公开(公告)号：US20200099393A1

公开(公告)日：2020-03-26

申请号：US16494621

申请日：2018-01-11

Applicant: Changlong XU ,  Jian LI ,  Liangming WU ,  Joseph Binamira SORIAGA ,  Jilei HOU ,  Qualcomm Incorporated

Inventor： Changlong Xu ,  Jian Li ,  Liangming Wu ,  Joseph Binamira Soriaga ,  Jilei Hou

IPC: H03M13/09 ,  H03M13/13 ,  H03M13/29 ,  H03M13/00 ,  H04L1/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A transmitter may generate a first segmentation based on a first subset of control information and a second segmentation based on jointly encoding the first subset and a second subset of the control information. The transmitter may polar encode the first segmentation to generate a first codeword and the second segmentation to generate a second codeword, and transmit the first and second codewords. A receiver may determine a first bit sequence corresponding to the first subset based on decoding a first codeword and determine an error detection code (EDC) and a second bit sequence corresponding to the second subset based on decoding a second codeword. The receiver may perform error detection on the first and second bit sequences based on the determined EDC, and output the first bit sequence and the second bit sequence or a decoding error.

公开(公告)号：US10256887B2

公开(公告)日：2019-04-09

申请号：US15928326

申请日：2018-03-22

Applicant: QUALCOMM Incorporated

Inventor： Liangming Wu ,  Yu Zhang

IPC: H04B7/06 ,  H04B7/0456

Abstract: Techniques and apparatus for differential channel state information (CSI) reporting for high resolution CSI are provided. One technique includes receiving a CSI reference signal (CSI-RS). First feedback components associated with first CSI feedback for a first CSI feedback stage are determined based on the CSI-RS, and the first feedback components are reported to a base station. Second feedback components associated with at least one second CSI feedback for at least one second CSI feedback stage are determined based in part on the first feedback components, and the second feedback components are reported to the base station. A precoding for multiple input multiple output (MIMO) communications is determined based on the first feedback components and the second feedback components.

公开(公告)号：US09634814B2

公开(公告)日：2017-04-25

申请号：US15093648

申请日：2016-04-07

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Sharad Deepak Sambhwani ,  Liangming Wu ,  Peyman Razaghi

IPC: H04J1/00 ,  H04L5/00 ,  H04W28/06 ,  H04L27/26 ,  H04L1/00 ,  H04L27/00 ,  H04W72/04 ,  H04W72/12

CPC classification number: H04L5/0053 ,  H04L1/0038 ,  H04L5/0016 ,  H04L27/0012 ,  H04L27/2602 ,  H04W28/06 ,  H04W72/042 ,  H04W72/1273

Abstract: An apparatus and method for communication including determining an assignment for one of a plurality of symbol durations in a format combination; determining if at least one bit from one or more first upper channels is available if the assignment is associated with the one or more first upper channels and occupying the one of the plurality of symbol durations with the at least one bit, or if unavailable, occupying the one of the plurality of symbol durations with at least one bit from one or more second upper channels or another first upper channel, wherein the first upper channels and the second upper channels are different; and disabling transmission of format information; or including enabling a BTFD hypothesis testing mode; receiving one or more symbol durations on a physical channel; and attempting to decode the received symbol duration with a first hypothesis that a DCCH channel is not transmitted.

公开(公告)号：US20150381389A1

公开(公告)日：2015-12-31

申请号：US14768625

申请日：2013-04-02

Applicant: QUALCOMM Incorporated

Inventor： Jianqiang Zhang ,  Jilei Hou ,  Neng Wang ,  Xiaohui Liu ,  Liangming Wu

IPC: H04L25/02 ,  H04L5/14

CPC classification number: H04L25/0204 ,  H04L5/143 ,  H04L25/0222 ,  H04L25/0228

Abstract: Methods, systems, and apparatuses are described for channel estimation in wireless communications. The method, systems, and apparatuses operate in a time-division duplex (TDD) scheme. A first transmission may be received in a first sub-frame of a channel according to the TDD scheme. A time auto-correlation function may be applied to the first transmission to obtain a first auto-correlation sample. At least one characteristic of the channel may be estimated based at least in part on the first auto-correlation sample.

Abstract translation: 描述了用于无线通信中的信道估计的方法，系统和装置。 方法，系统和装置以时分双工（TDD）方案工作。 可以根据TDD方案在信道的第一子帧中接收第一传输。 可以将时间自相关函数应用于第一传输以获得第一自相关样本。 可以至少部分地基于第一自相关样本来估计信道的至少一个特性。

公开(公告)号：US12191993B2

公开(公告)日：2025-01-07

申请号：US18261982

申请日：2021-03-18

Applicant: QUALCOMM INCORPORATED

Inventor： Wei Liu ,  Thomas Joseph Richardson ,  Liangming Wu ,  Changlong Xu ,  Ori Shental ,  Hao Xu

IPC: H04L1/00 ,  H03M13/00 ,  H03M13/11

Abstract: Methods, systems, and devices for wireless communication are described to support replacing values of one or more information bit vectors with one or more corresponding sets of parity bits. A first wireless device may replace an information bit vector with a parity bit vector, using a set of information bits of the information bit vector and based on a parity check matrix, which may result in generating the set of information bits at an information bit vector corresponding to a parity bit column of the parity check matrix, during encoding. The first wireless device may perform a transmission to a second wireless device, which may receive the transmission, decode the set of information bits to the information bit vector corresponding to the parity bit column. The second wireless device may replace other bit estimates of a vector corresponding to an information bit column with the set of information bits.

