公开(公告)号：US20210105117A1

公开(公告)日：2021-04-08

申请号：US17033656

申请日：2020-09-25

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Sayed Khairy ABDELGHAFFAR ,  Alexandros MANOLAKOS ,  Weimin DUAN ,  Pavan Kumar VITTHALADEVUNI ,  Krishna Kiran MUKKAVILLI

IPC: H04L5/00 ,  H04W72/04

Abstract: An apparatus for wireless communication transmits a demodulation reference signal (DMRS) for at least eight orthogonal DMRS ports in a single symbol of at least one slot. The apparatus also transmits data in the at least one slot. The apparatus may correspond to a base station transmitting DMRS and downlink data. The apparatus may correspond to a user equipment (UE) transmitting DMRS and uplink data. The apparatus may bundle the DMRS across multiple slots with a bundled DMRS including a first set of the DMRS ports in a first single symbol of a first slot and a second set of the DMRS ports in a second single symbol of a second slot. The apparatus may transmit the DMRS in only a single slot in a physical resource block group (PRG) including two or more resource blocks using four frequency domain orthogonal cover codes (FD-OCC) and a frequency offset pattern.

公开(公告)号：US20200052852A1

公开(公告)日：2020-02-13

申请号：US16485725

申请日：2017-03-24

Applicant: QUALCOMM Incorporated

Inventor： Pavan Kumar VITTHALADEVUNI ,  Yu ZHANG ,  Joseph Binamira SORIAGA

IPC: H04L5/00 ,  H04B7/06

Abstract: Aspects of the present disclosure describe receiving, from an access point, an indication of at least one of a beamforming method for beamforming a RS or a normalization method for normalizing power for beamforming the RS. A channel covariance matrix corresponding to interference over a plurality of antenna ports can be generated, as well as a RS beamforming matrix based at least in part on at least one of modifying the channel covariance matrix or on the normalization method. The RS can be generated based on the RS beamforming matrix and the beamforming method. The RS can be transmitted to the access point based on the RS beamforming matrix.

公开(公告)号：US20250150896A1

公开(公告)日：2025-05-08

申请号：US18919398

申请日：2024-10-17

Applicant: QUALCOMM Incorporated

Inventor： Pavan Kumar VITTHALADEVUNI ,  Naga BHUSHAN ,  Jay Kumar SUNDARARAJAN

IPC: H04W28/06

Abstract: Some examples of the techniques described herein may provide encoding or decoding approaches to generate vectors that meet an orthogonality condition in vector compression procedures (e.g., vector compression or decompression). Encoder layers (e.g., neural network layers) on the encode side may generate orthogonal compressed vectors or decoder layers (e.g., neural network layers) on the decode side may generate orthogonal decompressed vectors. For instance, a neural network layer may be trained to generate a compressed or decompressed vector that satisfies an orthogonality condition relative to one or more previously compressed or decompressed vectors in accordance with a dependency order or a compression sequence. An indication of the dependency order may be communicated between the encode side and the decode side to order encoder or decoder layers (e.g., to execute encoder or decoder layers in the compression sequence) to produce compressed or decompressed vectors that satisfy an orthogonality condition.

公开(公告)号：US20240421874A1

公开(公告)日：2024-12-19

申请号：US18334848

申请日：2023-06-14

Applicant: QUALCOMM Incorporated

Inventor： Pavan Kumar VITTHALADEVUNI ,  Krishna Kiran MUKKAVILLI ,  Hung Dinh LY ,  Jay Kumar SUNDARARAJAN

IPC: H04B7/06 ,  H04W24/02 ,  H04W72/23

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive signaling indicating a transition from a first type of channel state information (CSI) processing to a second type of CSI processing at the UE, wherein at least one of the first type of CSI processing or the second type of CSI processing is a machine-learning-based CSI processing type. The UE may transition from the first type of CSI processing to the second type of CSI processing in accordance with the signaling and a timeline for the transition. Numerous other aspects are described.

公开(公告)号：US20240380465A1

公开(公告)日：2024-11-14

申请号：US18692763

申请日：2021-11-04

Applicant: QUALCOMM Incorporated

Inventor： Hyojin LEE ,  Chenxi HAO ,  June NAMGOONG ,  Taesang YOO ,  Wei XI ,  Pavan Kumar VITTHALADEVUNI ,  Yu ZHANG ,  Hwan Joon KWON

IPC: H04B7/06 ,  H04B7/0456 ,  H04B17/309

Abstract: A method of wireless communication by a user equipment (UE), includes estimating a downlink channel to generate a channel estimate. The method also includes obtaining multiple precoding matrices, by a channel state information (CSI) module including a neural network encoder decoder pair, based on the channel estimate and multiple different multiple input multiple output (MIMO) ranks. The method further includes determining a best rank indicator based on the precoding matrices and spectral efficiency estimates for the different MIMO ranks. The method still further includes reporting, to a base station, the best rank indicator, a channel quality index (CQI), and CSI encoder output.

