Abstract:
The present invention relates to a method and apparatus for aggregating carriers in wireless communication systems. In the method, a first carrier is set up, and a second carrier is added in addition to the first carrier. In addition, the first carrier is a time division duplex (TDD) carrier for which an uplink subframe and a downlink subframe are positioned at different times in a frame, and the second carrier is a carrier only for a downlink that consists of downlink subframes.
Abstract:
The present specification provides a method and UE for receiving configuration usable for a discovery, which can be used in a small cell scenario. In detail, the UE is configured for receiving measurement configuration for a discovery signal, wherein the discovery signal includes CRS, PSS, and SSS. The discovery may further include a channel status information-reference signal (CSI-RS) depending on a configuration of the CSI-RS. The measurement configuration may include at least one set of configuration elements. The UE performs a measurement on the discovery signal based on the received configuration. Further, the UE receives channel status information-reference signal (CSI-RS) configuration including at least one set of CSI-RS configuration elements used for a zero power CSI-RS, wherein the CSI-RS configuration includes at least one set of CSI-RS configuration elements, each set of CSI-RS configuration elements includes CSI-RS interval information and CSI-RS offset information.
Abstract:
Provided are a data receiving method supporting an expansion modulation scheme and a wireless device using the same. The wireless device receives expansion sub-frame information indicating at least one expansion sub-frame supporting the expansion modulation scheme among a plurality of sub-frames and receives downlink data according to the expansion sub-frame information.
Abstract:
A method for detecting a discovery signal in a wireless communication system and a device for same are disclosed. In particular, the method whereby a terminal receives a discovery signal in a wireless communication system comprises the steps of: receiving discovery quasi co-located (QCL) type configuration information for configuring a discovery QCL type; detecting a synchronization signal and obtaining a first scrambling identity (SCID); and detecting the discovery signal by using the first SCID on the basis of the configured discovery QCL type, wherein a QCL relationship between an antenna port for the discovery signal and an antenna port for the synchronization signal can be established in relation to a large-scale channel property according to the discovery QCL type.
Abstract:
The present invention relates to a method for performing a random access procedure in a wireless communication system supporting repeated transmission of a same signal, and an apparatus for same, and more specifically, to a method and an apparatus for same, the method comprising the steps of: repeatedly transmitting a physical random access channel (PRACH) signal by using a PRACH resource; and receiving a random access response signal from a specific time section, as a response to the PRACH signal, wherein the random access response signal includes information related to the number of repeated transmissions of the PRACH signal.
Abstract:
The method of transmitting the reference signal includes receiving a synchronization signal in a subframe including contiguous first slot and second slot, and receiving a reference signal in the subframe, in which each of the first slot and the second slot includes a plurality of RBs and a plurality of OFDM symbols, the synchronization signal includes a PSS and a SSS, the PSS is received in the last OFDM symbol of the first slot, the SSS is received in a previous symbol before the last OFDM symbol of the first slot, a cell identifier is acquired based on the PSS and the SSS, the synchronization signal is received in center 6 RBs among the plurality of RBs, and the reference signal is received in at least one 01-DM symbol among the plurality of OFDM symbols in the second slot through the center 6 RBs.
Abstract:
The present invention relates to a method and an apparatus for transmitting uplink signals to a plurality of transmission points in a wireless communication system, comprising: receiving information on at least one parameter set group through upper layer signaling, wherein each of the at least one parameter set group includes a plurality of parameter sets; detecting a physical downlink control channel (PDCCH) comprising indication information for indicating specific parameter sets which belong to one of the parameter set groups from among the at least one parameter set group; and transmitting a physical uplink shared channel (PUSCH) by using the specific parameter set, wherein each of the plurality of parameter sets includes information on a power control parameter and information on timing advance (TA) for transmitting the PUSCH signal.
Abstract:
In the present invention, a demodulation reference signal is transmitted using a plurality of settings in which demodulation reference signals occupy different positions in at least a density or time-frequency resource region of the demodulation reference signals. A base station can transmit, to the user device, information indicating a setting related to a downlink signal or a setting related to an uplink signal from among the plurality of settings, and the user device can receive the demodulation reference signal with the downlink signal or transmit the demodulation reference signal With the uplink signal according to the indicated setting.
Abstract:
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for a terminal to receive a downlink signal in a wireless communication system. The method includes the steps of: receiving a downlink signal through a downlink period in a subframe including the downlink period, a gap period, and an uplink period; and demodulating the downlink signal, wherein the length of the downlink period is less than or equal to half of the subframe. When the downlink signal is received on a first type of carrier, the downlink signal is demodulated using a first cell-common reference signal. When the downlink signal is received on a second type of carrier, the downlink signal is demodulated using a terminal-specific reference signal.
Abstract:
A method for receiving downlink data in a wireless communication system is provided. A user equipment receives downlink control information via a downlink control channel in a subframe. The downlink control information includes reference signal (RS) information and physical downlink shared channel (PDSCH) information. The RS information indicates transmission antenna ports, a scrambling identity and a number of transmission layers. The user equipment receives a RS for demodulating a PDSCH based on the RS information in the subframe. The RS is generated based on the scrambling identity. The user equipment receives downlink data via the PDSCH in the subframe. Resource element (RE) mapping information on REs assigned for the PDSCH is determined based on the PDSCH information.