Method for implementing IP multimedia subsystem registration
First Claim
1. A method for implementing an Internet Protocol (IP) Multimedia Subsystem (IMS) registration, comprising:
- receiving, by a Home Subscriber Server (HSS), an Multimedia Authentication Request (MAR) message from a Service Call Session Control Function (S-CSCF);
wherein the S-CSCF is selected for a User Equipment (UE) when a first Register request is sent by the UE;
recording, by the HSS, the current registration state of the UE, generating Authentication Vectors (AV) and sending the AVs to the S-CSCF;
initiating, by the S-CSCF, an authentication challenge to the UE according to the AVs returned by the HSS;
sending, by the UE, a second Register request to an Interrogating Call Session Control Function (I-CSCF), after the UE implements the authentication challenge;
notifying, by the I-CSCF, the HSS of inquiring the subscriber registration state; and
returning, by the HSS, an S-CSCF Name to the I-CSCF when the registration state of the UE is not registered and the pending flag is set to pending state, wherein the pending flag is set to pending state for indicating that the UE is in the authentication procedure.
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Accused Products
Abstract
A method for implementing an IP Multimedia Subsystem (IMS) registration, includes: a Home Subscriber Server (HSS) recording a current registration state of a User Equipment (UE) in response to receiving a Multimedia Authentication Request (MAR) initiated by a Service Call Session Control Function (S-CSCF) selected for the UE when a first Register request is sent by the UE; in response to receiving a second Register request initiated by an Interrogating Call Session Control Function (I-CSCF), the HSS sends the S-CSCF Name to the I-CSCF when the current registration state of the UE is an assigned S-CSCF state. By the scheme, a same S-CSCF is ensured to be used in the two User Authentication Request/User Authentication Answer (UAR/UAA) procedures of the initial IMS registration procedure, and the initial IMS registration of the UE is implemented successfully.
19 Citations
9 Claims
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1. A method for implementing an Internet Protocol (IP) Multimedia Subsystem (IMS) registration, comprising:
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receiving, by a Home Subscriber Server (HSS), an Multimedia Authentication Request (MAR) message from a Service Call Session Control Function (S-CSCF);
wherein the S-CSCF is selected for a User Equipment (UE) when a first Register request is sent by the UE;recording, by the HSS, the current registration state of the UE, generating Authentication Vectors (AV) and sending the AVs to the S-CSCF; initiating, by the S-CSCF, an authentication challenge to the UE according to the AVs returned by the HSS; sending, by the UE, a second Register request to an Interrogating Call Session Control Function (I-CSCF), after the UE implements the authentication challenge; notifying, by the I-CSCF, the HSS of inquiring the subscriber registration state; and returning, by the HSS, an S-CSCF Name to the I-CSCF when the registration state of the UE is not registered and the pending flag is set to pending state, wherein the pending flag is set to pending state for indicating that the UE is in the authentication procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for implementing an Internet Protocol (IP) Multimedia Subsystem (IMS) registration, comprising:
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receiving, by a Home Subscriber Server (HSS), an Multimedia Authentication Request (MAR) message from a Service Call Session Control Function (S-CSCF);
wherein the S-CSCF is selected for a User Equipment (UE) when a first Register request is sent by the UE;recording, by the HSS, the current registration state of the UE, generating Authentication Vectors (AV) and sending the AVs to the S-CSCF, initiating, by the S-CSCF, an authentication challenge to the UE according to the AVs returned by the HSS; sending, by the UE, a second Register request to an Interrogating Call Session Control Function (I-CSCF), after the UE implements the authentication challenge; notifying, by the I-CSCF, the HSS of inquiring the subscriber registration state; and returning, by the HSS, the S-CSCF Name to the I-CSCF when the registration state of the UE is an authentication state, wherein the authentication state is a subscriber registration state for indicating that a UE is in the authentication procedure. - View Dependent Claims (9)
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Specification