公开(公告)号：US20220131589A1

公开(公告)日：2022-04-28

申请号：US17310444

申请日：2020-02-04

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Liangming WU ,  Chenxi HAO ,  Yu ZHANG ,  Chao WEI ,  Hao XU ,  Parisa CHERAGHI ,  Wanshi CHEN

IPC: H04B7/06

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit, in a first part of two-part channel state information (CSI), a rank indication (RI) and an indication of one or more numbers of first transfer domain coefficients to be used to characterize compressed CSI for one or more layers; and transmit, in a second part of the two-part CSI, an indication of one or more numbers of second transfer domain coefficients to be used to characterize compressed CSI for one or more beams for the one or more layers. Numerous other aspects are provided.

公开(公告)号：US20220110147A1

公开(公告)日：2022-04-07

申请号：US17426556

申请日：2020-01-23

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Chao WEI ,  Yu ZHANG ,  Liangming WU ,  Chenxi HAO ,  Min HUANG ,  Hao XU ,  Peter GAAL ,  Wanshi CHEN ,  Juan MONTOJO

IPC: H04W72/12 ,  H04B7/06 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station (BS), a first signaling communication that configures a plurality of transmit precoder matrix indicator (TPMI) and sounding reference signal (SRS) resource indicator (SRI) pairs. The plurality of TPMI and SRI pairs may be for transmitting respective physical uplink shared channel (PUSCH) communications to the BS. The UE may receive, from the BS, a second signaling communication that indicates an update to a TPMI and SRI pair of the plurality of TPMI and SRI pairs. The UE may transmit, to the BS, a PUSCH communication, of the respective PUSCH communications, based at least in part on the update to the TPMI and SRI pair. Numerous other aspects are provided.

公开(公告)号：US20220029675A1

公开(公告)日：2022-01-27

申请号：US17312074

申请日：2019-12-20

Applicant: Min HUANG ,  Chao WEI ,  Chenxi HAO ,  Liangming WU ,  Qiaoyu Qiaoyu ,  Qualcomm Incorporated

Inventor： Min HUANG ,  Chao WEI ,  Chenxi HAD ,  Liangming WU ,  Qiaoyu LI

IPC: H04B7/0456 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described that provide for channel state information (CSI) feedback for multiple discrete Fourier transform (DFT) beams on multiple transmission layers. A user equipment (UE) may report a total number of non-zero power DFT beams across all of the transmission layers. The UE may be configured with a total number of leading beams (Ktotal) across all of the transmission layers for which to provide high quantization feedback. When the total number of non-zero DFT beams across all the transmission layers exceeds the configured total number of leading beams across all the transmission layers, the UE may report high-resolution quantization feedback for Ktotal non-zero power precoding coefficients having the highest amplitude coefficients, and may report low-resolution quantization feedback for the remaining non-zero power precoding coefficients. A base station may receive the CSI feedback to determine a precoding matrix.

公开(公告)号：US20210384945A1

公开(公告)日：2021-12-09

申请号：US17309469

申请日：2019-12-12

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Chenxi HAO ,  Liangming WU ,  Joseph Binamira SORIAGA ,  Wanshi CHEN ,  Peter GAAL

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

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify, based at least in part on a codebook, a set of beams to feedback in a channel state information (CSI) feedback communication, and may identify one or more beam groups associated with the set of beams. The UE may select respective one or more transfer domain bases, from a plurality of transfer domain bases, for each beam group of the one or more beam groups, and may determine a plurality of values, for a plurality of bits, that represent beam group identification information associated with the one or more beam groups and transfer domain basis selection information associated with the respective one or more transfer domain bases. The may transmit, to a base station (BS), the plurality of bits in the CSI feedback communication. Numerous other aspects are provided.

