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:
Feb. 02, 2021
Filed:
Sep. 13, 2017
Ntt Docomo, Inc., Chiyoda-ku, JP;
Riccardo Guerzoni, Munich, DE;
Jari Mutikainen, Munich, DE;
Takashi Koshimizu, Chiyoda-ku, JP;
Irfan Ali, Palo Alto, CA (US);
NTT DOCOMO, INC., Tokyo, JP;
Abstract
According to one embodiment, a method for establishing a communication is described comprising performing, over a first mobile radio communication network, a call control protocol message exchange indicating that a communication session establishment between a first communication device and a second communication device is intended; initiating a fallback by the first communication device from the first mobile radio communication network to a second mobile radio communication network, in reaction to a specific call control message of the call control protocol message exchange; performing the fallback and establishing the communication session between the first communication device and the second communication device via the second mobile radio communication network.