公开(公告)号：US11576151B2

公开(公告)日：2023-02-07

申请号：US17652615

申请日：2022-02-25

Applicant: QUALCOMM Incorporated

Inventor： Runxin Wang ,  Muhammad Sayed Khairy Abdelghaffar ,  Yu Zhang

IPC: H04W72/02 ,  H04W72/04 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, configuration information regarding one or more available slots associated with transmitting sounding reference signal (SRS) information. The UE may receive, from the base station, dynamic downlink communication including slot information for determining a select available slot from among the one or more available slots. The UE may transmit, to the base station, the SRS information during the select available slot, determined based at least in part on the slot information and the configuration information. Numerous other aspects are described.

公开(公告)号：US11483180B2

公开(公告)日：2022-10-25

申请号：US17259207

申请日：2019-07-23

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

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

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

Abstract: 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：US11451279B2

公开(公告)日：2022-09-20

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: H04W4/00 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/0456

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for generating and reporting CSI.

公开(公告)号：US11381289B2

公开(公告)日：2022-07-05

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: H04B7/04 ,  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：US11317306B2

公开(公告)日：2022-04-26

申请号：US15313003

申请日：2014-05-22

Applicant: QUALCOMM INCORPORATED ,  Chao Wei ,  Yu Zhang

Inventor： Chao Wei ,  Yu Zhang

IPC: H04W24/10 ,  H04L5/00 ,  H04B7/06 ,  H04L1/00 ,  H04B7/0456 ,  H04W72/04 ,  H04W72/08 ,  H04B7/0452 ,  H04W88/08

Abstract: Certain aspects of the present disclosure provide techniques for performing periodic and aperiodic CSI reporting for MIMO operations. According to certain aspects, operations for performing periodic and aperiodic CSI reporting for MIMO generally includes configuring a user equipment (UE) that is capable of MIMO with different parameters for periodic and aperiodic channel state information (CSI) reporting, wherein the different parameters indicate at least one of what resources to measure or what information to report, and receiving periodic and aperiodic CSI reporting from the UE according to the configuration.

公开(公告)号：US11258568B2

公开(公告)日：2022-02-22

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：US11233554B2

公开(公告)日：2022-01-25

申请号：US16822711

申请日：2020-03-18

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Yu Zhang ,  Wanshi Chen ,  Peter Gaal

IPC: H04L23/02 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/08 ,  H04L1/00

Abstract: Channel state information (CSI) operations are disclosed with regard to elevation beamforming (EB)/full dimension (FD) multiple input, multiple output (ED/FD-MIMO) operations. With CSI processing associated with multiple CSI-reference signal (CSI-RS) resources, ambiguities may arise in determining the CSI reporting type and rank. CSI reporting type may be determined using a last reported beam selection indicator (BI) or, in the absence of a BI, may be determined according to a predefined rule. When rank and BI are reported separately and rank is absent, user equipment may determine a default reference rank for CSI reporting based on either or both of previously reported rank or BI. When rank and BI are jointly reported, encoding schemes with fixed bitwidths determined based on either CSI-RS processes or resources may be used to enhance decoding. CSI-RS antenna ports, processes, or resources may also be used in determining application of CSI processing relaxation.

公开(公告)号：US11211978B2

公开(公告)日：2021-12-28

申请号：US16964519

申请日：2019-01-25

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/04 ,  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：US20210367647A1

公开(公告)日：2021-11-25

申请号：US16606032

申请日：2017-06-08

Applicant: QUALCOMM Incorporated

Inventor： Liangming Wu ,  Yu Zhang ,  Wanshi Chen

IPC: H04B7/0456 ,  H04B7/06

Abstract: Precoding matrix indicator (PMI) feedback for Type II channel state information (CSI) feedback in new radio (NR) multiple input, multiple output (MIMO) operations is discussed. According to various aspects, a user equipment (UE) determines a plurality of CSI feedback components and identifies a set of discarded ones of these components based on a particular component value of a precoding matrix indicator (PMI) component. The UE may then generate an adjusted CSI report by adjusting how the discarded feedback components are treated. The resulting adjusted CSI report may then be transmitted to a serving base station.

公开(公告)号：US20210359741A1

公开(公告)日：2021-11-18

申请号：US16625591

申请日：2018-06-20

Applicant: Juan MONTOJO ,  Alexei Yurievitch GOROKHOV ,  Peter GAAL ,  Yu ZHANG ,  Joseph Binamira SORIAGA ,  Tingfang JI ,  Hari SANKAR ,  Alexandros MANOLAKOS ,  Qualcomm Incorporated

Inventor： Juan Montojo ,  Alexei Yurievitch Gorokhov ,  Peter Gaal ,  Yu Zhang ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  Hari Sankar ,  Alexandros Manolakos

IPC: H04B7/06 ,  H04B7/0413

Abstract: Techniques are discussed herein identify transmission strategies and to communicate those identified transmission strategies in a transparent communication environment. In some examples, a user equipment (UE) may identify a new transmission strategy for a downlink channel different from a current transmission strategy for the down link channel. The UE may transmit a channel state information (CSI) message that includes an indication of the new transmission strategy identified by the UE. In some examples, a base station may identify the new transmission strategy for the downlink channel. The base station may transmit a codebook subset restriction (CSR) indicator that includes an indication of the new transmission strategy identified by the base station. In some examples, the UE may modify its feedback strategy based on the new transmission strategy.