The present disclosure relates to a communication scheme for the convergence of a 5G communication system for supporting a higher data transfer rate after the 4G system and the IoT technology and a system thereof. A method for performing a scheduling request (SR) is provided. The method performed by a user equipment (UE) comprises receiving, from a base station, first information on a mapping relation between an SR configuration and a logical channel (LCH), receiving, from the base station, second information on a condition for initiating a regular buffer status report (BSR) transmission procedure regardless of priority, and transmitting, to the base station, the SR based on the first information and the second information.