this invention includes that a C-Plane and a U-Plane split over different carriers are existed and operated more accurately and efficiently. | 10-08-2015 |
20150296490 | METHOD AND APPARATUS FOR SUPPORTING TRANSMISSION EFFICIENCY IN A WIRELESS COMMUNICATION SYSTEM - A method for and apparatus for supporting transmission efficiency in a wireless communication system is provided. A wireless device determines a message type based on information, the message type indicating a plurality of transmission types; and performs adaptive measurement, data process, and power control according to the message type. Herein the information indicates one of the plurality of candidate message types that are predefined or are defined by a RRC message. | 10-15-2015 |
20150296518 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM - Disclosed is a method and apparatus for transmitting/receiving data in a wireless communication system. The method includes: a terminal transmitting a coverage enhancement request or capability information for the terminal; a base station determining a channel setting for the terminal based on the transmitted request or information; and transmitting downlink data and performing random access on the basis of the determined channel setting. Namely, a scheme for adaptively transmitting and receiving data in consideration of the coverage of the terminal is proposed. | 10-15-2015 |
20150304074 | METHOD AND APPARATUS FOR DETERMINING NUMBER OF HARQ PROCESSES IN WIRELESS COMMUNICATION SYSTEM - Provided are a method for determining the number of hybrid automatic repeat request (HARQ) processes in a carrier aggregated system configured with a plurality of serving cells, and an apparatus using such a method. The method receives data from a downlink subframe of a second serving cell, and transmits an ACK/NACK signal for the data from an uplink subframe of a first serving cell, wherein the first serving cell uses a first-type frame, the second serving cell uses a second-type frame, and the number of HARQ processes in the second serving cell are determined with respect to each subframe comprised in the second-type frame and on the basis of the number of downlink subframes comprised in each section comprising a set number of subframes. | 10-22-2015 |
20150304080 | METHOD AND APPARATUS FOR TRANSCEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Disclosed are a method and an apparatus for transceiving a reference signal in a wireless communication system. The present invention discloses a scheme for transceiving the reference signal the reference signal that is selectively added based on the capacity and characteristics of a terminal. The added reference signal may include newly defined CRS, DM-RS, TRS, MBSFN-RS or new RS or the like for cell recognition of the terminal, synchronization signal, measurement, etc. The location of a specific symbol/frequency of the like and selective power boosting are also disclosed for the added reference signal. Further, the transmission density of RS can be adaptively and selectively channel and transmitted as needed. Thus, data can be adaptively transceived in consideration of the coverage based on the location of characteristics of the terminal. | 10-22-2015 |
20150304088 | METHOD AND APPARATUS FOR TRANSMITTING ACK/NACK IN WIRELESS COMMUNICATION SYSTEM - Provided are a method for transmitting an ACK/NACK by a terminal configured with a plurality of serving cells, and a terminal using such a method. The method comprises: receiving data from a downlink subframe of a first serving cell; and transmitting the data for the ACK/NACK signal from an uplink subframe of a second serving cell; wherein the uplink subframe is determined in accordance with the ACK/NACK timing of the first serving cell, or the ACK/NACK timing of the second serving cell if the data is received from a downlink subframe of the second serving cell, which is identical to the downlink subframe of the first serving cell. | 10-22-2015 |
20150312775 | METHOD AND APPARATUS FOR SUPPORTING CONTROL PLANE AND USER PLANE IN WIRELESS COMMUNICATION SYSTEM - A method for and apparatus for supporting a control plane (C-plane) and a user plane (U-plane) in a wireless communication system supporting multiple carriers is provided. A wireless device configures a cell for the U-plane to receive and transmit data, determines to enable a User Plane Reception Period (U-RP) corresponding to the cell for the U-plane, and determines to receive and transmit data with the cell for the U-plane during the enabled U-RP. The cell for the U-plane includes at least one or more serving cells, and the cell for the U-plane has a different frequency from a cell for the C-plane. | 10-29-2015 |
20150319718 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING SIGNALS - The present invention relates to a method and an apparatus for transmitting uplink signals to a plurality of transmission points in a wireless communication system, comprising: receiving information on at least one parameter set group through upper layer signaling, wherein each of the at least one parameter set group includes a plurality of parameter sets; detecting a physical downlink control channel (PDCCH) comprising indication information for indicating specific parameter sets which belong to one of the parameter set groups from among the at least one parameter set group; and transmitting a physical uplink shared channel (PUSCH) by using the specific parameter set, wherein each of the plurality of parameter sets includes information on a power control parameter and information on timing advance (TA) for transmitting the PUSCH signal. | 11-05-2015 |
