Abstract:
The present invention relates to a wireless communication system. A method by which a terminal receives a signal by removing interference in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: detecting a demodulation reference signal (DMRS) from each of a plurality of resource blocks (RBs) included in a reception subframe; detecting an interference absence reference signal from the RB for which the detection of the DMRS has failed; receiving a signal on the basis of the assumption that the RBs from which an interference absence reference signal has been detected among the RBs for which the detection of the DMRS has failed have no interference from an interference base station, and RBs, from which the interference absence reference signal has not been detected among the RBs for which the detection of the DMRS has failed, have interference from the interference base station.
Abstract:
The present invention relates to a wireless communication system. A method for reporting CSI (Channel State Information) in a cooperative multi-point (CoMP) wireless communication system, the method performed by a user equipment (UE) and comprising receiving first resource configuration information for a CSI-RS (Channel-State Information-Reference Signal) and second resource configuration information for interference measurement; and calculating CSI using the first resource configuration information and the second resource configuration information, the CSI being for one or more base stations (BSs) among a plurality of BSs participating the COMP, wherein an interference measurement resource according to the second resource configuration information exists in a union of zero-power CSI-RS resources of each of the plurality of BSs.
Abstract:
The present invention relates to a wireless communication system. A method for receiving data by a user equipment (UE) in a cooperative multi-point (CoMP) wireless communication system includes receiving downlink control information (DCI) that does not contain information indicating a transmission base station (BS) that actually transmits data among a plurality of BSs that participate in CoMP, receiving information about zero-power channel state information-reference signal (CSI-RS) of each of the plural BSs, and assuming that data is not mapped to a resource element of zero-power CSI-RS with a lowest index and receiving the data through a physical downlink control channel (PDSCH).
Abstract:
The present invention relates to a wireless communication system. According to one embodiment of the present invention, a method for transmitting, by a terminal, channel state information (CSI) in a wireless communication system comprises the steps of: subsampling a code book for four antenna ports, including sixteen precoding matrixes; and feeding back the CSI on the basis of the subsampled code book, wherein the CSI includes at least one of a rank indicator (RI), a precoding matrix indicator (PMI) and a channel quality indicator (CQI), and if the RI is 3, the subsampled code book can be determined so as to minimize a chordal distance between subsampled code words.
Abstract:
The present invention relates to a method by which a terminal feeds back channel state information for downlink transmission in a wireless communication system supporting multiple antennas. More specifically, the present invention comprises a step of transmitting a first precoding matrix index (PMI) and a second PMI for each sub-band, wherein a precoding matrix preferred by the terminal is instructed to combine the first PMI and the second PMI, and a precoding codebook in which a portion of a plurality of bits forming the second PMI is additionally used to form the first PMI is applied.
Abstract:
A method for receiving information for interference cancellation of a user equipment (UE) includes detecting downlink control information including interference control information for a specific resource block (RB) scheduled for the UE by using an index of the specific RB, wherein the interference control information for the specific RB includes control information related to interference signal in the specific RB and indicates that the interference control information for the specific RB is the same as interference control information for one or more RBs having a series of indices subsequent to the index of the specific RB, and performing cancellation of interference signal corresponding to the interference control information in the specific RB and the one or more RBs using the interference control information for the specific RB.
Abstract:
Disclosed are a method and device for performing uplink transmission and reception in a wireless communication system. A method for a terminal to perform uplink transmission and reception in a wireless communication system according to an embodiment disclosed herein may comprise the steps of: receiving configuration information related to a serving cell from a base station, the configuration information including information about a plurality of TAGs associated with the serving cell; receiving DCI including first instruction information and second instruction information from the base station; and performing at least one of first uplink transmission or second uplink transmission on the basis of at least one of the first instruction information or the second instruction information.
Abstract:
A method by which a terminal receives data in a wireless communication system can comprise the steps of: receiving configuration information relating to a control resource of a physical control channel; allowing one or more control resources included in the configuration information to be respectively set to a first control resource group or a second control resource group, and receiving a first physical control channel and a second physical control channel on the basis of the configuration information; receiving a first physical data channel on the basis of the first control resource group related to a control resource in which the first physical control channel is received; and receiving a second physical data channel on the basis of the second control resource group related to a control resource in which the second physical control channel is received.
Abstract:
The present disclosure provides a method for transmitting or receiving a data channel in a wireless communication system, and an apparatus therefor. Specifically, a method for receiving a data channel by a user equipment (UE) in a wireless communication system may include: receiving downlink control information (DCI), wherein the DCI includes i) a transmission configuration indication (TCI) field and ii) an antenna port field; and receiving the data channel based on the DCI, wherein multiple TCI states are indicated on the basis of the TCI field, a demodulation reference signal (DM-RS) port is indicated on the basis of the antenna port field, and a repetition scheme of the data channel is determined on the basis of the number of code division multiplexing (CDM) groups including a DM-RS port in which the data channel is received.
Abstract:
The present specification proposes a method for transceiving a plurality of PDSCHs in a wireless communication system and an apparatus therefor. Specifically, a method performed by a user equipment (UE) may comprise the steps of: transmitting UE capability information related to the number of beams received that can be simultaneously supported; receiving a plurality of physical downlink control channels (PDCCH) comprising PDSCH scheduling information; and receiving the plurality of PDSCHs by using preset spatial quasi co-location (QCL) information on the basis of at least one PDSCH scheduled within the time required to apply the spatial QCL information.