Abstract:
There is disclosed a mobile terminal including a first case comprising a battery loading portion, a battery loaded in the battery loading portion, a second case coupled to the first case and configured to cover the battery, a coil antenna module arranged between the second case and the battery, and a controller electrically connected to the coil antenna module and configured to transmit and receive a signal or receive an electric power, wherein the coil antenna module includes an insulating sheet, a first coil arranged in a surface of the insulating sheet, a second coil arranged in the first coil, a third coil arranged in the second coil, and a magnetic sheet disposed on the surface of the insulating sheet, and ends of the first, second and third coils are arranged in the surface of the insulating sheet or dividedly arranged in both surfaces of the insulating sheet. The mobile terminal may realize the coil antenna module including a plurality of coils configured to perform diverse manners of wireless communication in a limited area.
Abstract:
The present invention relates to a method by which a base station transmits a reference signal in a wireless communication system supporting a full-dimension antenna, and a device for the same. Particularly, the method comprises the steps of: transmitting, to a terminal, a channel state information-reference signal (CSI-RS) configuration indicating the number of antenna ports for transmitting a full-dimension antenna association reference signal; transmitting, to the terminal, a CSI-RS for at least one first antenna port among whole antenna ports for the full-dimension antenna; and receiving, from the terminal, channel information on all of the antenna ports on the basis of the at least one first antenna port.
Abstract:
An embodiment of the present invention relates to a method by which a base station transmits a downlink signal in wireless communication system, the method including the steps of: transmitting a demodulation-reference signal (DMRS) approval; determining a long-term channel property from the DMRS of a first slot of an uplink sub-frame received by responding to the DMRS approval; receiving a first reference signal from a second slot of the sub-frame on the basis of the determined long-term channel property; determining a short-term channel property from the first reference signal; determining a pre-coding matrix from the long-term channel property and the short-term channel property; and transmitting a downlink signal through the determined pre-coding matrix.
Abstract:
A device to device (D2D) signal transmission method in which a D2D terminal transmits a D2D signal in a wireless communication system according to one embodiment of the present invention comprises the steps of: defining a time-frequency resource range in which the D2D signal is to be transmitted in a subframe; and transmitting the D2D signal through the defined time-frequency resource range, wherein the frequency resource range in which the D2D signal is to be transmitted in the subframe includes a first frequency resource range and a second frequency resource range, positions of the first frequency resource range and the second frequency resource range are defined by an independent parameter, and dimensions of the first frequency resource range and the second frequency resource range are defined by a common parameter.
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:
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.
Abstract:
The present invention relates to a wireless communication system. A method for a terminal for removing interference and receiving a signal in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving configuration information for channel status information which has utilized interference measurements; and on the basis of the configuration information, measuring the interference from an interfering cell, and on the basis of the measured interference, measuring the channel status information from an interference measurement resource (IMR), wherein interference can be measured, in a resource block in which an IMR exists, on the basis of whether the interfering cell is transmitting data and the type of the signal transmitted from the IMR.
Abstract:
In this application, a method for a terminal cancelling interference from a neighboring cell is disclosed. More specifically, the method comprises the steps of: receiving one or more interference cancellation assistance information indicating one of a plurality of parameter combinations for detecting an interference signal from the neighboring cell; detecting an interference signal from the neighboring cell, based on the one or more interference cancellation assistance information and cancelling the interference signal in signals received from a serving cell, wherein the interference signal is a downlink data channel of the neighboring cell or a downlink control channel of the neighboring cell, and the plurality of parameter combinations is configured through a higher layer.
Abstract:
Provided is a method for receiving a downlink signal in a wireless communication system, the method comprising: transmitting, by a user equipment (UE), information on vertical angle restriction to be used for a precoding matrix which the UE desires to an eNodeB (eNB); and receiving, by the UE, a downlink signal precoded according to the information on vertical angle restriction, wherein the information on vertical angle restriction includes values indicating a lower limit angle and an upper limit angle for the precoding matrix.
Abstract:
A method for estimating a channel transmitted through a 2-dimensional (2D) array antenna by a user equipment (UE) in a wireless communication system comprising calculating channel estimation values for each of horizontal and vertical direction antenna arrays of the 2D array antenna in a channel state information-reference signal (CSI-RS) resource using a discrete Fourier transform (DFT) based channel estimation scheme, wherein the channel estimation values are expressed as one or more non-zero channel taps due to multipath fading; deriving channel vectors for each of the horizontal direction antenna arrays and channel vectors for each of the vertical direction antenna arrays using L significant power sums of filtered channel taps; and calculating channel vectors of the 2D array antenna by operating Kronecker product of the channel vectors for each of the horizontal direction antenna arrays and the channel vectors for each of the vertical direction antenna arrays.