公开(公告)号：US20230040058A1

公开(公告)日：2023-02-09

申请号：US17759060

申请日：2020-01-20

Applicant: QUALCOMM INCORPORATED

Inventor： Min HUANG ,  Chao WEI ,  Yu ZHANG ,  Chenxi HAO ,  Liangming WU ,  Qiaoyu LI ,  Hao XU

IPC: H04B7/0456

Abstract: Methods, systems, and devices for wireless communications are described to support communication between a base station and a user equipment (UE) via multiple transmission reception points (TRPs). The base station may configure the UE to report a precoding matrix indicator (PMI) for various transmission modes, including one or more transmission modes for multiple TRPs. The UE may determine and report first PMI to the base station for each single TRP transmission mode, and the base station may use the first PMI to determine a precoding matrix for each TRP. The UE may determine and report partial PMI to the base station for the one or more multi-TRP transmission modes. The base station may use respective partial PMI to determine a precoding matrix for each multi-TRP transmission mode and may communicate with the UE using the determined precoding matrix or matrices.

公开(公告)号：US20220386338A1

公开(公告)日：2022-12-01

申请号：US17771694

申请日：2019-12-06

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Chenxi HAO ,  Liangming WU ,  Yu ZHANG ,  Chao WEI ,  Hao XU ,  Wanshi CHEN ,  Peter GAAL

IPC: H04W72/12 ,  H04B7/0456

Abstract: Certain aspects of the present disclosure provide techniques for using subband precoding for uplink transmissions. In some cases, a UE may receive, from a network entity, at least one of a first downlink control information (DCI) or a second DCI, each DCI indicating at least one of one or more sets of one or more frequency domain (FD) bases and linear combination coefficients and transmit a PUSCH with subband precoding determined based on the first DCI, the second DCI, or a combination of the first and second DCI, depending on whether the first DCI is received, the second DCI is received, or both the first and second DCI are received.

公开(公告)号：US20220352949A1

公开(公告)日：2022-11-03

申请号：US17763241

申请日：2019-09-27

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

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

IPC: H04B7/06 ,  H04B17/318

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine to use one or more channel state information (CSI) omission configurations for omitting portions of a CSI report. For example, a UE may receive a trigger to report CSI, and the UE may identify that a payload of the CSI report exceeds a capacity of resources for transmitting the report. As such, the UE may determine to use one or more CSI omission configurations, where each CSI omission configuration may correspond to dropping different portions of the CSI report. The selection of the CSI omission configuration to use may be based on a set of parameters associated with CSI reporting. In some cases, the UE selects the CSI omission configuration based on an explicit indication from the base station. Additionally or alternatively, the UE may implicitly determine the CSI omission configuration based on the parameters.

公开(公告)号：US20220329308A1

公开(公告)日：2022-10-13

申请号：US17620974

申请日：2020-06-10

Applicant: Qualcomm Incorporated

Inventor： Min HUANG ,  Qiaoyu LI ,  Liangming WU ,  Sony AKKARAKARAN

IPC: H04B7/06 ,  H04L5/14 ,  H04L5/00 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communications are described for a user equipment (UE) operating in a full-duplex mode to report of channel state information based on an estimate of self-interference associated with concurrent uplink and downlink transmissions using at least partially overlapping frequency resources. A base station may transmit downlink reference signals to the UE for measurement and generation of the channel state information, and the base station may use the channel state information reported by the UE to schedule the simultaneous transmission and reception such that the self-interference from full-duplex mode operations is mitigated.

公开(公告)号：US20220255604A1

公开(公告)日：2022-08-11

申请号：US17597617

申请日：2020-08-21

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Chenxi HAO ,  Qiaoyu LI ,  Min HUANG ,  Yu ZHANG ,  Wanshi CHEN ,  Chao WEI

IPC: H04B7/06 ,  H04L5/00 ,  H04L1/16

Abstract: The frequency domain basis may be fed back in a CSI report from a user equipment (UE), with extra overhead and computation cost. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE configured to receive, from a base station, CSI reference signals (CSI-RS). The apparatus may be further configured to receive, from the base station, a configuration including a frequency domain basis restriction indicating a frequency domain basis subset, where the frequency domain basis subset is selected from a frequency domain basis set. The apparatus may be configured to prepare, upon receiving the frequency domain basis restriction, a CSI report based on the CSI-RS and the frequency domain basis subset. The apparatus may be further configured to transmit the CSI report to the base station.

