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.

公开(公告)号：US20160135213A1

公开(公告)日：2016-05-12

申请号：US14308321

申请日：2013-07-04

Applicant: QUALCOMM Incorporated

Inventor： Xipeng ZHU ,  Jun WANG ,  Xiaoxia ZHANG ,  Reza SHAHIDI ,  Ruiming ZHENG ,  Liangming WU

IPC: H04W72/12 ,  H04W24/02

Abstract: Certain aspects of the present disclosure provide a method for wireless communications by a UE. The method generally includes sharing a single transmit chain for communication by at least a first RAT and second RAT, determining a tolerable puncturing rate for the first RAT, and providing assistance information, based on the determined tolerable puncturing rate, to a base station of the second RAT to assist the base station in avoiding scheduling transmissions that would lead to conflict with uplink transmissions in the first RAT. Numerous other aspects are provided.

Abstract translation: 本公开的某些方面提供了一种用于UE的无线通信的方法。 该方法通常包括共享用于由至少第一RAT和第二RAT进行通信的单个发射链，确定第一RAT的可容忍的打孔速率，以及基于所确定的可容忍的打孔速率向基站提供辅助信息 第二RAT以帮助基站避免调度传输，这将导致与第一RAT中的上行链路传输的冲突。 提供了许多其他方面。

公开(公告)号：US20250088330A1

公开(公告)日：2025-03-13

申请号：US18727996

申请日：2022-03-31

Applicant: QUALCOMM Incorporated

Inventor： Min HUANG ,  Jing DAI ,  Liangming WU ,  Wei XI ,  Chao WEI ,  Hao XU

IPC: H04L5/00 ,  H04W24/10 ,  H04W72/231

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit a sounding reference signal (SRS) in multiple slots. A network entity may determine precoding weights in three domains based on the SRS and output reference signals that are precoded based on the precoding weights. The network entity may output control signaling that indicates reference signal resource grouping information that the UE is to use for channel estimations. The reference signal resource grouping information may specify whether the ports in one group are precoded with identical or different spatial, frequency, and time domain weights. A UE may receive the precoded reference signals and the grouping information and report estimated channel metrics and an indication of selected ports per group to the network entity. The network entity may determine precoding in three domains for subsequent downlink communications.

公开(公告)号：US20250056593A1

公开(公告)日：2025-02-13

申请号：US18780063

申请日：2024-07-22

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/542 ,  H04B7/0417 ,  H04B7/0456 ,  H04W72/21

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may perform channel state information (CSI) measurements on one or more reference signal transmissions from a base station; determine, based at least in part on the CSI measurements, a set of non-zero linear combination complex coefficients for weighting and co-phasing for a linear combination of a plurality of frequency domain basis vectors and a plurality of spatial domain basis vectors; and transmit a CSI feedback, wherein a first part of the CSI feedback includes at least an indication of a number of the set of non-zero linear combination complex coefficients with regard to all layers of a communication link between the UE and the base station. Numerous other aspects are provided.