公开(公告)号：US20240348303A1

公开(公告)日：2024-10-17

申请号：US18486571

申请日：2023-10-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jin Hyun SO ,  Hyuk Joon KWON ,  Kee-Bong SONG

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0658

Abstract: A system and a method are disclosed. The method includes partitioning channel state information (CSI) into one or more discrete elements based on a predetermined dimension; categorizing the partitioned CSI into one or more bins having an equal length; and encoding the categorized partitioned CSI.

公开(公告)号：US20240340058A1

公开(公告)日：2024-10-10

申请号：US18626687

申请日：2024-04-04

Applicant: KT CORPORATION

Inventor： kyujin Park

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0658

Abstract: Provided are a method and apparatus for efficiently performing CSI report configuration for network energy saving in a wireless communication system and generating a CSI report based on the CSI report configuration. A base station transmits channel state information (CSI) report configuration information to a terminal. The terminal generates a CSI report based on the CSI report configuration information and transmit the CSI report to the base station. The CSI report configuration information includes at least one sub configuration information, and the CSI report includes at least one CSI obtained in units of sub configuration based on the at least one sub configuration information.

公开(公告)号：US12081299B2

公开(公告)日：2024-09-03

申请号：US17441677

申请日：2019-12-24

Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.

Inventor： Zhengxuan Liu ,  Hui Li ,  Qiubin Gao

IPC: H04B7/06 ,  H04B7/0456

CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04B7/0658

Abstract: Disclosed are a channel state information reporting method and device, relating to the field of wireless communications and used for solving the problem of no corresponding CSI reporting method being provided at present regarding a Rel-16 codebook structure. The method of the present application includes a terminal determining, according to codebook parameter information, codebook indication information corresponding to a data transmission layer; and the terminal sending channel state information (CSI) including the codebook indication information to a network side device, and the codebook indication information includes a part or all of the following: beam information for determining a precoding matrix orthogonal combination beam, base vector information for determining a precoding matrix compression base vector, and nonzero coefficient indication information for determining a precoding matrix compression coefficient.

公开(公告)号：US20240154650A1

公开(公告)日：2024-05-09

申请号：US18402204

申请日：2024-01-02

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Sebastian Faxér ,  Shiwei Gao ,  Robert Mark Harrison ,  Siva Muruganathan

IPC: H04B7/0417 ,  H04B7/0456 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/065 ,  H04B7/0658

Abstract: Systems and methods for multi-beam Channel State Information (CSI) reporting are provided. In some embodiments, a method of operation of a second node connected to a first node in a wireless communication network for reporting multi-beam CSI includes reporting a rank indicator and a beam count indicator in a first transmission to the first node. The method also includes reporting a cophasing indicator in a second transmission to the first node. The cophasing indicator identifies a selected entry of a codebook of cophasing coefficients where the number of bits in the cophasing indicator is identified by at least one of the beam count indicator and the rank indicator. In this way, feedback for both a rank indicator and a beam count indicator may be possible which may allow robust feedback and variably sized cophasing and beam index indicators.

公开(公告)号：US20240120981A1

公开(公告)日：2024-04-11

申请号：US18544472

申请日：2023-12-19

Applicant: Keying WU ,  Xiaobo ZHANG

Inventor： Keying WU ,  Xiaobo ZHANG

IPC: H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0658 ,  H04B7/0626 ,  H04L5/0051

Abstract: The present application discloses a method and device in a node for wireless communications. A first node receives a reference signal in a first reference signal resource sub-pool; determines a first function according to the receiving behavior in the first reference signal resource sub-pool; transmits a first information block, the first information block being used to determine the first function; receives a second information block, the second information block being used to determine whether a target reference signal resource is associated with the first function; and transmits a third information block, the third information block indicating a first compressed CSI, the first compressed CSI being an input to the first function for generating a first CSI. The method above can configure relations between reference signals and AI algorithms/parameters flexibly to choose an optimal AI algorithm/parameter for compressing/decompressing CSI based on a reference signal, thus optimizing the CSI feedback performance.

公开(公告)号：US11923932B2

公开(公告)日：2024-03-05

申请号：US17993124

申请日：2022-11-23

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Sebastian Faxér ,  Mattias Frenne ,  Simon Järmyr ,  George Jöngren ,  Niklas Wernersson

IPC: H04B7/0456 ,  H03M7/30 ,  H04B7/06

CPC classification number: H04B7/0469 ,  H03M7/3068 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0626 ,  H04B7/0658 ,  H03M7/3082 ,  H04B7/0639

Abstract: A network node signals to a wireless communication device which precoders in a codebook are restricted from being used. The network node in this regard generates codebook subset restriction signaling that, for each of one or more groups of precoders, jointly restricts the precoders in the group by restricting a certain component (e.g., a certain beam precoder) that the precoders in the group have in common. This signaling may be for instance rank-agnostic signaling that jointly restricts the precoders in a group without regard to the precoders' transmission rank. Regardless, the network node sends the generated signaling to the wireless communication device.

