Abstract:
A disclosure of the present specification provides a method for transmitting a physical uplink control channel (PUCCH) by a terminal. The method may comprise the steps of: receiving multiple pieces of explicit configuration information on a PUCCH resource through higher layer signaling when a PUCCH should be repeatedly transmitted on a plurality of sub-frames; determining a PUCCH resource to which the PUCCH is transmitted, on the basis of the multiple pieces of the explicit configuration information; and repeatedly transmitting, onto the determined PUCCH resource, the PUCCH on the plurality of sub-frames, wherein the PUCCH resource to which the PUCCH is transmitted is determined on the basis of one of a PDCCH, an EPDCCH, and an identification (ID) of the terminal, which have been received previously.
Abstract:
A method and apparatus for transmitting/receiving a downlink channel in a wireless communication system are provided. A downlink control channel and a downlink data channel corresponding to the downlink control channel are transmitted/received within a transmission time interval (TTI). A reference signal (RS) of an antenna port used for transmission of both the downlink control channel and the downlink data channel is transmitted/received on an OFDM symbol with the downlink control channel, and an RS of an antenna port used only for transmission of the downlink data channel is transmitted in the remaining OFDM symbol(s) of the TTI.
Abstract:
The present specification discloses a method for transmitting a demodulation reference signal (DMRS) for uplink data demodulation by a machine type communication (MTC) device which is configured to operate in only a part of the system band of a cell. The method may comprise the steps of: mapping a DMRS sequence to 12 sub-carriers of a physical resource block (PRB); and dividing the PRB, to which the DMRS is mapped, into N sub-PRBs. Here, each of the sub-PRBs may comprise 12/N sub-carriers to which the DMRS is mapped. The method may further comprise a step for transmitting the N sub-PRBs to a base station in N sub-frames.
Abstract:
The present invention relates to a wireless communication system. The present invention relates more particularly to a method and an apparatus for receiving a downlink signal by a device in a wireless communication system, the method comprising the steps of: receiving from a subframe a first PDCCH comprising scheduling information about first common data; receiving from the subframe a second PDCCH comprising scheduling information about second common data; and, on the basis of Ta, a TB size of the first common data and Tb, a TB size of the second common data, controlling a procedure for receiving downlink data from the subframe, wherein if T1
Abstract:
One disclosure of the present specification provides a method for receiving EPDCCH by an MTC device. The method comprises: a step for determining a first search space and a second search space for receiving EPDCCH on a first subframe and a second subframe, respectively, from among N-number of subframes, if a bundle of EPDCCHs in which the same EPDCCH is repeated on the N-number of subframes should be received, wherein each of the first and second search spaces is determined on the basis of the number of EPDCCH candidates, and determined by any one of a first case, a second case and a third case classified on the basis of a DCI format and whether a CP being used is a normal CP or an extended CP; and a step for decoding the EPDCCH in the second search space if the cases for determining the first search space and the second search space are the same.
Abstract:
A disclosure of the present specification provides a method for performing a cell search procedure or a cell discovery procedure in which a discovery signal is transmitted to a resource element determined in consideration of interference between adjacent cells. The method comprises the steps of: receiving a discovery signal generated by a particular small cell; and searching for the particular small cell on the basis of the discovery signal, wherein the position of the resource element to which the discovery signal is transmitted may be changed according to time.
Abstract:
This application is related to method and apparatus for wireless communication. An example of the method in this application comprises monitoring downlink control channel in a search space, receiving signals on a downlink channel repeating in a unit of a subframe group, based on monitored downlink control channel and transmitting signals on a uplink channel based on the received signal on the downlink channel
Abstract:
In one aspect, the present specification discloses a transmission/reception method in a machine type communication (MTC) apparatus. The transmission/reception method for the MTC apparatus may comprise the steps of: receiving information about the specific number of a bundle of downlink control channels which are receivable on a plurality of downlink subframes; and determining the location of the downlink subframe in which the specific-number bundle of downlink control channels can finish reception in accordance with time division duplex (TDD) uplink/downlink setting. Here, when the reception about the bundle of downlink control channels is not finished at the location of the determined downlink subframe, it can be assumed that the reception of the bundle of downlink control channels will continue up to the location of the fastest downlink subframe in which the specific-number bundle of downlink control channels can finish reception among the subframes according to the TDD method.
Abstract:
According to one disclosure of the present specification, when a machine type communication (MTC) device is located in a coverage-expanded area of a base station, the MTC device repeatedly receives system information (for example, system information blocks (SIBs) of a first type) on several subframes and then combines and decodes the received SIBs, thereby improving a decoding success rate.
Abstract:
The present invention provides a method and user equipment for transmitting an uplink signal capable of enhancing coverage while conserving energy by separating a cell for receiving a downlink from a cell for transmitting an uplink.