公开(公告)号：US12191953B2

公开(公告)日：2025-01-07

申请号：US17763241

申请日：2019-09-27

Applicant: Qualcomm Incorporated

Inventor： Liangming Wu ,  Chenxi Hao ,  Yu Zhang ,  Qiaoyu Li ,  Wanshi Chen ,  Hao Xu

IPC: H04W24/10 ,  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：US12184362B2

公开(公告)日：2024-12-31

申请号：US17262441

申请日：2019-08-13

Applicant: Qualcomm Incorporated

Inventor： Chenxi Hao ,  Yu Zhang ,  Liangming Wu ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal

IPC: H04B7/0456 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. In one aspect, the described techniques provide for identifying interference signals on multiple layers or resources and determining whether the interference signals transmitted on a particular layer or resource were precoded using linear precoding (LP) or NLP. In this aspect, a receiving device may equalize signals received from a transmitting device (e. g., filter out interference signals) based on determining whether the interference signals were precoded using a first type of precoding (e. g., linear precoding (LP)) or a second type of precoding (e. g., NLP). In another aspect, the described techniques provide for performing interference measurements on signals precoded using NLP based on categorizing interference resources as being precoded using LP or NLP. In this aspect, a receiving device may perform and report measurements differently for interference signals precoded using LP and interference signals precoded using NLP.

公开(公告)号：US12176976B2

公开(公告)日：2024-12-24

申请号：US17613860

申请日：2020-05-14

Applicant: Qualcomm Incorporated

Inventor： Min Huang ,  Yu Zhang ,  Chao Wei ,  Qiaoyu Li ,  Yuwei Ren ,  Liangming Wu ,  Chenxi Hao ,  Wanshi Chen ,  Hao Xu

IPC: H04B7/0456 ,  H04L5/00 ,  H04L5/14

Abstract: Methods, systems, and devices for wireless communications are described for enabling a network equipment to reduce interference for downlink (DL) transmissions to a first device by determining a transmit precoding matrix indicator (TPMI) for uplink (UL) transmissions transmitted by a second device based on feedback from the first device. The first device may determine a subset of possible TPMIs that the second device may use for UL transmissions for full-duplex communications. The first device may indicate the subset to the network equipment. Based on the subset indicated by the first device, the network equipment may determine a pairing of the first device and the second device for full-duplex communications. Additionally, the network equipment may determine a TPMI for the second device to use in UL transmissions and indicate the TPMI to the second device.

公开(公告)号：US12166547B2

公开(公告)日：2024-12-10

申请号：US16077272

申请日：2017-03-10

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Bo Chen ,  Liangming Wu ,  Jilei Hou

IPC: H04B7/0456 ,  H04B7/06 ,  H04L1/00 ,  H04L5/00

Abstract: Enhanced hybrid channel state information (CSI) reference signal (CSI-RS) for full dimension multiple input, multiple output (FD-MIMO) is discussed in which a base station configures a first CSI-RS resource for non-precoded CSI-RS and a second CSI-RS resource for beamformed CSI-RS. The first and second CSI-RS resources are associated with the same CSI process in a hybrid CSI-RS operation. The UE provides a first CSI report including a first rank and precoding matrix indicator (PMI) based on measurement of the non-precoded CSI-RS. The base station may use this first CSI process. CSI report for the beamforming of the beamformed CSI-RS. The UE further provides a second CSI report including a second rank, second PMI, and CQI based on measurement of the beamformed CSI-RS. Additional aspects may provide for a base station to aggregate multiple two-port CSI-RS resource configurations into a single multiport CSI-RS resource configuration that may be dynamically shared between different UEs.

公开(公告)号：US20240406052A1

公开(公告)日：2024-12-05

申请号：US18694309

申请日：2021-12-01

Applicant: QUALCOMM INCORPORATED

Inventor： Kexin Xiao ,  Liangming Wu ,  Changlong Xu ,  Wei Liu ,  Jian Li ,  Kangqi Liu ,  Hao Xu

IPC: H04L27/34 ,  H04L27/36 ,  H04L27/38

Abstract: Methods, systems, and devices for scrambling for probabilistic constellation schemes (PCSs) in wireless communications are described. In some examples, a first wireless device may scramble a set of amplitude information bits associated with a transport block for transmission to a second wireless device. In such examples, the first wireless device may perform a distribution matching procedure on the scrambled set of amplitude information bits. The first wireless device may encode the set of distributed amplitude bits and, in some cases, may perform a modulation procedure on the encoded set of distributed amplitude bits in accordance with a PCS scheme to obtain a codeword associated with the transport block. In some examples, the first wireless device may transmit the codeword to the second wireless device.