Method and apparatus for transmitting channel sounding reference signal in wireless communication system

A User Equipment (UE) for transmitting a channel Sounding Reference Signal (SRS) in a wireless communication system, comprising:

• a transceiver configured to transmit a signal to a Base Station (BS) and to receive a signal from the BS, wherein a control channel comprises information indicating whether the UE transmits the channel SRS simultaneously with an uplink data in a subframe;
• and
• a controller configured:
• to control reception of the control channel for transmitting the uplink data channel transmission from the BS,
• to determine whether aperiodic channel SRS transmission is requested in the control channel, and
• when the aperiodic channel SRS transmission is requested in the control channel and the information indicates transmitting the channel SRS simultaneously with the uplink data in the subframe, to control transmission of the uplink data through a first carrier in the subframe to the BS, and to control transmission of the channel SRS through a second carrier in the subframe to the BS simultaneously with the transmission of the uplink data,
• wherein a resource location in the subframe for the transmission of the channel SRS is determined based on the control channel.

A method for a Base Station (BS) to control transmission of a channel Sounding Reference Signal (SRS) from User Equipment (UE) in a wireless communication system, comprising:

• generating a control channel for transmitting an uplink data of the UE, wherein the control channel comprises information indicating whether the UE transmits the channel SRS simultaneously with the uplink data in a subframe;
• transmitting the generated control channel to the UE;
• when aperiodic channel SRS transmission is requested in the control channel and the information indicates transmitting the channel SRS simultaneously with the uplink data in the subframe, receiving the uplink data through a first carrier in the subframe from the UE and receiving the channel SRS through a second carrier in the subframe from the UE simultaneously with the receiving the uplink data;
• and
• measuring a channel state by using the received channel SRS,
• wherein a resource location in the subframe for the transmission of the channel SRS is determined based on the control channel.

A Base Station (BS) for controlling transmission of a channel Sounding Reference Signal (SRS) from User Equipment (UE) in a wireless communication system, comprising:

• a transceiver configured to transmit a signal to a UE and to receive a signal from the UE;
• and
• a controller configured:
• to control generation of a control channel for transmitting an uplink data of the UE, to control transmission of the generated control channel to the UE, wherein the control channel comprises information indicating whether the UE transmits the channel SRS simultaneously with the uplink data in a subframe,
• to control, when aperiodic channel SRS transmission is requested in the control channel and the information indicates transmitting the channel SRS simultaneously with the uplink data in the subframe, reception of the uplink data through a first carrier in the subframe from the UE, and reception of the channel SRS through a second carrier in the subframe from the UE simultaneously with the reception of the uplink data, and
• to control measurement of a channel state by using the received channel SRS,
• wherein a resource location in the subframe for the transmission of the channel SRS is determined based on the control channel.