公开(公告)号：AU2023346629A1

公开(公告)日：2025-04-17

申请号：AU2023346629

申请日：2023-09-25

Applicant: ERICSSON TELEFON AB L M

Inventor： MURUGANATHAN SIVA ,  ATHLEY FREDRIK ,  ZHANG XINLIN ,  WINGES JOHAN ,  NAGALAPUR KEERTHI KUMAR

IPC: H04B7/06

Abstract: Systems and methods of Channel State Information (CSI) reporting with Type II codebook for high velocity are provided. In some embodiments, a method includes determining when to apply Doppler domain compression and when to avoid Doppler domain compression when feeding back a CSI report; determining a signaled number of CSI instances, for which the network node requests the UE to compute CSI; and based on the number of CSI instances, determining whether to apply CSI compression in the Doppler domain or not. Some solutions proposed allow the possibility for the network and the UE to support cases with Doppler domain compression and without Doppler domain compression under a single CSI reporting framework. Based on the signaling received from the network, the solutions allow the UE to determine when to feedback selected Doppler domain bases and when to avoid Doppler domain bases selection in the Type II CSI report.

公开(公告)号：CA3129606A1

公开(公告)日：2020-08-27

申请号：CA3129606

申请日：2019-02-19

Applicant: ERICSSON TELEFON AB L M

Inventor： PETERSSON SVEN ,  NILSSON ANDREAS ,  ATHLEY FREDRIK ,  TIMO ROY ,  ZHANG XINLIN

IPC: H04B7/0404 ,  H04B7/0456 ,  H04B7/06 ,  H04L25/02

Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises creating a virtual antenna port for, and applied over, at least two of the physical antenna ports. The method comprises transmitting, in the virtual antenna port, as many uplink reference signals as there are physical antenna ports.

公开(公告)号：CA3238905A1

公开(公告)日：2023-05-25

申请号：CA3238905

申请日：2022-11-22

Applicant: ERICSSON TELEFON AB L M

Inventor： FRENNE MATTIAS ,  ZHANG XINLIN ,  ATHLEY FREDRIK ,  GAO SHIWEI ,  MURUGANATHAN SIVA

IPC: H04B7/0417 ,  H04B7/0456

Abstract: There is provided a method performed by a user equipment (UE). The method comprises: receiving a reference signal over multiple time instances; determining time domain properties of a channel, based on the received reference signal; and sending a report to a network node, the report comprising information about the determined time domain properties of the channel. A UE for implementing this method is also provided.

公开(公告)号：AU2019443559A1

公开(公告)日：2021-10-14

申请号：AU2019443559

申请日：2019-04-29

Applicant: ERICSSON TELEFON AB L M

Inventor： PETERSSON SVEN ,  NILSSON ANDREAS ,  ATHLEY FREDRIK ,  TIMO ROY ,  ZHANG XINLIN

IPC: H04B7/06

Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. Each physical antenna port is fed by its own power amplifier. The method comprises transmitting, in only the physical antenna port is fed by the power amplifier configured for highest total output power of all the power amplifiers, as many uplink reference signals as there are physical antenna ports in total.