公开(公告)号：US11695499B2

公开(公告)日：2023-07-04

申请号：US17364127

申请日：2021-06-30

Applicant: QUALCOMM Incorporated

Inventor： Michael Levitsky ,  Peter Gaal ,  Muhammad Sayed Khairy Abdelghaffar ,  Daniel Paz

IPC: H04L1/00 ,  H04W72/23 ,  H04L5/00 ,  H04W72/044 ,  H04W80/02

CPC classification number: H04L1/0025 ,  H04L5/0051 ,  H04W72/046 ,  H04W72/23 ,  H04W80/02

Abstract: Methods, systems, and devices for wireless communications are described. A base station communicates with a UE via transmission reception points (TRPs). A UE receives, from a base station, control signaling identifying a set of demodulation reference signal (DMRS) configurations. The UE receives, from the base station, control signaling activating a first DMRS configuration and a second DMRS configuration. The UE receives an indication for the UE to use a first transmission mode of a set of transmission modes to communicate with multiple TRPs of the base station. The UE selects at least one of the first DMRS configuration or the second DMRS configuration based on the indicated first transmission mode and a pre-defined logical association. The UE then receives DMRS signals from the TRPs of the base station, according to the selected at least one of the first DMRS configuration or the second DMRS configuration.

公开(公告)号：US11641642B2

公开(公告)日：2023-05-02

申请号：US17149556

申请日：2021-01-14

Applicant: QUALCOMM Incorporated

Inventor： Michael Levitsky ,  Raghu Narayan Challa ,  Ruhua He ,  Assaf Touboul

IPC: H04W72/04 ,  H04W72/044 ,  H04L5/00 ,  H04W24/10

Abstract: In embodiments, a base station may send to a user equipment (UE) a P3 beam management (BM) channel state information reference signal (CSI-RS) having two ports, and may receive from the UE a P3 BM report in response. The P3 BM report may include a proactive UE beam switch indication and a CSF report corresponding to the best UE beam determined by a UE based on the P3 BM CSI-RS. The base station may determine whether the P3 BM report includes an indication that the UE will perform a beam switch from a first UE beam to a second UE beam, and may determine a UE beam switch slot during which the UE will perform the beam switch. Starting at the beam switch slot, the base station may send a physical downlink shared data channel (PDSCH) transmission to the UE using the adjusted downlink transmission parameters.

公开(公告)号：US11632210B2

公开(公告)日：2023-04-18

申请号：US17314952

申请日：2021-05-07

Applicant: QUALCOMM Incorporated

Inventor： Shay Landis ,  Assaf Touboul ,  Noam Zach ,  Idan Michael Horn ,  Daniel Paz ,  Ory Eger ,  Amit Bar-Or Tillinger ,  Michael Levitsky

IPC: H04L5/00 ,  H04L1/00

Abstract: A phase tracking reference signal (PTRS) may be enhanced to carry data encoded with a relative low modulation and coding scheme (MCS). A receive device may receiving a data channel, the data channel including a transport block encoded using a first MCS. The receiving device may receiving a PTRS interleaved with the data channel. The PTRS is encoded with the second MCS that is lower than the first MCS. The receiving device may decode the PTRS to determine PTRS data. The receiving device may track phase noise using the PTRS data as a transmitted sequence of the PTRS. The receiving device may decode the transport block for the data channel based on the first MCS and the tracked phase noise.

公开(公告)号：US11626914B2

公开(公告)日：2023-04-11

申请号：US17318769

申请日：2021-05-12

Applicant: QUALCOMM Incorporated

Inventor： Michael Levitsky ,  Wanshi Chen ,  Jacob Pick ,  Assaf Touboul

IPC: H04B7/06 ,  H04L5/00 ,  H04W24/10 ,  H04B17/336

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may determine a set of groups of layers relating to a set of transport blocks (TBs) or a set of code division multiplexing (CDM) groups. The UE may group the layers such that the layers in each group have a minimal difference in signal-to-interference-plus-noise ratio (SINR) between the layers. The UE may select a different demodulation reference signal (DMRS) configuration for each of the set of groups of layers based on maximizing a communication efficiency metric for each group of layers. The UE may transmit an indication of the selected DMRS configurations for each group of layers to a base station via a field in a report. The base station may accordingly determine a DMRS configuration for each group of layers based on the DMRS configurations indicated by the UE.

