Abstract:
The present invention relates to a method and an apparatus for transmitting a signal of a first base station, for supporting a plurality of vertical directions in a wireless communication system which supports multiple antennas. Particularly, the method comprises the steps of: configuring a group so as to include at least one base station, among a plurality of base stations, for a first terminal having a position higher than those of the plurality of base stations; setting a specific sector for supporting coverage of the group; and determining whether to perform beamforming for the first terminal on the specific sector.
Abstract:
An embodiment of the present invention provides a method for transmitting device-to-device (D2D) data by a terminal in a wireless communication system, the method for transmitting the D2D data comprising the steps of: determining a sub-frame indicating bitmap corresponding o information indicating a time resource pattern (TRP); determining a bitmap to be applied to a sub-frame pool for transmitting data from the sub-frame indication bitmap; determining a set of sub-frames required to transmit D2D data using the bitmap to the sub-frame pool for transmitting the data; and transmitting D2D data in a sub-frame included in the set of the sub-frames.
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:
Disclosed is a method for transmission and reception of a device-to-device (D2D) signal by a terminal in a wireless communication system. The method for transmission and reception of a D2D signal, according to an embodiment of the present invention, comprises the steps of: receiving a scheduling assignment comprising a resources pattern for transmission (RPT); and receiving a D2D signal in a subframe indicated in the RPT, wherein each bit of the RPT indicates whether or not the D2D signal is permitted to be transmitted in the subframe within a scheduling assignment period, and wherein, if the number of the subframes comprised in the scheduling assignment period is greater than the number of the bits of the RPT, at least one bit of the RPT indicates whether or not the D2D signal is permitted to be transmitted in two or more subframes.
Abstract:
Disclosed is a method for reporting the channel state information for a 3-dimensional beam forming in a wireless communications system and an apparatus therefor. A method for enabling a terminal to transmit the channel state information (CSI) in a wireless communications system according to an embodiment of the present invention includes the steps of: receiving a reference signal from a base station supporting a 2-dimensional antenna array; determining the CSI by means of the reference signal; and transmitting the determined CSI to the base station. The CSI may include the CSI set for each of T (T≧1) beam candidates defined in one dimension of the 2-dimensional antenna array. The CSI set includes at least one of the rank index (RI) in the one dimension, the pre-coding matrix (PMI) index in the one dimension, the RI in the two dimensions, the PMI in the two dimensions, and the channel quality index (CQI). Here, the RI in the two dimensions is variable for each of the T beam candidates.
Abstract:
The present invention relates to a method for feeding back, by a terminal, channel status information (CSI) in a wireless communication system. In detail, the method includes the steps of feeding back a subband channel quality indication (CQI) and a subband precoding matrix index (PMI), wherein a first subband size for the subband CQI and a second subband size for the subband PMI are set differently.
Abstract:
The present invention provides a vehicle-to-X (V2X) operation method performed by a V2X terminal in a wireless communication system, the method comprising: selecting, in a selection period, a subframe excluding a subframe relating to a subframe in which transmission has been performed during a sensing period; and performing a V2X communication on the basis of the selected subframe.
Abstract:
The present invention relates to a method for transmitting a signal by a terminal in a wireless communication system supporting multiple input multiple output (MIMO), the method comprising the steps of: notifying a base station of a particular serving beam selected on the basis of a reference signal; determining reception vectors for one or more beams including the particular serving beam received from the base station; and transmitting a sounding reference signal (SRS) configured from a predetermined number of ports to the base station by applying precoding on the basis of the reception vectors.
Abstract:
The present invention relates to a wireless communication system, and specifically, provides a communication method and a device therefor, the communication method comprising: transmitting, to a terminal, an uplink grant comprising first information for changing a timing advance (TA) value; receiving, from the terminal, a first uplink signal which is based on the first information; and receiving a first downlink signal from a base station, wherein the transmission timing of the first uplink signal from the terminal is determined on the basis of the first information so that the first uplink signal and the first downlink signal may be received simultaneously at a relay node.
Abstract:
The present invention provides a vehicle-to-X (V2X) operation method performed by a V2X terminal in a wireless communication system, the method comprising: selecting, in a selection period, a subframe excluding a subframe relating to a subframe in which transmission has been performed during a sensing period; and performing a V2X communication on the basis of the selected subframe.