公开(公告)号：US20230275797A1

公开(公告)日：2023-08-31

申请号：US18012876

申请日：2020-08-27

Applicant: QUALCOMM Incorporated

Inventor： Bo CHEN ,  Chenxi HAO ,  Hao XU

IPC: H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2647 ,  H04L5/0005 ,  H04L5/0053

Abstract: A method of wireless communication by a user equipment (UE) includes receiving, from a base station, a receive chain switching configuration for a multi-carrier environment. The UE also receives a physical downlink control channel (PDCCH) on one or more carriers of the multi-carrier environment with multiple receive chains, in accordance with the receive chain switching configuration. The UE decodes downlink control information (DCI) from the PDCCH for physical downlink shared channel (PDSCH) scheduling across multiple carriers in the multi-carrier environment. The UE performs receive chain switching based on the PDSCH scheduling from the decoded DCI and the receive chain switching configuration.

公开(公告)号：US20230144253A1

公开(公告)日：2023-05-11

申请号：US17906791

申请日：2021-03-24

Applicant: QUALCOMM Incorporated

Inventor： Bo CHEN ,  Mingkai NAN ,  Hao XU ,  Sony AKKARAKARAN ,  Alexandros MANOLAKOS

IPC: H04W72/1268 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04W72/1268 ,  H04L5/0051 ,  H04L27/2605

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a collision between a physical uplink shared channel (PUSCH) transmission and a guard period of a sounding reference signal (SRS) transmission, wherein the SRS transmission includes a first SRS transmission and a second SRS transmission, the second SRS transmission uses a first set of one or more antenna ports of the UE, and the PUSCH transmission uses a second set of one or more antenna ports of the UE; and perform an action to mitigate the collision based at least in part on identifying the collision. Numerous other aspects are provided.

公开(公告)号：US20230133970A1

公开(公告)日：2023-05-04

申请号：US17915381

申请日：2020-05-13

Applicant: QUALCOMM INCORPORATED

Inventor： Ruifeng MA ,  Bo CHEN ,  Yu ZHANG ,  Jay Kumar SUNDARARAJAN ,  Yeliz TOKGOZ

IPC: H04W24/10 ,  H04B17/336 ,  H04W16/28

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may receive, from a base station, a control message including an indication associated with a configuration for an interference measurement (IM) report in a channel state information (CSI) report. The UE may determine a setting of the configuration for the IM report based on the indication, which may include one or both of a resource setting associated with IM information in a frequency domain or a spatial setting associated with IM information in a spatial domain. The UE may generate the IM report based on one or both of the resource setting or the spatial setting and may transmit the CSI report including the IM report to the base station.

公开(公告)号：US20230122263A1

公开(公告)日：2023-04-20

申请号：US17905408

申请日：2020-04-24

Applicant: QUALCOMM Incorporated

Inventor： Bo CHEN ,  Yu ZHANG ,  Jay Kumar SUNDARARAJAN ,  Pavan Kumar VITTHALADEVUNI ,  Ruifeng MA ,  Yeliz TOKGOZ ,  Krishna Kiran MUKKAVILLI ,  Hao XU ,  Tingfang JI

IPC: H04L5/00 ,  H04B7/06

Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for a CSI report setting that hastens CSI feedback for SVD-based precoding. More specifically, a UE may receive a configuration from a base station for a CSI report setting for providing DL interference feedback to the base station. The configuration may include information indicating a measurement resource on which an interference measurement is performed for generating the DL interference feedback. The UE may transmit a SRS and the DL interference feedback to the base station, the DL interference feedback being independent of the SRS, such that the UE may receive pre-committed CSI-RS from the base station based on the transmitted SRS and DL interference feedback.

公开(公告)号：US20230009220A1

公开(公告)日：2023-01-12

申请号：US17780175

申请日：2019-11-29

Applicant: Qualcomm Incorporated

Inventor： Yiqing CAO ,  Peter GAAL ,  Chenxi HAO ,  Bo CHEN

IPC: H04W24/08 ,  H04W72/12 ,  H04W74/08 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, an indication of a monitoring window used by the base station to monitor for uplink transmissions from the UE. The UE may receive a control signal scheduling uplink resources for an uplink transmission by the UE on at least a first component carrier, the first component carrier in a first radio frequency spectrum band. The UE may reconfigure, in response to the received control signal, a first transmit chain of the UE from a second component carrier in a second radio frequency spectrum band to the first component carrier in the first radio frequency spectrum band for the uplink transmission. The UE may transmit, based at least in part on the indicated monitoring window and using at least the reconfigured first transmit chain, the uplink transmission on the first component carrier using the scheduled uplink resources.

