公开(公告)号：US11171817B1

公开(公告)日：2021-11-09

申请号：US16849944

申请日：2020-04-15

Applicant: QUALCOMM INCORPORATED

Inventor： Noam Zach ,  Guy Wolf ,  Sharon Levy ,  Ory Eger ,  Assaf Touboul

IPC: H04L27/26 ,  H04B7/06 ,  H04B7/0452

Abstract: Methods related to wireless communication systems and reducing peak-to-average-power ratio (PAPR) in MU-MIMO transmissions are provided. A base station (BS) generates a plurality of communication signals including data for a plurality of user equipment (UE) devices in a plurality of serving beam subspaces. The BS may also generate a peak-to-average-power ratio (PAPR) reduction signal for one or more of the plurality of communication signals. A first portion of the PAPR reduction signal is in a first serving beam subspace of the plurality of serving beam subspaces based on a first error vector magnitude (EVM) associated with a first UE of the plurality of UEs. A second portion of the PAPR reduction signal is in a non-serving beam subspace. The BS may also transmit, to the plurality of UEs, the plurality of communication signals and the PAPR reduction signal. Other features are also claimed and described.

公开(公告)号：US11750308B2

公开(公告)日：2023-09-05

申请号：US17116910

申请日：2020-12-09

Applicant: QUALCOMM Incorporated

Inventor： Shay Landis ,  Guy Wolf ,  Assaf Touboul ,  David Yunusov ,  Peer Berger ,  Michael Levitsky ,  Ran Berliner ,  Sharon Levy ,  Noam Zach

IPC: H04B17/373 ,  H04B17/382 ,  H04W16/14 ,  H04W16/22 ,  H04W72/0453

CPC classification number: H04B17/373 ,  H04B17/382 ,  H04W16/14 ,  H04W16/22 ,  H04W72/0453

Abstract: Disclosed are techniques for wireless communication. In some aspects, a base station (BS) may determine a first planned transmit beam configuration of the first BS. The BS may obtain a second planned transmit beam configuration of a second BS. The BS may determine that a first planned transmit beam of the first planned transmit beam configuration will interfere with a second planned transmit beam of the second planned transmit beam configuration. The BS may modify the first planned transmit beam, the second planned transmit beam, or both, based on the interference determination.

公开(公告)号：US11563615B2

公开(公告)日：2023-01-24

申请号：US17211557

申请日：2021-03-24

Applicant: QUALCOMM Incorporated

Inventor： Ory Eger ,  Assaf Touboul ,  Yehonatan Dallal ,  Noam Zach ,  Sharon Levy ,  Guy Wolf ,  Shay Landis ,  Ran Berliner ,  Jacob Pick

IPC: H04W72/04 ,  H04L27/26 ,  H04L25/02 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device (e.g., a user equipment (UE) or base station) may reduce a peak to average power ratio (PAPR) by clipping signals transmitted to a receiving device according to a clipping level. The receiving device may receive, from the transmitting device, an indication of the clipping level associated with a reference signal. The receiving device may receive the reference signal and identify distortions based on the clipping level. The receiving device may iteratively reconstruct peaks of the clipped reference signal until the receiving device is able to obtain accurate pilot symbols for use in channel estimation. The techniques described herein may enable receiving devices to improve efficiency and reliability of communications by improving channel estimation, which may increase the probability of successfully decoding transmitted information.

公开(公告)号：US11496189B2

公开(公告)日：2022-11-08

申请号：US16888566

申请日：2020-05-29

Applicant: QUALCOMM Incorporated

Inventor： Sharon Levy ,  Guy Wolf ,  Igor Gutman ,  Assaf Touboul ,  Ory Eger ,  Noam Zach

IPC: H04W4/00 ,  H04B7/0456 ,  H04L5/00 ,  H04B1/04

Abstract: Techniques for wireless communications are described. A communication device may support processing digital post distortion using additional references symbols. For example, the communication device may precode a signal including at least two reference symbols for a single-layer transmission using at least two antenna ports. At least one reference symbol of the at least two reference symbols is associated with at least one data symbol of a data stream. The communication device may estimate, based on the at least two reference symbols, a nonlinearity model of at least two power amplifiers associated with the single-layer transmission, and determine an estimate of a nonlinearity factor of the precoded signal based on the estimated nonlinearity model. As a result, the communication device may eliminate or reduce the nonlinear factor of the precoded signal based on the estimated nonlinearity model of the at least two power amplifiers and the estimated channel impulse response.

公开(公告)号：US11425666B2

公开(公告)日：2022-08-23

申请号：US17125728

申请日：2020-12-17

Applicant: QUALCOMM Incorporated

Inventor： Guy Wolf ,  Noam Zach ,  Sharon Levy

IPC: H04W52/36 ,  H04W52/14 ,  H04W52/52 ,  H04W72/04 ,  H04W52/54

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may determine a set of power adjustment values for a set of symbols to be used to transmit a data signal in a slot. In some cases, each power adjustment value corresponds to a power adjustment to be applied when transmitting a respective symbol in the slot. The transmitting device may transmit a control signal to a receiving device indicating the set of power adjustment values. The transmitting device may transmit the data signal on the set of symbols in the slot, applying the indicated set of power adjustment values to the set of symbols. The receiving device may decode the data signal based on the indicated set of power adjustments.

