公开(公告)号：US11509367B2

公开(公告)日：2022-11-22

申请号：US17312074

申请日：2019-12-20

申请人： Qualcomm Incorporated ,  Min Huang ,  Chao Wei ,  Chenxi Hao ,  Liangming Wu ,  Qiaoyu Li

发明人： Min Huang ,  Chao Wei ,  Chenxi Hao ,  Liangming Wu ,  Qiaoyu Li

IPC分类号： H04L23/02 ,  H04B7/0456 ,  H04B7/06

摘要： 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：US11177862B2

公开(公告)日：2021-11-16

申请号：US16088285

申请日：2017-05-10

申请人： QUALCOMM Incorporated ,  Chao Wei ,  Yu Zhang ,  Bo Chen ,  Jilei Hou

发明人： Chao Wei ,  Yu Zhang ,  Bo Chen ,  Jilei Hou

IPC分类号： H04W4/00 ,  H04B7/0452 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/06 ,  H04L5/00

摘要： A hybrid class B channel state information (CSI) reference signal (CSI-RS) scheme is discussed which configures one cell-common beamformed CSI-RS resource for beam tracking and another UE-specific beamformed CSI-RS resource for CSI feedback. The cell-common beamformed CSI-RS resource may be transmitted at a longer periodicity and shared by user equipments (UEs) in the cell. The beamforming may be cycled over a set of predefined weights transparent to UE. The UE-specific beamformed CSI-RS may be transmitted at a shorter periodicity and can be activated dynamically to allow resource sharing among multiple UEs. The UEs will report a CSI for the cell-common beamformed CSI-RS resource which provides a quality indicator for the associated cell-common beam and is utilized by the base station to determine the precoding weight for the UE-specific beamformed CSI-RS resource. Both resources can be configured with different parameter sets, such as number of ports, codebook type, and CSI reporting parameters.

公开(公告)号：US11171672B2

公开(公告)日：2021-11-09

申请号：US16471388

申请日：2018-01-16

申请人： Jian Li ,  Changlong Xu ,  Chao Wei ,  Jilei Hou ,  Jing Jiang ,  QUALCOMM Incorporated

发明人： Jian Li ,  Changlong Xu ,  Chao Wei ,  Jilei Hou ,  Jing Jiang

IPC分类号： H03M13/35 ,  H03M7/30 ,  H03M13/09 ,  H03M13/13 ,  H03M13/29 ,  H04L1/00

摘要： Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for dynamic frozen polar codes, for example, for control channels. An exemplary method may be performed at the encoder. The method generally includes encoding a stream of bits using a polar code. The encoding includes selecting a first set of channel indices for encoding information bits. The encoding includes selecting a second set of the channel indices smaller than a channel index for a first information bit for encoding fixed frozen bits. The encoding includes selecting remaining channel indices for dynamic frozen (PCF) bits having values based on one or more of the information bits. The method includes transmitting the encoded stream of bits.

公开(公告)号：US11057151B2

公开(公告)日：2021-07-06

申请号：US16487050

申请日：2017-12-14

申请人： QUALCOMM Incorporated ,  Yang Yang ,  Jing Jiang ,  Gabi Sarkis ,  Chao Wei ,  Jian Li ,  Changlong Xu ,  Hari Sankar ,  Joseph Binamira Soriaga

发明人： Yang Yang ,  Jing Jiang ,  Gabi Sarkis ,  Chao Wei ,  Jian Li ,  Changlong Xu ,  Hari Sankar ,  Joseph Binamira Soriaga

IPC分类号： H04L1/00 ,  G06N7/00 ,  H03M13/01 ,  H03M13/13

摘要： Methods, systems, and devices for wireless communication are described for mutual information based polar code construction. A wireless device may receive a codeword over a wireless channel, the codeword encoded using a polar code. The wireless device may identify a set of bit locations of the polar code corresponding to information bits of an encoded information bit vector. The set of bit locations may be determined based at least in part on a reliability order of the bit locations of the polar code, and the reliability order may be determined based at least in part on a recursive model that includes at least one mutual information transfer function that is applied at each polarization stage of multiple polarization stages of the polar code. The wireless device may decode the received codeword to obtain the information bit vector at the set of bit locations.

公开(公告)号：US10944517B2

公开(公告)日：2021-03-09

申请号：US16078480

申请日：2016-11-04

申请人： Jian Li ,  Changlong Xu ,  Jilei Hou ,  Neng Wang ,  Chao Wei ,  QUALCOMM Incorporated

发明人： Jian Li ,  Changlong Xu ,  Jilei Hou ,  Neng Wang ,  Chao Wei

IPC分类号： H04L1/18 ,  H03M13/13 ,  H03M13/29 ,  H04L1/00 ,  H04L1/20 ,  H03M13/00 ,  H04W72/04

摘要： For communication utilizing polar codes, a hybrid automatic repeat request algorithm utilizing incremental redundancy (HARQ-IR) may provide increased throughput by including new data, not based on an original transmission, in a HARQ retransmission. The number of retransmitted bits and new information bits in each HARQ retransmission may be controlled in order to manage a tradeoff between increased throughput and a decreased block error rate (BLER).

