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:
Jul. 09, 2019
Filed:
Nov. 05, 2014
Sony Corporation, Tokyo, JP;
Erik Bengtsson, Eslöv, SE;
Kåre Agardh, Rydebäck, SE;
Rickard Ljung, Helsingborg, SE;
Vanja Plicanic Samuelsson, Lund, SE;
Sony Corporation, Tokyo, JP;
Abstract
A cellular multiple-input and multiple-output, MIMO, system comprises a base station having a plurality of antennas. Pilot signals are received by the base station in each frame of a sequence of frames (). The base station analyzes the pilot signals to determine radio channel properties of radio channels between respectively each one of a plurality of terminals and the base station. The sequence of frames () comprises frames of a first frame type () and frames of a second frame type (). Each frame of the second frame type () have a greater number of time slots in which the base station receives the pilot signals than each frame of the first frame type (). The frames of the second frame type () are included periodically in the sequence of frames ().