公开(公告)号：US11627018B2

公开(公告)日：2023-04-11

申请号：US17374876

申请日：2021-07-13

Applicant: QUALCOMM Incorporated

Inventor： Gideon Shlomo Kutz ,  Shay Landis ,  Idan Michael Horn ,  Amit Bar-Or Tillinger

IPC: H04L25/02 ,  H04L27/26 ,  H04W72/04 ,  H04W72/0446 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may perform both a channel estimation and a non-linearity estimation (e.g., a power amplifier (PA) model estimation) on a demodulation reference signal (DMRS) transmitted by a base station. For example, the DMRS may include two portions that correspond to two peak-to-average power ratio (PAPR) values. Low PAPR values may enable the UE to perform the channel estimation, and high PAPR values may enable the UE to perform the PA non-linearity estimation. Accordingly, a first portion of the DMRS may correspond to a lower PAPR value, and the second portion of the DMRS may correspond to a higher PAPR value. In some examples, the base station may signal different parameters for each portion of the DMRS to the UE, or the UE may use fixed values to receive each portion of the DMRS.

公开(公告)号：US11616667B2

公开(公告)日：2023-03-28

申请号：US16990966

申请日：2020-08-11

Applicant: QUALCOMM Incorporated

Inventor： Michael Levitsky ,  Assaf Touboul ,  Amit Bar-Or Tillinger ,  Gideon Shlomo Kutz ,  Shay Landis

IPC: H04L25/49 ,  H04L27/20

Abstract: Disclosed are techniques related to wireless communication system in which multi-level encoded modulation (MLCM) is applied to non-coherent communication. In the proposed techniques, a small fraction of differential phase rotations or bits participating in differential symbol coding are protected with strong codes while other complementary differential phase rotations or bits are protected with weaker codes. Compared to conventional non-coherent communication techniques in which a uniform protection is applied to any fraction of differential phase rotation or any bit of a differential symbol, the proposed MLCM approach enables more spectrally efficient scheme.

公开(公告)号：US11569887B2

公开(公告)日：2023-01-31

申请号：US17073162

申请日：2020-10-16

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Shay Landis ,  Gideon Shlomo Kutz ,  Assaf Touboul ,  Guy Wolf

IPC: H04B7/06 ,  H04B7/0456 ,  H04W76/27 ,  H04L5/00 ,  H04W72/04

Abstract: In one aspect, a method for wireless communication includes transmitting a first message indicating a precoding matrix identifier configured to identify a particular precoding matrix for precoding by another wireless communication device for at least one future transmission; and receiving a second message indicating information about whether the particular precoding matrix was or will be used for the at least one future transmission. In another aspect, a method for wireless communication includes receiving a first message indicating a precoding matrix identifier configured to identify a particular precoding matrix for precoding by the wireless communication device for at least one future transmission; and transmitting a second message indicating information about whether the particular precoding matrix was or will be used for precoding for the at least one future transmission. Other aspects and features are also claimed and described.

公开(公告)号：US20220386280A1

公开(公告)日：2022-12-01

申请号：US17336018

申请日：2021-06-01

Applicant: QUALCOMM Incorporated

Inventor： Idan Michael Horn ,  Gideon Shlomo Kutz ,  Shay Landis ,  Amit Bar-Or Tillinger

IPC: H04W72/04 ,  H04W24/08 ,  H04L5/00 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive control signaling indicating a preamble configuration. The UE may receive a preamble in a time domain. The preamble may include a set of modulated bits during a first portion of an initial symbol duration of a slot. The set of modulated bits may include one or more of a first subset of network temporary identifier bits or a second subset of modulation and coding scheme (MCS) bits. The UE may process the preamble during a second portion of the initial symbol duration of the slot based on the preamble configuration.

公开(公告)号：US11502708B2

公开(公告)日：2022-11-15

申请号：US17230111

申请日：2021-04-14

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Yehezkel Hadid ,  Carl Hardin ,  Sang-June Park ,  Mendel Menachem Aizner ,  Gideon Shlomo Kutz

IPC: H04B1/04 ,  H04B1/62

Abstract: Certain aspects of the present disclosure provide techniques for training a digital pre-distorter (DPD) using real-time over-the-air transmissions and receptions by a user equipment (UE). A method for training the DPD generally includes transmitting a signal, generated by a transmitter front end, via a first port; sampling the signal, received over the air, at a second port; performing signal processing cleaning (e.g., synchronization, linear over-the-air channel estimation and equalization); calculating coefficients for a DPD; and configuring the DPD with the coefficients, for use in digitally pre-distorting sub sequent transmissions.