公开(公告)号：US11863251B2

公开(公告)日：2024-01-02

申请号：US17882120

申请日：2022-08-05

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Sebastian Faxér ,  Shiwei Gao ,  Robert Mark Harrison ,  Siva Muruganathan

IPC: H04B7/0417 ,  H04B7/0456 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/065 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0658

Abstract: Systems and methods for multi-beam Channel State Information (CSI) reporting are provided. In some embodiments, a method of operation of a second node connected to a first node in a wireless communication network for reporting multi-beam CSI includes reporting a rank indicator and a beam count indicator in a first transmission to the first node. The method also includes reporting a cophasing indicator in a second transmission to the first node. The cophasing indicator identifies a selected entry of a codebook of cophasing coefficients where the number of bits in the cophasing indicator is identified by at least one of the beam count indicator and the rank indicator. In this way, feedback for both a rank indicator and a beam count indicator may be possible which may allow robust feedback and variably sized cophasing and beam index indicators.

公开(公告)号：US11848736B2

公开(公告)日：2023-12-19

申请号：US17334207

申请日：2021-05-28

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Sameer Pawar ,  Wook Bong Lee ,  Yushu Zhang ,  Victor Sergeev ,  Joonyoung Cho ,  Dmitry Dikarev

IPC: H04B7/06

CPC classification number: H04B7/0658 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0634

Abstract: Herein described are apparatuses, systems, and methods for measurement and reporting of channel state information within wireless network systems. In embodiments, an apparatus for a user equipment (UE) may include memory to store a rank indicator (RI), a precoding matrix index (PMI), and a channel quality indicator (CQI) of channel state information (CSI) for the UE. The apparatus may further include circuitry to concatenate the RI, the PMI, and the CQI to produce a concatenated CSI element, generate a CSI report that includes the concatenated CSI element, and cause the CSI report to be transmitted to a base station within a single slot. Other embodiments may be described and/or claimed.

公开(公告)号：US11757499B2

公开(公告)日：2023-09-12

申请号：US17190034

申请日：2021-03-02

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Sebastian Faxér ,  Shiwei Gao ,  Robert Mark Harrison ,  Siva Muruganathan

IPC: H04B7/0456 ,  H04B7/06 ,  H04L1/16 ,  H04L5/00 ,  H04L1/1607

CPC classification number: H04B7/0478 ,  H04B7/0469 ,  H04B7/0473 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0658 ,  H04L1/1614 ,  H04L5/0048

Abstract: Example embodiments are presented for codebook subset restriction and precoder selection in wireless communications systems. For instance, an example method for codebook subset restriction at a user equipment (UE) is presented. In the example method, the UE can receive, from a network node such as a gNB, codebook subset restriction (CBSR) signaling for a first component common to precoders in a first group of codebooks. In an aspect of the present disclosure, a restriction of the first component maps to a restriction of a second component and the second component is common to precoders in a second group of codebooks. In addition, the example method includes restricting precoders selectable from a codebook in the second group of codebooks based on the second component. Network-side methods are presented, as well as example UEs and network nodes.

公开(公告)号：US11736162B2

公开(公告)日：2023-08-22

申请号：US17470567

申请日：2021-09-09

Applicant: LG ELECTRONICS INC.

Inventor： Haewook Park ,  Kijun Kim ,  Sangrim Lee

IPC: H04B7/06 ,  H04B7/0456 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04B7/0486 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0658 ,  H04L5/0051 ,  H04L27/2636

Abstract: Disclosed are a method for transmitting and receiving channel state information in wireless communication system and an apparatus therefor. Specifically, a method for transmitting, by a user equipment (UE), Channel State Information (CSI) in a wireless communication system may include: receiving, from a base station, a channel state information reference signal (CSI-RS) through multiple antenna ports; and reporting, to the base station, CSI, in which the CSI may include selection information indicating a plurality of codewords used for generating a precoding matrix in a codebook for reporting the CSI, and a power coefficient, a phase offset, and a phase shift value applied to each of the plurality of codewords in terms of a configured bandwidth, and the precoding matrix may be generated in units of subbands within the configured bandwidth based on a linear combination of the power coefficient, the phase offset, and the phase change value.