Abstract:
A method for receiving interference information for interference cancellation of a user equipment (UE) includes receiving a multi-user downlink (DL) control channel including cyclic redundancy check (CRC) parity bits scrambled by a multi-user identifier (ID), from a base station (BS), wherein the multi-user DL control channel includes control information for each of a plurality of transport blocks (TBs) to be transmitted through a plurality of layers, and the TBs are configured to be transmitted to other UEs in a multi-user group, and decoding TBs to be transmitted to other UEs in the multi-user group using the control information.
Abstract:
Disclosed is a method by which a first terminal receives a signal in a wireless communication system. Particularly, the method comprises the steps of: receiving a synchronization signal for device-to-device communication from a second terminal; obtaining synchronization based on the synchronization signal; receiving a boundary signal for the device-to-device communication from the second terminal; and receiving a control signal or a data signal using the device-to-device communication based on the boundary signal, wherein the synchronization signal is transmitted by using a part of one symbol.
Abstract:
A method for receiving a reference signal for positioning in a wireless communication system by a user equipment (UE) is disclosed. The method includes receiving a plurality of reference signal sequences for positioning to which different frequency shift values are applied, calculating a correlation between the plurality of reference signal sequences for positioning and transmitted reference signal sequences for positioning corresponding to the plurality of reference signal sequences in a time domain, and determining a time domain index having a highest value from the correlation as a reference time point for positioning, wherein the frequency shift value is determined according to the sum of multiplication of an index of each reference signal sequence and a frequency shift interval, and frequency offset.
Abstract:
According to an embodiment of the present invention, disclosed is a method for supporting, by a serving base station, cancellation of interference signals from signals received at a target terminal in a wireless communication system. The method comprises the steps of: receiving scheduling information of at least one neighboring base station from the at least one neighboring base station; configuring a set of auxiliary information for canceling the interference signals of a target terminal on the basis of the scheduling information of the at least one neighboring base station; and transmitting the set of auxiliary information for canceling the interference signals of the target terminal to the target terminal, wherein the auxiliary information comprises at least one of demodulation reference signal (DM-RS) related information and cell-specific reference signal (CRS) related information in association with interference signals from respective neighboring base stations.
Abstract:
A method for reporting channel state information (CSI) in a wireless communication system and an apparatus therefor are disclosed. According to an example of the present invention, a method in which a terminal transmits CSI in a wireless communication system may comprise: a step of receiving data about a feedback antenna port configuration from a base station; and a step of transmitting CSI regarding K (K≧1) feedback antenna ports from each of N (N≧2) reporting resources to the base station. The K feedback antenna ports may be a part of M (M≧2) antenna ports. The CSI regarding K feedback antenna ports may include phase information about the K feedback antenna ports. The phase information about the K feedback antenna ports may be determined by assuming a phase difference with respect to a reference antenna port.
Abstract:
A method for receiving downlink signal and an apparatus therefor are disclosed. A method for enabling a user equipment (UE) to receive a downlink signal from an eNB including a plurality of antenna ports in a wireless communication system includes: receiving a precoded reference signal according to a precoded reference signal configuration for the plurality of antenna ports; measuring receive (Rx) power of the reference signal for each of the plurality of antenna ports; and reporting, to the eNB, at least one of Rx power values of the reference signal, measured for the plurality of antenna ports. The reference signal is for serving cell search of the UE and precoding is applied to the plurality of antenna ports through which the reference signal is transmitted.
Abstract:
The present invention relates to a wireless communication system and, more specifically, provides a method for controlling uplink power and a device therefor. The method whereby user equipment controls uplink transmission power in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving configuration information regarding a plurality of subframe sets from a base station; receiving, in the subframe index j, transmission power control (TPC) information from the base station; and determining transmission power for an uplink channel in the subframe index i on the basis of the TPC information. The TPC information may be applied to a power control process related to a first subframe set, to which the subframe index i belongs, among the plurality of subframe sets.
Abstract:
The present invention relates to a method for a base station transmitting a precoded signal to user equipment in a wireless communication system supporting a multi-antenna. More specifically, precoding is conducted by using a precoding matrix to which large delay-cyclic delay diversity (LD-CDD) is applied, wherein the precoding matrix is determined by dividing into matrices for a horizontal direction antenna and a perpendicular direction antenna.
Abstract:
A method of a receiving a downlink signal from a base station including a two-dimensional (2D) antenna array composed of a plurality of antenna elements in a wireless communication system is disclosed. The method includes receiving a reference signal allocated to at least one column-direction antenna array of the 2D antenna array, receiving information about a semi-static beam candidate set composed of at least one semi-static beam applicable to the at least one column-direction antenna array, and measuring an average channel state for semi-static beamforming using the received reference signal and the information about the semi-static candidate set. The 2D antenna array is virtualized to one-dimensional (1D) antenna array supporting dynamic beamforming by applying at least one semi-static beam in the semi-static beam candidate set to the column-direction antenna array.
Abstract:
The present invention relates to a method and an apparatus for reporting channel state information of user equipment in a multi-cell wireless communication system. More particularly, the present invention comprises the steps of: receiving from a serving cell information on interference measurement resources (IMR) linked to at least one channel state information process (CSI process) and at least one item of CSI measurement information with respect to a plurality of radio resource sets having different interference characteristics; and reporting channel state information with respect to a specific radio resource set according to at least one item of information on the IMR and the at least one item of CSI measurement information, wherein the radio resource sets are defined so that uplink-downlink status changes depending on a system load state, and are linked to different channel state estimation processes.