Techniques for acquisition of channel state information

US11405079B2 · kind B2 · utility

Assignee

• Intel Corporation · US

Inventors

• Zhibin Yu · Unterhaching, DE
• Ziyang Ju · Munich, DE
• Michael Ruder · Pommelsbrunn, DE

Key dates

• Filing date: Aug 8, 2019
• Grant date: Aug 2, 2022
• Expiry date: Aug 8, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W8/24
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

This disclosure relates to a channel state information, CSI, acquisition circuitry, configured to: determine at least one channel covariance matrix estimate and interference-and-noise covariance matrix estimate based on at least one channel state information reference signal, CSI-RS, resource; select a restricted number of rank indicator, RI, hypotheses from a set of RI hypotheses for running a joint rank indicator-precoding matrix indicator, RI-PMI, search on the CSI-RS based channel covariance matrix estimate and interference-and-noise covariance matrix estimate to select an optimal RI value and associated PMI value, wherein the restricted number of RI hypotheses is in accordance with a run-time estimated CSI acquisition capability of the CSI acquisition circuitry; and execute the joint RI-PMI search based on the selected RI hypotheses.