Abstract:
In the present application, a method for reporting channel status information (CSI) for multi-antenna-based beamforming by a terminal in a wireless communication system is disclosed. Specifically, the method comprises the steps of: receiving reference signal configuration information including two or more reference signal resources through an upper layer; receiving CSI process information through the upper layer; receiving a reference signal from a base station on the basis of the reference signal configuration information; and calculating the CSI on the basis of the CSI process information and the received reference signal and reporting the CSI to the base station, wherein the CSI process information includes a reference signal type indicator indicating a mapping relationship between the reference signal configuration information and multiple antennas.
Abstract:
Disclosed in the present application is a method for a receiving end to report feedback information to a transmitting end in a wireless communication system. Specifically, the method comprises receiving, from a base station, a plurality of reference signals corresponding to a two-dimensional antenna array; determining the number of horizontal antenna ports and the number of vertical antenna ports which reflect the mobility of a receiving end, by using the horizontal channel and the vertical channel estimated based on the plurality of reference signals; calculating a horizontal dimensional control matrix and a vertical dimensional control matrix by using the determined numbers of horizontal antenna ports and vertical antenna ports; determining and reporting a horizontal precoding matrix, a vertical precoding matrix, and a three-dimensional channel link by using the horizontal dimensional control matrix, the vertical dimensional control matrix, the horizontal channel and the vertical channel.
Abstract:
The present application discloses a method for transmitting a signal from a transmitting end to a receiving end in a wireless communication system. Specifically, the method comprises the steps of: configuring a precoder set including one or more precoders; precoding the signal by cyclically applying the one or more precoders in a specific resource unit; and transmitting the precoded signal to the receiving end, wherein at least one of the size of the precoder set and the one or more precoders is determined on the basis of the mobility of the receiving end.
Abstract:
The present invention provides a hybrid-beamforming method for supporting multi-ranks, a beam estimation method and devices for supporting the methods. A hybrid-beamforming performance method for supporting multi-ranks in a wireless access system, according to one embodiment of the present invention, can comprise the steps of: detecting, by a transmission end, at least two analog beam candidates having a channel gain greater than or equal to a reference value; pre-compensating analog beam coefficients for at least two analog beam candidates such that one analog beam among the at least two analog beam candidates includes at least two digital beams; resetting digital PMI coefficient values for at least two digital beams so as to reflect the pre-compensated analog beam coefficients; and transmitting a multi-rank signal by using the pre-compensated analog beam coefficients and the reset digital PMI coefficient values. At this time, analog beamforming and digital beamforming are combined such that hybrid-beamforming can be performed.
Abstract:
A mobile terminal including a display; a communication device configured to communicate with an external device; and a controller configured to display a first interface on the display including information of a multitude of members participating in raising a common fund by being associated with a prescribed account for the common fund, obtain security information on a prescribed first account from a first member among the members, in response to a first command received through the first interface, if the obtained security information matches preset security information for the first account, deposit a prescribed amount into the prescribed account using the first account, and automatically delete the information of the first member from the first interface after payment of the first member.
Abstract:
The present document is for a wireless communication with reduced internal signaling burden in the distributed antenna system (DAS). In the proposed method, a user equipment (UE) receives a first information unit from the network by a first distributed unit (DU) among multiple DUs distributed within the UE. The first DU reports reception information of the first information unit to a central unit (CU) of the UE, wherein the CU controls the multiple DUs. The first DU receives, from the CU, a direction regarding a transfer of the first information unit to the CU, and transfers the first information unit to the CU when the direction indicates a specific value.