公开(公告)号：US11424884B2

公开(公告)日：2022-08-23

申请号：US17033656

申请日：2020-09-25

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Sayed Khairy Abdelghaffar ,  Alexandros Manolakos ,  Weimin Duan ,  Pavan Kumar Vitthaladevuni ,  Krishna Kiran Mukkavilli

IPC: H04W72/04 ,  H04L5/00

Abstract: An apparatus for wireless communication transmits a demodulation reference signal (DMRS) for at least eight orthogonal DMRS ports in a single symbol of at least one slot. The apparatus also transmits data in the at least one slot. The apparatus may correspond to a base station transmitting DMRS and downlink data. The apparatus may correspond to a user equipment (UE) transmitting DMRS and uplink data. The apparatus may bundle the DMRS across multiple slots with a bundled DMRS including a first set of the DMRS ports in a first single symbol of a first slot and a second set of the DMRS ports in a second single symbol of a second slot. The apparatus may transmit the DMRS in only a single slot in a physical resource block group (PRG) including two or more resource blocks using four frequency domain orthogonal cover codes (FD-OCC) and a frequency offset pattern.

公开(公告)号：US11350269B2

公开(公告)日：2022-05-31

申请号：US17021704

申请日：2020-09-15

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Weimin Duan ,  Muhammad Sayed Khairy Abdelghaffar ,  Pavan Kumar Vitthaladevuni ,  Krishna Kiran Mukkavilli

IPC: H04W8/24 ,  H04W76/10

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for the establishment of a communication link between a base station and a user equipment (UE). The UE may have a spatial partial reciprocity capability. The UE may be configured to determine antenna cross-correlation information for at least a first subset of antenna elements in the UE. The cross-correlation information may include one or more correlation parameters (e.g., correlation coefficients), a correlation model, or both. The UE may transmit sounding reference signals for a second set of antenna elements in accordance with the spatial partial reciprocity capability. The UE may also transmit an indication of the cross-correlation information for at least the first subset of antenna elements of the UE. The base station may use such information to derive correlation parameters for the unsounded antennas and determine precoders for downlink communications.

公开(公告)号：US20210136566A1

公开(公告)日：2021-05-06

申请号：US17021704

申请日：2020-09-15

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Weimin Duan ,  Muhammad Sayed Khairy Abdelghaffar ,  Pavan Kumar Vitthaladevuni ,  Krishna Kiran Mukkavilli

IPC: H04W8/24 ,  H04W76/10

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for the establishment of a communication link between a base station and a user equipment (UE). The UE may have a spatial partial reciprocity capability. The UE may be configured to determine antenna cross-correlation information for at least a first subset of antenna elements in the UE. The cross-correlation information may include one or more correlation parameters (e.g., correlation coefficients), a correlation model, or both. The UE may transmit sounding reference signals for a second set of antenna elements in accordance with the spatial partial reciprocity capability. The UE may also transmit an indication of the cross-correlation information for at least the first subset of antenna elements of the UE. The base station may use such information to derive correlation parameters for the unsounded antennas and determine precoders for downlink communications.

公开(公告)号：US20210105106A1

公开(公告)日：2021-04-08

申请号：US17061396

申请日：2020-10-01

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Alexandros Manolakos ,  Peter Gaal

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

Abstract: Methods, systems, and devices for wireless communications are described that provide for multiple instances of aperiodic tracking reference signals (TRSs) that use a same set of large-scale channel properties. If two or more aperiodic TRS transmissions are triggered by downlink control information from a base station with a same transmission configuration indicator (TCI) state, a UE that receives the two or more aperiodic TRS transmissions may measure the multiple instances of the aperiodic TRS transmissions assuming that the same large scale parameters or properties can be inferred from each of the aperiodic TRS transmissions. The UE may then update one or more time tracking parameters, frequency tracking parameters, or combinations thereof, based on the same large scale transmission parameters being used for the multiple instances of the aperiodic TRS transmissions.

