Patent · US Active

Method of determining channel state information

US8787480B2 · kind B2 · utility

4Cited by

0References

27Claims

0Family size

Assignee

BlackBerry Limited · CA

Inventors

Chandra Gupta · Bochum, DE
Martin Kosakowski · Bochum, DE
Ernst Zielinski · Bochum, DE

Key dates

Filing date	Aug 24, 2011
Grant date	Jul 22, 2014
Priority date	—
Expiry date	Nov 19, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04L27/2647
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for estimating channel state information (CSI) for a communication channel is disclosed. Theoretical channel capacities are calculated using combinations of rank indicator (RI) and precoding matrix index (PMI) values. A number of these theoretical channel capacities are selected and used for determining an optimum combination of channel quality indicator (CQI) values, RI values and PMI values. This combination of values is subsequently transmitted as CSI.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.