公开(公告)号：US20220191800A1

公开(公告)日：2022-06-16

申请号：US17593112

申请日：2019-04-06

Applicant: QUALCOMM Incorporated

Inventor： Min HUANG ,  Chao WEI ,  Yuwei REN ,  Yu ZHANG ,  Qiaoyu LI ,  Chenxi HAO ,  Liangming WU ,  Hao XU

IPC: H04W52/14 ,  H04W52/10 ,  H04W52/08 ,  H04W52/24

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive an indication of a first transmit power configuration and a second transmit power configuration for a physical uplink shared channel (PUSCH) communication. The wireless communication device may transmit, using a first transmit power that is based at least in part on the first transmit power configuration, a first portion of the PUSCH communication in a full-duplex portion of a time-frequency resource. The wireless communication device may transmit, using a second transmit power that is based at least in part on the second transmit power configuration, a second portion of the PUSCH communication in a non-full-duplex portion of the time-frequency resource. Numerous other aspects are provided.

公开(公告)号：US20220140842A1

公开(公告)日：2022-05-05

申请号：US17512289

申请日：2021-10-27

Applicant: QUALCOMM Incorporated

Inventor： Kai CHEN ,  Liangming WU ,  Changlong XU ,  Jing JIANG ,  Hao XU

IPC: H03M13/09 ,  H03M13/15 ,  H03M13/00 ,  H04L1/00

Abstract: Certain aspects of the present disclosure generally relate to techniques for encoding and decoding bits of information using cyclic redundancy check (CRC) concatenated polar encoding and decoding. The CRC concatenated polar encoding techniques may avoid transmission of dummy bits. A method generally includes obtaining the bits of information to be transmitted. The method includes performing CRC outer encoding of the bits of information using an even-weighted generator polynomial to produce CRC encoded bits. The method includes performing polar inner encoding of the CRC encoded bits to generate a codeword. The method includes discarding a first code bit at a beginning of the codeword. The shortened codeword is transmitted over a wireless medium. In another method, bit-level scrambling is performed on the CRC encoded bits before the polar encoding to avoid generating a dummy bit. In another method, only odd-weighted generator polynomials are selected to avoid generating the dummy bit.

公开(公告)号：US20220131589A1

公开(公告)日：2022-04-28

申请号：US17310444

申请日：2020-02-04

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Liangming WU ,  Chenxi HAO ,  Yu ZHANG ,  Chao WEI ,  Hao XU ,  Parisa CHERAGHI ,  Wanshi CHEN

IPC: H04B7/06

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit, in a first part of two-part channel state information (CSI), a rank indication (RI) and an indication of one or more numbers of first transfer domain coefficients to be used to characterize compressed CSI for one or more layers; and transmit, in a second part of the two-part CSI, an indication of one or more numbers of second transfer domain coefficients to be used to characterize compressed CSI for one or more beams for the one or more layers. Numerous other aspects are provided.

公开(公告)号：US20220110147A1

公开(公告)日：2022-04-07

申请号：US17426556

申请日：2020-01-23

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Chao WEI ,  Yu ZHANG ,  Liangming WU ,  Chenxi HAO ,  Min HUANG ,  Hao XU ,  Peter GAAL ,  Wanshi CHEN ,  Juan MONTOJO

IPC: H04W72/12 ,  H04B7/06 ,  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 (BS), a first signaling communication that configures a plurality of transmit precoder matrix indicator (TPMI) and sounding reference signal (SRS) resource indicator (SRI) pairs. The plurality of TPMI and SRI pairs may be for transmitting respective physical uplink shared channel (PUSCH) communications to the BS. The UE may receive, from the BS, a second signaling communication that indicates an update to a TPMI and SRI pair of the plurality of TPMI and SRI pairs. The UE may transmit, to the BS, a PUSCH communication, of the respective PUSCH communications, based at least in part on the update to the TPMI and SRI pair. Numerous other aspects are provided.

公开(公告)号：US20220029675A1

公开(公告)日：2022-01-27

申请号：US17312074

申请日：2019-12-20

Applicant: Min HUANG ,  Chao WEI ,  Chenxi HAO ,  Liangming WU ,  Qiaoyu Qiaoyu ,  Qualcomm Incorporated

Inventor： Min HUANG ,  Chao WEI ,  Chenxi HAD ,  Liangming WU ,  Qiaoyu LI

IPC: H04B7/0456 ,  H04B7/06

Abstract: 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.