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:
Feb. 13, 2018
Filed:
Oct. 11, 2007
Josef Martin Eichinger, Neufinsing, DE;
Volker Jungnickel, Berlin, DE;
Egon Schulz, München, DE;
Wolfgang Zirwas, München, DE;
Josef Martin Eichinger, Neufinsing, DE;
Volker Jungnickel, Berlin, DE;
Egon Schulz, München, DE;
Wolfgang Zirwas, München, DE;
Nokia Solutions and Networks GmbH & Co. KG, Munich, DE;
Abstract
Data in a mobile communications system is transmitted on at least one channel between at least one base station with multiple antennas and at least one user equipment. A base station applies precoding to the data based on a set of predefined codebooks. A first tracking mode with a first codebook from the set of predefined codebooks is used for the precoding, and at least a second tracking mode with at least a second codebook from the set of predefined codebooks is used for the precoding. The base station switches between the first tracking mode and the second tracking mode depending on at least one condition of the channel.