公开(公告)号：US20200100214A1

公开(公告)日：2020-03-26

申请号：US16467454

申请日：2018-01-24

申请人： Chao WEI ,  Jilei HOU ,  Changlong XU ,  Jian LI ,  Qualcomm Incorporated

发明人： Chao Wei ,  Changlong Xu ,  Jilei Hou ,  Jian Li

IPC分类号： H04W72/00 ,  H04W56/00 ,  H04L1/00 ,  H04L1/18

摘要： Methods, systems, and devices for wireless communication are described. In order to exchange data over a given wireless communication network, a wireless device may first perform a cell acquisition procedure (e.g., to determine cell-specific information such as timing and frequency offsets, bandwidth, control channel formatting, etc.). In some systems, aspects of the timing information may be conveyed with scrambling codes applied to a master information block (MIB). Physical broadcast channel (PBCH) payloads, including MIB transmissions, may be jointly encoded with synchronization signal indices. Bursts of MIB transmissions may thus be decoded without blind decoding while maintaining error protection and low latency that may be necessary to obtain critical system information within the MIB.

公开(公告)号：US10367632B2

公开(公告)日：2019-07-30

申请号：US15546219

申请日：2016-03-04

申请人： Peng Cheng ,  Yin Huang ,  Neng Wang ,  Chao Wei ,  QUALCOMM Incorporated

发明人： Peng Cheng ,  Yin Huang ,  Neng Wang ,  Chao Wei

IPC分类号： H04W72/04 ,  H04L5/14 ,  H04W76/27 ,  H04B7/06 ,  H04L1/16 ,  H04L1/18 ,  H04L5/00 ,  H04W72/08

摘要： Aspects described herein generally relate to communicating between a user equipment (UE) and a cell using frequency division duplexing (FDD) to separate an uplink frequency band and a downlink frequency band with the cell. An indicator can be transmitted from the cell and received by the UE to implement time division duplexing (TDD) on the uplink frequency band. Based at least in part on the indicator, communicating between the UE and the cell can include separating the uplink frequency band into a plurality of downlink subframes for receiving downlink communications from the cell and a plurality of uplink subframes for transmitting uplink communications to the cell.

公开(公告)号：US09986501B2

公开(公告)日：2018-05-29

申请号：US14782300

申请日：2013-04-09

申请人： QUALCOMM INCORPORATED ,  Minghai Feng ,  Neng Wang ,  Chao Wei ,  Jilei Hou

发明人： Minghai Feng ,  Neng Wang ,  Chao Wei ,  Jilei Hou

IPC分类号： H04W48/20 ,  H04W72/12 ,  H04B7/024 ,  H04B7/06 ,  H04W16/10 ,  H04W74/00 ,  H04J11/00 ,  H04W84/04 ,  H04W84/02 ,  H04W88/02 ,  H04W88/08

CPC分类号： H04W48/20 ,  H04B7/024 ,  H04B7/06 ,  H04B7/0608 ,  H04J11/005 ,  H04W16/10 ,  H04W72/1226 ,  H04W74/002 ,  H04W84/02 ,  H04W84/045 ,  H04W88/02 ,  H04W88/08

摘要： Methods and apparatus are disclosed for interference management. The interference management is based on dynamic point selection or semi-static point selection. The method includes determining interference at a plurality of network nodes. The method includes selecting a transmission point from the plurality of network nodes for a transmission to at least one mobile entity based on the determined interference.

公开(公告)号：US20160050002A1

公开(公告)日：2016-02-18

申请号：US14784165

申请日：2013-10-14

申请人： Chao WEI ,  Peng CHENG ,  Jilei HOU ,  QUALCOMM INCORPORATED

发明人： Chao Wei ,  Peng CHENG ,  Jilei HOU

IPC分类号： H04B7/06 ,  H04B7/04 ,  H04W72/04

CPC分类号： H04B7/0617 ,  H04B7/0469 ,  H04B7/0478 ,  H04W72/04 ,  H04W88/02

摘要： Flexible beamforming is disclosed in which a base station receives feedback from a user equipment (UE), in which the feedback is related to one or more reference signals transmitted by the base station. The base station will obtain a tilt adjustment based, at least in part, on the feedback and generate an elevation precoding vector based using the feed-back. Using the tilt adjustment and elevation precoding vector, the base station may then perform elevation beamforming with an antenna array of the base station for the UE.

摘要翻译： 公开了灵活的波束成形，其中基站从用户设备（UE）接收反馈，其中反馈与由基站发送的一个或多个参考信号有关。 基站将至少部分地基于反馈获得倾斜调整，并且基于反馈生成升高预编码向量。 使用倾斜调整和仰角预编码矢量，基站然后可以执行用于UE的基站的天线阵列的仰角波束成形。

公开(公告)号：US11865734B2

公开(公告)日：2024-01-09

申请号：US17394308

申请日：2021-08-04

申请人： Chao Wei

发明人： Chao Wei

IPC分类号： B26B13/06 ,  B26B13/20

CPC分类号： B26B13/06 ,  B26B13/20

摘要： A pair of slide cutting shears that have identical cutting angles of approximately 53 degrees on the thumb and finger blades, and where the thumb blade has approximately only 40% of the top end of the blade sharpened and the remaining section of the working blade is radiused and cannot cut. The shears have a four finger grip, and adjustable bump stop and a tightenable pivot pin assembly to draw the blades closer.