Abstract:
Disclosed is a method for transmission of a device-to-device (D2D) signal by a terminal in a wireless communication system. The method for transmission of a D2D signal, according to an embodiment of the present invention, comprises the steps of: receiving a location of resources, for transmitting a scheduling assignment, from a base station; and transmitting the scheduling assignment by means of the resources, wherein the scheduling assignment comprises information indicating a subframe, for transmitting a D2D-related signal in a scheduling assignment period that is subsequent to the subframe in which the scheduling assignment is transmitted.
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:
There is provided a method for performing device-to-device (D2D) communication in a wireless communication system, the method comprising: by a first device, acquiring a resource pool for the D2D communication, wherein the resource pool includes a SA (scheduling assignment) resource pool indicating a resource region for SA transmission and a data resource pool indicating a resource region for D2D data transmission; performing D2D synchronization with a base station or a specific device; transmitting a SA (scheduling assignment) to a second device using the SA resource pool.
Abstract:
The present invention discloses a method and an apparatus for transmitting a reference signal in a wireless communication system. More specifically, the method comprises configuring a first antenna group on the basis of a plurality of antenna elements configured by a horizontal domain antenna element and a vertical domain antenna element; transmitting a configuration with regard to a specific sub frame to first terminals through a first antenna group; receiving a sounding reference signal (SRS) through the specific sub frame from the first terminals; selecting at least one second terminal among the first terminals on the basis of the sounding reference signal; and transmitting a channel state information-reference signal (CSI-RS) with respect to the at least one second terminal, wherein the specific sub frame is characterized in that at least a part of a source area is configured by a multicast broadcast single frequency network (MBSFN) sub frame.
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:
The present invention relates to a method for supporting a self-organization network and an apparatus for the same. Particularly, the method comprises the steps of: transmitting, by a first base station, a broadcasting message including a utilization of the first base station; comparing, by a second base station, the operation rate of the first base station and the operation rate of the second base station using the broadcasting message; and performing, by the second base station, turn-off if the operation rate of the second base station is lower than the operation rate of the first base station, wherein the first base station and the second base station form a cluster by means of Delaunay triangulation.
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 and device for transmitting a signal by a transmitting end in a wireless communication system supporting multiple antennas including a plurality of vertical domain antennas and a plurality of horizontal domain antennas. Specifically, the present invention comprises the steps of: pre-coding a signal for multiple antennas, using a specific pre-coding matrix selected on the basis of a first codebook for the plurality of vertical domain antennas and a second codebook for the plurality of horizontal domain antennas; and transmitting the pre-coded signal to a receiving end, wherein the specific pre-coding matrix is defined by using a Kronecker product of a first pre-coding matrix selected from the first codebook according to at least one first selection vector and a second pre-coding matrix selected from the second codebook according to at least one second selection vector.
Abstract:
A method for receiving information for interference cancellation of a user equipment (UE) includes detecting downlink control information including interference control information for a specific resource block (RB) scheduled for the UE by using an index of the specific RB, wherein the interference control information for the specific RB includes control information related to interference signal in the specific RB and indicates that the interference control information for the specific RB is the same as interference control information for one or more RBs having a series of indices subsequent to the index of the specific RB, and performing cancellation of interference signal corresponding to the interference control information in the specific RB and the one or more RBs using the interference control information for the specific RB.
Abstract:
The present invention relates to a method for feeding back channel state information with respect to downlink transmission of a terminal in a wireless communication system supporting multiple antennas. Particularly, the method comprises the steps of measuring a channel with respect to downlink transmission; and transmitting a precoding matrix indicator (PMI) to which a precoding matrix for multiple antennas is applied, on the basis of the channel measuring result, wherein the multiple antennas are defined as a group of N antenna (N>0, N is an integer), and the precoding matrix for multiple antennas is determined by a precoding matrix for the group of N antennas and a phase coefficient matrix with respect to the precoding matrix for the group of N antennas.