Patent · US Active

Method for establishing a communication and communication device

US10912141B2 · kind B2 · utility

1Cited by

0References

13Claims

0Family size

Assignee

NTT DOCOMO, INC. · JP

Inventors

Riccardo Guerzoni · Munich, DE
Jari Mutikainen · Munich, DE
Takashi Koshimizu · Yokohama, JP
Irfan Ali · Palo Alto, US

Key dates

Filing date	Sep 13, 2017
Grant date	Feb 2, 2021
Priority date	—
Expiry date	Sep 13, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH04W80/12
WIPO fieldDigital communication
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.