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.

Date of Patent:
Jan. 13, 2026

Filed:

Jan. 24, 2022
Applicant:

Nec Corporation, Tokyo, JP;

Inventors:

Toshiyuki Tamura, Tokyo, JP;

Takehito Abe, Tokyo, JP;

Assignee:

NEC CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 5/00 (2006.01); H04W 36/14 (2009.01); H04W 76/25 (2018.01);
U.S. Cl.
CPC ...
H04L 5/0055 (2013.01); H04W 36/144 (2023.05); H04W 76/25 (2018.02);
Abstract

An object is to appropriately manage a resource for user data control. A method for a source core network node according to one aspect of the present disclosure, includes: receiving, from a source RAN associated with a 5GS, a first message for canceling handover of a terminal from the 5GS to an EPS; transmitting a second message to a target core network node associated with the EPS when receiving the first message; receiving a third message from the target core network node when transmitting the second message; transmitting a fourth message to the source RAN when receiving the third message; and transmitting a fifth message for releasing a resource being secured in a core network device when transmitting the fourth message.


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