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公开(公告)号：US20180278315A1
公开(公告)日：2018-09-27
申请号：US15928326
申请日：2018-03-22
Applicant: QUALCOMM Incorporated
Inventor： Liangming WU , Yu ZHANG
IPC: H04B7/06 , H04B7/0456
CPC classification number: H04B7/0626 , H04B7/0456 , H04B7/0478 , H04B7/0632 , H04B7/0645
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.
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公开(公告)号：US20250167860A1
公开(公告)日：2025-05-22
申请号：US18839217
申请日：2022-04-29
Applicant: QUALCOMM Incorporated
Inventor： Chao WEI , Jing DAI , Chenxi HAO , Liangming WU , Min HUANG , Hao XU
IPC: H04B7/06
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive one or more reference signals from a plurality of transmit receive points (TRPs) associated with a network entity. The UE may transmit, to the network entity and based at least in part on the one or more reference signals, a coherent joint transmission (CJT) Type II channel state information (CSI) feedback report. The CJT Type II CSI feedback report may be based at least in part on a two-stage frequency domain (FD) basis reporting irrespective of a quantity of precoding matrix indicator (PMI) subbands. The CJT Type II CSI feedback report may be based at least in part on selecting coefficients from high-priority coefficients and excluding low-priority coefficients irrespective of coefficient strengths associated with the low-priority coefficients. Numerous other aspects are described.
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公开(公告)号：US20250080177A1
公开(公告)日：2025-03-06
申请号：US18949792
申请日：2024-11-15
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.
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公开(公告)号：US20240333356A1
公开(公告)日：2024-10-03
申请号：US18740247
申请日：2024-06-11
Applicant: QUALCOMM Incorporated
Inventor： Min HUANG , Chenxi HAO , Yu ZHANG , Chao WEI , Liangming WU , Qiaoyu LI
IPC: H04B7/06 , H04B7/0417
CPC classification number: H04B7/0626 , H04B7/0417 , H04B7/0634 , H04B7/0658
Abstract: Certain aspects of the present disclosure provide techniques for precoder matrix quantization for compressed channel state information (CSI) feedback. A method for wireless communications by a user equipment (UE) includes receiving a CSI report configuration for frequency domain compressed precoder matrix feedback. The CSI report configuration configures the UE to report, for a plurality of selected beams at a plurality of time domain taps, a frequency domain compression basis vector and a plurality of linear combination coefficients associated with the frequency domain compression. For each of the beams, the UE groups the time domain taps into at least first and second groups. The groups each can have zero, one, or more than one time domain taps. The UE quantizes the corresponding linear combination coefficients and/or frequency domain compression basis vectors based on the grouping.
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95.发明公开公开(公告)号：US20240250773A1
公开(公告)日：2024-07-25
申请号：US18684216
申请日：2022-03-02
Applicant: QUALCOMM Incorporated
Inventor： Wei LIU , Thomas Joseph RICHARDSON , Liangming WU , Changlong XU , Ori SHENTAL , Hao XU
CPC classification number: H04L1/0033 , H03M7/40
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitting node may determine a set of geometry-specific parameters based at least in part on a symbol sequence length n and a target distribution. The transmitting node may determine a sequence of K bits based at least in part on a plurality of information bits and a bit sequence length K. The transmitting node may map, based at least in part on a composition selected from a plurality of compositions, the sequence of K bits to a sequence of n symbols using arithmetic coding based at least in part on the set of geometry-specific parameters. The transmitting node may transmit the sequence of n symbols to a receiving node. Numerous other aspects are described.
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Patent Agency Ranking
公开(公告)号：US20240137253A1
公开(公告)日：2024-04-25
申请号：US18546705
申请日：2021-04-27
Applicant: QUALCOMM Incorporated
Inventor： Liangming WU , Kexin XIAO , Thomas Joseph RICHARDSON , Changlong XU , Ori SHENTAL , Kangqi LIU , Wei LIU , Hao XU
CPC classification number: H04L27/0012 , H03M7/4006
Abstract: Wireless communications systems and methods related to an efficient arithmetic coding based multiple composition distribution matcher (MCDM) are provided. A wireless communication device selects, based on a first value representing a sequence of bits, a first composition from a plurality of compositions. Each composition of the plurality of compositions includes a different modulation symbol distribution associated with a modulation scheme. The wireless communication device encodes, based on the first composition, the sequence of bits into a sequence of symbols using arithmetic coding. The wireless communication device transmits a communication signal including the sequence of symbols.
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公开(公告)号：US20240048325A1
公开(公告)日：2024-02-08
申请号：US18245853
申请日：2020-11-06
Applicant: QUALCOMM Incorporated
Inventor： Chenxi HAO , Yu ZHANG , Liangming WU , Wei XI , Hao XU
CPC classification number: H04L5/0051 , H04W24/08
Abstract: Certain aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for channel state information (CSI) reference signal (RS) resource aggregation.
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公开(公告)号：US20240039659A1
公开(公告)日：2024-02-01
申请号：US18257566
申请日：2021-02-11
Applicant: QUALCOMM Incorporated
Inventor： Liangming WU , Hao XU , Qiaoyu LI , Chenxi HAO , Rui HU , Yu ZHANG , Yuwei REN
Abstract: Methods, systems, and devices for wireless communications are described. The method includes transmitting, to a base station, a capability parameter indicating one or more predictive retransmission feedback capabilities of the UE, receiving, from the base station, an activation indicator that indicates a predictive retransmission feedback procedure is enabled, receiving data from the base station, and transmitting a predictive retransmission feedback associated with the data to the base station, the predictive retransmission feedback being computed, in accordance with the activation indicator, prior to completing a decoding of the data.
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公开(公告)号：US20240014921A1
公开(公告)日：2024-01-11
申请号：US18252648
申请日：2021-01-19
Applicant: QUALCOMM Incorporated
Inventor： Jian LI , Changlong XU , Kangqi LIU , Liangming WU , Hao XU
IPC: H04L1/00
CPC classification number: H04L1/0002 , H04L1/0041 , H04L1/0026
Abstract: Aspects of the present disclosure relate to selection of a coding rate for forward error correction coding associated with Fountain code encoding. According to some aspects, a wireless device may determine a plurality of block error rates associated with a channel between the wireless device and a second device, the plurality of block error rates being associated with a plurality of coding rates. The wireless device may select a coding rate from the plurality of coding rates for forward error correction coding based on the plurality of block error rates and the plurality of coding rates. The wireless device may encode a source data packet using a Fountain code to produce a codeword, and perform the forward error correction coding on the codeword based on the selected coding rate to produce a transmit signal. The wireless device may transmit the transmit signal to the second device.
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100.发明公开公开(公告)号：US20230413070A1
公开(公告)日：2023-12-21
申请号：US18030261
申请日：2020-12-14
Applicant: QUALCOMM Incorporated
Inventor： Qiaoyu LI , Hao XU , Liangming WU
Abstract: A method performed by a user equipment (UE) generates local gradients for a federated learning task. The method calculates a gradient Sum-Power level based on the local gradients. The method receives a mapping between gradient Sum-Power levels and scaling factors for channel inversion coefficients to process a data block into an unencoded uplink signal. The method also determines a channel inversion coefficient based on a scaling factor obtained from the mapping and the calculated gradient Sum-Power level. The method applies analog modulation and the channel inversion coefficient to the data block to form the unencoded uplink signal. The method further transmits, to a network, the unencoded uplink signal on shared uplink resources for an over-the-air computation of global gradients for the federated learning task.
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