Abstract: An organic light emitting diode including a first compound represented by one of Chemical Formulae 1-A to 1-D and a second compound represented by Chemical Formula 2:

Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; and a hole transport region between the first electrode and the emission layer, wherein the emission layer includes an organometallic compound of Formula 1 as described in the specification, and the hole transport region includes a first compound of Formula 2A or Formula 2B as described in the specification.

Abstract: Methods and apparatuses are provided for performing communication by a UE in a mobile communication system. A speed of the UE is measured by using an acceleration sensor in the UE. The UE determines that a change of the measured speed is detected in accordance with a predetermined criteria. The UE transmits information about the measured speed to a serving base station if the change of the measured speed is detected. Information about a target cell determined by the serving base station based on the measured speed is received from the serving base station. A handover procedure to the target cell is performed in response to receiving the information about the target cell.

Abstract: Methods and apparatuses are provided for controlling retransmission by a User Equipment (UE) in a communication system. A negative acknowledgement (NACK) is received, from a Node B, for at least one transport block among a plurality of transport blocks transmitted by the UE. A precoding matrix and a number of layers for retransmission are determined. The at least one transport block is retransmitted using the determined precoding matrix and the determined number of layers. The precoding matrix is predefined and the number of layers is equal to a number of layers corresponding to the at least one transport block, if the UE does not receive a physical downlink control channel (PDCCH) intended for the UE and a number of the at least one transport block is not equal to a number of the plurality of transport blocks.

Abstract: A method and apparatus for transmitting Channel State Information Reference Symbol (CSI-RS) and data with partial muting of the CSI-RS are proposed. The method includes determining a CSI-RS pattern to be used among CSI-RS pattern candidates, determining a muting pattern for muting some resource elements constituting CSI-RS pattern candidates except for the determined CSI-RS pattern, mapping data symbols and CSI-RS to resource elements in a resource grid with rate patching in consideration of the CSI-RS pattern and muting pattern, and transmitting the data symbols and CSI-RS to a terminal.

Abstract: An organic light emitting element and an organic light emitting display, the organic light emitting element including a first compound represented by one of Chemical Formula 1-A to Chemical Formula 1-G, and a second compound represented by Chemical Formula 2:

Abstract: The present invention proposes an apparatus and a method capable of forming M*N number of beams by a base station, which supports signal transmission/reception of the macro service area in heterogeneous networks in which a macro service area is formed with the M*N number of beams through a two-dimensional arrangement simultaneously considering the horizontal dimension and the vertical dimension and at least one small service is formed in the macro service area. To this end, at least one interference prediction beam formed to transmit signals interfering in transmission signals in at least one small service area from among the signals to be transmitted by the M*N number of beams is selected, and each of the M*N number of beams is formed in consideration of the inter-cell interference in at least one small service area due to the signals to be transmitted by at least one selected interference prediction beam.

Abstract: A method and apparatus are provided for reporting Channel State Information (CSI) in an uplink by a User Equipment (UE) in a wireless communication system. The method includes reporting a first Precoding Matrix Indicator (PMI) to an evolved Node B (eNB); calculating a second PMI using the first PMI; and reporting the second PMI to the eNB.

Abstract: A method and apparatus for transmitting/receiving reference signals in Long Term Evolution (LTE) and LTE-Advanced (LTE-A) systems includes determining whether a dedicated reference signal is detected in a current subframe; estimating, if a dedicated reference signal is detected in the current subframe, a data channel using the dedicated reference signal to receive data; and estimating, if no dedicated reference signal is detected in the current subframe, a data channel using a common reference signal detected in the current subframe to receive data. The transmission scheme uses a DeModulation Reference Signal (DM-RS) for channel response estimation. To secure backward compatibility of the LTE-A system, a Common Reference Signal is transmitted in normal subframes.

