公开(公告)号：US20250088232A1

公开(公告)日：2025-03-13

申请号：US18728394

申请日：2022-04-02

Applicant: QUALCOMM Incorporated

Inventor： Chenxi HAO ,  Yu ZHANG ,  Rui HU ,  Wei XI ,  Taesang YOO ,  Hao XU

IPC: H04B7/06

Abstract: Certain aspects of the present disclosure provide techniques for channel estimation based on transmission spatial information. An example method of wireless communication by a user equipment includes receiving an indication of transmission spatial information associated with a network entity; receiving a reference signal from the network entity based on the transmission spatial information; and transmitting, to the network entity, channel state information (CSI) based on the received reference signal and the transmission spatial information.

公开(公告)号：US20240348479A1

公开(公告)日：2024-10-17

申请号：US18683465

申请日：2021-10-29

Applicant: QUALCOMM Incorporated

Inventor： Rui HU ,  Chenxi HAO ,  Wei XI ,  Yu ZHANG ,  Taesang YOO ,  Yuwei REN ,  Hao XU

IPC: H04L25/02 ,  H04B7/06 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04L25/0254 ,  H04B7/0626 ,  H04L5/0053 ,  H04L25/0224 ,  H04L27/2613

Abstract: A method for wireless communication by a user equipment (UE), includes receiving, from a base station, a reference signal (RS) on a set of resource elements (REs), the RS having been multiplexed onto the set of REs based on a non-orthogonal cover code, and a number of REs in the set of REs being less than a number of ports associated with the RS. The method further includes estimating, at the UE via a channel estimation neural network, a channel based on receiving the RS. The method still further includes transmitting, to the base station, a feedback report associated with the estimated channel based on receiving the RS.

公开(公告)号：US20240313838A1

公开(公告)日：2024-09-19

申请号：US18546926

申请日：2021-04-30

Applicant: QUALCOMM INCORPORATED

Inventor： Liangming WU ,  Hao XU ,  Chenxi HAO ,  Qiaoyu LI ,  Rui HU ,  Kangqi LIU ,  Wei XI ,  Yu ZHANG

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0658

Abstract: Methods, systems, and devices for wireless communications are described. A wireless communications system may support compression of channel information (e.g., channel feedback) in accordance with multiple compression schemes, from which a transmitting device may select for a channel reporting transmission. For example, a user equipment (UE) may be configured with multiple channel state information compression schemes, corresponding to different encoders or decoders, which may involve various machine learning or neural network techniques. The UE may select or otherwise determine which compression scheme to use for channel reporting in various scenarios, including a selection based on whether a compression scheme maintains relatively accurate reporting, or whether a more power-intensive or processor-intensive compression scheme is supported by an operating mode of the UE, among other selection criteria. The UE may indicate which compression scheme was selected by a transmitted indication included with or otherwise accompanying a channel reporting transmission.

公开(公告)号：US20240049015A1

公开(公告)日：2024-02-08

申请号：US18257009

申请日：2021-03-05

Applicant: QUALCOMM INCORPORATED

Inventor： Qiaoyu LI ,  Yu ZHANG ,  Liangming WU ,  Hao XU ,  Rui HU ,  Chenxi HAO ,  Taesang YOO

IPC: H04W24/08 ,  H04W24/10 ,  H04L5/00

CPC classification number: H04W24/08 ,  H04W24/10 ,  H04L5/0057

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first indication of a first number of antenna ports for which the UE is to report channel state information (CSI), and a second indication of a second number of antenna ports on which the UE is to measure CSI reference signals (CSI-RSs). The second number may be less than the first number. The UE may receive an indication of one or more antenna port parameters, where each may be associated with one of the first number of antenna ports or the second number of antenna ports. The UE may determine the CSI for the first number of antenna ports using the one or more antenna port parameters and measurements made by the UE on the second number of ports, and may transmit a report including the CSI for the first number of ports.

