公开(公告)号：US20210159953A1

公开(公告)日：2021-05-27

申请号：US16640150

申请日：2018-09-11

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Yu ZHANG ,  Chenxi HAO ,  Chao WEI ,  Wanshi CHEN ,  Hao XU

IPC: H04B7/0456 ,  H04B7/06

Abstract: Aspects of the present disclosure relate to techniques for codebook subset restriction (CSR). In some cases, a user equipment (UE) receives, from a network entity, codebook subset restriction (CSR) information. The UE determines, based on the CSR information, a restricted beam set for a plurality of antenna panels, determines precoding matrix indicator (PMI) feedback for the antenna panels subject to restricted beam set, and provides the PMI feedback to the network entity.

公开(公告)号：US20210067269A1

公开(公告)日：2021-03-04

申请号：US16960494

申请日：2019-02-06

Applicant: Kai CHEN ,  Liangming WU ,  Jian LI ,  Hao XU ,  QUALCOMM Incorporated

Inventor： Kai CHEN ,  Liangming WU ,  Changlong XU ,  Jian LIN ,  Hao XU

IPC: H04L1/00

Abstract: A method, apparatus, and computer-readable medium for transmitting coded messages to a receiving device including constructing a data vector including a plurality of data bits, transforming the data vector into a u-domain vector, applying a mask to the u-domain vector, encoding the masked u-domain vector with polar encoding to generate a transmission vector, and transmitting, to the receiving device, the transmission vector.

公开(公告)号：US20210036756A1

公开(公告)日：2021-02-04

申请号：US16982983

申请日：2019-04-03

Applicant: Liangming WU ,  Yu ZHANG ,  Chenxi HAO ,  Qiaoyu LI ,  Hao XU ,  Wanshi CHEN ,  QUALCOMM Incorporated

Inventor： Liangming WU ,  Yu ZHANG ,  Chenxi HAO ,  Qiaoyu LI ,  Hao XU ,  Wanshi CHEN

IPC: H04B7/06 ,  H04W28/06 ,  H04B7/0456

Abstract: Certain aspects of the present disclosure provide techniques for reducing overhead for channel state information (CSI). Certain aspects provide a method for wireless communication. The method generally includes receiving a channel state information reference signal (CSI-RS), determining one or more feedback components associated with a CSI feedback type based on the CSI-RS, identifying that a payload of the one or more feedback components is to be compressed, compressing the payload, and reporting the compressed payload.

公开(公告)号：US20210036718A1

公开(公告)日：2021-02-04

申请号：US15733711

申请日：2019-04-02

Applicant: Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jing JIANG ,  Hao XU ,  QUALCOMM INCORPORATED

Inventor： Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jing JIANG ,  Hao XU

IPC: H03M13/13 ,  H03M13/00 ,  H03M13/43 ,  H03M13/45 ,  H04L1/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an encoding device may determine a least reliable subset of information bits included in a set of information bits that includes a predefined active set of information bits to be encoded; may determine a codeword bit to be added to a codeword based at least in part on the least reliable subset of information bits, wherein adding the codeword bit to the codeword improves reliability of the least reliable subset of information bits; may add the codeword bit to the codeword; and may transmit the codeword. Numerous other aspects are provided.

公开(公告)号：US20200244425A1

公开(公告)日：2020-07-30

申请号：US16652614

申请日：2018-09-29

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Chao WEI ,  Yu ZHANG ,  Chenxi HAO

IPC: H04L5/00 ,  H04B7/0456 ,  H04L1/00

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for generating and encoding bits of CSI report. In some cases, a UE may determine a payload size for channel state information (CSI) reporting based, at least in part, on a supported rank, calculate a packet length for the CSI reporting based on the determined payload size, and encode the CSI for a selected CSI resource index (CRI), based on the payload size and the calculated packet length, to generate a coded packet.

公开(公告)号：US20190036579A1

公开(公告)日：2019-01-31

申请号：US16077272

申请日：2017-03-10

Applicant: Chao WEI ,  Bo CHEN ,  Liangming WU ,  Jilei HOU ,  QUALCOMM Incorporated

Inventor： Chao WEI ,  Bo CHEN ,  Liangming WU ,  Jilei HOU

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

Abstract: Enhanced hybrid channel state information (CSI) reference signal (CSI-RS) for full dimension multiple input, multiple output (FD-MIMO) is discussed in which a base station configures a first CSI-RS resource for non-precoded CSI-RS and a second CSI-RS resource for beamformed CSI-RS. The first and second CSI-RS resources are associated with the same CSI process in a hybrid CSI-RS operation. The UE provides a first CSI report including a first rank and precoding matrix indicator (PMI) based on measurement of the non-precoded CSI-RS. The base station may use this first CSI process. CSI report for the beamforming of the beamformed CSI-RS. The UE further provides a second CSI report including a second rank, second PMI, and CQI based on measurement of the beamformed CSI-RS. Additional aspects may provide for a base station to aggregate multiple two-port CSI-RS resource configurations into a single multiport CSI-RS resource configuration that may be dynamically shared between different UEs.

