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:
Dec. 02, 2025
Filed:
Feb. 22, 2021
Nokia Technologies Oy, Espoo, FI;
Salah Eddine Hajri, Antony, FR;
William Hillery, Lafayette, IN (US);
Filippo Tosato, Bures sur Yvette, FR;
Eugene Visotsky, Buffalo Grove, IL (US);
Frederick Vook, Schaumburg, IL (US);
Rana Ahmed Salem, Munich, DE;
Marco Maso, Issy les Moulineaux, FR;
NOKIA TECHNOLOGIES OY, Espoo, FI;
Abstract
There is provided a method at a network node of a communication network, comprising: receiving an uplink reference signal from a user equipment; estimating, based on the received uplink reference signal, delay information regarding a delay profile of a communication channel between the user equipment and the network node and spatial information regarding the communication channel; applying both the delay information and the spatial information in precoding of at least one downlink reference signal; transmitting the at least one precoded downlink reference signal to the user equipment; and receiving, from the user equipment as a response to the transmission of the at least one precoded downlink reference signal, channel information, the channel information indicating at least non-zero coefficients of at least one channel transmission layer.