Method, device and system for performing wireless communication in wireless communication system

A wireless communication method comprising:

• performing communication, using a processor, with a first node and a second node based on carrier aggregation, said communication including:
• setting a downlink component carrier associated with the first node as a downlink primary component carrier, and
• setting an uplink component carrier associated with the second node as an uplink primary component carrier for transmitting Physical Uplink Control Channel (PUCCH),
• wherein the communication includes transmitting an uplink control signaling via the uplink primary component carrier associated with the second node.

A wireless communication device for controlling uplink transmission power for Coordinate Multi-Point (CoMP) transmission of a first node and a second node on a first component carrier at a first frequency, the device comprising:

• circuitry configured to
• receive a downlink signal from the second node on a second component carrier at a second frequency different from the first frequency,
• determine a first downlink path loss associated with receipt of the downlink signal from the second node on the second component carrier at the second frequency,
• estimate a second downlink path loss associated with the second node performing the CoMP transmission on the first component carrier at the first frequency based on the determined first downlink path loss, and
• estimate a first uplink path loss of a first uplink signal output from the device to the second node on the first component carrier at the first frequency based on the estimated second downlink path loss, to compensate uplink signal transmission power for the CoMP transmission.

A wireless communication method for controlling uplink transmission power for Coordinate Multi-Point (CoMP) transmission of a first node and a second node on a first component carrier at a first frequency, the method comprising:

• receiving a downlink signal from the second node on a second component carrier at a second frequency different from the first frequency,
• determining a first downlink path loss associated with receipt of the downlink signal from the second node on the second component carrier at the second frequency,
• estimating a second downlink path loss associated with the second node performing the CoMP transmission on the first component carrier at the first frequency based on the determined first downlink path loss, and
• estimating a first uplink path loss of a first uplink signal output from the device to the second node on the first component carrier at the first frequency based on the estimated second downlink path loss, to compensate uplink signal transmission power for the CoMP transmission.