Registration notification for SMS over LTE

A Short Message Service Center (SMS-C) comprising:

• a local database configured to store subscriber registration information for a mobile device based on a push notification from an apparatus including a database of subscriber registration information in response to a change in registration status of the mobile device to a broadband data network;
• a first interface configured to receive a Mobile Terminated (MT) SMS message destined for the mobile device;
• and
• a control system configured to store the MT SMS message, to identify a routing address for the mobile device over the broadband data network based on the subscriber registration information stored in the local database, and to forward the MT SMS message through the interface to the mobile device over the broadband data network based on the routing address without querying any of a Home Subscriber Server (HSS), a Home Location Register (HLR), or an Authentication, Authorization and Accounting (AAA) Server.

A method comprising:

• receiving, at a Short Message Service Center (SMS-C), a pushed notification comprising subscriber registration information from a database, the notification indicating a change in a registration status of a mobile device to a broadband data network;
• storing the subscriber registration information in the SMS-C;
• receiving a Mobile Terminated (MT) Short Message Service (SMS) message that is destined for the mobile device at the SMS-C;
• storing the MT SMS message at the SMS-C;
• identifying a routing address for the mobile device over the broadband data network based on the subscriber registration information in the SMS-C;
• and
• forwarding the MT SMS message to the mobile device over the broadband data network based on the routing address without querying a Home Subscriber Server (HSS), a Home Location Register (HLR), and an Authentication, Authorization and Accounting (AAA) Server.