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:
May. 31, 2022
Filed:
Apr. 21, 2017
Ntt Docomo, Inc., Tokyo, JP;
Motohiro Abe, Tokyo, JP;
Shinya Takeda, Tokyo, JP;
Kazuto Shimizu, Tokyo, JP;
Koichiro Kunitomo, Tokyo, JP;
Alf Zugenmaier, Munich, DE;
NTT DOCOMO, INC., Tokyo, JP;
Abstract
A switch is provided. The switch is connected to a control apparatus for controlling Lawful Interception, and relays packets transmitted and received between a user apparatus and an IMS apparatus in the home network of the user apparatus. The switch includes a determination unit configured to determine whether the user apparatus is a Lawful Interception target or whether the user apparatus is a roaming user; and a transmission unit configured to, in the case where the user apparatus is a Lawful Interception target or in the case where the user apparatus is a roaming user, transmit to a mobile management switch information indicating to the user apparatus that the user apparatus should transmit and receive the packets to and from the IMS apparatus without encryption.