Method for transmitting an uplink signal in a wireless communication system, and apparatus for same

A base station for receiving a sounding reference signal (SRS) in a wireless communication system, the base station comprising:

• a transmitter configured to transmit, to a user equipment, a physical downlink control channel (PDCCH) including a carrier indicator field (CIF) and an SRS field via a first component carrier (CC) among a plurality of CCs including the first CC and one or more second CCs, the CIF indicating a specific CC of the one or more second CCs and the SRS field indicating whether the user equipment has to transmit the SRS via the specific CC indicated by the CIF;
• a receiver configured to receive, from the user equipment, the SRS on an uplink subframe via the specific CC indicated by the CIF when the SRS field is enabled;
• and
• a processor configured to control the transmitter and the receiver,
• wherein the transmitter transmits, to the user equipment, a first medium access control (MAC) information including a bitmap in which a bit corresponding to the specific CC is disabled for deactivating the specific CC among the one or more second CCs, and wherein an SRS transmission is not performed on the deactivated specific CC.

A method of transmitting a sounding reference signal (SRS) by a user equipment in a wireless communication system, the method comprising:

• receiving, from a base station, a physical downlink control channel (PDCCH) including a carrier indicator field (CIF) and an SRS field via a first component carrier (CC) among a plurality of CCs including the first CC and one or more second CCs, the CIF indicating a specific CC of the one or more second CCs and the SRS field indicating whether the user equipment has to transmit the SRS via the specific CC indicated by the CIF;
• transmitting, to the base station, the SRS on an uplink subframe via the specific CC indicated by the CIF when the SRS field is enabled;
• and
• receiving, from the base station, a first medium access control (MAC) information including a bitmap in which a bit corresponding to a specific CC is disabled for deactivating the specific CC among the one or more second CCs,
• wherein an SRS transmission is not performed on the deactivated specific CC.

A user equipment for transmitting a sounding reference signal (SRS) in a wireless communication system, the user equipment comprising:

• a receiver configured to receive, from a base station, a physical downlink control channel (PDCCH) including a carrier indicator field (CIF) and an SRS field via a first component carrier (CC) among a plurality of CCs including the first CC and one or more second CCs, the CIF indicating a specific CC of the one or more second CCs and the SRS field indicating whether the user equipment has to transmit the SRS via the specific CC indicated by the CIF;
• a transmitter configured to transmit, to the base station, the SRS on an uplink subframe via the specific CC indicated by the CIF when the SRS field is enabled;
• and
• a processor configured to control the transmitter and the receiver,
• wherein the receiver receives, from the base station, a first medium access control (MAC) information including a bitmap in which a bit corresponding to a specific CC is disabled for deactivating the specific CC among the one or more second CCs, and
• wherein an SRS transmission is not performed on the deactivated specific CC.