Method and apparatus for controlling uplink transmission power

A method for controlling, by a mobile terminal, uplink transmission power, comprising:

• transmitting an available transmission power amount of the mobile terminal to a base station;
• transmitting an uplink data channel to the base station;
• and
• receiving, from the base station, a transmit power control (TPC) determined by a difference between a target channel quality value on the basis of a first value indicating how much a path loss of the mobile terminal is compensated and the available transmission power amount and a received channel quality value for the uplink data channel.

A base station, comprising:

• a memory;
• and
• a processor connected to the memory and determining a target channel quality value corresponding to a path loss of a mobile terminal on the basis of a power headroom report (PHR) of the mobile terminal, and
• wherein the processor
• determines a transmit power control (TPC) command for the mobile terminal on the basis of a difference between a received channel quality value determined by a physical uplink shared channel (PUSCH) of the mobile terminal and the target channel quality value.