Method and apparatus for granting access by a portable phone to multimedia services
First Claim
1. A method for registering a UE with an IMS so as to allow the UE to access, over a digital communication system, an IM service to which the UE is subscribed, the method including a step in which an S-CSCF of the IMS sends an AV request message (CM1) to an HSS, the method characterized in that it includes a step in which in response to the AV request message (CM1), the HSS provides (31) in a AV request response message (CM2) a field indicating a list of substantially all services to which the UE is subscribed along with either information that allows establishing SAs for each such service or information that could be used as keying material or other input for other security mechanisms specific to each service.
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Accused Products
Abstract
An enhanced IMS AKA (21) that allows a UE to register with IMS for all multimedia applications to which it is subscribed. Some of the message content of some of the IMS AKA messages (22) per TS 3GPP 33.203 v 1.0.0 is augmented, and in particular, the message content of CM2 is augmented to include a list of all services to which the UE is subscribed along with either information that allows establishing SAs for each service or information that could be used as keying material or other input for other security mechanisms specific to each service.
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Citations
11 Claims
- 1. A method for registering a UE with an IMS so as to allow the UE to access, over a digital communication system, an IM service to which the UE is subscribed, the method including a step in which an S-CSCF of the IMS sends an AV request message (CM1) to an HSS, the method characterized in that it includes a step in which in response to the AV request message (CM1), the HSS provides (31) in a AV request response message (CM2) a field indicating a list of substantially all services to which the UE is subscribed along with either information that allows establishing SAs for each such service or information that could be used as keying material or other input for other security mechanisms specific to each service.
- 7. A method for registering a UE with an IMS so as to allow the UE to access, over a digital communication system, an IM service to which the UE is subscribed, the method including a step in which a P-CSCF of the IMS communicates to the UE an authorization challenge message (SM6), characterized in that the authorization challenge message (SM6) includes at least one SPD entry and a corresponding SA derived by the P-CSCF from information provided to the P-CSCF indicating substantially all services to which the UE is subscribed along with either information that allows establishing SAs for each such service or information that could be used as keying material or other input for other security mechanisms specific to each service, and the UE inserts (35) the at least one SPD entry into its SPD and the corresponding SA into its SADB, so that for a predetermined time any traffic between the UE and the P-CSCF is secure for the substantially all services to which the UE is subscribed.
Specification