Abstract:
The present invention relates to a wireless access system supporting an unlicensed band and provides methods for performing a channel access process for transmitting different types of signals, and devices supporting the same. According to one embodiment of the present invention, a method for transmitting different types of signals in a wireless access system supporting an unlicensed band can comprise the steps of: performing a first channel process (CAP) for transmitting a first type of signal; and transmitting a transmission burst including the first type of signal through the unlicensed band if it is determined that a serving cell (SCell) of the unlicensed band is in an idle state after performing the first CAP. At this time, at least one of first parameters for performing the first CAP can be set to be value less than that of second parameters for performing a second CAP for transmitting a second type of signal.
Abstract:
The present invention relates to a wireless communication system. Specifically, the present invention relates to a method comprising: configuring a first cell group consisting of a PCell and zero or more SCells, and a second cell group consisting of SCell(s); determining transmit power of a first PUCCH to be transmitted through the PCell; and determining transmit power of a second PUCCH to be transmitted through a predetermined SCell in the second cell group, wherein the transmit powers of the first PUCCH and the second PUCCH are adjusted so that the total sum of transmit power of a terminal is not greater than the maximum transmit power of the terminal, considering a minimum guaranteed power which is assigned to each cell group according to protection priorities between cell groups, and the minimum guaranteed power assigned to each cell group is selectively applied to a specific UCI among a plurality of UCIs.
Abstract:
Disclosed is a method for allocating resource in a wireless communication system includes: allocating, by a base station (BS), an uplink resource region for transmission of uplink control information (UCI) of a user equipment (UE) to the UE, the UCI being information related to multiple downlink cells; and receiving the UCI from the UE through the allocated uplink resource region on at least one uplink cell.
Abstract:
In a method for performing, by a rank-restricted terminal, a downlink channel-related feedback in a wireless communication system according to an embodiment of the present invention, the method includes the steps of: measuring a downlink channel; and feeding back information for improving a coverage on the basis of the measured downlink channel value, wherein the information for improving the coverage may include a repetition level indicator for improving the coverage.
Abstract:
A method for transmitting uplink control information in a wireless communication system according to an embodiment of the present invention, which is performed by a terminal, may comprise the steps of: determining the number of coded symbols according to the payload size of uplink control information to be transmitted; and mapping the uplink control information to an uplink resource according to the determined number of the coded symbols, wherein the number of the coded symbols is determined using a parameter selected according to the payload size of the uplink control information to be transmitted.
Abstract:
Disclosed are a method and apparatus for transmitting an uplink channel in a wireless communication system. A method for transmitting an uplink channel in a wireless communication system supporting an sTTI is performed by a terminal incapable of the simultaneous transmission of a first uplink channel and a second uplink channel, and includes when a first uplink channel region at a first sTTI overlaps a specific symbol included in a second uplink channel region at a second sTTI, transmitting the first uplink channel to a base station using at least one of a plurality of symbols included in the first uplink channel region symbol other than the specific symbol at the first sTTI and transmitting the second uplink channel to the base station using at least one symbol included in the second uplink channel region at the second sTTI. The specific symbol includes a symbol to which a DMRS related to the second uplink channel is mapped.
Abstract:
Disclosed are a method and an apparatus for transmitting and receiving data. A method for transmitting an uplink comprises the steps of: a terminal receiving first downlink data from a first cell through a first subframe; the terminal receiving second downlink data from a second cell through the first subframe; the terminal transmitting first uplink data, which is generated based on a first identifier of the first cell, as a reply to the first downlink data through a second subframe, and the terminal transmitting second uplink data, which is generated based on a second identifier of a second cell, as a reply to the second downlink data through the second subframe.
Abstract:
A disclosure of the present specification provides a method in a user equipment (UE). The method may comprise the steps of: activating a second cell when a request message for activation of the second cell by carrier aggregation is received from a first cell of one base station; receiving, from the one base station, a message including a configuration for switching to dual connectivity; and maintaining, without change, and using a configuration used for the second cell by the carrier aggregation after the switching to the dual connectivity.
Abstract:
One disclosure of the present application provides a method for receiving downlink data in a wireless communication system supporting 256 QAM. The method for receiving downlink data in a wireless communication system supporting 256 QAM comprises the steps of: receiving setting information for power back-off; receiving downlink data transmitted on the basis of the setting information for power back-off; and demodulating the downlink data received on the basis of the setting information for power back-off, wherein the setting information for power back-off is information related to at least one of whether to apply the power back-off, a reduced amount of power of the downlink data by the power back-off, a frame index to which the power back-off is applied, a subframe index and a resource to which the power back-off is applied.
Abstract:
One disclosure of the present specification provides a method for operating a HARQ from user equipment (UE). The method comprises the steps of: the UE receiving downlink data from each cell, when at least one TDD-based cell and at least one FDD based cell are established according to carrier aggregation (CA), a specific TDD-based cell is established as a primary cell of the carrier aggregation (CA), and the at least one FDD-based cell is established as a secondary cell of the carrier aggregation (CA); the UE confirming a PUCCH format to be used for transmitting a HARQ ACK/NACK for the downlink data; and the UE determining the number of bits for transmitting the HARQ ACK/NACK when use of the specific PUCCH format for transmitting the HARQ ACK/NACK is confirmed.