A method (500) and a mobile station (160) for controlling bearer assignment are described herein. In a wireless communication system (100), a core network (210) is configured to provide communication services to the mobile station (160). The mobile station (160) may detect a resource conflict associated with a communication service within the mobile station (160). Upon detecting the resource conflict, the mobile station (160) may determine a condition of the resource conflict suggesting to delay a bearer assignment for the communication service. Based on the condition of the resource conflict, the mobile station (160) may transmit a request associated with the bearer assignment to the core network (210).