公开(公告)号：US20240048945A1

公开(公告)日：2024-02-08

申请号：US18489617

申请日：2023-10-18

Applicant: QUALCOMM Incorporated

Inventor： Jay Kumar SUNDARARAJAN ,  Krishna Kiran MUKKAVILLI ,  Taesang YOO ,  Naga BHUSHAN ,  June NAMGOONG ,  Pavan Kumar VITTHALADEVUNI ,  Tingfang JI

IPC: H04W4/029 ,  H04W4/02 ,  H04W64/00 ,  H04W36/00 ,  G06N3/02 ,  H04W24/10

CPC classification number: H04W4/029 ,  H04W4/023 ,  H04W64/003 ,  H04W36/0085 ,  G06N3/02 ,  H04W24/10

Abstract: In an aspect, a UE obtains information (e.g., UE-specific information) associated with a set of triggering criteria (e.g., from a server, a serving network, e.g., in conjunction with or separate from a set of neural network functions) for a set of neural network functions, the set of neural network functions configured to facilitate positioning measurement feature processing at the UE, the set of neural network functions being generated dynamically based on machine-learning associated with one or more historical measurement procedures. The UE obtains positioning measurement data associated with a location of the UE, and processes the positioning measurement data into a respective set of positioning measurement features based at least in part upon the positioning measurement data and at least one neural network function from the set of neural network functions that is triggered by at least one triggering criterion from the set of triggering criteria.

公开(公告)号：US20230351157A1

公开(公告)日：2023-11-02

申请号：US18004867

申请日：2021-07-30

Applicant: QUALCOMM Incorporated

Inventor： June NAMGOONG ,  Taesang YOO ,  Naga BHUSHAN ,  Pavan Kumar VITTHALADEVUNI ,  Jay Kumar SUNDARARAJAN ,  Alexandros MANOLAKOS ,  Krishna Kiran MUKKAVILLI ,  Hwan Joon KWON ,  Tingfang JI ,  Wanshi CHEN

IPC: G06N3/098 ,  G06N3/0455

CPC classification number: G06N3/0455 ,  G06N3/098

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a client may determine, using a first client autoencoder, a feature vector associated with one or more features associated with an environment of the client. The client may determine a latent vector using a second client autoencoder and based at least in part on the feature vector. The client may transmit the feature vector and the latent vector. Numerous other aspects are provided.

公开(公告)号：US20230299831A1

公开(公告)日：2023-09-21

申请号：US18003249

申请日：2021-08-16

Applicant: QUALCOMM Incorporated

Inventor： Alexandros MANOLAKOS ,  Pavan Kumar VITTHALADEVUNI ,  June NAMGOONG ,  Jay Kumar SUNDARARAJAN ,  Taesang YOO ,  Hwan Joon KWON ,  Krishna Kiran MUKKAVILLI ,  Tingfang JI ,  Naga BHUSHAN

IPC: H04B7/06 ,  H04B7/0417

CPC classification number: H04B7/0626 ,  H04B7/0417

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first device may generate a multi-part neural network based channel state information feedback (CSF) message that comprises: a first part that indicates contents of a second part, and the second part; and transmit the multi-part neural network based CSF to a second device. Numerous other aspects are provided.

公开(公告)号：US20230021835A1

公开(公告)日：2023-01-26

申请号：US17385659

申请日：2021-07-26

Applicant: QUALCOMM Incorporated

Inventor： Pavan Kumar VITTHALADEVUNI ,  Taesang YOO ,  Naga BHUSHAN

IPC: H04L25/02 ,  H04B17/336 ,  G06N3/08 ,  G06N3/04

Abstract: A method of wireless communication by a user equipment (UE) includes receiving, from a base station, a configuration to train a neural network for multiple different signal to noise ratios (SNRs) of a channel estimate for a wireless communication channel. The method also includes determining a current SNR of the channel estimate is above a first threshold value. The method further includes training the neural network based on the channel estimate, to obtain a first trained neural network. The method still further includes perturbing the channel estimate to obtain a perturbed channel estimate, and training the neural network based on the perturbed channel estimate, to obtain a second trained neural network. The method includes reporting, to the base station, parameters of the first trained neural network along with the channel estimate, and parameters of the second trained neural network.

公开(公告)号：US20220416861A1

公开(公告)日：2022-12-29

申请号：US17755817

申请日：2019-11-18

Applicant: QUALCOMM Incorporated

Inventor： Alexandros MANOLAKOS ,  Yu ZHANG ,  Pavan Kumar VITTHALADEVUNI ,  Yeliz TOKGOZ ,  Krishna Kiran MUKKAVILLI

IPC: H04B7/06 ,  H04L1/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a first part of a channel state information (CSI) report, wherein the first part includes an indication of whether a value of a second part of the CSI report matches a value of a previous CSI report; and selectively transmit the second part of the CSI report based at least in part on whether the indication indicates that the value of the second part of the CSI report matches the value of the previous CSI report. In some aspects, a UE may determine a modified subband size of the UE, wherein the modified subband size is different than a configured subband size of the UE; and transmit, in a CSI report, an indication regarding the modified subband size to a base station. Numerous other aspects are provided.