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:
Jul. 30, 2024

Filed:

Dec. 23, 2019
Applicant:

Nec Corporation, Tokyo, JP;

Inventors:

Hisashi Futaki, Tokyo, JP;

Jinsock Lee, Tokyo, JP;

Assignee:

NEC CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 3/06 (2006.01); H04W 56/00 (2009.01);
U.S. Cl.
CPC ...
H04W 56/0005 (2013.01); H04W 56/004 (2013.01); H04W 56/0045 (2013.01); H04W 56/0055 (2013.01);
Abstract

A wireless communication system is provided for reducing the probability that latency before data transmission increases when a mobile station that is actually in sync is judged to be out of sync. A base station causes the timing calculation part to calculate the timing advance (TA) of a transmit timing from the mmobile station; causes the timer adaptive control part to obtain the traveling speed or the time variation in TA of the mmobile station and, adaptively determines and outputs as the timer update information the length of the mfirst timer within an M number in total of synchronization timers and the length of the second timer of the mmobile station and update the length of the mfirst timer; and transmits from the downlink transmission part a downlink signal which contains timer update information.


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