公开(公告)号：US20150043487A1

公开(公告)日：2015-02-12

申请号：US14454660

申请日：2014-08-07

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Sharad Deepak Sambhwani ,  Liangming WU ,  Peyman Razaghi

IPC: H04L5/00

CPC classification number: H04L5/0053 ,  H04L1/0038 ,  H04L5/0016 ,  H04L27/0012 ,  H04L27/2602 ,  H04W28/06 ,  H04W72/042 ,  H04W72/1273

Abstract: An apparatus and method for communication including determining an assignment for one of a plurality of symbol durations in a format combination; determining if at least one bit from one or more first upper channels is available if the assignment is associated with the one or more first upper channels and occupying the one of the plurality of symbol durations with the at least one bit, or if unavailable, occupying the one of the plurality of symbol durations with at least one bit from one or more second upper channels or another first upper channel, wherein the first upper channels and the second upper channels are different; and disabling transmission of format information; or including enabling a BTFD hypothesis testing mode; receiving one or more symbol durations on a physical channel; and attempting to decode the received symbol duration with a first hypothesis that a DCCH channel is not transmitted.

Abstract translation: 一种用于通信的装置和方法，包括以格式组合确定多个符号持续时间中的一个的分配; 如果所述分配与所述一个或多个第一上级信道相关联并且占据所述至少一个比特的所述多个符号持续时间中的一个或者如果不可用，则确定来自一个或多个第一上级信道的至少一个比特是否可用 所述多个符号持续时间中的一个具有来自一个或多个第二上部信道或另一个第一上部信道的至少一个比特，其中所述第一上部信道和所述第二上部信道是不同的; 并禁用格式信息的传输; 或包括启用BTFD假设检验模式; 在物理信道上接收一个或多个符号持续时间; 并且尝试以不发送DCCH信道的第一假设对所接收的符号持续时间进行解码。

公开(公告)号：US20250142389A1

公开(公告)日：2025-05-01

申请号：US18837126

申请日：2022-04-24

Applicant: QUALCOMM Incorporated

Inventor： Jing DAI ,  Chenxi HAO ,  Liangming WU ,  Chao WEI ,  Lei XIAO ,  Faris RASSAM ,  Min HUANG ,  Wei XI ,  Hao XU

IPC: H04W24/10 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive from a network entity, a control message triggering the UE to provide a time-domain aperiodic channel state information (A-CSI) report for indicating time-domain channel state information (CSI) associated with CSI reference signal (CSI-RS) resources within an observation window, where a beginning of the observation window is based on when the control message is received. The UE may perform performing measurements of channel state information reference signals (CSI-RSs) received via the CSI-RS resources that occur within the observation window. The UE may then transmit, to the network entity based on the control message, the time-domain A-CSI report indicating measured time-domain CSI associated with the observation window, where the measured time-domain CSI is based on the measurements.

公开(公告)号：US20250088889A1

公开(公告)日：2025-03-13

申请号：US18773040

申请日：2024-07-15

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Liangming WU ,  Chenxi HAO ,  Yu ZHANG ,  Chao WEI ,  Min HUANG ,  Wanshi CHEN

IPC: H04W24/10 ,  H04L5/00

Abstract: Aspects of the present disclosure relate to wireless communication. In some aspects, a user equipment may determine at least one of: a first number of coefficients to be included in a first set of coefficients in a transfer domain that characterize compressed channel state information (CSI) for a first layer, or a first quantization scheme to be used to interpret the first set of coefficients. The UE may determine at least one of: a second number of coefficients to be included in a second set of coefficients in the transfer domain that characterize the compressed CSI for a second layer, or a second quantization scheme to be used to interpret the second set of coefficients. The UE may transmit a report that identifies the first set of coefficients and the second set of coefficients based at least in part on the determination(s). Other aspects are provided.

公开(公告)号：US20240322870A1

公开(公告)日：2024-09-26

申请号：US18697904

申请日：2021-12-16

Applicant: QUALCOMM Incorporated

Inventor： Chenxi HAO ,  Yu ZHANG ,  Liangming WU ,  Yi HUANG ,  Hao XU ,  Peter GAAL

IPC: H04B7/0456 ,  H04W72/0453

CPC classification number: H04B7/0456 ,  H04W72/0453

Abstract: A method of wireless communication performed by a user equipment (UE), the method including: receiving an indication of uplink (UL) precoding information, wherein the UL precoding information includes a set of frequency domain (FD) bases and coefficients applied to one or more antenna ports; determining a size of the FD bases based at least in part on an item selected from a list consisting of: a dedicated indication, a frequency resource allocation of an UL channel, and an UL bandwidth part (BWP); receiving a grant of a physical uplink shared channel (PUSCH), wherein a frequency resource allocation of the PUSCH includes a plurality of FD units; and determining precoding matrices for the plurality of FD units based at least in part on entries of the set of FD bases, wherein the entries correspond to positions of the FD bases in a range of a frequency resource.