公开(公告)号：US12273183B2

公开(公告)日：2025-04-08

申请号：US17691855

申请日：2022-03-10

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Huilin Xu ,  Lianghai Ji ,  Mehmet Izzet Gurelli ,  Jun Ma ,  Qiang Wu ,  Bala Ramasamy ,  Karthik Anantha Swamy

IPC: H04B7/185 ,  H04L5/00 ,  H04W56/00

Abstract: Systems and techniques are provided for wireless communications performed at a network entity. For example, the systems and techniques can include obtaining, at the network entity, a target relative time difference (RTD). A transmission timing pre-compensation can be determined at the network entity between a first reference signal and a second reference signal, wherein the transmission timing pre-compensation is determined based on the target RTD and one or more network delay components. The first reference signal and the second reference signal can be transmitted using the transmission timing pre-compensation to offset the first reference signal from the second reference signal by the target RTD.

公开(公告)号：US12191959B2

公开(公告)日：2025-01-07

申请号：US18503057

申请日：2023-11-06

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Fei Huang

IPC: H04L5/12 ,  H04B7/0426 ,  H04B7/06 ,  H04L1/1812 ,  H04L5/00

Abstract: Aspects presented may enable RF sensing to be adaptive to the environment to improve the sensing, performance, and/or the spectrum efficiency of cellular systems and the power efficiency of RF sensing nodes. In one aspect, an RF sensing node extracts one or more features for a set of objects of an area via at least one non-RF sensor. The RF sensing node transmits, to a network entity, the one or more features or at least one non-RF measurement derived from the one or more features. The RF sensing node receives, from the network entity, an RRS transmission configuration derived based on the one or more features or the at least one non-RF measurement transmitted to the network entity.

公开(公告)号：US12120544B2

公开(公告)日：2024-10-15

申请号：US17317718

申请日：2021-05-11

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Alexandros Manolakos ,  Tingfang Ji ,  Wanshi Chen

IPC: H04W24/10 ,  H04L5/00 ,  H04W72/21 ,  H04W80/02

CPC classification number: H04W24/10 ,  H04L5/0051 ,  H04W72/21 ,  H04W80/02

Abstract: Disclosed are techniques for reducing the overhead of low layer positioning reports. In an aspect, a user equipment (UE) performs at least one positioning measurement of at least one downlink positioning reference signal (DL-PRS) received from at least one transmission-reception point (TRP) during a positioning session, and reports, to a positioning entity via low layer signaling, a relative value of the at least one positioning measurement relative to an expected value of the at least one positioning measurement, wherein the relative value of the at least one positioning measurement is a difference between the expected value of the at least one positioning measurement and a measured value of the at least one positioning measurement.

公开(公告)号：US12119973B2

公开(公告)日：2024-10-15

申请号：US18461444

申请日：2023-09-05

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：US12072428B2

公开(公告)日：2024-08-27

申请号：US17640651

申请日：2020-11-04

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Weimin Duan ,  Gokul Sridharan ,  Wanshi Chen

IPC: G01S5/00 ,  G01S5/02 ,  H04L5/00 ,  H04W24/08

CPC classification number: G01S5/0063 ,  G01S5/0236 ,  H04L5/0051 ,  H04W24/08

Abstract: During positioning of a user equipment (UE), downlink (DL) positioning reference signals (PRS) transmitted by one or more transmission reception point (TRP) in a wireless communication system may be preempted or punctured by higher priority transmissions, such as ultra-reliable low-latency traffic (URLLC). A PRS preemption indication (PI) may be provided to a UE by a serving TRP identifying one or more TRPs affected by preemption. The PRS PI may further identify the time domain and frequency domain of the preempted DL PRS transmissions. The PRS PI may identify the time domain, e.g., based on a number of PRS symbols between two monitoring occasions, wherein only PRS symbols that contain downlink positioning reference signals associated with the group of TRPs are counted. The PRS PI may identify the frequency domain by identifying at least one of four or more frequency sub-bands of the preempted DL PRS transmissions.

公开(公告)号：US12052073B2

公开(公告)日：2024-07-30

申请号：US17846901

申请日：2022-06-22

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Hyojin Lee ,  Seyong Park

IPC: H04B7/0456 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/06

CPC classification number: H04B7/0478 ,  H04B7/0417 ,  H04B7/0639 ,  H04B7/0452

Abstract: Disclosed are systems, apparatuses, processes, and computer-readable media for wireless communications. For example, an example of a process may include receiving, at a network device (e.g., a user equipment (UE)) from a network entity via a number of sensing streams based on a maximum of Nt−J sensing streams, a waveform including communications resources and sensing resources. The waveform has a rank Nt and J is a number of layers scheduled for multiple-input multiple-output (MIMO) communications that is less than Nt. The process may further include processing at least the communications resources of the waveform.