公开(公告)号：US11489700B2

公开(公告)日：2022-11-01

申请号：US17141190

申请日：2021-01-04

Applicant: QUALCOMM Incorporated

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

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

Abstract: Methods, systems, and devices for wireless communications are described. A receiving device may receive a channel estimation reference signal (CHEST-RS) transmitted over a bandwidth, the CHEST-RS associated with a power amplifier (PA) configuration of a transmitting device. The receiving device may determine a channel estimation measurement associated with the PA configuration based at least in part on the CHEST-RS. The receiving device may receive a non-linear estimation reference signal (NLEST-RS) transmitted over a subset bandwidth of the bandwidth, the NLEST-RS associated with the PA configuration. The receiving device may determine a non-linear estimation measurement associated with the PA configuration based at least in part on the NLEST-RS and the CHEST-RS, the non-linear estimation measurement identifying a non-linear response of the PA configuration. The receiving device may communicate with the transmitting device based at least in part on the channel estimation measurement and the non-linear response of the PA configuration.

公开(公告)号：US20220231895A1

公开(公告)日：2022-07-21

申请号：US17153315

申请日：2021-01-20

Applicant: QUALCOMM Incorporated

Inventor： Ory Eger ,  Guy Wolf ,  Assaf Touboul ,  Noam Zach ,  Sharon Levy ,  Ori Ben Shahar ,  Ran Berliner

IPC: H04L27/26 ,  H04L1/00 ,  H04L5/00

Abstract: This disclosure provides methods, devices and systems for reducing PAPR in wireless communications. Some implementations more specifically relate to suppressing the amplitudes of a data signal that exceed a threshold amplitude level. The data signal may represent transmit (TX) data associated with a hybrid automatic repeat request (HARQ) process. In some implementations, a transmitting device may detect one or more peaks associated with the data signal. The transmitting device may reduce the amplitudes of the samples associated with the detected peaks to produce the amplitude-suppressed data signal. The transmitting device may further generate peak suppression information indicating the amplitudes of one or more of the samples associated with the peaks. In response to receiving a NACK message, the transmitting device may transmit, to the receiving device, the peak suppression information, one or more coded bits representing the TX data (associated with the HARQ process), or any combination thereof.

公开(公告)号：US11316575B2

公开(公告)日：2022-04-26

申请号：US16862517

申请日：2020-04-29

Applicant: QUALCOMM INCORPORATED

Inventor： Sharon Levy ,  Guy Wolf

IPC: H04B7/06 ,  H04B7/0452

Abstract: Methods related to wireless communication systems and performing link adaption for multiple user-multiple-input multiple-output (MU-MIMO) communications using multiple expected channel quality indicators are presented. A base station (BS) transmits, to a first user equipment (UE) of a plurality of UEs, a channel state report configuration indicating a set of one or more measurement resources and at least one of precoding information or rank indications associated with the set of one or more measurement resources. The BS receives, from the first UE, a channel state report including a plurality of expected channel quality indicators (CQIs) over a time period based on the set of one or more measurement resources and the at least one of the precoding information or rank indications. The BS uses the channel state report to determine a link adaptation for the first UE. Other features are also claimed and described.

公开(公告)号：US11190383B2

公开(公告)日：2021-11-30

申请号：US17172915

申请日：2021-02-10

Applicant: QUALCOMM Incorporated

Inventor： Ory Eger ,  Ran Berliner ,  Assaf Touboul ,  Noam Zach ,  Sharon Levy ,  Guy Wolf ,  Amit Bar-or Tillinger ,  Shay Landis ,  Gideon Kutz

IPC: H04L27/26 ,  H04L27/34 ,  H04B7/0456 ,  H04W72/04 ,  H04L5/00

Abstract: This disclosure provides methods, devices and systems for reducing PAPR in wireless communications. Some implementations more specifically relate to suppressing the amplitudes of a data signal that exceed a threshold amplitude level. In some implementations, a transmitting device may detect one or more peaks associated with a data signal to be transmitted to a receiving device. A peak may be any sample of a data signal having an amplitude that exceeds a threshold amplitude level. The transmitting device generates peak suppression information indicating the amplitude, a phase and a position of each of the samples associated with the detected peaks. The transmitting device adjusts the data signal by reducing the amplitudes associated with the detected peaks and transmits the adjusted data signal, with the peak suppression information, to the receiving device. In some implementations, the transmitting device may compress the peak suppression information to reduce the overhead of the transmission.