公开(公告)号：US20220360370A1

公开(公告)日：2022-11-10

申请号：US17315074

申请日：2021-05-07

Applicant: QUALCOMM Incorporated

Inventor： Gideon Shlomo Kutz ,  Tal Oved ,  Assaf Touboul

IPC: H04L1/18 ,  H04L1/00

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for a retransmission protocol that utilizes compressed feedback. Various implementations relate generally to a compressed feedback technique for hybrid automatic repeat request (HARQ). Upon receiving a compressed feedback value, a sending device may generate a retransmission codeblock. The retransmission codeblock may be derived from multiple codeblocks in a set of codeblocks. A receiving device can use the retransmission codeblock to obtain any failed codeblock in the set of codeblocks based on all other previously decoded codeblocks in the set of codeblocks. Thus, the receiving device does not need to indicate which codeblock in the set failed, but only needs to send a compressed feedback value that indicates which sets of codeblocks have had a single codeblock failure.

公开(公告)号：US11477064B2

公开(公告)日：2022-10-18

申请号：US17016793

申请日：2020-09-10

Applicant: QUALCOMM Incorporated

Inventor： Idan Michael Horn ,  Michael Levitsky ,  Assaf Touboul ,  Gideon Shlomo Kutz ,  Amit Bar-Or Tillinger ,  Shay Landis ,  Guy Wolf ,  Ronen Shaked

IPC: H04L27/233 ,  H04J13/18 ,  H04L5/00 ,  H04L5/10 ,  H04L27/26

Abstract: Techniques for wireless communications are described. A demodulation reference signal generated using user information and a noncoherent modulation technique may be communicated between wireless devices. A data sequence may be extracted from the demodulation reference signal based on demodulating the demodulation reference signal using the noncoherent modulation technique and decoding the demodulation reference signal. The data sequence may be used to reconstruct a version of the demodulation reference signal used to descramble a received version of the demodulation reference signal. The descrambled demodulation reference signal may be used to estimate a data channel between a transmitting device and a receiving device.

公开(公告)号：US11432240B2

公开(公告)日：2022-08-30

申请号：US16881842

申请日：2020-05-22

Applicant: QUALCOMM Incorporated

Inventor： Shay Landis ,  Assaf Touboul ,  Gideon Shlomo Kutz

IPC: H04W4/00 ,  H04W52/02 ,  H04L27/233 ,  H04L27/26 ,  H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may enter a lower power mode of operation, and may receive, from a base station, a non-coherent signal while the UE is operating in the lower power mode. The UE may identify an indication to transition from the lower power mode to a higher power mode of operation based at least in part on receiving the non-coherent signal. The UE may enter the higher power mode based at least in part on identifying the indication.

公开(公告)号：US11387933B2

公开(公告)日：2022-07-12

申请号：US16778608

申请日：2020-01-31

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Shahin Mehdizad Taleie ,  Oren Matsrafi ,  Ronen Greenberger ,  Gal Keret ,  Yossi Waldman ,  Gideon Shlomo Kutz

IPC: H04L1/00 ,  H03M1/66 ,  H04W72/04 ,  H04W52/14

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a downlink control message from a base station indicating a modulation and coding scheme (MCS) associated with an uplink transmission, a number of layers associated with the uplink transmission, or both. The UE may determine to adjust (for example, reduce) a first number of bits based on the MCS, the number of layers, or both. The first number of bits may include an effective number of bits (ENOB) supported at a digital-to-analog converter (DAC) of the UE, a number of bits (NOB) supported at a transmission front end (TxFE) component of the UE, or both. The UE may transmit the uplink transmission to the base station according to the adjusted first number of bits.

公开(公告)号：US11330411B2

公开(公告)日：2022-05-10

申请号：US16891804

申请日：2020-06-03

Applicant: QUALCOMM Incorporated

Inventor： Shay Landis ,  Assaf Touboul ,  Gideon Shlomo Kutz ,  Michael Levitsky ,  Amit Bar-Or Tillinger

IPC: H04W4/40 ,  H04W24/10 ,  H04L5/00 ,  H04W72/04 ,  H04B17/336 ,  H04W84/12

Abstract: Methods, systems, and devices for wireless communications are described. The method may include an interference estimation procedure that measures interference from radio access technologies (RATs) different from cellular vehicle to everything (CV2X) on the CV2X network at a user equipment (UE). A UE may record measurements of interference on the CV2X network when no CV2X signal is present during the last symbol of a subframe. Then, the UE may estimate the noise plus interference measured during the empty symbol to improve noise plus interference whitening when decoding a subframe.