公开(公告)号：US11924145B2

公开(公告)日：2024-03-05

申请号：US17850735

申请日：2022-06-27

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Alexandros Manolakos ,  Muhammad Sayed Khairy Abdelghaffar ,  Joseph Binamira Soriaga

IPC: H04L5/10 ,  H04B7/01 ,  H04L5/00 ,  H04W72/23 ,  H04W76/27

CPC classification number: H04L5/10 ,  H04B7/01 ,  H04L5/005 ,  H04W72/23 ,  H04W76/27

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to estimate a signal-to-noise ratio for each antenna port associated with a reception of one or more tracking reference signals. The UE may receive one or more of multiple single-port tracking reference signals, a single multi-port tracking reference signal, or a tracking reference signal associated with multiple power ratios. The UE may be able to estimate a channel upon receiving a demodulation reference signal. The channel estimation may be based on the reception of one or more of multiple single-port tracking reference signals, the single multi-port tracking reference signal, or the tracking reference signal associated with multiple power ratios. The UE may communicate with the base station based on estimating the channel.

公开(公告)号：US11855826B2

公开(公告)日：2023-12-26

申请号：US17470735

申请日：2021-09-09

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Jun Ma ,  Weimin Duan ,  Mehmet Izzet Gurelli ,  Qiang Wu

IPC: H04B7/08 ,  H04B7/0404 ,  H04B7/06 ,  H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  H04W72/23

CPC classification number: H04L27/2636 ,  H04L5/0048 ,  H04W72/23

Abstract: Example implementations include a method, apparatus and computer-readable medium of wireless communication for applying resource element (RE) skipping to a symbol where a beam change is to occur. A transmitter and a receiver determine that a beam change is to occur during the symbol. The transmitter allocates bits to a subset of REs for the symbol in a frequency domain allocation. Each RE of the subset is spaced apart by a number of empty REs. The transmitter performs an inverse fast Fourier transform (IFFT) on the REs to generate a time domain signal including a number of repetitions of a transmitted waveform. The receiver receives the time domain signal during at least a portion of the symbol. The receiver performs a fast Fourier transform (FFT) on the time domain signal and determines transmitted bits or a channel from the subset of REs output from the FFT.

公开(公告)号：US11846721B2

公开(公告)日：2023-12-19

申请号：US17469780

申请日：2021-09-08

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Seyong Park ,  Alexandros Manolakos

IPC: G01S7/40 ,  G01S13/00 ,  H04W84/04 ,  H04W88/08

CPC classification number: G01S7/40 ,  G01S7/4008 ,  G01S7/4021 ,  G01S13/003 ,  H04W84/042 ,  H04W88/08

Abstract: A radar system may comprise a radar server configured to determine (1) one or more transmit timing parameters and (2) one or more receive timing parameters. The radar server may provide the one or more transmit timing parameters to a first wireless communications system Transmission Reception Point (TRP) configured to use the one or more transmit timing parameters to send a transmit signal. The radar server may provide the one or more receive timing parameters to a second wireless communications system TRP configured to use the one or more receive timing parameters to receive an echo signal corresponding to a reflection of the transmit signal from a target.

公开(公告)号：US11843964B2

公开(公告)日：2023-12-12

申请号：US17483201

申请日：2021-09-23

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Sony Akkarakaran ,  Jingchao Bao ,  Weimin Duan ,  Tao Luo ,  Juan Montojo

IPC: H04W4/00 ,  H04W24/10 ,  H04L5/00 ,  H04L43/0864 ,  H04B17/345 ,  H04B17/391 ,  H04B17/318

CPC classification number: H04W24/10 ,  H04B17/318 ,  H04B17/345 ,  H04B17/391 ,  H04L5/0048 ,  H04L43/0864

Abstract: Disclosed are various techniques for wireless communication. In an aspect, a user equipment (UE) identifies a set of positioning sources, each positioning source comprising a positioning reference signal (PRS) resource, a PRS resource set, a PRS frequency layer, and/or a transmission/reception point (TRP). From the set of positioning sources, the UE identifies a consistency group comprising a collection of positioning sources grouped based on expected values of at least one metric of a reference signal from each positioning source, measured values of the at least one metric for the reference signal from each positioning source, and an error threshold. The UE identifies one or more subsets of positioning sources within the consistency group, each subset having at least one metric error value. The UE reports, to a network entity, information about the consistency group and information about at least one of the subsets of positioning sources within the consistency group.

公开(公告)号：US11811570B2

公开(公告)日：2023-11-07

申请号：US17404884

申请日：2021-08-17

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Alexandros Manolakos ,  Weimin Duan ,  Jay Kumar Sundararajan ,  Wanshi Chen ,  Krishna Kiran Mukkavilli ,  Tingfang Ji ,  Naga Bhushan

IPC: H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2607 ,  H04L5/0051 ,  H04L27/2613

Abstract: Sounding reference signals (SRS) transmitted by a UE, e.g., for positioning or channel estimation, may be configured for one or both of frequency tone level cyclic shift and symbol level code, which, for example, enables multiplexing a greater number of UEs. The frequency tone level cyclic shift is produced by jointly processing a number of symbols with an extended cyclic shift structure. The SRS may be configured using a symbol group level that indicates the number of symbols associated with a cyclic shift structure, and an outer code that indicates a multiplier applied to the SRS at the symbol level, which increases the multiplexing opportunities. The symbol level code may further indicate an extended cyclic shift indicating a linear increase in phase rotation across tones in symbols associated with the symbol group level.