公开(公告)号：US20220386335A1

公开(公告)日：2022-12-01

申请号：US17755575

申请日：2020-02-11

Applicant: QUALCOMM Incorporated

Inventor： Peter GAAL ,  Yiqing CAO ,  Chenxi HAO ,  Yi HUANG ,  Bo CHEN

IPC: H04W72/12 ,  H04W74/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may group, into a common slot, a first plurality of consecutive uplink slots included in a first component carrier and a second plurality of consecutive uplink slots included in a second component carrier. The UE may determine whether an uplink transmission is scheduled in at least one of the first plurality of consecutive uplink slots or the second plurality of consecutive uplink slots. The UE may transmit on the first component carrier or on the second component carrier in the common slot or determine whether to switch a transmit chain based at least in part on whether an uplink transmission is scheduled in at least one of the first plurality of consecutive uplink slots or the second plurality of consecutive uplink slots. Numerous other aspects are provided.

公开(公告)号：US20220216963A1

公开(公告)日：2022-07-07

申请号：US17595542

申请日：2020-05-28

Applicant: QUALCOMM Incorporated

Inventor： Bo CHEN ,  Chenxi HAO ,  Yu ZHANG ,  Ruifeng MA ,  Pavan Kumar VITTHALADEVUNI ,  Sony AKKARAKARAN ,  Joseph Binamira SORIAGA ,  Krishna Kiran MUKKAVILLI ,  Tingfang JI ,  Hao XU

IPC: H04L5/00 ,  H04L25/02

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a sounding reference signal (SRS) configuration that indicates a maximum number of SRS ports and whether the UE is permitted to determine an actual number of SRS ports to be used for SRS transmission that is different from the maximum number of SRS ports. The UE may determine the actual number of SRS ports to be used for SRS transmission based at least in part on the SRS configuration. The UE may transmit one or more SRSs using the actual number of SRS ports. Numerous other aspects are provided.

公开(公告)号：US20190058560A1

公开(公告)日：2019-02-21

申请号：US16078434

申请日：2017-02-17

Applicant: Bo CHEN ,  Chao WEI ,  Liangming WU ,  Neng WANG ,  QUALCOMM Incorporated

Inventor： Bo CHEN ,  Chao WEI ,  Liangming WU ,  Neng WANG

IPC: H04L5/00 ,  H04W24/08 ,  H04B7/0413 ,  H04W24/10

Abstract: Channel covariance feedback is disclosed for enhanced full-dimension multiple input, multiple output (eFD-MIMO) systems. Channel state information (CSI) reference signal (CSI-RS) feedback operations are implemented using spatial covariance feedback of a covariance estimate. After obtaining a set of orthogonal basis vectors, a user equipment (UE) measures the CSI-RS from a base station and determines the spatial covariance matrix from the signal. The UE may then compress the spatial covariance matrix into a lower-dimension covariance estimate matrix using the orthogonal basis vectors. The lower-dimension matrix along with element-wise quantization allows for feedback of spatial covariance for eFD-MIMO systems without excessive feedback overhead.

公开(公告)号：US20230403118A1

公开(公告)日：2023-12-14

申请号：US18246319

申请日：2020-10-29

Applicant: QUALCOMM Incorporated

Inventor： Kexin XIAO ,  Muhammad Sayed Khairy ABDELGHAFFAR ,  Yu ZHANG ,  Bo CHEN ,  Runxin WANG ,  Yeliz TOKGOZ ,  Krishna Kiran MUKKAVILLI

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

CPC classification number: H04L5/0051 ,  H04L5/0094 ,  H04B7/0628 ,  H04B7/0602 ,  H04B7/0456

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a capability message indicating a first number of one or more transmit antennas supported by the UE for antenna switching and a second number of ports supported for uplink transmission that exceeds the first number of one or more transmit antennas. The UE may receive, based on the capability message, a sounding reference signal (SRS) configuration indicating a mapping between each SRS resource or SRS resource group and a respective bit sequence of a set of bit sequences. The UE may receive a control message comprising one or more bit sequences of the set of bit sequences indicating one or more SRS resources or an SRS resource group based on the mapping. The UE may transmit one or more SRS signals based on the control message.

公开(公告)号：US20230188302A1

公开(公告)日：2023-06-15

申请号：US18004286

申请日：2020-08-31

Applicant: QUALCOMM INCORPORATED

Inventor： Pavan Kumar VITTHALADEVUNI ,  Taesang YOO ,  Naga BHUSHAN ,  June NAMGOONG ,  Bo CHEN ,  Ruifeng MA ,  Krishna Kiran MUKKAVILLI ,  Tingfang JI

IPC: H04L5/00 ,  H04W72/231 ,  G06N3/08

CPC classification number: H04L5/0057 ,  H04L5/0048 ,  H04W72/231 ,  G06N3/08

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques at a user equipment (UE) provide for efficiently reporting channel state information (CSI) to a base station with an appropriate level of accuracy. In particular, the base station may indicate a level of accuracy to the UE for reporting CSI. The UE may encode the CSI using a first neural network, and the base station may decode the CSI using a second neural network. The first and second neural networks may form a neural network pair, and the UE may train the neural network pair based on the level of accuracy indicated by the base station. For example, the base station may indicate a loss function corresponding to a level of accuracy with which CSI is to be reported by the UE, and the UE may train the neural network pair using the loss function.