Abstract:
The present invention relates to a method for a terminal, which operates in a half-duplex manner, to communicate with a base station in a wireless communication system supporting a plurality of carrier types, and an apparatus for the same. More particularly, the present invention relates to a method and an apparatus for the same, the method comprising the step of: transmitting a signal to, or receiving a signal from, a base station in a first cell set to be in a time division duplex (TDD) manner via a first subframe positioned between a downlink subframe and an uplink subframe, wherein if the first cell operates as a first carrier type, the first subframe includes a first downlink section, a first protection section, and a first uplink section, and if the first cell operates as a second carrier type, the first subframe includes only a second downlink section and a second protection section, or includes only a second uplink section and the second protection section. The first carrier type represents a carrier type in which a cell-common reference signal is transmitted over the entire system band in all subframes, and the second carrier type represents a carrier type in which the cell-common reference signal is transmitted over at least a part of the system band in some subframes.
Abstract:
The present invention relates to a method in which a user equipment (UE) receives a signal in a time division duplex (TDD) wireless communication system and an apparatus for the same. More particularly, the present invention relates to a method comprising the steps of: receiving a first downlink signal in a first subframe including a downlink interval, a protection interval, and an uplink interval; and demodulating the first downlink signal, wherein the first downlink signal is demodulated using a cell-common reference signal when the downlink interval includes a predetermined number of symbols or less, and the first downlink signal is demodulated using a UE-specific reference signal when the downlink interval includes the predetermined number of symbols or more, and an apparatus for the same.
Abstract:
One embodiment of the present specification discloses a method for transmitting uplink control information (UCI). The method may be performed by a terminal and comprise receiving control information for setting such that an uplink control channel and an uplink shared channel are not simultaneously transmitted on one uplink subframe; selecting one of the channels, if first uplink control information (UCI) for a first cell and second uplink control information (UCI) for a second cell are requested to be simultaneously transmitted on the one uplink subframe through the uplink control channel in case of the first uplink control information (UCI) and through the uplink shared channel in case of the second uplink control information (UCI); and transmitting at least one from among the first uplink control information (UCI) and the second uplink control information (UCI) on the uplink subframe through the selected channel.
Abstract:
The present invention relates to a wireless communication system. Particularly, the present invention relates to a method for transmitting an uplink signal in a wireless communication system and a device therefor, the method comprising the step of transmitting the uplink signal through a plurality of SC-FDMA symbols within a subframe, wherein: the uplink signal includes RI and HARQ-ACK information; the plurality of SC-FDMA symbols include an SC-FDMA symbol #n for an RS, an SC-FDMA symbol of a first set for the RI, and an SC-FDMA symbol of a second set for the HARQ-ACK; n is an integer of 0 or more; the SC-FDMA symbol of the first set includes SC-FDMA symbols #n−2, #n+2, #n+5 and #n+6; and the SC-FDMA symbol of the second set includes SC-FDMA symbols #n−1, #n+1, #n+3 and #n+4.
Abstract:
According to the present invention, a common reference signal is transmitted in a subframe configured to receive the common reference signal and/or a fixed subframe predefined to receive the common reference signal, from among a plurality of subframes within a frame. In the present invention, the common reference signal is transmitted in every subframe within a legacy frame duration. However, the common reference signal is transmitted in said configured subframe and/or said fixed subframe within a frame duration which is not a legacy frame duration.
Abstract:
The present invention relates to a method for transmitting and receiving an uplink signal for low-cost machine-type communication (MTC) used in a wireless communication system, and the apparatuses for supporting same. The base station of the present invention sets a maximum number of RBs capable of being allocated to the MTC device to be smaller than the total number of RBs in a system band supported by the base station. The MTC device of the present invention transmits an uplink signal through a physical uplink shared channel (PUSCH) on the basis of the maximum number of RBs capable of being allocated to the MTC device.
Abstract:
The present invention relates to a method for random access to a small cell by means of a terminal. The method can include the steps of: receiving a plurality of settings for a random access preamble; selecting one of the plurality of settings; and transmitting the random access preamble according to the one selected setting. Here, a resource on which the random access preamble can be transmitted can be provided in plurality in one subframe, and the preamble transmitted on each resource is distinguishable.
Abstract:
The present invention relates to a method and a device for aggregating carriers in a wireless communication system. In the method, a first carrier is configured, and a second carrier is configured in addition to the first carrier. 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 an uplink, which consists of uplink subframes.
Abstract:
The present invention relates to a method and apparatus for transmitting sounding reference signals in wireless communication systems. The method includes the steps of: receiving sounding reference signal (SRS) setting information indicating an SRS transmitting scheme for an uplink carrier; and transmitting the SRS in the SRS transmitting scheme determined on the basis of the SRS setting information, wherein the SRS transmitting scheme is intended for transmitting the SRS in all of the bands of the uplink carrier, or in some of the bands of the uplink carrier.
Abstract:
Disclosed are a method and an apparatus for setting a reference signal. A wireless apparatus receives a primary synchronization signal (PSS) transmitted by a first orthogonal frequency division multiplexing (OFDM) symbol and a secondary synchronization signal (SSS) from a second OFDM symbol, and can search information for setting a reference signal on the basis of symbol numbers of the first OFDM symbol and the second OFDM symbol. Inter-cell interference can be reduced by means of a variety of methods for setting a reference signal.