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:
Mar. 22, 2016
Filed:
Aug. 23, 2007
Applicants:
Olav Tirkkonen, Helsinki, FI;
Kari Pajukoski, Oulu, FI;
Jianfeng Kang, Beijing, CN;
Inventors:
Assignee:
Nokia Technologies Oy, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 3/10 (2006.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01); H04J 1/16 (2006.01); H04J 3/14 (2006.01);
U.S. Cl.
CPC ...
H04B 7/0634 (2013.01); H04L 5/005 (2013.01); H04L 5/0051 (2013.01); H04L 25/0226 (2013.01);
Abstract
A pilot transmission in a multiple antenna closed loop transmission time multiplexes a beam-specific pilot and an antenna-specific pilot in two short blocks of one uplink sub-frame. The beam-specific pilot is transmitted as an in-band pilot with the same beam as data to provide optimal data demodulation/estimation. The antenna-specific pilot is transmitted as an out-band pilot to provide optimal beam selection.