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    ENHANCED PHASE TRACKING REFERENCE SIGNAL BASED ON CHIRP SEQUENCES
    1.
    发明公开
    ENHANCED PHASE TRACKING REFERENCE SIGNAL BASED ON CHIRP SEQUENCES 审中-公开

    公开(公告)号：US20240187291A1

    公开(公告)日：2024-06-06

    申请号：US18550582

    申请日：2022-03-14

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Andreas FALKENBERG

    IPC: H04L27/10 ,  H04L27/26

    CPC classification number: H04L27/103 ,  H04L27/2613 ,  H04L27/26412

    Abstract: A method for phase tracking reference signal (PT-RS) signals transmission includes receiving, by a user equipment (UE) from a base station (BS), one or more messages comprising uplink PT-RS configuration parameters and transmitting, by the UE to the BS, PT-RS signals via radio resources of a physical uplink shared channel (PUSCH). The transmitting is based on: the uplink PT-RS configuration parameters, a PT-RS sequence generation process for generating a PT-RS sequence, wherein the PT-RS sequence is based, on a, chirp signal with a time-varying frequency according to a chirp factor and an PT-RS mapping process for mapping the generated PT-RS sequence to the radio resources of the PUSCH.

    Transmission device and method as well as reception device and method
    2.
    发明授权
    Transmission device and method as well as reception device and method 有权

    公开(公告)号：US11985015B2

    公开(公告)日：2024-05-14

    申请号：US17309916

    申请日：2019-12-27

    Applicant: SONY GROUP CORPORATION

    Inventor： Sawako Kiriyama

    IPC: H04B1/69 ,  H04B1/707 ,  H04L27/10 ,  H04L27/144 ,  H04L27/156

    CPC classification number: H04L27/103 ,  H04L27/156

    Abstract: The present technology relates to a transmission device and method as well as a reception device and method which can suppress the influence of interference. The transmission device sets different methods of changing the frequency of the chirp modulation for each of first information and second information different from the first information. The transmission device transmits the chirp-modulated first information or second information in accordance with the set frequency change method. The present technology can be applied to a wireless communication system.

    Determining frequency band suitability for communication
    3.
    发明授权
    Determining frequency band suitability for communication 有权

    公开(公告)号：US11898440B2

    公开(公告)日：2024-02-13

    申请号：US17600335

    申请日：2020-04-02

    Applicant: Raptor Data Limited

    Inventor： Colin Maclean ,  Nancy Jayakumar ,  Gordon Cowie

    IPC: E21B47/16 ,  H04B11/00 ,  E21B47/12 ,  G10K11/24 ,  H04L27/10 ,  H04L5/00

    CPC classification number: E21B47/16 ,  G10K11/24 ,  H04B11/00 ,  H04L27/103 ,  H04L5/0064

    Abstract: An apparatus for determining a suitability of a frequency band for data communication with a node by way of a communication channel may be provided. The apparatus may comprise a receiver configured to receive first and second signals from the node by way of the communication channel, the first and second signals having frequencies within the frequency band. The apparatus may comprise processing circuitry communicatively coupled to the receiver, the processing circuitry being configured to determine a calibration function depending on the first signal, process the second signal depending on the calibration function, determine the suitability of the frequency band for data communication with the node by way of the communication channel depending on the processed second signal and output an indication of the said suitability. The processing circuitry may be configured to determine the suitability of the frequency band for data communication with the node depending on the processed second signal by comparison of the processed second signal to predetermined reference data.

    Signal concentrator device
    4.
    发明授权
    Signal concentrator device 有权

    公开(公告)号：US09794095B2

    公开(公告)日：2017-10-17

    申请号：US14755602

    申请日：2015-06-30

    Applicant: Semtech Corporation

    Inventor： Nicolas Sornin ,  Ludovic Champion

    IPC: H04B1/00 ,  H04L27/10 ,  H04W88/16 ,  H04L27/14 ,  H04B1/69

    CPC classification number: H04L27/103 ,  H04B1/69 ,  H04B2001/6912 ,  H04L27/14 ,  H04W88/16

    Abstract: A gateway device having a baseband processor for processing a plurality signals carrying a digital information modulated in the form of chirp signal, the chirp signals being either base chirps, for which the frequency changes from an initial instant to a final instant according to a predetermined base chirp function or modulated chirps, whose instantaneous frequencies vary according to one of a plurality of a functions that differ from said base chirp function, characterized in that the gateway device is arranged for simultaneously demodulating a plurality of signals having received at a same frequency and exhibiting different bitrates.

    Encrypting communications
    5.
    发明授权
    Encrypting communications 有权
    加密通信

    公开(公告)号：US09319098B2

    公开(公告)日：2016-04-19

    申请号：US13451512

    申请日：2012-04-19

    Applicant: Paul Dominic Hiscock

    Inventor： Paul Dominic Hiscock

    IPC: H04L29/06 ,  H04B1/713 ,  H04L27/10

    CPC classification number: H04B1/713 ,  H04L27/10 ,  H04L27/103

    Abstract: A method of securely communicating a data chirp signal from a transmitter to a receiver, the chirp signal comprising at least one symbol, each symbol comprising one or more identical chirps, each chirp encoding a symbol value, the method comprising: negotiating between the transmitter and the receiver encryption parameters of the chirp signal, the encryption parameters defining at least one property of each symbol of the chirp signal; at the transmitter, encrypting the chirp signal as negotiated; at the transmitter, encoding data in the chirp signal via the symbol value of each chirp; and transmitting the encrypted and encoded chirp signal from the transmitter to the receiver.

