公开(公告)号：US11483180B2

公开(公告)日：2022-10-25

申请号：US17259207

申请日：2019-07-23

申请人： Qualcomm Incorporated ,  Qiaoyu Li ,  Yu Zhang ,  Chao Wei ,  Chenxi Hao ,  Liangming Wu ,  Hao Xu

发明人： Qiaoyu Li ,  Yu Zhang ,  Chao Wei ,  Chenxi Hao ,  Liangming Wu ,  Hao Xu

IPC分类号： H04L25/02 ,  H04B7/0404 ,  H04B7/0456 ,  H04L5/00 ,  H04W8/24 ,  H04W72/04

摘要： A base station may determine co-phase information and uplink precoding information (e.g., user equipment (UE) precoder information) based on one or more received sounding reference signals (SRSs) from a UE. The UE may adjust precoders or co-phase for different SRS transmissions over the one or more configured SRS resources. As such, the base station may indicate either co-phase information or uplink precoding information via an SRS resource indicator (SRI), and may transmit an explicit indication of the remaining co-phase information or uplink precoding information in addition to the SRI. In other examples (e.g., when only a single SRS resource is configured), the base station may transmit an index corresponding to uplink precoding information, as well as a separate indication of co-phase information. In some cases, a port selection pattern may be included with an explicit indication, indicating a selection of antenna port indices the precoder or co-phase index applies to.

公开(公告)号：US20200052804A1

公开(公告)日：2020-02-13

申请号：US16491307

申请日：2017-08-11

申请人： Chenxi HAO ,  Yu ZHANG ,  Chao WEI ,  Qualcomm Incorporated

发明人： Chenxi Hao ,  Yu Zhang ,  Chao Wei

IPC分类号： H04B17/364 ,  H04B17/24 ,  H04B17/318 ,  H04L5/00 ,  H04B7/06 ,  H04W72/04

摘要： The described techniques relate to improved methods, systems, devices, or apparatuses that support communication schemes for small cyclic delay diversity (SCDD) reference signals. A base station may transmit a control message comprising at least one channel state information (CSI) configuration parameter to a user equipment (UE). The UE may identify a time offset between a plurality of virtual antennas of the base station based at least in part on the CSI configuration parameter. The UE may perform measurements of a plurality of CSI reference signals (CSI-RSs) transmitted by the base station and associated with the virtual antennas. The UE may transmit a feedback message based at least in part on the determined time offset and the measurements of the CSI-RSs.

公开(公告)号：US20230179380A1

公开(公告)日：2023-06-08

申请号：US17997776

申请日：2020-06-12

申请人： Min Huang ,  Yu Zhang ,  Chao Wei ,  Hao Xu ,  Qiaoyu Li ,  Chenxi Hao ,  Liangming Wu ,  Kangqi Liu ,  Jing Dai ,  Tao Luo ,  Wanshi Chen ,  QUALCOMM Incorporated

发明人： Min Huang ,  Yu Zhang ,  Chao Wei ,  Hao Xu ,  Qiaoyu Li ,  Chenxi Hao ,  Liangming Wu ,  Kangqi Liu ,  Jing Dai ,  Tao Luo ,  Wanshi Chen

IPC分类号： H04L5/00 ,  H04L5/14 ,  H04B7/06 ,  H04B7/0456

CPC分类号： H04L5/0057 ,  H04B7/0486 ,  H04B7/0626 ,  H04L5/14 ,  H04L5/0091

摘要： Aspects of the disclosure relate to a wireless user equipment (UE) configured to receive a downlink in a network configured for full duplex communication. The UE receives from the network an indication of a maximum rank of an uplink from an interfering, aggressor UE. The UE measures interference of a signal from the aggressor UE, and based on the measurement, determines one or more rank values for the aggressor UE, less than or equal to the maximum rank. The UE may further determine one or more channel parameters for downlink transmissions the UE receives, corresponding to the determined rank values. The UE then transmits a channel state information (CSI) report that includes an indication of at least one of the one or more rank values for the aggressor UE. The CSI report may further include the determined channel parameters. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20200169364A1

公开(公告)日：2020-05-28

申请号：US16608328

申请日：2018-06-08

申请人： Chenxi HAO ,  Yu ZHANG ,  Liangming WU ,  Chao WEI ,  Wanshi CHEN ,  Qualcomm Incorporated

发明人： Chenxi Hao ,  Yu Zhang ,  Liangming Wu ,  Chao Wei ,  Wanshi Chen

IPC分类号： H04L5/00 ,  H04B7/06 ,  H04W72/14 ,  H04W24/10 ,  H04W72/04 ,  H04L5/14

摘要： Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for communicating an uplink grant and a channel state information reference signal (CSI-RS) trigger. A wireless device may identify e a pending collision for a slot of a carrier between a CSI-RS and uplink data. The wireless device may determine a communication configuration for the CSI-RS and the uplink data such that no collision occurs. The determined communication configuration for the CSI-RS may include delaying one of the colliding signals, transmitting only one of the colliding signals and suppressing the other, or reconfiguring the slot such that both signals can be transmitted successfully. Additionally, the UE and the base station may determine a CSI reporting configuration based on the determined communication configuration.