公开(公告)号：US20210288663A1

公开(公告)日：2021-09-16

申请号：US16757794

申请日：2018-11-14

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Changlong XU ,  Jing JIANG ,  Gabi SARKIS ,  Yu ZHANG ,  Kai CHEN

IPC: H03M13/09 ,  H03M13/00 ,  H03M13/13 ,  H04L1/00

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for segmenting uplink control information prior for encoding using a polar code prior to transmission. An exemplary method that may be performed by a wireless device generally includes iteratively segmenting a group of K information bits into a plurality of segments, encoding the information bits of each of the plurality of segments using a polar code to generate a plurality of encoded segments, and transmitting the plurality of encoded segments.

公开(公告)号：US20210160104A1

公开(公告)日：2021-05-27

申请号：US16636531

申请日：2018-08-10

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

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

IPC: H04L25/02 ,  H04L5/00 ,  H04B7/0456 ,  H04W72/04

Abstract: Techniques and apparatus for configuring transmission rank and/or precoder(s) to support uplink non-codebook based transmission are provided. One technique includes receiving sounding reference signal (SRS) resource(s) from a user equipment (UE), where each SRS resource is associated with one or more precoded ports. At least one of a transmission rank or a set of precoders is determined based on the SRS resource(s). An indication of at least one of the SRS resource(s) is signaled to the UE. The UE uses the indication of the at least one of the SRS resource(s) to send an uplink transmission.

公开(公告)号：US20210036745A1

公开(公告)日：2021-02-04

申请号：US16964519

申请日：2019-01-25

Applicant: Liangming WU ,  Yu ZHANG ,  Chao WEI ,  Qiaoyu LI ,  Chenxi HAO ,  Hao XU ,  QUALCOMM Incorporated

Inventor： Liangming WU ,  Yu ZHANG ,  Chao WEI ,  Qiaoyu LI ,  Chenxi HAO ,  Hao XU

IPC: H04B7/0456 ,  H04B7/06

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, configuration information indicating that the UE is to compress a precoding matrix indicator in connection with channel state information reporting, wherein the precoding matrix indicator is to be compressed based at least in part on a quantization dependency between transmission layers or an orthogonality relationship between the transmission layers, and wherein the configuration information is associated with a type II, higher rank codebook for multiple input multiple output configuration. The UE may transmit, to a base station (BS), the compressed precoding matrix indicator to the base station based at least in part on receiving the configuration information. The UE and BS may use a communication configuration based at least in part on a precoding matrix indicator recovered from the compressed precoding matrix indicator. Numerous other aspects are provided.

公开(公告)号：US20200295895A1

公开(公告)日：2020-09-17

申请号：US16650056

申请日：2018-09-28

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W72/04

Abstract: Certain aspects of the present disclosure relate to methods and apparatus relating to rate matching for new radio (NR) physical downlink shared channel (PDSCH) and physical uplink shared channel (PUSCH). In certain aspects, a method includes receiving a rate matching resource (RMR) configuration from a serving cell. The method also includes identifying one or more first resource elements (REs) to be rate matched around at least in part based on a transmission numerology associated with the RMR configuration, wherein the one or more first REs are used for reference signal (RS) transmission in the serving cell or a neighboring cell. The method further includes mapping a physical downlink shared channel (PDSCH) to one or more second REs not including the first REs.

公开(公告)号：US20200259505A1

公开(公告)日：2020-08-13

申请号：US16636499

申请日：2017-08-12

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Liangming WU ,  Hao XU

IPC: H03M13/15

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching a stream of bits encoded using polar codes. An exemplary method generally includes encoding K information bits using a polar code with a mother code length, N, to generate a stream of encoded bits storing a portion of the encoded bits in a circular buffer of size N reordering P blocks of the circular buffer according to row weights of a Hadamard matrix J interlacing the encoded bits of the blocks having a same row weight selecting, based on the row weights, a subset of the encoded bits in the blocks to modify modifying the selected subset of the encoded bits and transmitting the encoded bits in the P blocks, subsequent to modifying the selected subset of the encoded bits, via transmission resources.

公开(公告)号：US20200235796A1

公开(公告)日：2020-07-23

申请号：US16650171

申请日：2018-09-29

Applicant: QUALCOMM Incorporated

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

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

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for generating and reporting CSI.