The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2011
Filed:
Mar. 14, 2008
Keiji Fukui, Tokyo, JP;
Tetsuo Inoue, Tokyo, JP;
Keiji Fukui, Tokyo, JP;
Tetsuo Inoue, Tokyo, JP;
NEC Corporation, Tokyo, JP;
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 serverA and HSS-B serverB) are synchronized as identical information. When an interrogation for a particular HSS server to be accessed from the I-CSCF serveror the S-CSCF serveris received, the access information for the plural HSS serversA,B corresponding to the interrogation is returned after rearranging to the predetermined order of priority to the I-CSCF serveror the S-CSCF serverfrom which the inquiry is originated. If no response is received from either one of the HSS servers returned from the SLF serverwithin a predetermined time after the access or if no response is received to the resend operations, the I-CSCF serveror the S-CSCF serverselects the next HSS server from the plural HSS servers and gains access to such HSS server after switching thereto.