公开(公告)号：US20200092070A1

公开(公告)日：2020-03-19

申请号：US16615562

申请日：2018-06-12

申请人： Liangming WU ,  Wanshi CHEN ,  Yu ZHANG ,  Chao WEI ,  Chenxi HAO ,  QUALCOMM Incorporated

发明人： Liangming Wu ,  Wanshi Chen ,  Yu Zhang ,  Chao Wei ,  Chenxi Hao

IPC分类号： H04L5/00

摘要： A signaling design for multiple aperiodic channel state information (M-A-CSI) feedback is disclosed. In new radio (NR) networks, there may be scenarios where M-A-CSI are triggered and reported simultaneously. Timing issues may arise because of the different delay periods for difference CSI processes and reporting. In a first aspect, a general set of delay times for the M-A-CSI maybe signaled to the user equipment (UE) from which a candidate set is selected by the UE based on various CSI related settings. An indication from the base station may then be used to select the delay from the candidate set. In a second aspect, a delay period may be selected from the set of delays associated with and corresponding to the M-A-CSI.

公开(公告)号：US20210152303A1

公开(公告)日：2021-05-20

申请号：US16623009

申请日：2018-06-13

申请人： Chenxi HAO ,  Yu ZHANG ,  Wanshi CHEN ,  Chao WEI ,  Qualcomm Incorporated

发明人： Chenxi Hao ,  Yu Zhang ,  Wanshi Chen ,  Cha Wei ,  Liangming Wu

IPC分类号： H04L5/00 ,  H04B7/0456 ,  H04B7/06 ,  H04W24/10

摘要： Methods, systems, devices, and apparatus for wireless communication are described that relate to transmission of a set of precoded reference signals, and using a physical resource group (PRG) size for the resources carrying the set of reference signals for channel estimation at a user equipment (UE). For example, a base station may apply a precoding matrix to a set of reference signals, and the reference signals may be configured on a set of resources. In such cases, the resources including these reference signals having a same precoding may be included in a PRG, and a size of the PRG may refer to a number of precoded reference signals for which the precoding is the same. Based on the received reference signals and the PRG size the UE may perform channel estimation based on the PRG size and transmit channel state information (CSI) to the base station.

公开(公告)号：US11245451B2

公开(公告)日：2022-02-08

申请号：US16642197

申请日：2018-09-08

申请人： Chenxi Hao ,  Yu Zhang ,  Chao Wei ,  Wanshi Chen ,  Hao Xu

发明人： Chenxi Hao ,  Yu Zhang ,  Chao Wei ,  Wanshi Chen ,  Hao Xu

IPC分类号： H04B7/06 ,  H04B17/336 ,  H04W76/27 ,  H04L1/16 ,  H04L5/00 ,  H04W24/10 ,  H04W72/04 ,  H04W80/08

摘要： Certain aspects of the present disclosure relate to communication systems, and more particularly, to a partial channel state information reference signal (CSI-RS) port indication. A method by a base station (BS) includes configuring a user equipment (UE) with a CSI-RS resource, of one or more CSI-RS resources associated with a CSI report. The CSI-RS includes a set of CSI-RS ports. The BS provides a first indication to the UE of a subset of groups of the CSI-RS ports to be used by the UE for channel measurements and/or a second indication to the UE of a subset of groups of the CSI-RS to be used by the UE for interference measurements. Based on the indication, the UE performs channel measurements and/or interference measurements using the indicated subset of CSI-RS ports.

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：US20200244419A1

公开(公告)日：2020-07-30

申请号：US16637067

申请日：2017-08-11

申请人： Alexandros MANOLAKOS ,  Chenxi HAO ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL ,  QUALCOMM Incorporated

发明人： Alexandros Manolakos ,  Chenxi Hao ,  Yu Zhang ,  Wanshi Chen ,  Peter Gaal

IPC分类号： H04L5/00 ,  H04W72/04

摘要： Wireless communication that includes transmission, reception, and configuration of a CSIRS with a configurable band-width is discussed. A base station/gNB may determine a number of antenna ports to be used for wireless communication. The base station/gNB may allocate a first plurality of frequency resources for the transmission of the CSIRS based on the determined number of antenna ports, and may transmit the CSIRS over the first plurality of frequency resources. A mobile device may receive the CSIRS over the first plurality of frequency resources and estimate at least one of channel quality and interference associated with the first plurality of frequency resources based on the received CSIRS.

公开(公告)号：US11990965B2

公开(公告)日：2024-05-21

申请号：US17424819

申请日：2020-01-23

申请人： QUALCOMM Incorporated ,  Chenxi Hao ,  Yu Zhang

发明人： Chenxi Hao ,  Yu Zhang

IPC分类号： H04B7/06 ,  H04B7/0417

CPC分类号： H04B7/0626 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0639

摘要： Certain aspects of the present disclosure provide techniques for channel quality indictor (CQI) reporting with precoding matrix indicator (PMI) frequency domain (FD) units. A user equipment (UE) may configured with a CSI reporting configuration. CQI and PMI may be configured with different FD unit sizes. The UE may determine which PMI FD units to use for calculating corresponding CQI FD units. PMI and CQI FD units may not be aligned. The UE may determine which PMI FD units to use for calculating CQI based on the alignment. PMI and CQI FD units may be configured using a separate bitmaps, a bitmap and ratio of the FD unit sizes, or a single bitmap. PMI and/or CQI FD units may start from a lowest FD unit index in the system bandwidth, or the lowest FD unit index within a configured bandwidth part (BWP).