Abstract: The embodiments of the present invention provide methods, a system and an application service entity for authenticating User Equipment (UE). The method is applicable to a situation that the UE accesses an application service entity of an Early IP Multimedia Subsystem (IMS), and includes: receiving a Hyper Text Transfer Protocol (HTTP) GET request from the UE, the HTTP GET request including a first user identity and a first IP address; obtaining binding information including a second IP address; and checking whether the first IP address in the HTTP GET request matches the second IP address in the binding information, and rejecting the HTTP GET request if the first IP address mismatches the second IP address. The embodiments of the present invention make it possible to authenticate the UE accessing the application service entity, which ensures not only the access of the legal UE but also the security of the network.

Abstract: A method for processing SIP requests in an IMS network includes: an AS in the IMS network receiving a first SIP request forwarded by a S-CSCF entity, generating a second SIP request and deciding whether it is needed to associate the second SIP request with the first SIP request in terms of service logic at the S-CSCF entity, if it is needed to associate two requests, removing the URI of the AS from the Route header of the first SIP request; otherwise, regenerating the Route header of the second SIP request in the originating UA behavior mode and sending the second SIP request to the S-CSCF entity. Also disclosed is a system for processing SIP requests in an IMS network, including an AS and a S-CSCF entity. Also disclosed is an AS for processing SIP requests in an IMS network and a network entity for service control.

Abstract: The present invention discloses a method for managing multicast subscribers in mobile network, comprising: the data related with multicast traffic is classified into multicast-related record data and multicast route data, wherein said multicast-related record data is stored in the system for query, while said multicast route data is hierarchically stored in the system to determine how to forward multicast data; when a subscriber joins in a multicast group or the multicast subscriber exits the multicast group, said hierarchical multicast route data and said multicast-related record data are modified accordingly, when the multicast subscriber performs position register and position update in network, said hierarchical multicast route data in the system is modified accordingly; in said method, the management of multicast subscribers in mobile network can be achieved and both management efficiency and utilization coefficient of system resources are improved.