| 摘要 |
A method is provided that includes causing transmission of a first mobility management (MM) message from a UE to a core network including packet-switched (PS) and circuit-switched (CS) domains. The method may include causing transmission of the first MM message to a PS-domain component, and receiving a rejection message from the PS-domain component in response thereto. The rejection message indicates congestion as a cause for rejection of the first MM message. In response to receipt of the rejection message, the method may include running a back-off timer. While the back-off timer is running in an instance in which the rejection message indicates that circuit-switched services are permitted, the method may include causing transmission of a second MM message from the UE to a CS-domain component. A corresponding apparatus and computer-readable storage medium are also provided. |