20150319776 | METHOD AND APPARATUS FOR DETERMINING TRANSPORT BLOCK SIZE IN WIRELESS COMMUNICATION SYSTEM - A method for determining a transport block size in a wireless communication system, and an apparatus using the method are provided. The method comprises: determining the number of effective resource blocks; and determining the transport block size of data transmitted on a data channel according to the number of effective resource blocks. In addition, a method for transmitting ACK/NACK (acknowledgement/not-acknowledgement) is provided. | 11-05-2015 |
20150319777 | METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - Provided are a method and an apparatus for transmitting downlink control information in a wireless communication system configured with a plurality of serving cells. The method generates downlink control information scheduling frequency division duplex (FDD) cells by means of FDD frames (DCI_FDD) and downlink control information scheduling time division duplex (TDD) cells by means of TDD frames (DCI_TDD), and transmits the DCI_FDD and the DCI_TDD, wherein parts of the fields of DCI_FDD and DCI_TDD are generated to have equal bit sizes, and if the FDD or TDD cell is used exclusively, then said parts of the fields in the FDD and TDD cells have mutually different bit sizes. | 11-05-2015 |
20150334762 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING SIGNALS - The present invention relates to a method and an apparatus for transmitting uplink signals to a plurality of transmission points in a wireless communication system, comprising: receiving information on at least one parameter set group through upper layer signaling, wherein each of the at least one parameter set group includes a plurality of parameter sets; detecting a physical downlink control channel (PDCCH) comprising indication information for indicating specific parameter sets which belong to one of the parameter set groups from among the at least one parameter set group; and transmitting a physical uplink shared channel (PUSCH) by using the specific parameter set, wherein each of the plurality of parameter sets includes information on a power control parameter and information on timing advance (TA) for transmitting the PUSCH signal. | 11-19-2015 |
20150341156 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK SIGNALS IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for a terminal transmitting ACK/NACK information in a carrier aggregation-based wireless communication system, comprising the steps of: aggregating a first TDD cell having a first UD configuration and a second TDD cell having the first UD configuration; transmitting ACK/NACK information corresponding to the first TDD cell through a UL SF on the first TDD cell; and transmitting ACK/NACK information corresponding to the second TDD cell through a UL SF on the second TDD cell, wherein the timing of the UL SF on the first TDD cell is provided as a UL SF set according to the first UD configuration, and the timing of the UL SF on the second TDD cell is provided based on a subset under the UL SF set according to the first UD configuration. | 11-26-2015 |
20150341864 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK SIGNALS IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for a terminal controlling uplink power in a carrier aggregation-based wireless communication system, comprising the steps of: configuring a first cell and a second cell; transmitting a first PUCCH signal from subframe #n in the first cell; and transmitting a second PUCCH signal from subframe #n in the second cell, wherein when the sum of transmit power of the first PUCCH signal and transmit power of the second PUCCHJ signal exceeds a predetermined maximum transmit power configured to the terminal, the transmit power of the PUCCH signal having a lower priority from among the first UCCH signal and the second PUCCH signal is reduced or the transmission is dropped. | 11-26-2015 |
20150341865 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK SIGNALS IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for a terminal controlling uplink power in the wireless communication system, comprising the steps of: configuring an uplink subframe (UL SF) of a first set and a UL SF of a second set; receiving a downlink control information (DCI) format including a bitmap for indicating transmit power control (TPC) for a plurality of terminals; and controlling transmit power of an uplink channel by using TPC information on the terminals from the bitmap, wherein the TPC information is used for controlling transmit power of an uplink channel transmitted from the UL SF of the first set when the DCI format comprises a first identifier, and the TPC information is used for controlling transmit power of an uplink channel transmitted from the UL SF of the second set when the DCI format comprises a second identifier. | 11-26-2015 |
20150341877 | METHOD AND APPARATUS FOR PERFORMING SYNCHRONIZATION IN WIRELESS COMMUNICATION SYSTEM - A method for and apparatus for performing a synchronization in a wireless communication system is provided. A wireless device checks a configuration including a resource relationship about reference signals (RSs) between a first cell and a second cell; receives a first reference signal (RS) from the first cell; determines a timing reference to receive a second RS based on the resource relationship; receives the second RS from the second cell based on the timing reference; performs a frequency tracking using the second RS; and decodes data signals from the second cell. | 11-26-2015 |
