Method for transmitting/receiving uplink data, and device therefor

The present specification relates to a wireless communication system and, particularly, to a method for controlling the power of a terminal, and a device therefor, the method comprising: receiving, from a serving cell, serving cell-related transmission power information and adjacent cell-related interference information; and determining uplink transmission power on the basis of the serving cell-related transmission power information and the adjacent cell-related interference information, wherein the uplink transmission power is determined on the basis of a minimal value from among (1) maximum transmission power of a terminal, (2) transmission power based on the serving cell-related transmission power information, and (3) maximum allowable interference power based on the adjacent cell-related interference information, and an uplink signal is transmitted to the serving cell on the basis of the uplink transmission power. The terminal communicates with at least one from among a mobile terminal, a network, and an autonomous vehicle excluding a vehicle that includes the terminal.