公开(公告)号：US20210328644A1

公开(公告)日：2021-10-21

申请号：US17274412

申请日：2018-09-21

Applicant: Chenxi HAO ,  Yu ZHANG ,  Liangming WU ,  Qiaoyu LI ,  Wanshi CHEN ,  Peter GAAL ,  QUALCOMM Incorporated

Inventor： Chenxi HAO ,  Yu ZHANG ,  Liangming WU ,  Qiaoyu LI ,  Wanshi CHEN ,  Peter GAAL

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

Abstract: Certain aspects of the present disclosure provide techniques for a channel state information (CSI) report configuration for a multiple transmission reception point (TRP) transmission, such as a non-coherent joint transmission (NCJT). A method by a base station (BS) includes providing a user equipment (UE) with a CSI report configuration. The CSI report configuration is associated with one or more CSI reference signal (RS) resources. Each CSI-RS resource comprising a set of ports or port groups. The BS signals the UE to enable the UE to send a CSI report including CSI for more than one CSI-RS resource or for a CSI-RS resource comprising more than one port group and receives a CSI report from the UE.

公开(公告)号：US20210320704A1

公开(公告)日：2021-10-14

申请号：US17268379

申请日：2018-09-14

Applicant: Chenxi HAO ,  Yu ZHANG ,  Liangming WU ,  Qiaoyu LI ,  Wanshi CHEN ,  Peter GAAL ,  QUALCOMM Incorporated

Inventor： Chenxi HAO ,  Yu ZHANG ,  Liangming WU ,  Qiaoyu LI ,  Wanshi CHEN ,  Peter GAAL

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

Abstract: Certain aspects of the present disclosure provide techniques for a channel state information (CSI) report configuration with a codebook list, for example, for non-coherent joint transmission (NCJT). A method for wireless communication that can be performed by a user equipment (UE) includes receiving a CSI report configuration. The CSI report configuration is associated with one or more CSI reference signal (RS) resources. Each CSI-RS resource includes a set of ports or port groups. The UE receives a list of codebooks associated with the configuration. The UE determines at least one codebook, from the list of codebooks, to apply for one or more triggered CSI-RS resources.

公开(公告)号：US20210159953A1

公开(公告)日：2021-05-27

申请号：US16640150

申请日：2018-09-11

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/0456 ,  H04B7/06

Abstract: Aspects of the present disclosure relate to techniques for codebook subset restriction (CSR). In some cases, a user equipment (UE) receives, from a network entity, codebook subset restriction (CSR) information. The UE determines, based on the CSR information, a restricted beam set for a plurality of antenna panels, determines precoding matrix indicator (PMI) feedback for the antenna panels subject to restricted beam set, and provides the PMI feedback to the network entity.

公开(公告)号：US20210036756A1

公开(公告)日：2021-02-04

申请号：US16982983

申请日：2019-04-03

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

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

IPC: H04B7/06 ,  H04W28/06 ,  H04B7/0456

Abstract: Certain aspects of the present disclosure provide techniques for reducing overhead for channel state information (CSI). Certain aspects provide a method for wireless communication. The method generally includes receiving a channel state information reference signal (CSI-RS), determining one or more feedback components associated with a CSI feedback type based on the CSI-RS, identifying that a payload of the one or more feedback components is to be compressed, compressing the payload, and reporting the compressed payload.

公开(公告)号：US20200244425A1

公开(公告)日：2020-07-30

申请号：US16652614

申请日：2018-09-29

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04B7/0456 ,  H04L1/00

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for generating and encoding bits of CSI report. In some cases, a UE may determine a payload size for channel state information (CSI) reporting based, at least in part, on a supported rank, calculate a packet length for the CSI reporting based on the determined payload size, and encode the CSI for a selected CSI resource index (CRI), based on the payload size and the calculated packet length, to generate a coded packet.

公开(公告)号：US20200084787A1

公开(公告)日：2020-03-12

申请号：US16610989

申请日：2018-08-11

Applicant: Qualcomm Incorporated

Inventor： Chenxi HAO ,  Yu ZHANG

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

Abstract: Methods, systems, and devices for wireless communication are described that provide for the utilization of multiple partial bands used in the transmission of one or more channel state information (CSI) reference signals (CSI-RSs). The partial bands may be non-consecutive in the frequency domain, time domain, or a combination thereof and each of which may be precoder using a different precoder configuration. The time intervals, cycling granularity, and number of ports may vary between partial bands. Using RSs transmitted via the multiple partial bands, a user equipment (UE) may determine a channel state parameter for each partial band, which may be used for channel feedback.

