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:
Dec. 29, 2015
Filed:
Oct. 06, 2009
Anand Raghawa Prasad, Tokyo, JP;
Andreas Kunz, Heidelberg, DE;
Toshiyuki Tamura, Tokyo, JP;
Stefan Schmid, Heidelberg, DE;
Thilo Ewald, Heidelberg, DE;
Anand Raghawa Prasad, Tokyo, JP;
Andreas Kunz, Heidelberg, DE;
Toshiyuki Tamura, Tokyo, JP;
Stefan Schmid, Heidelberg, DE;
Thilo Ewald, Heidelberg, DE;
NEC CORPORATION, Tokyo, JP;
Abstract
A PUCI system is designed to process an incoming call originated by the user equipment toward the counterpart user equipment via an EMS node having a PUCI-light functionality, which includes an IBCF/I-CSCF, a S-CSCF, and a database storing the PUCI-light information. Through a query to the database indicating a suspicious session in relation to the incoming call, the IMS node immediately blocks the suspicious session or simply marks the suspicious session for the further processing at a subsequent node. The reason for rejection is included in a SIP BYE/ERROR message of an original session setup message, which is interpreted by a previous IMS node so as to obtain the relevant information from a SIP header. The relevant information is stored in either a global operator policy database or a local database, thus enabling a PUCI-negating IMS node to reject an unsolicited call related to the blocked session.