公开(公告)号：US20220248386A1

公开(公告)日：2022-08-04

申请号：US17165986

申请日：2021-02-03

Applicant: QUALCOMM Incorporated

Inventor： Guy Wolf ,  Assaf Touboul ,  Ory Eger ,  Sharon Levy ,  Noam Zach

IPC: H04W72/04 ,  H04L5/00

Abstract: In embodiments of systems and methods for protecting wireless communications a base station and the wireless device, a base station receive from a wireless device channel feedback from a wireless device regarding a communication beam between the base station and the wireless device, generate a barrage signal precoder based on the received channel feedback regarding the communication beam, and transmit a barrage signal using the barrage signal precoder on a second beam that is different from the communication beam.

公开(公告)号：US11258646B2

公开(公告)日：2022-02-22

申请号：US16902121

申请日：2020-06-15

Applicant: QUALCOMM Incorporated

Inventor： Noam Zach ,  Guy Wolf ,  Ory Eger ,  Sharon Levy ,  Assaf Touboul

IPC: H04L27/26 ,  H04W52/36 ,  H04W24/10 ,  H04W72/04 ,  H04W88/14

Abstract: Methods, systems, and devices for wireless communications are described. An interfering base station may transmit to a neighboring base station a configuration to measure beam resources for a plurality of PAPR reduction beams. The neighboring base station may forward this measurement configuration to an associated UE. The UE may then take measurements of the interfering base station's PAPR reduction beams in accordance with the configuration and transmit the report to its serving base station. The neighboring base station may then compile a headroom report and transmit the headroom report to the interfering base station. The interfering base station may then adjust its PAPR reduction beams based on the headroom report.

公开(公告)号：US11201773B1

公开(公告)日：2021-12-14

申请号：US16887471

申请日：2020-05-29

Applicant: QUALCOMM Incorporated

Inventor： Noam Zach ,  Guy Wolf ,  Ory Eger ,  Sharon Levy ,  Assaf Touboul

IPC: H04L27/26 ,  H04L1/00 ,  H04W72/08 ,  H04W72/04

Abstract: A transmitting device may reduce a peak to average power ratio (PAPR) ratio by clipping samples that have an amplitude exceeding a threshold. For a downlink transmission, the transmitting device may transmit an incremental peak suppression information message (PSIM) to multiple user equipments (UEs). A UE may receive downlink control information (DCI) indicating a data and a modulation and coding scheme (MCS) for the UE, and at least a first incremental PSIM. The UE may decode at least the first incremental PSIM that is applicable to a MCS lower than or equal to the MCS for the UE. The UE may determine whether to decode one or more subsequent incremental PSIMs based on the MCS for the UE. The UE may apply peak information from the incremental PSIMs to the data channel. The UE may decode the data channel based on the MCS for the UE.

公开(公告)号：US20210376890A1

公开(公告)日：2021-12-02

申请号：US16888566

申请日：2020-05-29

Applicant: QUALCOMM Incorporated

Inventor： Sharon Levy ,  Guy Wolf ,  Igor Gutman ,  Assaf Touboul ,  Ory Eger ,  Noam Zach

IPC: H04B7/0456 ,  H04L5/00

Abstract: Techniques for wireless communications are described. A communication device may support processing digital post distortion using additional references symbols. For example, the communication device may precode a signal including at least two reference symbols for a single-layer transmission using at least two antenna ports. At least one reference symbol of the at least two reference symbols is associated with at least one data symbol of a data stream. The communication device may estimate, based on the at least two reference symbols, a nonlinearity model of at least two power amplifiers associated with the single-layer transmission, and determine an estimate of a nonlinearity factor of the precoded signal based on the estimated nonlinearity model. As a result, the communication device may eliminate or reduce the nonlinear factor of the precoded signal based on the estimated nonlinearity model of the at least two power amplifiers and the estimated channel impulse response.

公开(公告)号：US20240114365A1

公开(公告)日：2024-04-04

申请号：US17957216

申请日：2022-09-30

Applicant: QUALCOMM Incorporated

Inventor： Shay Landis ,  Guy Wolf ,  Noam Zach

IPC: H04W24/08 ,  H04L5/00 ,  H04L25/02 ,  H04W24/10

CPC classification number: H04W24/08 ,  H04L5/0048 ,  H04L25/0228 ,  H04W24/10

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive, from a network entity, a request to report one or more frequency corrections, the request including an indication of one or more reporting parameters for the one or more frequency corrections. The network entity may transmit a set of one or more reference signals associated with performing the one or more frequency corrections at the UE. The UE may monitor for the set of one or more reference signals and transmit, to the network entity, a report indicating the one or more frequency corrections in accordance with the one or more reporting parameters. The UE may transmit the report according to a periodicity, according to a trigger, or both indicated in the one or more reporting parameters. The network entity may perform channel estimations based on the report indicating the one or more frequency corrections.