公开(公告)号：US11296735B1

公开(公告)日：2022-04-05

申请号：US17210327

申请日：2021-03-23

Applicant: QUALCOMM Incorporated

Inventor： Gideon Shlomo Kutz ,  Amit Bar-Or Tillinger ,  Ori Barak ,  Ran Berliner ,  Assaf Touboul ,  Ori Ben Shahar ,  Noam Zach

IPC: H04B1/04

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit, to each user equipment (UE) of a set of UEs, a different respective set of one or more training parameters for a digital pre-distortion procedure. Some or all of the UEs may determine one or more respective training values based on the one or more training parameters, where the training values from the UEs support the base station computing a set of non-linearity coefficients for the digital pre-distortion procedure. The base station thus may receive training parameters from some or all of the UEs and determine the set of non-linearity coefficients based thereon. The base station use the non-linearity coefficients to perform the digital pre-distortion procedure for one or more downlink transmissions, to one or more UEs of the group of UEs used for training, or to one or more other UEs.

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：US20210359828A1

公开(公告)日：2021-11-18

申请号：US16876575

申请日：2020-05-18

Applicant: QUALCOMM Incorporated

Inventor： Michael Levitsky ,  Assaf Touboul ,  Ran Berliner ,  Shay Landis ,  Lior Uziel

IPC: H04L5/10 ,  H04L5/00 ,  H04B7/01 ,  H04B17/336 ,  H04L25/02 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit repetitions of a tracking reference signal to a user equipment (UE). The UE may determine a Doppler frequency for the downlink channel by measuring the repetitions of the tracking reference signal. The UE may transmit an indication of the downlink Doppler frequency to the base station. The base station may determine the uplink Doppler frequency based on the downlink Doppler frequency. The base station may use the uplink Doppler frequency to select an uplink demodulation reference signal (DMRS) configuration for the UE.

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：US20210242989A1

公开(公告)日：2021-08-05

申请号：US16777667

申请日：2020-01-30

Applicant: QUALCOMM Incorporated

Inventor： Michael Levitsky ,  Assaf Touboul ,  Ran Berliner ,  Gideon Shlomo Kutz ,  Shay Landis

IPC: H04L5/00 ,  H04L1/00

Abstract: Wireless communication techniques that utilize a general purpose (GP) reference signal for non-coherent millimeter-wave communication are discussed. The GP reference signal may have a special structure allowing it to be flexibly used by a mobile device for multiple purposes. A base station may determine a repetition factor for a repetitive intra-symbol GP reference signal mapping based on an event that triggered transmission of the GP reference signal. The base station may also map the GP reference signal to resource elements of a symbol based, at least in part, on the determined repetition factor of the repetitive intra-symbol GP reference signal mapping. The base station may also transmit the mapped GP reference signal. A mobile device may receive the GP reference signal and modify at least one parameter of a plurality of parameters based, at least in part, on processing of the GP reference signal.

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：US20200186232A1

公开(公告)日：2020-06-11

申请号：US16703552

申请日：2019-12-04

Applicant: QUALCOMM Incorporated

Inventor： Michael Levitsky ,  Ran Berliner ,  Ori Auslender ,  Ruhua He ,  Ran Iron

IPC: H04B7/08 ,  H04B7/06 ,  H04W24/10 ,  H04W16/28 ,  H04B7/01

Abstract: Methods, systems, and devices for wireless communications are described that provide for adjustment of a frequency offset based on switching between uplink/downlink (UL/DL) transmission/reception beam pairs between a UE and a base station. A connection may be established via a first UL/DL transmission/reception beam pair and a frequency tracking loop may be established and maintained to correct for frequency error (e.g., due to Doppler shift) of received transmissions at a receiving device. In cases where a beam switch is performed, and the UE and base station switch from the first UL/DL transmission/reception beam pair to a second UL/DL transmission/reception beam pair, and a frequency offset difference between the first and second UL/DL transmission/reception beam pairs may be applied to the frequency tracking loop. The frequency offset difference may be obtained from a table of frequency offset measurements of multiple UL/DL beam pairs using associated reference signal transmissions.

公开(公告)号：US20180269947A1

公开(公告)日：2018-09-20

申请号：US15875443

申请日：2018-01-19

Applicant: QUALCOMM Incorporated

Inventor： Michael Levitsky ,  Ran Berliner

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

CPC classification number: H04B7/0617 ,  H04B7/0626 ,  H04B7/0695 ,  H04B7/088 ,  H04L5/005 ,  H04L25/0224

Abstract: Techniques for synchronized reception beam refinement are described herein. A base station may indicate to a user equipment (UE) a time when a reception beam refinement event may occur. The UE may initiate a synchronized reception beam refinement procedure based on receiving the indication from the base station. The UE may identify a new reception beam configuration based on data stored locally by the UE and ongoing background calculations that the UE carries out based on periodic beam reference signals. At the time indicated, the UE may adjust the reception beam configuration of a reception beam. The base station may initiate one or more link maintenance procedures based on a reception beam refinement event occurring. Such techniques may reduce the loss of data due to link degradation related to channel state feedback inconsistency (CSF) after a reception beam refinement event.

公开(公告)号：US12301256B2

公开(公告)日：2025-05-13

申请号：US18234824

申请日：2023-08-16

Applicant: Qualcomm Incorporated

Inventor： Yevgeny Zagalsky ,  Peer Berger ,  Ran Berliner ,  Shay Landis ,  Eitan Yerushalmi ,  David Jacobian

IPC: H03M13/15 ,  H03M13/11 ,  H03M13/41

Abstract: Certain aspects of the present disclosure provide techniques for Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for determining a minimal list size to use in list decoding operations for reducing resource consumption (e.g., compute, memory, and power) at a decoder. A method includes receiving a codeword comprising a plurality of channel bits encoded with an error-correcting code, the plurality of channel bits comprising, at least, a plurality of information bits, determining a payload size of the codeword, determining a channel capacity metric for the plurality of channel bits, determining a minimal list size for a list decoding operation based on at least the payload size and the channel capacity metric; and performing the list decoding operation on the codeword based on the minimal list size to obtain the plurality of information bits.

公开(公告)号：US11990967B2

公开(公告)日：2024-05-21

申请号：US17656779

申请日：2022-03-28

Applicant: QUALCOMM Incorporated

Inventor： Ran Berliner ,  Shay Landis ,  Yehonatan Dallal ,  Assaf Touboul

IPC: H04L5/00 ,  H04B7/0456 ,  H04B7/06 ,  H04W24/10

CPC classification number: H04B7/0639 ,  H04B7/0456 ,  H04B7/0626 ,  H04L5/0048 ,  H04W24/10

Abstract: Aspects presented herein may enable a receiving device to receive high frequency signals with a simpler receiver to reduce the overall complexity and cost associated with the receiver. In one aspect, an apparatus receives a reference signal from a second wireless device. The apparatus measures amplitude and phase of the reference signal relative to a set point. The apparatus transmits channel flattening information in a precoding feedback to the second wireless device, the precoding feedback including at least a difference between the amplitude of the reference signal and the set point for a sub-band.