The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for a terminal controlling uplink power in a carrier aggregation-based wireless communication system, comprising the steps of: configuring a first cell and a second cell; transmitting a first PUCCH signal from subframe #n in the first cell; and transmitting a second PUCCH signal from subframe #n in the second cell, wherein when the sum of transmit power of the first PUCCH signal and transmit power of the second PUCCHJ signal exceeds a predetermined maximum transmit power configured to the terminal, the transmit power of the PUCCH signal having a lower priority from among the first UCCH signal and the second PUCCH signal is reduced or the transmission is dropped.

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for a terminal controlling uplink power in a carrier aggregation-based wireless communication system, comprising the steps of: configuring a first cell and a second cell; transmitting a first PUCCH signal from subframe #n in the first cell; and transmitting a second PUCCH signal from subframe #n in the second cell, wherein when the sum of transmit power of the first PUCCH signal and transmit power of the second PUCCHJ signal exceeds a predetermined maximum transmit power configured to the terminal, the transmit power of the PUCCH signal having a lower priority from among the first UCCH signal and the second PUCCH signal is reduced or the transmission is dropped.

Embodiments of the present disclosure provide methods and apparatus for power control in random access procedure. A method implemented at a terminal device comprises obtaining at least one power control parameter to be used for a request message for a contention free random access, CFRA. The method further comprises transmitting, to a network node, the request message for the CFRA. A power of the request message for the CFRA is controlled based on the at least one power control parameter. The request message comprises: a random access channel, RACH, preamble and a physical uplink shared channel, PUSCH.

A terminal according to one aspect of the present disclosure includes a control section that, when spatial relation information for uplink transmission, of any one of a physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH) scheduled by downlink control information (DCI) format 0_1 is not configured, determines a power control parameter for the uplink transmission to determine transmit power for the uplink transmission on the basis of the power control parameter, and a transmitting section that performs the uplink transmission by using the transmit power. According to one aspect of the present disclosure, it is possible to appropriately transmit UL transmission.

Provided is a terminal which can suitably transmit an uplink signal. In a terminal (100), a PC parameter control unit (104) sets a first power control parameter corresponding to a first service, when a prescribed condition relating to a control channel used for transmission of uplink signal allocation is met, and sets a second power control parameter corresponding to a second service, when the prescribed condition is not met. A transmission unit (109) transmits the uplink signal by using transmission power calculated by using the first power control parameter or the second power control parameter.

Methods and apparatuses for transmission of power control command are disclosed. In one embodiment, a method at a UE comprises receiving two or more TPC commands for PUCCH resources of the UE in a cell, each PUCCH resource is associated with a higher layer index value configured for a CORESET, determining a TPC command for each PUCCH resource according to the higher layer index value; and transmitting each PUCCH resource using the power according to the determined TPC command.

Methods and apparatuses for transmission of power control command are disclosed. In one embodiment, a method at a UE comprises receiving two or more TPC commands for PUCCH resources of the UE in a cell, each PUCCH resource is associated with a higher layer index value configured for a CORESET, determining a TPC command for each PUCCH resource according to the higher layer index value; and transmitting each PUCCH resource using the power according to the determined TPC command.

A method and apparatus are disclosed from the perspective of a User Equipment (UE) in a wireless communication system. In one embodiment, the UE receives a configuration for a first set of power control information and a second set of power control information. The UE also receives a Downlink Control Information (DCI) scheduling one or more Physical Uplink Shared Channels (PUSCHs), wherein the DCI comprises a first Sounding Reference Signal Resource Indicator (SRI) field and a second SRI field, size of the first SRI field is larger than size of the second SRI field, and the first SRI field indicates a number of layers, and wherein the DCI comprises a specific field indicating that the first SRI field is associated with the first set of power control information and the second SRI field is associated with the second set of power control information.

In one aspect, a method performed by a user equipment (UE) in a communication network includes: receiving, in a downlink control information (DCI), from a base station, at least one indication, wherein each of the at least one indication indicates that uplink transmission by the UE should be cancelled or paused, and includes a combination of at least one bit representing at least one resource configuration for the uplink transmission; and cancelling or pausing respective uplink transmission in dependence on the at least one resource configuration represented by one of the at least one indication.

Disclosed is a method for determining transmit power in a wireless communication system according to one embodiment of the present invention. The method, which is performed by a terminal, comprises the steps of: receiving a semi-persistent scheduling (SPS) setting of a short transmission time interval (sTTI); receiving control information for SPS-related transmit power control according to the received setting; and determining an SPS-related transmit power by using a transmit power control (TPC) command included in the received control information, wherein the control information may include a TPC command for each of a plurality of TTI lengths, which includes an SPS-related TPC command of the sTTI.