Method and apparatus for controlling uplink transmission power in wireless communication system

A base station comprising:

• a transceiver configured to transmit and receive signals;
• and
• a controller configured to generate information on a priority and to transmit the information on the priority to a terminal using higher layer signaling,
• wherein data is transmitted and received in a unit of a first transmission time interval (TTI) between the terminal and the base station,
• wherein data is transmitted and received in a unit of a second transmission time interval (TTI) between the terminal and another base station, and
• wherein the information on the priority is used by the terminal to control an uplink transmission power according to the priority in the unit of at least one of the first TTI and the second TTI.

A control method of a terminal, comprising:

• determining an uplink transmission power for a first network transmitting and receiving data in a unit of a first transmission time interval (TTI) and a second network transmitting and receiving data in a unit of a second transmission time interval (TTI);
• and
• transmitting an uplink signal to at least one of the first network and the second network based on the determined uplink transmission power,
• wherein the control of the uplink transmission power is performed according to respective a TTI length of the first network and a TTI length of the second network.

A control method of a base station, comprising:

• generating information on a priority;
• and
• transmitting the information on the priority to a terminal using higher layer signaling,
• wherein data is transmitted and received in a unit of a first transmission time interval (TTI) between the terminal and the base station,
• wherein data is transmitted and received in a unit of a second transmission time interval (TTI) between the terminal and another base station, and
• wherein the information on the priority is used by the terminal to control an uplink transmission power according to the priority in the unit of at least one of the first TTI and the second TTI.