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 current registration state of the UE is an assigned S-CSCF state.
1 Assignment
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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.
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Citations
24 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 current registration state of the UE is an assigned S-CSCF state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for implementing an Internet Protocol (IP) Multimedia Subsystem (IMS) registration, comprising:
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recording the current registration state of a User Equipment (UE) and the Service Call Session Control Function (S-CSCF) Name of an S-CSCF in response to receiving a Multimedia Authentication Request (MAR) from the S-CSCF;
receiving a Register request of the UE initiated by an Interrogating Call Session Control Function (I-CSCF); and
returning the S-CSCF Name of the S-CSCF to the I-CSCF when the current registration state of the UE is an assigned S-CSCF state. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification