Patent ID: 7836487
Filing Date: 2010-11-16
Classification: H04L,H04W

Abstract:
1. A system for Multimedia authentication of a user equipment accessing a Multimedia domain through an access network, comprising: subscriber server for first authenticating said user equipment within said access network, said subscriber server authorizing said user equipment to gain access to said access network wherein said subscriber server storing authentication data associated with said user equipment; means for selectively deciding whether an implicit authentication between the user equipment and a serving call session control function (S-CSCF) of the Multimedia domain can take place based on said first authentication of the user equipment by the access network; and in response to a decision that said implicit authentication can take place, further comprising means for instructing the S-CSCF in the Multimedia domain that implicit authentication of the user equipment can take place by re-using said authentication data stored in the subscriber server and to not perform any explicit authentication between said S-CSCF and said user equipment: otherwise in response to a decision that no implicit authentication can take place, further comprising means for explicitly authenticating the user equipment by issuing an authentication challenge message from the S-CSCF to the user equipment.