Methods, systems, and computer readable media for utilizing a diameter proxy agent to communicate short message service (SMS) messages

A method for utilizing a Diameter proxy agent to communicate SMS messages in a Diameter network, the method comprising:

• at a Diameter proxy agent located in a home network:
• receiving, from a mobility management entity (MME) via a Diameter interface, a mobile originated-forward short message (MO-FSM) message directed to a short message service (SMS) service center located in the home network, wherein the MO-FSM message is originated from a sending mobile subscriber;
• querying a local database to determine if the SMS service center is located in the home network;
• if the SMS service center is located in the home network, querying a number portability database to determine whether the sending mobile subscriber has been ported to a foreign network or is otherwise not a subscriber to the home network;
• in response to determining the sending mobile subscriber is not a subscriber to the home network, sending an error message to the sending mobile subscriber;
• and
• in response to determining the sending mobile subscriber is a subscriber to the home network, forwarding the MO-FSM message to the SMS service center associated with the home network.

A non-transitory computer readable medium having stored thereon executable instructions that when executed by the processor of a computer control the computer to perform steps comprising:

• at a Diameter proxy agent located in a first network:
• receiving, from an SMS service center via a Diameter interface, a mobile subscriber location information request message directed to a home subscriber server (HSS), wherein the mobile subscriber location information request message is associated with a recipient mobile subscriber;
• querying a number portability database to determine whether the recipient mobile subscriber has been ported to a foreign network or ported into the first network;
• in response to determining the recipient mobile subscriber has been ported to the foreign network or is owned by the foreign network, forwarding the mobile subscriber location information request message to the foreign network;
• and
• in response to determining the recipient mobile subscriber has not been ported to the foreign network or has been ported into the first network, forwarding the request message to the HSS in the first network.

A non-transitory computer readable medium having stored thereon executable instructions that when executed by the processor of a computer control the computer to perform steps comprising:

• at a Diameter proxy agent located in a home network:
• receiving, from a mobility management entity (MME) via a Diameter interface, a mobile originated-forward short message (MO-FSM) message directed to a short message service (SMS) service center located in the home network, wherein the MO-FSM message is originated from a sending mobile subscriber;
• querying a local database to determine if the SMS service center is located in the home network;
• if the SMS service center is located in the home network, querying a number portability database to determine whether the sending mobile subscriber has been ported to a foreign network or is otherwise not a home network subscriber;
• in response to determining the sending mobile subscriber is not a subscriber to the home network, sending an error message to the sending mobile subscriber;
• and
• in response to determining the sending mobile subscriber is a subscriber to the home network, forwarding the MO-FSM message to the SMS service center associated with the home network.