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    DEMODULATION OF MODULATION CONSTELLATIONS WITH PROBABILISTIC AMPLITUDE SHAPING
    41.
    发明公开
    DEMODULATION OF MODULATION CONSTELLATIONS WITH PROBABILISTIC AMPLITUDE SHAPING 审中-公开

    公开(公告)号：US20240137261A1

    公开(公告)日：2024-04-25

    申请号：US18547682

    申请日：2021-04-22

    Applicant: QUALCOMM Incorporated

    Inventor： Liangming WU ,  Thomas Joseph RICHARDSON ,  Kexin XIAO ,  Changlong XU ,  Ori SHENTAL ,  Hao XU

    IPC: H04L27/34 ,  H04L5/00

    CPC classification number: H04L27/34 ,  H04L5/0053 ,  H04L5/0091

    Abstract: Methods, systems, and devices for wireless communications are described in which a receiving device, such as a base station or user equipment (UE), may receive an input signal that is modulated according to a probabilistic amplitude shaping (PAS) modulation technique. The receiving device may determine an associated channel noise estimate and may scale the input signal and the channel noise estimate based on a probability distribution parameter that is associated with the PAS modulation. The receiving device may demap the modulation constellation of the input signal based on the scaled input signal and the scaled channel noise estimate and provide one or more bits associated with the PAS modulated constellation. The probability distribution parameter may be estimated at the receiving device, or the transmitting device may provide the probability distribution parameter to the receiving device.

    BIT REPLACING FOR LOW DENSITY PARITY CHECK ENCODING
    42.
    发明公开
    BIT REPLACING FOR LOW DENSITY PARITY CHECK ENCODING 审中-公开

    公开(公告)号：US20240097817A1

    公开(公告)日：2024-03-21

    申请号：US18261982

    申请日：2021-03-18

    Applicant: QUALCOMM INCORPORATED

    Inventor： Wei LIU ,  Thomas Joseph RICHARDSON ,  Liangming WU ,  Changlong XU ,  Ori SHENTAL ,  Hao XU

    IPC: H04L1/00 ,  H03M13/00 ,  H03M13/11

    CPC classification number: H04L1/0041 ,  H03M13/1148 ,  H03M13/6362 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0068

    Abstract: Methods, systems, and devices for wireless communication are described to support replacing values of one or more information bit vectors with one or more corresponding sets of parity bits. A first wireless device may replace an information bit vector with a parity bit vector, using a set of information bits of the information bit vector and based on a parity check matrix, which may result in generating the set of information bits at an information bit vector corresponding to a parity bit column of the parity check matrix, during encoding. The first wireless device may perform a transmission to a second wireless device, which may receive the transmission, decode the set of information bits to the information bit vector corresponding to the parity bit column. The second wireless device may replace other bit estimates of a vector corresponding to an information bit column with the set of information bits.

    METHODS AND APPARATUS FOR USING MOBILE DEVICES AS LOCATION ANCHOR POINTS
    44.
    发明申请
    METHODS AND APPARATUS FOR USING MOBILE DEVICES AS LOCATION ANCHOR POINTS 有权

    公开(公告)号：US20220095263A1

    公开(公告)日：2022-03-24

    申请号：US17457864

    申请日：2021-12-06

    Applicant: QUALCOMM Incorporated

    Inventor： Aleksandar JOVICIC ,  Thomas Joseph RICHARDSON ,  Cyril MEASSON

    IPC: H04W64/00 ,  G01S5/00 ,  G01S13/87

    Abstract: Mobile devices are used as temporary location anchor points, e.g., to supplement fixed location permanent location anchor points, in a wireless communications system in which mobile device locations are determined. A mobile device receives a command or request to operate as a location anchor point. In some embodiments, the command includes time information indicating the amount of time the mobile device is to operate as a location anchor point. In some embodiments, a mobile device operating as a location anchor point reports a received signal strength measurement along with information identifying the device from which the signal was received to a network element, e.g., a location server node. In some embodiments, a mobile device operating as a location anchor point broadcasts a signal providing location information. The mobile device receives compensation for operating as a location anchor point. Compensation may be monetary, services, or benefits provided by the network.

