公开(公告)号：US20240235641A1

公开(公告)日：2024-07-11

申请号：US18611528

申请日：2024-03-20

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Rana AHMED SALEM ,  Mihai ENESCU ,  Youngsoo YUK ,  Keeth Saliya Jayasinghe LADDU ,  Salah Eddine HAJRI

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0634

Abstract: Techniques of performing CSI reporting include identifying a cluster of TRPs sharing common information in their CSI and transmitting a complete CSI report to a selected TRP of the cluster while transmitting partial CSIs reports to other TRPs of the cluster. Along these lines, in an example implementation, a UE receives a CSI-RS from a network, with the CSI-RS carrying a plurality of reference symbols from a plurality of TRPs. Based on the plurality of symbols, the UE generates TRP data representing CSI feedback for each of the TRPs. From the CSI feedback, the UE identifies, as a cluster, a subset of the TRPs that share common information within the CSI feedback. The UE then sends first identification data identifying the subset of the TRPs that make up the cluster to the network.

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.

公开(公告)号：US20230388841A1

公开(公告)日：2023-11-30

申请号：US18249093

申请日：2021-10-20

Applicant: Nokia Technologies Oy

Inventor： Salah Eddine HAJRI ,  Keeth Saliya Jayasinghe LADDU ,  Rana AHMED SALEM ,  Guillermo POCOVI ,  Zexian LI ,  Matha DEGHEL

IPC: H04W24/10 ,  H04B7/06

CPC classification number: H04W24/10 ,  H04B7/0626

Abstract: An apparatus comprising means for performing: receiving a channel state reporting configuration, the channel state reporting configuration comprising information to enable determination of one or more channel state quantities, wherein determination of at least one of the one or more channel state quantities is based, at least in part, on a plurality of interference measurements taken at a plurality of times; determining at least one channel state quantity using, at least, a plurality of interference measurements taken at a plurality of different times, wherein the plurality of interference measurements are enabled, at least in part, by information in the channel state reporting configuration; and transmitting the determined at least one channel state quantity.

公开(公告)号：US20230361842A1

公开(公告)日：2023-11-09

申请号：US17908188

申请日：2021-02-22

Applicant: Nokia Technologies Oy

Inventor： Salah Eddine HAJRI ,  William HILLERY ,  Filippo TOSATO ,  Eugene VISOTSKY ,  Frederick VOOK ,  Rana AHMED SALEM ,  Marco MASO

IPC: H04B7/06

CPC classification number: H04B7/0639 ,  H04B7/0617 ,  H04B7/0626

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.

公开(公告)号：US20230113496A1

公开(公告)日：2023-04-13

申请号：US17498738

申请日：2021-10-11

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Rana AHMED SALEM ,  Frederick VOOK ,  Filippo TOSATO ,  Eugene VISOTSKY

IPC: H04B7/10 ,  H04L5/00 ,  H04B7/0456 ,  H04B7/06

Abstract: Systems, methods, apparatuses, and computer program products for co-polarized transmission and port selection associated therewith are provided. For example, a method can include feeding back compressed channel state information. The channel state information can include combining coefficients used to combine a number of space domain, frequency domain, or both space and frequency domain ports. At least one layer can be restricted to be transmitted on one polarization. The feedback for the at least one layer only involves the combining coefficients on the one polarization.