Apparatus and method for delivering short message service efficiently in wireless communication system

A method by a home subscriber server (HSS), the method comprising:

• receiving, from a mobility management entity (MME), information on an address of the MME for short message service (SMS) routing in case that the MME is enabled to use SMS without a mobile switching center (MSC);
• transmitting, to the MME, subscriber information including information indicating that the terminal is limited to packet switched (PS) domain services and to SMS;
• receiving, from an SMS gateway, information for SMS routing for the terminal;
• and
• transmitting, to the SMS gateway, information on the MME to which SMS for the terminal is routed.

A method by a terminal in a wireless communication system, the method comprising:

• transmitting, to a mobility management entity (MME), information indicating that the terminal requests short message service (SMS);
• receiving, from the MME, an accept message for SMS based on subscriber information;
• and
• receiving an SMS message for the terminal from the MME,
• wherein in case that the MME is enabled to use SMS without the MSC, any registration between the MME and at least one of a visitor location register (VLR) or the MSC is not performed.

A mobility management entity (MME) comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• receive, from a terminal, information indicating that the terminal requests short message service (SMS),
• determine whether a MME is enabled to use SMS without a mobile switching center (MSC),
• transmit, to a home subscriber server (HSS), information on the MME for SMS routing in case that the MME is enabled to use SMS without the MSC,
• receive, from the HSS, subscriber information including information indicating that the terminal is limited to packet switched (PS) domain services and to SMS,
• transmit, to the terminal, an accept message for SMS based on the subscriber information, and
• in case that the MME is enabled to use SMS without the MSC, not perform any registration with at least one of a visitor location register (VLR) or the MSC.

A home subscriber server (HSS) comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• receive, from a mobility management entity (MME), information on an address of the MME for short message service (SMS) routing in case that the MME is enabled to use SMS without a mobile switching center (MSC),
• transmit, to the MME, subscriber information including information indicating that the terminal is limited to packet switched (PS) domain services and to SMS,
• receive, from an SMS gateway, information for SMS routing for the terminal, and
• transmit, to the SMS gateway, information on the MME to which SMS for the terminal is routed.

A terminal comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• transmit, to a mobility management entity (MME), information indicating that the terminal requests short message service (SMS),
• receive, from the MME, an accept message for SMS based on subscriber information, and
• receive an SMS message for the terminal from the MME,
• wherein, in case that the MME is enabled to use SMS without the MSC, any registration between the MME and at least one of a visitor location register (VLR) or the MSC is not performed.