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:
Oct. 26, 2004
Filed:
Sep. 06, 2000
Applicant:
Inventors:
Thomas R. Giallorenzi, Herriman, UT (US);
David W Matolak, Athens, OH (US);
Douglas G. Bowen, Spanish Fork, UT (US);
Assignee:
L-3 Communications Corp., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/212 ;
U.S. Cl.
CPC ...
H04B 7/212 ;
Abstract
Method and apparatus for maintaining synchronization in a CDMA communication system by operating closed loop timing control between a radio base unit and subscriber units, operating open loop timing control between the radio base unit and the subscriber units, and using timing information derived from the open loop to correct the closed loop. Generally the open loop is faster in response than the closed loop. The open loop timing control may be generated by using GPS data. A radio base station and a subscriber unit operating in accordance with these principles.