    Abstract translation: 一种将数据线性调频信号从发射机安全地传送到接收机的方法，所述啁啾信号包括至少一个符号，每个符号包括一个或多个相同的啁啾，每个啁啾编码符号值，所述方法包括：在发射机和 啁啾信号的接收机加密参数，加密参数定义啁啾信号的每个符号的至少一个属性; 在发射机处，协商加密啁啾信号; 在发射机处，通过每个啁啾的符号值对啁啾信号中的数据进行编码; 并将加密和编码的啁啾信号从发射机发射到接收机。

    Orthogonal frequency chirp multiple accessing systems and methods
    7.
    发明授权
    Orthogonal frequency chirp multiple accessing systems and methods 有权
    正交频率啁啾多址接入系统及方法

    公开(公告)号：US09094107B1

    公开(公告)日：2015-07-28

    申请号：US14244774

    申请日：2014-04-03

    Applicant: Rajendra Kumar

    Inventor： Rajendra Kumar

    IPC: H04B1/00 ,  H04B1/692 ,  H04L27/10 ,  H04L27/12 ,  H04L27/14 ,  H04B1/69

    CPC classification number: H04L27/14 ,  H04B1/69 ,  H04B2001/6912 ,  H04J11/00 ,  H04J2011/002 ,  H04L5/0019 ,  H04L27/103 ,  H04L27/12 ,  H04L27/2602

    Abstract: Various embodiments of the invention are directed to orthogonal frequency chirp multiple accessing (OFCM) systems and methods. For example, various embodiments of the OFCM transmitter may utilize an architecture comprised of a baseband modulation subsystem, a subsystem for generating multiplicity N orthogonal frequency chirp waveforms, and a bank of multiplicity N spread spectrum modulators. Various embodiments of the OFCM receiver may comprise of a subsystem for generating complex conjugates of multiplicity N orthogonal frequency chirp waveforms, a bank of multiplicity N spread spectrum demodulators, a symbol estimator, a symbol timing estimator, a frequency offset estimator, a carrier phase tracking loop, a multi channel estimator, and a baseband demodulation subsystem.

    Abstract translation: 本发明的各种实施例涉及正交频率啁啾多址（OFCM）系统和方法。 例如，OFCM发射机的各种实施例可以利用由基带调制子系统，用于产生多个N个正交频率啁啾波形的子系统和一组多个N个扩频调制器组成的架构。 OFCM接收机的各种实施例可以包括用于产生多个N个正交频率啁啾波形的复共轭的子系统，一组多个N个扩展频谱解调器，一个符号估计器，一个符号定时估计器，一个频率偏移估计器，一个载波相位跟踪 环路，多信道估计器和基带解调子系统。

    Method and Apparatus for Channel Estimation to Electro-Magnetic Wave Multi Path Between Sender and Receiver by Using Chirp Signal
    8.
    发明申请
    Method and Apparatus for Channel Estimation to Electro-Magnetic Wave Multi Path Between Sender and Receiver by Using Chirp Signal 有权

    公开(公告)号：US20080165833A1

    公开(公告)日：2008-07-10

    申请号：US11884649

    申请日：2006-02-08

    Applicant: Kyung Kuk Lee

    Inventor： Kyung Kuk Lee

    IPC: H04B1/69

    CPC classification number: H04B1/69 ,  H04B2001/6912 ,  H04L25/0202 ,  H04L27/103 ,  H04L27/14

    Abstract: Disclosed is a method and an apparatus for channel estimation regarding electromagnetic wave multi-path characteristics between a sender and a receiver by using a chirp signal. The method includes the steps of (a) multiplying a received composite signal by a narrowband chirp-shift-keying signal or narrowband multiple center-frequency-chirp signal generated by the receiver itself and outputting a sum of individual frequency components resulting from difference in distance of multiple paths for up-chirp and down-chirp signal portions of a chirp-shift-keying signal, respectively, the received composite signal being formed by generating narrowband chirp-shift-keying signals or narrowband multiple center-frequency-chirp signals by the sender, sending the signals by a transmission antenna, receiving the signals by a reception antenna of the receiver via a multi-path channel, superimposing the signals, and adding the signals; (b) multiplying outputs of the up-chirp and down-chirp signal portions of the sum of individual frequency components and calculating a tolerance frequency output; (c) compensating for a frequency tolerance of the sum of individual frequency components by using the tolerance frequency output and generating a frequency compensation output; (d) compensating for discontinuity of chirp-shift-keying signals resulting from use of the narrowband chirp-shift-keying signals or the narrowband multiple center-frequency-chirp signals regarding the frequency compensation output and generating a discontinuity compensation output having no discontinuity; (e) decomposing the discontinuity compensation output into individual multi-path signals by using a frequency analysis method; and (f) extracting an attenuation component and a time delay component caused by the multi-path channel from the individual multi-path signals by using a size of frequency components of each frequency.

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