Patent ID: 11876866
Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A communication system for assisting an unregistered user device to access an end-to-end call service of a private network, comprising:
a mobile edge computing server, configured to:
determine whether the user device that is not registered on the private network wants to initiate an emergency-call request; and
in response to determining that the user device that is not registered on the private network wants to initiate the emergency call, assist the user device to access the end-to-end call service without being registered on the private network, comprising:
obtaining at least one preset service device corresponding to the end-to-end call service through a private service module corresponding to the end-to-end call service, wherein each of the at least one preset service device has been registered on the private network;
selecting a specific service device from the at least one preset service device through the private service module, and request a policy control function entity of the private network to send a call-service request to the specific service device through a policy/charging rule module of the mobile edge computing server, wherein the specific service device sends a call-service response in response to the call-service request; and
in response to the call-service response, triggering the private service module through the policy/charging rule module to assist the user device in performing an end-to-end call with the specific service device.