公开(公告)号：US20200059346A1

公开(公告)日：2020-02-20

申请号：US16478822

申请日：2017-02-16

Applicant: QUALCOMM Incorporated

Inventor： Taesang YOO ,  Weiliang ZENG ,  June NAMGOONG ,  Xiaoxia ZHANG ,  Alexandros MANOLAKOS ,  Yu ZHANG ,  Siddhartha MALLIK ,  Joseph Binamira SORIAGA

IPC: H04L5/10 ,  H04L5/00 ,  H04W76/27 ,  H04L1/00 ,  H04B7/0456

Abstract: A method for wireless communications, comprising: signaling, to a user equipment (UE), an indication of one of at least two rules regarding how quasi co-location (QCL) configured for the UE should be applied for one or more DMRS ports; and sending downlink transmission to the UE with the one or more DMRS ports; receiving signaling from a base station and processing signals received on one or more DMRS ports based on the indicated rule. Said method improves communications between access points and stations in a wireless network.

公开(公告)号：US20200045596A1

公开(公告)日：2020-02-06

申请号：US16469451

申请日：2018-01-26

Applicant: QUALCOMM Incorporated

Inventor： Huichun LIU ,  Xipeng ZHU ,  Gavin Bernard HORN ,  Ruiming ZHENG ,  Yu ZHANG ,  Chao WEI ,  Ozcan OZTURK ,  Jae Ho RYU ,  Jiming GUO ,  Peng CHENG

IPC: H04W36/00 ,  H04W36/08 ,  H04W72/04 ,  H04W76/27

Abstract: An apparatus for wireless communication, including a memory and at least one processor coupled to the memory. The at least one processor is configured to receive a pre-allocation resource for a target cell via a handover command and transmit a physical layer acknowledgment based on a target cell downlink packet. The at least one processor is also configured to receive an indication for a communication with the target cell in response to the physical layer acknowledgement and access the target cell using the pre-allocated resource based on the indication for the communication with the target cell.

公开(公告)号：US20190208619A1

公开(公告)日：2019-07-04

申请号：US16214745

申请日：2018-12-10

Applicant: QUALCOMM Incorporated

Inventor： Yu ZHANG ,  Douglas Bruce WHITE

IPC: H05K1/02 ,  H05K9/00 ,  H05K1/05 ,  H05K1/09 ,  H05K3/46 ,  H05K3/40 ,  H05K1/11

Abstract: Disclosed is a printed circuit board (PCB) including a set of stacked metallization layers separated by a set of stacked electrical-insulating layers, respectively, wherein the set of stacked metallization layers includes top metallization layer, bottom metallization layer, and intermediate metallization layer; a via electrically coupled to the top metallization layer, the intermediate metallization layer, and the bottom metallization layer, wherein the top metallization layer, a portion of the via between the top metallization layer and the intermediate metallization layer, and the intermediate metallization layer are configured to route a data signal between a signal-in and a signal-out; and an electromagnetic absorbing material configured to reduce an intensity of a reflected signal resulting from the data signal propagating downward along a stub of the via and reflecting off the bottom metallization layer. The electromagnetic absorbing material may be attached to a bottom of the PCB and/or coaxially attached to the stub.

公开(公告)号：US20190199413A1

公开(公告)日：2019-06-27

申请号：US16324653

申请日：2017-08-11

Applicant: Jay Kumar SUNDARARAJAN ,  Naga BHUSHAN ,  Haitong SUN ,  Tingfang JI ,  Yu ZHANG ,  QUALCOMM Incorporated

Inventor： Jay Kumar SUNDARARAJAN ,  Naga BHUSHAN ,  Haitong SUN ,  Tingfang JI ,  Yu ZHANG ,  Wanshi CHEN

IPC: H04B7/0417 ,  H04W72/14 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/0404 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0634 ,  H04B7/0695 ,  H04W72/14

Abstract: Aspects of the present disclosure provide methods and apparatus for selecting beamforming parameters for uplink transmissions based on an uplink reference signal. An example method generally includes identifying one or more parameters for beamformed transmission to a transmit receive point (TRP), transmitting a reference signal using beamforming in accordance with the identified parameters, and receiving, from the TRP in response to the reference signal, signaling for adjusting the one or more parameters for one or more subsequent beamformed transmissions.