公开(公告)号：US20250023610A1

公开(公告)日：2025-01-16

申请号：US18712969

申请日：2022-02-01

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Wei XI ,  Chenxi HAO ,  Min HUANG ,  Jing DAI ,  Chao WEI ,  Rui HU ,  Hao XU

IPC: H04B7/06 ,  H04B7/0456 ,  H04L25/02 ,  H04W72/0446

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information that specifies one or more parameters associated with generating, by the UE, a time domain covariance matrix specific to the UE. The UE may receive a channel state information (CSI) reference signal (CSI-RS). The UE may transmit, based at least in part on the CSI-RS and the one or more parameters, a CSI report, the CSI report including data representing the time domain covariance matrix. Numerous other aspects are described.

公开(公告)号：US20240243840A1

公开(公告)日：2024-07-18

申请号：US18563020

申请日：2021-07-07

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Wei LIU ,  Kexin XIAO ,  Changlong XU ,  Ori SHENTAL ,  Thomas Joseph RICHARDSON ,  Hao XU

IPC: H04L1/00

CPC classification number: H04L1/0042 ,  H04L1/0003

Abstract: In a probabilistic amplitude shaping (PAS) system, a distribution matching (DM) component may receive a uniform bit sequence with equal probabilities, which may be converted into symbols with a desired probability distribution (e.g., Gaussian). For example, the probability distribution may use inner constellation points associated with a lower energy and/or power more frequently and outer constellation points associated with a higher energy and/or power less frequently. In general, the DM component may map binary bits to positive amplitudes with a non-uniform distribution according to a DM rate that is based at least in part on a signal-to-noise ratio (SNR), which may vary significantly in a spatial and frequency selective wireless channel. Accordingly, some aspects described herein relate to configuring DM parameters and codeword and resource mappings in a spatial and frequency selective wireless channel.

公开(公告)号：US20240214256A1

公开(公告)日：2024-06-27

申请号：US18557037

申请日：2021-06-16

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Kexin XIAO ,  Changlong XU ,  Wei LIU ,  Hao XU ,  Thomas Joseph RICHARDSON ,  Ori SHENTAL

IPC: H04L27/36 ,  H04L1/00 ,  H04L27/34

CPC classification number: H04L27/362 ,  H04L1/0058 ,  H04L27/3411

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may perform distribution matching on at least a first subset of a set of bits, such as the bits of transport block. The distribution matching may include a variable-to-fixed (v2f) distribution matching procedure in which a ratio between a quantity of input bits to output interim symbols for the v2f distribution matching procedure is variable. The distribution matching include evaluating, after each instance of the v2f distribution matching procedure, whether additional bits remain for distribution matching, and if so, whether to perform an additional instance of the v2f distribution matching procedure or an alternative distribution matching procedure on the remaining bits. Corresponding techniques for a receiving device are also described, including distribution dematching techniques based on a v2f distribution dematching procedure.

公开(公告)号：US20240137261A1

公开(公告)日：2024-04-25

申请号：US18547682

申请日：2021-04-22

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Thomas Joseph RICHARDSON ,  Kexin XIAO ,  Changlong XU ,  Ori SHENTAL ,  Hao XU

IPC: H04L27/34 ,  H04L5/00

CPC classification number: H04L27/34 ,  H04L5/0053 ,  H04L5/0091

Abstract: Methods, systems, and devices for wireless communications are described in which a receiving device, such as a base station or user equipment (UE), may receive an input signal that is modulated according to a probabilistic amplitude shaping (PAS) modulation technique. The receiving device may determine an associated channel noise estimate and may scale the input signal and the channel noise estimate based on a probability distribution parameter that is associated with the PAS modulation. The receiving device may demap the modulation constellation of the input signal based on the scaled input signal and the scaled channel noise estimate and provide one or more bits associated with the PAS modulated constellation. The probability distribution parameter may be estimated at the receiving device, or the transmitting device may provide the probability distribution parameter to the receiving device.

