Sprint Communications Comapny L.p.

Sprint Spectrum L.p.

George Dohanich

Sean Patrick Hoelzle

Russell E Huntsman

Thomas Keith Terwilliger, Jr

Disclosed is a method and system to help avoid performing third-party registration of a UE with an SMS gateway of an IMS, the IMS including a P-CSCF, an S-CSCF, and an HSS. In an example implementation, when registering for service with the IMS, the UE provides UE-capability data to the P-CSCF, the P-CSCF sends the data to the S-CSCF, and the S-CSCF sends the data to the HSS. The S-CSCF does not send the UE-capability data to the SMS gateway. Rather, when the SMS gateway receives a request to send an SMS message to the UE, the SMS gateway queries the HSS to obtain the UE-capability data. Based on the UE-capability data, the SMS gateway makes a determination of whether the UE is capable of receiving SMS messages over IP and routes the SMS message over an appropriate access network based on the determination.

Delivering short message service (SMS) messages via an internet protocol multimedia subsystem (IMS)

The message server system receives a data message transferred by a sending communication system for delivery to a receiving communication system. The data message has a first messaging format with disposition notification codes. The messaging server system converts the data message from the first messaging format to a second messaging format and transfers the data message for delivery to a receiving communication system over a particular communication network. The messaging server system processes the disposition notification codes and responsively transfers a disposition notification for delivery to the sending communication system, indicating that the data message was converted from the first messaging format into the second messaging format, and was transferred over the particular communication network for delivery to the receiving communication system.

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Cary, NC, United States of America

George Dohanich