公开(公告)号：US11469831B2

公开(公告)日：2022-10-11

申请号：US16577184

申请日：2019-09-20

Applicant: QUALCOMM Incorporated

Inventor： Haim Mendel Weissman ,  Michael Levitsky ,  Alexander Vladimir Sverdlov ,  Assaf Touboul

IPC: H04B17/21 ,  H04W4/44 ,  H04W4/70 ,  H04L27/36 ,  H04W24/10 ,  H04W52/52

Abstract: The apparatus operates communicates with a second wireless device during an active period and performs a radio impairment calibration during a periodic silent period. The calibration may include a receiver calibration, e.g., including gain state training. The calibration may comprise a transmitter calibration.

公开(公告)号：US20220295518A1

公开(公告)日：2022-09-15

申请号：US17200167

申请日：2021-03-12

Applicant: QUALCOMM Incorporated

Inventor： Idan Michael Horn ,  Assaf Touboul ,  Shay Landis ,  Michael Levitsky

IPC: H04W72/12 ,  H04W72/04 ,  H04W72/08

Abstract: Wireless communication techniques for supporting, selecting, and using multiple waveforms and/or multiple decoders for downlink wireless communication are discussed. A UE may transmit to a base station a request to use a first waveform during a first time period for downlink wireless communication. The UE may receive from the base station a response to the request that includes an indication of a selected waveform to use during the first time period for the downlink wireless communication.

公开(公告)号：US11444672B2

公开(公告)日：2022-09-13

申请号：US17202922

申请日：2021-03-16

Applicant: QUALCOMM Incorporated

Inventor： Peer Berger ,  Shay Landis ,  Moshe Ben-Ari ,  Assaf Touboul ,  Amit Bar-Or Tillinger ,  Michael Levitsky ,  Cheol Hee Park ,  Haim Weissman ,  Jungsik Park ,  In Hyuck Yeo

IPC: H04B7/06 ,  H04L5/00

Abstract: Aspects relate to mechanisms for a wireless communication device to select between a cyclic delay diversity mode and an antenna switch diversity mode for transmission of a signal based on at least one parameter associated with communication over a wireless channel. The parameter(s) may include a channel estimation parameter associated with the wireless channel, a communication parameter associated with at least one communication on the wireless channel, or a combination thereof.

公开(公告)号：US20220255778A1

公开(公告)日：2022-08-11

申请号：US17169280

申请日：2021-02-05

Applicant: QUALCOMM Incorporated

Inventor： Daniel Paz ,  Michael Levitsky ,  Assaf Touboul ,  Shay Landis ,  Amit Bar-Or Tillinger ,  Ronen Shaked

IPC: H04L25/49 ,  H04W72/04 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit signaling that configures a wireless device to use a multi-level coding (MLC) procedure to communicate with a base station. Based on receiving the signaling, the wireless device may select a channel quality indicator (CQI) index from a set of CQI indices that are associated with an MLC procedure. In some examples, the wireless device selects the CQI index from a set of CQI indices that includes both bit-interleaved coded modulation (BICM)-based and MLC-based CQI indices. In other examples, the wireless device selects the CQI index from a set of CQI indices that includes solely MLC-based CQI indices. The wireless device may transmit the selected CQI index to the base station. And the base station may select a modulation and coding scheme for subsequent transmissions to the wireless device based on the received CQI index.

公开(公告)号：US11310833B2

公开(公告)日：2022-04-19

申请号：US16556146

申请日：2019-08-29

Applicant: QUALCOMM Incorporated

Inventor： Ori Auslender ,  Ran Berliner ,  Ambarish Tripathi ,  Junsheng Han ,  Muhammad Nazmul Islam ,  Michael Levitsky

IPC: H04W74/08 ,  H04W56/00 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine to initiate a random access channel (RACH) procedure with a base station (BS). The UE may determine, based at least in part on determining to initiate the RACH procedure, whether a timing alignment timer, associated with a timing alignment of the UE and the BS, is expired. The UE may initiate the RACH procedure using the timing alignment based at least in part on determining that the timing alignment timer is not expired. Numerous other aspects are provided.

公开(公告)号：US11310021B2

公开(公告)日：2022-04-19

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.