1. A method by a terminal in a wireless communication system, the method comprising:transmitting, to a first base station, a first control message associated with the terminal;
receiving, from the first base station, a second control message comprising information associated with a handover from the first base station to a second base station;
performing a random access procedure to the second base station based on the information included in the second control message; and
transmitting, to the second base station, the first control message, in case that the first control message was transmitted to the first base station during a predetermined time period preceding the receiving of the second control message.