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. 18, 2014
Filed:
Oct. 18, 2011
Haochuan Zhang, Beijing, CN;
Yang HU, Beijing, CN;
Shaohua LI, Beijing, CN;
Xinghua Song, Beijing, CN;
Jianfeng Wang, Beijing, CN;
Haochuan Zhang, Beijing, CN;
Yang Hu, Beijing, CN;
Shaohua Li, Beijing, CN;
Xinghua Song, Beijing, CN;
Jianfeng Wang, Beijing, CN;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
The invention relates to a methodin a base stationfor determining a transmission rank. The base stationcontrols two or more transmit antenna portsfor supporting a multi-antenna transmission mode and for transmission of data on a channel for communication with a user equipment. The methodcomprises receivinga rank indicator from a user equipment, the rank indicator indicating the number of spatial multiplexing layers recommended by the user equipment, and determiningthe transmission rank based on a channel imbalance factor CIF, wherein the channel imbalance factor CIF quantifies a difference in receive power of the two or more transmit antenna ports. The invention also relates to a base station, methods in user equipment, user equipment, computer programs, and computer program products.