公开(公告)号：US20210336666A1

公开(公告)日：2021-10-28

申请号：US16857488

申请日：2020-04-24

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Michael Levitsky ,  Guy Wolf ,  Sharon Levy

IPC: H04B7/0456 ,  H04L5/10 ,  H04L5/00 ,  H04B7/06 ,  H04B7/0417

Abstract: In one aspect, a method of wireless communication includes generating, by a user equipment (UE), a delta precoding value for a precoding matrix update, the delta precoding value relative to a previous precoding matrix. The method also includes generating, by the UE, a delta power loading value for the precoding matrix update, the delta power loading value relative to the previous precoding matrix. The method further includes transmitting, by the UE, a transmission indicating the delta precoding value and the delta power loading value. Other aspects and features are also claimed and described.

公开(公告)号：US20210328847A1

公开(公告)日：2021-10-21

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 ,  H04B7/0452 ,  H04B7/06

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：US20210328752A1

公开(公告)日：2021-10-21

申请号：US17031876

申请日：2020-09-24

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/02 ,  H04L27/26 ,  H04L5/00

Abstract: A base station may multiplex a peak suppression information message (PSIM) on a physical downlink shared channel (PDSCH) with data for efficient implementation of PSIMs for peak to average power ratio (PAPR) reduction. A base station may clip peaks from a signal to be transmitted and capture information of the clipped peaks into a PSIM. The base station may then multiplex the PSIM on the PDSCH such that a receiving device (for example, a user equipment (UE)) may receive the signal and reconstruct the signal (for example, PDSCH data) using the PSIM. According to some aspects, each PDSCH symbol may include a PSIM for a previous PDSCH symbol, or the PSIM may be for the current symbol. Various aspects of the techniques described herein may further provide for PSIM positioning in frequency, PSIM modulation, PSIM channel coding, PSIM multiple-input multiple-output (MIMO) configurations, among other examples.

公开(公告)号：US20210234740A1

公开(公告)日：2021-07-29

申请号：US17146696

申请日：2021-01-12

Applicant: QUALCOMM Incorporated

Inventor： Ory Eger ,  Assaf Touboul ,  Noam Zach ,  Sharon Levy ,  Guy Wolf ,  Shay Landis ,  Ran Berliner ,  Gideon Kutz

IPC: H04L27/26

Abstract: Methods, systems, and devices for wireless communications are described. In one example, a receiving device (e.g., a UE) may transmit, to a transmitting device (e.g., a base station), a capability indicator indicating a capability of the receiving device to perform peak reconstruction using soft metrics (e.g., expected value, covariance) on symbol decisions. The receiving device may receive, from the transmitting device and based on the capability indicator, control signaling indicating a clipping level applied to generate a signal and a subset of peaks clipped from the signal. The receiving device may receive the signal generated in accordance with the control signaling from the transmitting device and may decode a reconstructed signal based on performing the peak reconstruction on the signal using the soft metrics on symbol decisions, the clipping level, and the subset of the peaks clipped from the signal.

公开(公告)号：US20210195535A1

公开(公告)日：2021-06-24

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 ,  H04W52/54 ,  H04W72/04 ,  H04W52/52

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：US11844028B2

公开(公告)日：2023-12-12

申请号：US17305588

申请日：2021-07-09

Applicant: QUALCOMM Incorporated

Inventor： Sharon Levy ,  Guy Wolf ,  Assaf Touboul

IPC: H04W16/28 ,  H04W52/24 ,  H04W72/23

CPC classification number: H04W52/242 ,  H04W16/28 ,  H04W72/23

Abstract: A base station transmits a first transmission using a first directional beam and determines an equivalent isotropic radiated power (EIRP) relationship between the first transmission and a physical downlink shared channel (PDSCH) for a user equipment (UE). The base station transmits, to the UE, an indication of the EIRP relationship between the first transmission and the PDSCH. Then, the base station transmits the PDSCH to the UE using the second directional beam. The UE uses the indication of the EIRP relationship to receive the PDSCH from the base station over the second directional beam.