| 摘要 |
<p>A method for providing service to a user of CS domain by PS domain enables fixed network user to access to IMS directly and use IMS services, thereby realizing blending and service reuse of fixed network and mobile network. The present invention makes IMS not only to support interworking with CS domain, but also to provide services to the user of fixed network CS domain by expanding the functions of network nodes such as MGCF, S-CSCF and AS or the like. MGCF can judge whether the user of CS domain which signaling path passes through MGCF can use IMS service, and trigger IMS session; S-CSCF processes session and routing control, and triggers AS according to IMS service subscribing information; AS performs service control and provides IMS service for the user of fixed network CS domain; and also HSS function is expanded for storing and managing IMS subscribing service data related to the users of fixed network CS domain.</p> |