    METHOD AND APPARATUS FOR POWER-EFFICIENT JOINT DIMMING AND VISIBLE LIGHT COMMUNICATION
    49.
    发明申请
    METHOD AND APPARATUS FOR POWER-EFFICIENT JOINT DIMMING AND VISIBLE LIGHT COMMUNICATION 有权
    用于功率联合调试和可见光通信的方法和装置

    公开(公告)号：US20160211914A1

    公开(公告)日：2016-07-21

    申请号：US15052669

    申请日：2016-02-24

    Applicant: QUALCOMM Incorporated

    Inventor： Aleksandar JOVICIC ,  Thomas Joseph RICHARDSON ,  Junyi LI

    IPC: H04B10/116

    CPC classification number: H04B10/116 ,  H04L7/0075

    Abstract: A method, an apparatus, and a computer program product for communication are provided. The apparatus obtains a message for communication using visible light communication (VLC) through a light emitting diode (LED) luminary device and formats the message using a synchronization signal followed by one or more data signals. The synchronization signal and/or the one or more data signals are modulated using a Frequency Shift Keying (FSK) modulation scheme. The apparatus further receives a dimming level value associated with a brightness of light to be emitted from the LED luminary device, generates a waveform with frequencies based on the formatted message and a duty cycle for the LED luminary device based on the dimming level value, and sends the generated waveform to the LED luminary device for communication using VLC.

    Abstract translation: 提供了一种用于通信的方法，装置和计算机程序产品。 该装置通过发光二极管（LED）照明装置获得用于使用可见光通信（VLC）的通信的消息，并且使用同步信号格式化消息，随后是一个或多个数据信号。 使用频移键控（FSK）调制方案来调制同步信号和/或一个或多个数据信号。 该装置还接收与LED发光装置发射的光的亮度相关联的调光电平值，基于调光电平值生成基于格式化消息的频率的波形和LED发光装置的占空比，以及 将生成的波形发送到LED发光装置，以使用VLC进行通信。

    TECHNIQUES FOR USE IN WIDEBAND TIME-OF-ARRIVAL ESTIMATION
    50.
    发明申请
    TECHNIQUES FOR USE IN WIDEBAND TIME-OF-ARRIVAL ESTIMATION 有权
    用于宽带时间估计的技术

    公开(公告)号：US20160202350A1

    公开(公告)日：2016-07-14

    申请号：US14593864

    申请日：2015-01-09

    Applicant: QUALCOMM Incorporated

    Inventor： Jubin JOSE ,  Xinzhou WU ,  Thomas Joseph RICHARDSON

    IPC: G01S11/06 ,  H04W52/54

    CPC classification number: G01S11/06 ,  H04B17/27 ,  H04L27/26 ,  H04W52/16 ,  H04W52/325 ,  H04W52/54

    Abstract: Provided are apparatus and methods for ranging between a plurality of wireless devices. An exemplary method includes, at a first wireless device, transmitting a primary portion symbol comprising a first packet and transmitting a secondary portion symbol. The secondary portion symbol is transmitted simultaneously at a lower transmit power than the primary portion symbol, and the secondary portion symbol comprises a second packet identical to the first packet. The primary portion symbol can be transmitted in a first channel having a substantially 20 MHZ bandwidth and the secondary portion can be transmitted in a second channel having a substantially 20 MHZ bandwidth. The first and second channels are substantially adjacent in frequency. After transmitting the primary portion symbol, for example, a high-throughput long-training-field symbol or a very-high-throughput long-training-field symbol can be repetitively transmitted. This exemplary method enhances time-of-arrival estimation accuracy, minimizes decoding bottlenecking, and maximizes wireless device range.

    Abstract translation: 提供了用于在多个无线设备之间进行测距的装置和方法。 一种示例性方法包括在第一无线设备处发送包括第一分组并发送次要部分符号的主要部分符号。 次要部分符号以比主要部分符号更低的发射功率同时传输，并且次要部分符号包括与第一分组相同的第二分组。 主要部分符号可以在具有大致20MHz带宽的第一信道中发送，并且次级部分可以在具有大致20MHz带宽的第二信道中传输。 第一和第二通道在频率上基本相邻。 在发送主要部分符号之后，例如，可以重复地发送高吞吐量长训练字段符号或非常高吞吐量的长训练字段符号。 该示例性方法增强了到达时间估计精度，使解码瓶颈最小化，并使无线设备范围最大化。

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