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:
Sep. 13, 2022
Filed:
Oct. 10, 2018
Applicant:
Ntt Docomo, Inc., Tokyo, JP;
Inventors:
Hiroshi Aono, Tokyo, JP;
Alf Zugenmaier, Munich, DE;
Assignee:
NTT DOCOMO, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04W 12/50 (2021.01); H04L 9/30 (2006.01); H04W 12/041 (2021.01); H04W 12/43 (2021.01);
U.S. Cl.
CPC ...
H04W 12/50 (2021.01); H04L 9/3073 (2013.01); H04W 12/041 (2021.01); H04W 12/43 (2021.01);
Abstract
A security establishment method includes generating a pair of keys via mutual authentication between a terminal device () and a serving network, and the terminal device () and the serving network sharing Kby using the generated pair of keys (Steps Sand S), the terminal device () and a roaming destination network of the terminal device () generating, by using the K, Kmapped with SEAF () (Steps Sand S), and the terminal device () and the roaming destination network generating, by using at least the Kand SUPI used to recognize a subscriber in the serving network, Kmapped with AMF () (Steps Sand S).