20150341918 | METHOD FOR RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATIONS SYSTEM AND APPARATUS THEREFOR - The present invention relates to a wireless communication system. More specifically, a method for enabling a terminal to receive control information in a wireless communications system according to the present invention includes the steps of: constituting PCell and SCell; and monitoring a plurality of expected channels in a search space to receive the control information from a sub-frame #n in SCell, wherein if the sub-frame #n is included in a particular sub-frame set, the search space includes CSS, or if the sub-frame #n is not included in the particular sub-frame set, the search space includes only USS. | 11-26-2015 |
20150341923 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK SIGNALS IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for a terminal transmitting ACK/NACK information in a carrier aggregation-based wireless communication system, comprising the steps of: receiving one or more PDCCH signals from a specific SF section in an FDD cell; receiving one or more PDSCH signals indicated by the one or more PDCCH signals; and transmitting ACK/NACK information corresponding to the one or more PDSCH signals through a physical uplink control channel (PUCCH), wherein the specific SF section includes one or more first SFs and one second SF, wherein PUCCH transmission is limited in one or more first UL SFs corresponding to the one or more first SFs, wherein PUCCH transmission is allowed from a second UL SF corresponding to the second SF, the ACK/NACK information is transmitted from the second UL SF by using a PUCCH resource allocated by an upper layer when a PDSCH signal exists in the one or more first SFs, and wherein the ACK/NACK information is transmitted from the second UL SF by using a PUCCH resource linked to an index of a resource from which a corresponding PDCCH signal is transmitted when one PDSCH signal exists only in the second SF. | 11-26-2015 |
20150349936 | METHOD AND APPARATUS FOR PERFORMING HARQ IN CARRIER AGGREGATION SYSTEM - Provided are an apparatus and a method for executing an uplink hybrid automatic repeat request (HARQ) in a carrier aggregation system. The method transmits data to a base station from an uplink subframe of a second cell, and receives, from the base station, an acknowledgement/not-acknowledgement (ACK/NACK) or scheduling information for the data from a downlink subframe of a first cell, wherein if the timing relationship between the uplink subframe of the second cell and the downlink subframe of the first cell does not match the timing relationship for when the first cell is being used exclusively, then the scheduling information is received from the downlink subframe of the first cell. | 12-03-2015 |
20150349940 | METHOD AND APPARATUS FOR PERFORMING QUASI CO-LOCATION IN WIRELESS ACCESS SYSTEM - The present invention relates to various methods for performing quasi co-location (QCL) and apparatuses supporting the same. As an embodiment of the present invention, a method for performing quasi co-location (QCL) for a new carrier type (NCT) by a terminal in a wireless access system may include the steps of: receiving a higher layer signal including a QCL reference CRS information parameter indicating CRS information of a reference carrier; receiving a physical downlink control channel (PDCCH) signal including a PDSCH remapping and quasi co-location indicator (PQI) field; receiving a CSI-RS of a QCLed NCT and a CRS of a reference carrier on the basis of a PQI field and a QCL reference CRS information parameter; and performing frequency tracking of the NCT and the reference carrier on the basis of the CSI-RS of the NCT and the CRS of the reference carrier. | 12-03-2015 |
20150350941 | METHOD FOR PERFORMING DISCOVERY SIGNAL MEASUREMENTS IN WIRELESS COMMUNICATION SYSTEM AND USER EQUIPMENT THEREOF - Disclosed is a method of performing a measurement in UE. A method for performing discovery signal measurements, the method performed by a user equipment (UE) and includes: receiving measurement configuration information including a sub-frame offset between a secondary synchronization signal (SSS) and a channel-state information reference signal (CSI-RS) in a discovery signal; setting configurations based on the measurement configuration information; and performing the discovery signal measurement based on the CSI-RS. | 12-03-2015 |
20150351003 | METHOD AND DEVICE FOR DETECTING DISCOVERY SIGNAL - A method and a device for detecting a discovery signal in a wireless communication system are provided. A wireless device receives a discovery setting for detecting a discovery signal of a target cell from a serving cell, and detects the discovery signal transmitted by the target cell according to the discovery setting. The discovery setting includes information on a discovery subframe to which the discovery signal is transmitted among a plurality of subframes. | 12-03-2015 |
20150351061 | METHOD FOR ADDING SECONDARY CELL IN WIRELESS ACCESS SYSTEM SUPPORTING CARRIER AGGREGATION AND APPARATUS FOR SUPPORTING SAME - The present invention, which is utilized in a wireless access system supporting carrier aggregation (CA), relates to methods for acquiring an uplink synchronization from two or more geographically distanced cells, particularly S-cells, and indicating that the corresponding cell is an S-cell, and to an apparatus for supporting same. | 12-03-2015 |
20150351092 | DATA TRANSMISSION METHOD FOR TERMINAL IN A WIRELESS COMMUNICATION SYSTEM, AND TERMINAL USING THE METHOD - Provided are a data transmission method for a terminal in a wireless communication system, and a terminal using the method. The terminal determines the number of information bits transmitted via a physical uplink shared channel (PUSCH), determines the energies respectively distributed to a reference signal and data comprising the information bits in accordance with the number of information bits, and transmits the reference signal and the data at the respective determined energies. | 12-03-2015 |