A METHOD FOR MATCHING INITIAL REQUEST MESSAGE IN THE IP MULTIMEDIA SUBSYSTEM SERVICE TRIGGERING PROCESS

摘要

A method for matching initial request messages in the IP multimedia subsystem service triggering process comprises: before the S-CSCF module forwards an initial request message to the AS, generating a trigger request identifier uniquely corresponding to the request and inserting the identifier into the initial request message; then forwarding the initial request message to the AS; and then the AS copies the trigger request identifier in the received initial request message into the initial request message to be sent back; finally, the S-CSCF module determines whether an initial request message received by the S-CSCF is the response to the initial request message sent to the AS by the S-CSCF module previously based on the trigger request identifier in the initial request message received by the S-CSCF, determines the corresponding relationship, and then performs the subsequent service control process. With the present invention, the requirement that the S-CSCF module must correctly match the initial request message with the one sent back can be satisfied, thus guarantee the normal performance of service triggering and the normal use of the services.