Abstract:
Disclosed are a method for transmitting/receiving channel state information (CSI) in a wireless communication system and a device therefor. Specifically, a method for transmitting channel state information by a terminal in a wireless communication system may comprise the steps of: determining CSI for a serving cell in an unlicensed band; and transmitting the CSI at a periodic CSI report time point within a reserved resource period (RRP) which is a time period reserved for transmitting/receiving data in the serving cell.
Abstract:
According to one embodiment of the present invention, a method for reporting a channel state of a downlink channel transmitted through two-dimensionally arranged Nt number of antenna ports is carried out by a terminal, wherein the method comprises the steps of: configuring each of the Nt number of antenna ports to be mapped to all antenna elements belonging to a specific antenna element group, and each antenna port of an antenna port group corresponding to a reference signal (RS), which is transmitted in the same OFDM symbol, to be mapped to different antenna element groups from each other, and receiving a channel state information (CSI)-RS configuration for reporting a channel state for the antenna port group; and calculating channel state information on a downlink channel through a CSI-RS received using the received CSI-RS configuration, and reporting, to a serving cell, the calculated channel state information, wherein the reported channel state information can contain a precoding matrix for selecting an antenna port group and a precoding matrix to be applied to the selected antenna port group.
Abstract:
The present invention relates to a wireless communication system. According to an embodiment of the present invention, a method for a device receiving a signal by using NAICS (Network-Assisted Interference Cancellation and Suppression) in a wireless communication system that supports carrier aggregation comprises the steps of: transmitting, in carrier aggregation, device capability information comprising band combination information which indicates band combination supported by the device; and receiving a signal on the basis of the device capability information, wherein the band combination information can include a maximum bandwidth supporting the NAICS for the band combination.
Abstract:
A method for receiving aperiodic channel status information (CSI) report in a wireless access system, the method performed by an evolved Node-B (eNB) and comprising: transmitting a radio resource control (RRC) message configuring two or more CSI measurement sets, wherein each of the two or more CSI measurement sets consists of one or more subframes; transmitting an aperiodic CSI request field triggering the aperiodic CSI report via a physical downlink control channel (PDCCH) on a first subframe; and receiving the aperiodic CSI report with CSI on a second subframe, wherein the CSI is associated with a valid subframe which is included in one of the two or more CSI measurement sets, and the valid subframe is defined as a closest subframe from the second subframe in consideration of predetermined condition.
Abstract:
A method is provided for receiving a downlink signal through an Enhanced Physical Downlink Control Channel (EPDCCH) in a wireless communication system by a user equipment (UE). The UE receives a parameter indicating a quasi co-location behavior type is. The UE further receives a demodulation reference signal (DMRS) associated with the EPDCCH. The UE attempts to decode the EPDCCH based on the DMRS. If a transmission mode configured in the UE is a transmission mode 10, the UE assumes that antenna ports of the DMRS are quasi co-located with antenna ports of a reference signal determined by the parameter.
Abstract:
A disclosure of the present specification provides a method for detecting a discovery signal. The method is a method for detecting discovery signals from a plurality of transmission points (TP) using the same physical cell identifier (PCID) and may comprise the steps of: determining scrambling identifiers of the discovery signals for the plurality of transmission points on the basis of the PCID which is commonly used by the plurality of transmission points and resource elements (REs) of the discovery signals transmitted from the plurality of transmission points; and demodulating the discovery signals on respective positions of the resource elements using the determined scrambling identifiers to detect the discovery signals.
Abstract:
The present invention relates to a wireless communication system. According to an embodiment of the present invention, a method for receiving, by a terminal, a signal by using a network-assisted interference cancellation and suppression (NAICS) in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: transmitting terminal capability information including information on an interference transmission mode (TM) supported by the terminal; receiving network assistance information corresponding to the terminal capability information; and receiving a signal by using the network assistance information, wherein the terminal capability information can include port number information about a number of common reference signal (CRS) ports of an interfering cell on which the terminal can perform NAICS.
Abstract:
The present invention relates to a method and an apparatus for beamforming by a base station in a wireless communication system supporting multiple antennas. Particularly, the method comprises the steps of: determining a first coverage on the basis of long-term feedback information; setting multiple logical antenna ports for the first coverage on the basis of a combination of multiple horizontal beams and multiple vertical beams; and transmitting a channel state information-reference signal to a terminal according to a precoding matrix index which is set on the basis of the multiple antenna ports, wherein the multiple horizontal beams respectively correspond to multiple second coverages divided into horizontal domains on the basis of the first coverage, and the multiple vertical beams respectively correspond to multiple third coverages divided into vertical domains on the basis of the first coverage.
Abstract:
The present invention provides one of embodiments comprising: receiving an upper layer signal including configuration information which indicates the size and use of the TxOP period in a primary cell (Pcell); receiving a scheduling grant including scheduling information on the TxOP period in a first subframe of the TxOP period; and transmitting and receiving data according to the use of the TxOP period on the basis of the scheduling information in a secondary cell (Scell) during the TxOP period, wherein the size of the TxOP period is defined by the number of subframes of the Scell and the use of the TxOP period is set by a downlink data transmission or an uplink data transmission, wherein whether the subframes of the Scell are included in the TxOP period can be determined according to a transmission direction of subframes of the Pcell corresponding to the subframe of the Scell.
Abstract:
A method by which a user equipment (UE) transmits device-to-device (D2D) data in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: determining a bitmap to be applied to a subframe pool for data transmission by using information indicating a time resource pattern (TRP); and transmitting D2D data in a subframe indicated by the bitmap, wherein a set of bitmaps indicatable by the information indicating the TRP when a radio resource control (RRC) information element related to a TRP subset is configured in the UE is a subset of a bitmap set indicatable by the information indicating the TRP when the UE is not concerned in the RRC information element related to the TRP subset.