公开(公告)号：US20250071824A1

公开(公告)日：2025-02-27

申请号：US18728423

申请日：2022-03-18

Applicant: QUALCOMM Incorporated

Inventor： Rui HU ,  Chao WEI ,  Wanshi CHEN ,  Peter GAAL ,  Hao XU ,  Min HUANG ,  Kangqi LIU

IPC: H04W74/0838 ,  H04L9/32 ,  H04W74/00

Abstract: A method of wireless communication, by a user equipment (UE), includes receiving, from a network device, a trigger command initiating a hash-based random access procedure. The trigger command includes a target hash value and one or more rules for selecting preambles. The method also includes selecting, based on the trigger command, one or more random access channel (RACH) occasions (RO) for potential preamble transmission. The method further includes calculating at least one hash value in response to the trigger command based on computational resources of the UE. The method also includes transmitting a preamble on the at least one selected RO based on the at least one hash value and the target hash value.

公开(公告)号：US20250063599A1

公开(公告)日：2025-02-20

申请号：US18721807

申请日：2022-03-02

Applicant: QUALCOMM Incorporated

Inventor： Chao WEI ,  Rui HU ,  Min HUANG ,  Kangqi LIU ,  Mingxi YIN ,  Hao XU ,  Wanshi CHEN ,  Peter GAAL

IPC: H04W74/0816 ,  H04L1/08 ,  H04L5/00 ,  H04W72/02 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A network entity (e.g., a base station or reader) may transmit an initial access trigger message (e.g., modulating a continuous wave transmission using amplitude shift keying (ASK)), and the trigger message may include an indication of a type of passive user equipment (PUE) or a PUE use case (e.g., high priority/latency-critical PUEs or low priority/latency non-critical PUEs). A receiving PUE may harvest energy from the initial access trigger message for transmitting an initial access response message including an identifier for the receiving PUE. The receiving PUE may transmit the initial access response message (e.g., on one or more initial access resources) using the harvested energy if the trigger message indicates the PUE's type of PUE or PUE use case. In some examples, the receiving PUE may ignore triggers for different types of PUEs or PUE use cases.

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：US20240275440A1

公开(公告)日：2024-08-15

申请号：US18564858

申请日：2021-09-03

Applicant: QUALCOMM Incorporated

Inventor： Wei XI ,  Rui HU ,  Chenxi HAO ,  Hao XU

IPC: H04B7/0456 ,  H04L5/00

CPC classification number: H04B7/0456 ,  H04L5/0051

Abstract: Aspects of the present disclosure provide techniques for reducing channel state information (CSI) feedback overhead sent from one or more user equipments (UEs) to a network entity, such as a base station (BS) or gNodeB (gNB), while ensuring correct mapping of the CSI feedback at the network entity. In some cases, the overhead reduction may be achieved by converting the CSI feedback to size-reduced and further quantized representative coefficients (e.g., for multiple UEs). The quantized coefficients allow the network entity to recover the CSI feedback by de-quantizing and correctly mapping the quantized coefficients to recover the CSI feedback.

公开(公告)号：US20240163136A1

公开(公告)日：2024-05-16

申请号：US18548859

申请日：2021-05-13

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Yu ZHANG ,  Rui HU ,  Hao XU

IPC: H04L25/02 ,  H04B7/06

CPC classification number: H04L25/0226 ,  H04B7/0639 ,  H04L25/0254

Abstract: Certain aspects of the present disclosure provide techniques for sounding and precoding uplink transmissions using one or more machine learning models. An example method generally includes generating a sounding reference signal (SRS) using an SRS deep neural network (DNN); transmitting, to a network entity, the generated SRS in one or more resource elements (REs); receiving, from the network entity, information identifying a precoding matrix to use for uplink transmissions on a shared channel; precoding uplink transmissions based on the identified precoding matrix; and transmitting, to the network entity, the precoded uplink transmissions on the shared channel.