| 摘要 |
A method for implementing an Internet Protocol Multimedia Subsystem (IMS) registration, includes: an HSS recording a current registration state(208) indicating that a UE enters the authentication state upon receiving an MAR initiated by an S-CSCF(207), during the initial IMS registration procedure initiated by the UE; the HSS determines whether the UE's current registration state is an assigned S-CSCF state (216) upon receiving a UAR message initiated by an I-CSCF(215); if it is the assigned S-CSCF state, the HSS sends to the I-CSCF a UAA message carrying the S-CSCF Name(217); otherwise, the HSS sends to the I-CSCF the UAA message carrying the S-CSCF Capabilities(217). By the method,a same S-CSCF is ensured to be used in the two UAR/UAA procedures of the initial IMS registration procedure, and the UE's initial IMS registration is implemented successfully. The method of the invention also ensures that I-CSCF can send the corresponding message in the LIR/LIA process to the S-CSCF assigned to the user when the LIR/LIA process is triggered in the initial IMS register process, thereeby the LIR/LIA process is finished successfully.
|
