Routing of a CDMA MS initiated USSD request

A Mobile Switching Center (MSC) of a Code Division Multiple Access (CDMA) telecommunications wireless network including a CDMA mobile station (MS), a CDMA base station (BS), a CDMA Home Location Register (HLR) and an Unstructured Supplementary Service Data (USSD) Gateway, the MSC comprising:

• a network interface unit configured to receive a USSD message in a first form from the CDMA BS;
• and
• a processing unit configured to:
• process the USSD message in the first form,
• examine a subscriber profile,
• determine, based on the subscriber profile, whether the USSD message in the first form is allowed to be processed for routing to the USSD Gateway, and
• route the USSD message in a second form to the CDMA telecommunication wireless network when the USSD message is allowed to be processed for routing to the USSD Gateway,
• the USSD message of the first form being an Interoperability Specification (IOS) ADDS Deliver message having an ADDS User Part informational element having an Application Data Message field containing a USSD message and having a Data Burst Type field set to a value of USSD.

A method of a Mobile Switching Center (MSC) of a Code Division Multiple Access (CDMA) telecommunications wireless network including a CDMA mobile station (MS), a CDMA base station (BS), a CDMA Home Location Register (HLR) and an Unstructured Supplementary Service Data (USSD) Gateway comprising:

• receiving a USSD message in a first form at a network interface unit;
• processing the USSD message in the first form with a processing unit;
• examining a subscriber profile;
• determining, based on the subscriber profile, whether the USSD message in the first form is allowed to be processed for routing to the USSD Gateway;
• and
• routing the USSD message in a second form with the processing unit through the network interface unit to the CDMA telecommunication wireless network when the USSD message is allowed to be processed for routing to the USSD Gateway,
• the USSD message of the first form being an Interoperability Specification (IOS) ADDS Deliver message having an ADDS User Part informational element having an Application Data Message field containing a USSD message and having a Data Burst Type field set to a value of USSD.

A method of a Mobile Switching Center (MSC) of a Code Division Multiple Access (CDMA) telecommunications wireless network including a CDMA mobile station (MS), a CDMA base station (BS), a CDMA Home Location Register (HLR) and an Unstructured Supplementary Service Data (USSD) Gateway comprising:

• receiving a USSD message in a first form at a network interface unit from the CDMA BS;
• processing the USSD message in the first form with a processing unit;
• and
• routing the USSD message in a second form with the processing unit through the network interface unit to the CDMA telecommunication wireless network,
• the USSD message of the first form being an Interoperability Specification (IOS) ADDS deliver message having an ADDS User Part informational element having an Application Data Message field containing a USSD message and having a Data Burst Type set to a value of USSD.

A Mobile Switching Center (MSC) of a Code Division Multiple Access (CDMA) telecommunications wireless network including a CDMA mobile station (MS), a CDMA base station (BS), a CDMA Home Location Register (HLR) and an Unstructured Supplementary Service Data (USSD) Gateway comprising:

• a processing unit configured to examine a subscriber profile and determine, based on the subscriber profile, whether USSD information is allowed to be processed for routing to the USSD Gateway, and to construct a Mobile Application Part (MAP) Short Message Service (SMS) DeliveryPointToPoint (SMDPP) INVOKE message having a parameter that identifies the SDMPP INVOKE is carrying USSD information;
• and
• a network interface unit through which the processing unit is configured to route the SMDPP INVOKE message to the CDMA telecommunication wireless network when the USSD information is allowed to be processed for routing to the USSD Gateway,
• the USSD information being part of an Interoperability Specification (IOS) ADDS Deliver message having an ADDS User Part informational element having an Application Data Message field containing a USSD message and having a Data Burst Type field set to a value of USSD.