公开(公告)号：US20230412225A1

公开(公告)日：2023-12-21

申请号：US18249931

申请日：2020-10-23

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Filippo TOSATO ,  Rana AHMED SALEM ,  Salah HAJRI ,  Hao LIU

IPC: H04B7/06 ,  H04L25/02

CPC classification number: H04B7/0626 ,  H04B7/065 ,  H04L25/0204 ,  H04B7/0639

Abstract: Methods and apparatuses for multi-channel communications are disclosed. A method provides precoding, based on sounding reference signal received from a communication device, reference signal ports in spatial and frequency domain by determining pairs of spatial and frequency domain components where the frequency domain components are arranged in clusters comprising one or more frequency domain components, and pairing of at least one of the spatial domain components with at least two clusters of frequency domain components is enabled; sending information of the precoding to the other communication device; and combining the precoding with a report of precoding received in response from the other communication device. Another method provides sending of the sounding reference signal; receiving, the information of the precoding; performing port selection operation based on the clustered information of frequency domain components; and preparing and sending the report based on the selection operation.