Abstract:
A method for performing, by a UE, precoding using a codebook in a wireless communication system includes: receiving a reference signal for channel estimation from an eNB; estimating a channel through the received reference signal; determining a precoding matrix related to the estimated channel in a codebook; and feeding back, to the eNB, a precoding matrix index (PMI) corresponding to the determined precoding matrix, wherein the codebook is generated in consideration of at least one of a region to which the UE belongs and the position of the UE.
Abstract:
A method for channel measurement based on a channel state information (CSI)-reference signal (RS) in a wireless communication system including receiving, by a terminal, CSI-RS resource configuration information through higher layer signaling and receiving, by the terminal, the CSI-RS according to the CSI-RS resource configuration information; wherein the CSI-RS resource configuration information includes information on one or more cell specific-RS (CRS) antenna ports assumed to be quasi-co-located with one or more antenna ports used to transmit the CSI-RS, and deriving, by the terminal, CSI based on the CSI-RS using the information on the one or more CRS antenna ports.
Abstract:
Disclosed are a method for assisting device-to-device (D2D) communication in a wireless communication system supporting D2D communication and a device therefor. Specifically, the method for a D2D assisting device to assist D2D communication in a wireless communication system supporting D2D communication may comprise the steps of: receiving resource pool information for D2D communication from a base station; performing D2D activity monitoring on a D2D user equipment by listening to one or more D2D communication links in the resource pool; and reporting the results of the D2D activity monitoring to the base station, or allocating a resource to the D2D user equipment on the basis of the results of the D2D activity monitoring.
Abstract:
According to an aspect of the present disclosure, a method for performing a measurement through a Discovery Reference Signal (DRS) performed by a user equipment (UE) in a wireless communication system includes receiving DRS Measurement Timing Configuration (DMTC) information in relation to a DRS measurement time from a base station (BS) in order to perform a measurement using the DRS; receiving the DRS from one or more cells in a specific carrier frequency based on the received DRS Measurement Timing Configuration information; performing a measurement through the received DRS; and reporting the measurement result to the BS.
Abstract:
A method for a terminal transmitting channel state information (CSI) in a wireless access system that supports massive multiple-input multiple-output (MIMO) according to one embodiment of the present invention may comprise the steps of: receiving CSI configuration information for reporting CSI; and transmitting CSI and identification information with respect to the partial channel corresponding to the CSI of the full channel according to the massive MIMO, on the basis of the CSI configuration information.
Abstract:
The present invention provides a method for performing positioning by a terminal in a wireless communication system including: receiving assistance data including reference cell information (ReferenceCellInfo) and neighboring cell information (NeighbourCellInfo) from a serving base station; receiving a positioning reference signal from each of a reference cell and at least one neighboring cell based on the received assistance data; measuring a reference signal time difference (RSTD) for the reference cell of at least one neighboring cell by using the received positioning reference signal; and reporting the measured RSTD to the serving base station.
Abstract:
The present invention relates to a wireless communication system. A method for transmitting channel state information (CSI) by a user equipment in a wireless communication system includes receiving a CSI-reference signal (CSI-RS), determining overhead of a common reference signal (CRS) resource element based on the same antenna port number as an antenna port number associated with the CSI-RS, and transmitting the CSI calculated based on the CSI-RS and the overhead of the CRS resource element.
Abstract:
A method and a user equipment (UE) for receiving, and a method and a base station (BS) for transmitting a UE specific reference signal based-downlink data channel in a wireless communication system are discussed. The method for receiving a UE specific reference signal based-downlink data channel according to an embodiment includes receiving a downlink control channel from a network; and receiving the UE-specific reference signal based-downlink data channel from the network based on the downlink control channel. The downlink control channel includes an indicator indicating one of two or more parameters configured by a higher layer. The two or more parameters indicate antenna ports of a certain reference signal which is assumed to be quasi co-located with antenna ports of a UE-specific reference signal.
Abstract:
The present invention relates to a method and a device for estimating a channel of a terminal in a wireless communication system that supports multiple antennas. Particularly, the method comprises the steps of receiving a channel state information-reference signal (CSI-RS) for a plurality of first domain antennas and a cell-specific reference signal (CRS) for a plurality of second domain antennas, and estimating the all of the channels on the basis of a first channel for the first domain antennas estimated from the CSI-RS and a second channel for the second domain antennas estimated from the CRS.
Abstract:
A method and apparatus for processing aperiodic channel state information (CSI) in a wireless communication system is provided. A user equipment (UE), receives a request for aperiodic CSI report, and assigns capability of the aperiodic CSI report for a master evolved NodeB (MeNB) and a secondary eNB (SeNB) in dual connectivity.