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:
Apr. 16, 2024
Filed:
Feb. 10, 2023
Applicant:
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Inventors:
Monica Wifvesson, Lund, SE;
Noamen Ben Henda, Vällingby, SE;
Christine Jost, Dalby, SE;
Vesa Lehtovirta, Espoo, FI;
Assignee:
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2022.01); H04L 9/08 (2006.01); H04W 12/041 (2021.01); H04W 12/0433 (2021.01); H04W 36/00 (2009.01); H04W 36/14 (2009.01); H04W 12/00 (2021.01);
U.S. Cl.
CPC ...
H04W 12/041 (2021.01); H04L 9/0861 (2013.01); H04W 12/0433 (2021.01); H04W 36/0055 (2013.01); H04W 36/14 (2013.01); H04W 12/009 (2019.01);
Abstract
A key management is provided that enables security activation before handing over a user equipment from a source 5G wireless communication system, i.e., a Next Generation System (NGS), to a target 4G wireless communication system, i.e., a Evolved Packet System (EPS)/Long Term Evolution (LTE). The key management achieves backward security, i.e., prevents the target 4G wireless communication system from getting knowledge of 5G security information used in the source 5G wireless communication system.