Method and device for transmitting signal in wireless communication system

A method by a base station for controlling an uplink transmission power of a terminal in a wireless communication system, the method comprising:

• transmitting, to the terminal, information on a repetition level for a coverage enhancement mode, the coverage enhancement mode including a coverage enhancement mode A (CE mode A) or a coverage enhancement mode B (CE mode B);
• and
• receiving, from the terminal, data or control information through a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) on a plurality of subframes with the uplink transmission power,
• wherein the uplink transmission power corresponds to a first subframe of the plurality of subframes,
• wherein the uplink transmission power is set using a maximum uplink transmission power of the terminal corresponding to the first subframe, a path-loss between the base station and the terminal, and a power control adjustment value corresponding to the first subframe, in response to the information on the repetition level indicating the CE mode A,
• wherein the uplink transmission power is set as the maximum uplink transmission power of the terminal corresponding to the first subframe, in response to the information on the repetition level indicating the CE mode B, and
• wherein the uplink transmission power of the terminal is maintained in the plurality of subframes.

A terminal for controlling an uplink transmission power of a terminal in a wireless communication system, the terminal comprising:

• a controller configured to:
• identify whether a coverage enhancement mode of the terminal is a coverage enhancement mode A (CE mode A) or a coverage enhancement mode B (CE mode B),
• identify an uplink transmission power corresponding to a first subframe of a plurality of subframes using a maximum uplink transmission power of the terminal corresponding to the first subframe, a path-loss between the terminal and a base station, and a power control adjustment value corresponding to the first subframe if the coverage enhancement mode of the terminal is the CE mode A,
• identify the maximum uplink transmission power of the terminal corresponding to the first subframe as the uplink transmission power corresponding to the first subframe if the coverage enhancement mode of the terminal is the CE mode B, and
• transmit data or control information through a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) on the plurality of subframes with the identified uplink transmission power,
• wherein the identified uplink transmission power is maintained in the plurality of subframes.

A base station for controlling an uplink transmission power of a terminal in a wireless communication system, the base station comprising:

• a transceiver;
• and
• a controller configured to:
• transmit, to the terminal, information on a repetition level for a coverage enhancement mode, the coverage enhancement mode including a coverage enhancement mode A (CE mode A) or a coverage enhancement mode B (CE mode B),
• receive, from the terminal, data or control information through a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) on a plurality of subframes with the uplink transmission power,
• wherein the uplink transmission power corresponds to a first subframe of the plurality of subframes,
• wherein the uplink transmission power is set using a maximum uplink transmission power of the terminal corresponding to the first subframe, a path-loss between a serving cell and the terminal, and a power control adjustment value corresponding to the first subframe if the coverage enhancement mode is the CE mode A,
• wherein the uplink transmission power is set as the maximum uplink transmission power of the terminal corresponding to the first subframe if the coverage enhancement mode is the CE mode B, and
• wherein the uplink transmission power of the terminal is maintained on the plurality of subframes.