公开(公告)号：US20240097817A1

公开(公告)日：2024-03-21

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

CPC classification number: H04L1/0041 ,  H03M13/1148 ,  H03M13/6362 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0068

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：US20240048287A1

公开(公告)日：2024-02-08

申请号：US18256042

申请日：2021-02-10

Applicant: QUALCOMM Incorporated

Inventor： Kangqi LIU ,  Ruiming ZHENG ,  Changlong XU ,  Liangming WU ,  Kexin XIAO ,  Jian LI ,  Hao XU ,  Wei LIU

IPC: H04L1/1829

CPC classification number: H04L1/1832 ,  H04L1/1848

Abstract: Apparatus, methods, and computer-readable media for network coding for dual connectivity are disclosed herein. A base station (BS) sends encoded symbols from a first network coding layer to a first radio link control (RLC) layer and transmits, to a user equipment (UE), encoded data comprising the encoded symbols. The BS also transmits encoded data to a road side unit (RSU) for passing to the UE as a split transmission. The UE can receive encoded packets from the BS and RSU at a network coding layer via a second RLC layer. The UE recovers source packets from the encoded packets with a rateless network code at the network coding layer. The UE sequences the source packets into an ordered set of source packets at the network coding layer and sends the ordered set of source packets from the network coding layer to a packet data convergence protocol layer for processing.

公开(公告)号：US20230413274A1

公开(公告)日：2023-12-21

申请号：US18460444

申请日：2023-09-01

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/21 ,  H04L1/00 ,  H04L5/00

CPC classification number: H04W72/21 ,  H04L1/0026 ,  H04L5/0055

Abstract: Methods, systems, and devices are described for wireless communications that support transmitting channel state information (CSI) feedback utilizing flexible uplink control resources. A method may include determining a size of a frequency subband corresponding to components of a CSI feedback report based on configuration signaling or a size of allocated uplink control resources. A method may include encoding a CSI report into a single packet and transmitting the single packet over uplink control resources. A method may include encoding a first plurality of components of a CSI report in a first packet, encoding a second plurality of components of the CSI report in a second packet, and mapping the packets to uplink control resources. A method may include transmitting a first plurality of components of a CSI report on a first slot and a second plurality of components of the CSI report on one or more subsequent slots.

公开(公告)号：US20230171749A1

公开(公告)日：2023-06-01

申请号：US17997063

申请日：2020-06-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/0446 ,  H04L1/00 ,  H04L5/00 ,  H04W72/23

CPC classification number: H04W72/0446 ,  H04L1/0071 ,  H04L5/0046 ,  H04W72/23

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may determine a time domain interleaving configuration to be used for a transport block of a communication, wherein the time domain interleaving configuration maintains a frequency domain resource distribution of a frequency domain resource mapping scheme used for the transport block, and transmit the communication on one or more physical shared channels using the time domain interleaving configuration for the transport block of the communication. Numerous other aspects are provided.

公开(公告)号：US20230155725A1

公开(公告)日：2023-05-18

申请号：US17995534

申请日：2021-05-27

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Changlong XU ,  Jian LI ,  Kangqi LIU ,  Xipeng ZHU ,  Hao XU

IPC: H04L1/00 ,  H04L1/1607

CPC classification number: H04L1/0045 ,  H04L1/1607

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiver may determine that a quantity of a first plurality of radio link layer (RLC) protocol data unit (PDU) packets, received from a transmitter, satisfies a first quantity threshold. The receiver may perform a decoding attempt for the first plurality of RLC PDU packets based at least in part on the determination. The receiver may transmit, to the transmitter, an RLC layer feedback report for the first plurality of RLC PDU packets. The RLC layer feedback report may be based at least in part on the decoding attempt. Numerous other aspects are provided.

公开(公告)号：US20230131045A1

公开(公告)日：2023-04-27

申请号：US17759868

申请日：2020-02-14

Applicant: QUALCOMM Incorporated

Inventor： Min HUANG ,  Chenxi HAO ,  Liangming WU

IPC: H04B7/06 ,  H04B7/0456

Abstract: Wireless communications systems and methods related to CSI feedback are provided. A user equipment (UE) receives an indication of a restricted set of frequency domain (FD) beamforming components and one or more channel state information reference signals (CSI-RSs). The UE may transmit channel state information (CSI) report indicating a plurality of precoding coefficients based on the received one or more CSI-RSs and the restricted set of FD beamforming components.