Abstract: An organic light emitting diode and an organic light emitting device, the organic light emitting diode including a first compound represented by the following Formula 1; and a second compound represented by the following Formula 2,

Abstract: An organic light-emitting device including a first electrode; a second electrode opposite to the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a first compound represented by the following Formula 1 and a second compound represented by the following Formula 2:

Abstract: An apparatus and a method for transmitting/receiving downlink data channel signal transmission information in a cellular radio communication system using a Cooperative Multi-Point (CoMP) scheme are provided. In the downlink data channel signal transmission information transmission method, a Base Station (BS) transmits downlink data channel signal transmission information including information related to Resource Elements (REs) scheduled for a downlink data channel signal transmission to a User Equipment (UE), and transmits downlink data channel signal non-transmission information including information related to REs through which a downlink data channel signal is not transmitted among the REs scheduled for the downlink data channel signal transmission to the UE.

Abstract: An organic light-emitting device including a first electrode; a second electrode; and an organic layer, the organic layer including an emission layer, a hole transport region including a hole transport layer, a hole injection layer, or a buffer layer, and an electron transport region including a hole blocking layer, an electron transport layer, or an electron injection layer, wherein a triplet energy of a hole transport material of the hole transport layer is from about 2.4 to about 3.2 eV, an electron affinity of the hole transport material is from about 2.2 to about 2.6 eV; the triplet energy of the hole transport material is greater than a triplet energy of a dopant of the emission layer and a triplet energy of a host material of the emission layer, the host material of the emission layer includes the compound represented by Formula 1.

Abstract: An organic light emitting element and an organic light emitting device, the organic light emitting element including a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2:

Abstract: An organic light-emitting device including a first electrode; a second electrode; and an organic layer, the organic layer including an emission layer, a hole transport region including a hole transport layer, a hole injection layer, or a buffer layer, and an electron transport region including a hole blocking layer, an electron transport layer, or an electron injection layer, wherein a triplet energy of a hole transport material of the hole transport layer is from about 2.4 to about 3.2 eV, an electron affinity of the hole transport material is from about 2.2 to about 2.6 eV; the triplet energy of the hole transport material is greater than a triplet energy of a dopant of the emission layer and a triplet energy of a host material of the emission layer, the host material of the emission layer includes the compound represented by Formula 1.

Abstract: An organic light emitting element and an organic light emitting device, the organic light emitting element including a first compound represented by the following Chemical Formula 1 and a second compound represented by the following Chemical Formula 2:

Abstract: An organic light-emitting device including a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes an emission layer, a hole transport region between the first electrode and the emission layer and including a hole transport layer, a hole injection layer, or a buffer layer, and an electron transport region between the emission layer and the second electrode and including an intermediate layer, a hole blocking layer, an electron transport layer, or an electron injection layer, wherein the emission layer, or at least one selected from the intermediate layer, the hole blocking layer, the electron transport layer, and the electron injection layer in the electron transport region that is adjacent to the emission layer, includes a compound represented by Formula 1, and another of the layers of the electron transport region includes a compound represented by Formula 2.

Abstract: A method and user equipment for transmitting channel state information (CSI) are provided.

Abstract: A method and user equipment for transmitting channel state information (CSI) are provided. The method includes identifying a first CSI configuration with a first index and a first information for a period and an offset; identifying a second CSI configuration with a second index and a second information for a period and an offset; and reporting a CSI for a CSI configuration with a lowest index among the first CSI configuration and the second CSI configuration, in case of collision between report of a CSI for the first CSI configuration and report of a CSI for the second CSI configuration.

Abstract: A method and user equipment for transmitting rank indicator (RI) are provided. The method includes identifying a first channel state information (CSI) configuration with a first channel measurement information and a first interference measurement information; identifying a second CSI configuration with a second channel measurement information and a second interference measurement information, wherein the first CSI information is configured as a reference CSI configuration for the second CSI configuration; transmitting a RI for the first CSI configuration; and transmitting a RI for the second CSI configuration, wherein the RI for the second CSI configuration is same as the RI for the first CSI configuration.