SMS processing method, Internet of Things management network element and terminal device in Internet of Things

摘要

The present invention discloses an SMS processing method, a mobility management network element, and a terminal device in the Internet of Things to provide an SMS service to the Internet of Things device. The method comprises receiving, by the mobility management network element of the packet switched (PS) domain, a non-combined registration request from a terminal device, the non-combined registration request is used to implement registration of the terminal device in the PS domain, and an SMS-only indication And, when the mobility management network element of the PS domain determines that SMS cannot be transmitted to the terminal device through the PS domain, the location update request is sent to the circuit switched (CS) domain by the mobility management network element of the PS domain. And transmitting to the mobility management network element of-where the location update request is used to implement registration of the terminal device in the CS domain.