HOME SUBSCRIBER SERVER CONFIGURATION METHOD AND SYSTEM
First Claim
1. ) A home subscriber server configuration method in an IP network for achieving an IMS (IP Multimedia Subsystem) architecture, wherein a plurality of home subscriber servers (HSS servers) are provided for storing user information of user equipment and information for selecting call session control server (S-CSCF server) that administrates call session control, the plurality of HSS servers are in a redundant configuration for respective areas, and a particular HSS server to be accessed by an inquiry session control server (I-CSCF server) to determine the S-CSCF server to register a new user equipment or the S-CSCF server is determined by sending an interrogation from the I-CSCF server or the S-CSCF server to a subscriber locator server (SLF server) that stores a correspondence between the plurality of HSS servers and user equipment, comprising the steps of:
- synchronizing the information to be stored in the plurality of HSS servers in the redundant configuration; and
sending by the SLF server that receives the interrogation from the I-CSCF server or the S-CSCF server access information corresponding to the interrogation for the plurality of HSS servers back to the I-CSCF server or the S-CSCF server from which the interrogation is originated.
1 Assignment
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Accused Products
Abstract
The present invention is to provide a home subscriber server configuration method and system that is accessible in switching to any one of plural HSS servers in a redundant configuration. Information stored in such plural HSS servers (e.g., HSS-A server 40A and HSS-B server 40B) are synchronized as identical information. When an interrogation for a particular HSS server to be accessed from the I-CSCF server 30 or the S-CSCF server 21 is received, the access information for the plural HSS servers 40A, 40B corresponding to the interrogation is returned after rearranging to the predetermined order of priority to the I-CSCF server 30 or the S-CSCF server 21 from which the inquiry is originated. If no response is received from either one of the HSS servers returned from the SLF server 50 within a predetermined time after the access or if no response is received to the resend operations, the I-CSCF server 30 or the S-CSCF server 21 selects the next HSS server from the plural HSS servers and gains access to such HSS server after switching thereto.
41 Citations
12 Claims
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1. ) A home subscriber server configuration method in an IP network for achieving an IMS (IP Multimedia Subsystem) architecture, wherein a plurality of home subscriber servers (HSS servers) are provided for storing user information of user equipment and information for selecting call session control server (S-CSCF server) that administrates call session control, the plurality of HSS servers are in a redundant configuration for respective areas, and a particular HSS server to be accessed by an inquiry session control server (I-CSCF server) to determine the S-CSCF server to register a new user equipment or the S-CSCF server is determined by sending an interrogation from the I-CSCF server or the S-CSCF server to a subscriber locator server (SLF server) that stores a correspondence between the plurality of HSS servers and user equipment, comprising the steps of:
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synchronizing the information to be stored in the plurality of HSS servers in the redundant configuration; and sending by the SLF server that receives the interrogation from the I-CSCF server or the S-CSCF server access information corresponding to the interrogation for the plurality of HSS servers back to the I-CSCF server or the S-CSCF server from which the interrogation is originated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. ) A home subscriber server configuration system in an IP network for realizing an IMS (IP Multimedia Subsystem) architecture having a plurality of home subscriber servers (HSS servers) in a redundant configuration for respective areas for storing user information for user equipment and information to select a call control server (S-CSCF server) for administering call session control by sending an interrogation to a subscriber locator server (SLF server) that stores the correspondence between the plurality of HSS servers and the user equipment from an interrogating session control server (I-CSCF server) for determining the S-CSCF server to register a new user equipment or from the S-CSCF server to determine the particular HSS server to be accessed by the I-CSCF server or the S-CSCF server, characterized in that:
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information stored in the plural HSS servers in a redundant configuration are synchronized; and when an interrogation is received from the I-CSCF server or the S-CSCF server, the SLF server sends access information to the plurality of HSS servers corresponding to the interrogation back to the I-CSCF server or the S-CSCF server from which the interrogation is originated. - View Dependent Claims (10, 11, 12)
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Specification