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.:

US 8570890 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 29, 2013

Filed:

Jun. 18, 2009
Applicants:

Weili Ren, Berkshire, GB;

Michael Nosley, Berkshire, GB;

Inventors:

Weili Ren, Berkshire, GB;

Michael Nosley, Berkshire, GB;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 1/16 (2006.01); H04J 3/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

A mobile station establishes UL synchronization by the use of downlink preamble messages, and by monitoring timing drift within the downlink signalling and by updating the UL synchronization value responsive to the magnitude of the timing drift exceeding a threshold value. Tx power values can also be updated as a function of the updated synchronization value.


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