公开(公告)号：US20230262471A1

公开(公告)日：2023-08-17

申请号：US17674822

申请日：2022-02-17

Applicant: QUALCOMM Incorporated

Inventor： Hyojin Lee ,  Hwan Joon Kwon ,  Weimin Duan

IPC: H04W16/14 ,  H04W48/10 ,  H04L5/00 ,  H04W24/08

CPC classification number: H04W16/14 ,  H04W48/10 ,  H04L5/0048 ,  H04W24/08 ,  H04L5/001

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a broadcast message via a cell associated with a network entity. The broadcast message may include an indication that the cell supports a first radio access technology (RAT) and a second RAT. In some examples, the first RAT may be associated with a first subcarrier spacing (SCS) and the second RAT may be associated with a second SCS. The UE may perform measurements of one or more reference signals associated with the first RAT based on the indication. In some examples, the one or more reference signals may be multiplexed with physical downlink shared channel (PDSCH) data. The UE may transmit a channel feedback report to the network entity based on performing measurements of the one or more reference signals, and may demodulate the PDSCH data using the first SCS and the second SCS.

公开(公告)号：US11711827B2

公开(公告)日：2023-07-25

申请号：US17201291

申请日：2021-03-15

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Alexandros Manolakos ,  Seyedkianoush Hosseini ,  Muhammad Sayed Khairy Abdelghaffar

IPC: H04W72/00 ,  H04W72/51 ,  H04L5/00 ,  H04L27/26 ,  H04W76/27 ,  H04W72/0453

CPC classification number: H04W72/51 ,  H04L5/0051 ,  H04L27/2607 ,  H04L27/26025 ,  H04W72/0453 ,  H04W76/27

Abstract: Techniques are provided for utilizing positioning reference signals (PRS) in full duplex scenarios. An example method for wireless communication by a user equipment (UE) includes receiving a positioning reference signal in a time slot, wherein the positioning reference signal spans a first frequency bandwidth, transmitting a signal in a second frequency bandwidth during the time slot, wherein the second frequency bandwidth includes frequencies within the first frequency bandwidth, and processing the positioning reference signal received in the first frequency bandwidth excluding the frequencies in the second frequency bandwidth.

公开(公告)号：US11635505B2

公开(公告)日：2023-04-25

申请号：US17171557

申请日：2021-02-09

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Alexandros Manolakos ,  Seyong Park ,  Tingfang Ji

IPC: G01S13/00 ,  G01S13/20 ,  G01S13/44 ,  G01S13/50

Abstract: Techniques are disclosed for determining the location of an object using RF sensing. More specifically, an object may be detected in a wireless data communication network using radar techniques in which one or more base stations act as a transmitter and a mobile device (e.g., a user equipment (UE)) acts as a receiver in a bistatic or multi-static radar configuration. By comparing the time a line-of-sight (LOS) signal is received by the mobile device with that of an echo signal from a reflection of an RF signal from the object, a position of the object can be determined. Depending on desired functionality, this position can be determined by the UE, or by a network entity.

公开(公告)号：US20230077735A1

公开(公告)日：2023-03-16

申请号：US17472011

申请日：2021-09-10

Applicant: QUALCOMM Incorporated

Inventor： Lianghai Ji ,  Qiang Wu ,  Mehmet Izzet Gurelli ,  Weimin Duan ,  Karthik Anantha Swamy

IPC: H04W72/02 ,  H04W72/12

Abstract: Methods, systems, and devices for reducing latency for closed loop sidelink communications for non-terrestrial networks (NTNs) are described. In some examples, a first user equipment (UE) may transmit, to a network entity, a message requesting an allocation of sidelink resources for the first UE and an allocation of sidelink resources for a second UE. The first UE may receive, from the network entity in response to the request message, an indication of a first set of sidelink resources for the first UE. In some examples, the first UE may transmit one or more data messages to the second UE, including an indication of a second set of sidelink resources, an indication that the network entity may directly allocate the second set of sidelink resources, or both. In some example, the first UE may receive one or more data messages from the second UE on the second set of sidelink resources.

公开(公告)号：US11576139B2

公开(公告)日：2023-02-07

申请号：US17245422

申请日：2021-04-30

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Weimin Duan ,  Sony Akkarakaran

IPC: H04W56/00 ,  H04W24/10

Abstract: In an aspect, a communications node (e.g., TRP or UE) obtains (e.g., measures) timing group delays associated with different positioning procedures to determine time drift information, and reports the time drift information to an external entity for position estimation. In some designs, positioning procedures may comprise round trip time (RTT) measurements or uplink or downlink Difference Of Arrival (TDOA) measurements. In some designs, the time drift information indicates a drift rate function.