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    COMMUNICATION SYSTEM AND METHOD FOR TRANSFORMING SIGNALS BETWEEN TIME DOMAIN AND FREQUENCY DOMAIN USING A DEFINED DISCRETE FOURIER TRANSFORM SIZE
    11.
    发明申请
    COMMUNICATION SYSTEM AND METHOD FOR TRANSFORMING SIGNALS BETWEEN TIME DOMAIN AND FREQUENCY DOMAIN USING A DEFINED DISCRETE FOURIER TRANSFORM SIZE 审中-公开

    公开(公告)号：US20200045701A1

    公开(公告)日：2020-02-06

    申请号：US16596199

    申请日：2019-10-08

    Applicant: Sun Patent Trust

    Inventor： Shinsuke Takaoka ,  Masayuki Hoshino ,  Kenichi Miyoshi

    IPC: H04W72/04 ,  H04J1/00 ,  G06F17/14 ,  H04L5/00 ,  H04L27/26 ,  H04J11/00 ,  H04J4/00

    Abstract: A communication system includes a communication apparatus and a base station. The communication apparatus includes a Discrete Fourier Transform (DFT) transformer which transforms a time-domain signal into a frequency-domain signal with a DFT size that is a product of powers of a plurality of values; a mapper which maps the frequency-domain signal on a plurality of frequency bands, each frequency band being located at a position separate from position(s) of other(s) of the plurality of frequency bands; and a signal generator which generates a single carrier-frequency division multiple access (SC-FDMA) time-domain signal from the mapped signal. The base station includes a receiver which receives the SC-FDMA time-domain signal; a combiner which generates the frequency-domain signal from the SC-FDMA time-domain signal; and a transformer which transforms the frequency-domain signal into the time-domain signal with an inverse Discrete Fourier Transform (IDFT) having the DFT size.

    Apparatus and method for transforming a signal in a frequency domain to a sequence in a time domain
    12.
    发明授权
    Apparatus and method for transforming a signal in a frequency domain to a sequence in a time domain 有权

    公开(公告)号：US10484994B2

    公开(公告)日：2019-11-19

    申请号：US16209172

    申请日：2018-12-04

    Applicant: Sun Patent Trust

    Inventor： Shinsuke Takaoka ,  Masayuki Hoshino ,  Kenichi Miyoshi

    IPC: H04W72/04 ,  G06F17/14 ,  H04J1/00 ,  H04J4/00 ,  H04L27/26 ,  H04L5/00 ,  H04J11/00 ,  H04W88/08

    Abstract: A communication apparatus includes a receiver, a combiner, and a transformer. The receiver receives signals mapped on plural frequency bands. A size of at least one of the frequency bands is a multiple of a product of two or more powers of prime numbers, which are integer numbers greater than 1 and are different from each other. An exponent for at least one of the prime numbers is an integer greater than 1. The combiner combines the received signals into a combined signal. The transformer transforms the combined signal in a frequency domain into a symbol sequence in a time domain with an inverse discrete Fourier transform (IDFT) having a size that is a product of powers of plural values. The values are integer numbers greater than 1 and are different from each other. An exponent for at least one of the values is an integer greater than 1.

    Radio communication terminal and radio communication method
    13.
    发明授权
    Radio communication terminal and radio communication method 有权

    公开(公告)号：US10285161B2

    公开(公告)日：2019-05-07

    申请号：US15808745

    申请日：2017-11-09

    Applicant: Sun Patent Trust

    Inventor： Yasuaki Yuda ,  Seigo Nakao ,  Ayako Horiuchi ,  Akihiko Nishio ,  Daichi Imamura ,  Kenichi Miyoshi

    IPC: H04W72/00 ,  H04W24/10 ,  H04W24/08 ,  H04L5/00 ,  H04W72/04 ,  H04W72/08 ,  H04B17/318 ,  H04B17/345 ,  H04W36/00

    Abstract: Provided is a radio communication terminal which is capable of measuring quality in communication with a handover destination with high accuracy. The radio communication terminal is capable of communicating with a base station or a relay node, and includes: a receiver which receives control information including information relating to measurement of measuring quality of a neighbor cell; an extractor which extracts information on a subframe where the measurement should be performed, which is a subframe where only transmission of a signal from the relay node connected to the base station is performed, from the information relating to the measurement; a measurement section which performs the measurement, on a subframe basis, based on the extracted information on the subframe where the measurement should be performed; and a transmitter which transmits a result of the measurement to the base station or the relay node.

    COMMUNICATION APPARATUS AND COMMUNICATION METHOD FOR INVERSE DISCRETE-FOURIER-TRANSFORMING A FREQUENCY DOMAIN SIGNAL INTO A TIME DOMAIN SYMBOL SEQUENCE
    17.
    发明申请
    COMMUNICATION APPARATUS AND COMMUNICATION METHOD FOR INVERSE DISCRETE-FOURIER-TRANSFORMING A FREQUENCY DOMAIN SIGNAL INTO A TIME DOMAIN SYMBOL SEQUENCE 审中-公开
    反向离散傅立叶变换将频域信号转换成时域符号序列的通信装置和通信方法

    公开(公告)号：US20170048867A1

    公开(公告)日：2017-02-16

    申请号：US15337985

    申请日：2016-10-28

    Applicant: Sun Patent Trust

    Inventor： Shinsuke Takaoka ,  Masayuki Hoshino ,  Kenichi Miyoshi

    IPC: H04W72/04 ,  H04L27/26

    CPC classification number: H04W72/0453 ,  G06F17/141 ,  H04J1/00 ,  H04J4/005 ,  H04J11/00 ,  H04L5/0041 ,  H04L27/2602 ,  H04L27/2628 ,  H04L27/2636 ,  H04W88/08 ,  Y10S370/916

    Abstract: A communication apparatus includes a receiver, a combiner, and a transformer. The receiver receives signals mapped on plural frequency bands. A size of at least one of the frequency bands is a multiple of a product of two or more powers of prime numbers, which are integer numbers greater than 1 and are different from each other. An exponent for at least one of the prime numbers is an integer greater than 1. The combiner combines the received signals into a combined signal. The transformer transforms the combined signal in a frequency domain into a symbol sequence in a time domain with an inverse discrete Fourier transform (IDFT) having a size that is a product of powers of plural values. The values are integer numbers greater than 1 and are different from each other. An exponent for at least one of the values is an integer greater than 1.

    Abstract translation: 通信装置包括接收机，组合器和变压器。 接收机接收映射在多个频带上的信号。 频带中的至少一个的大小是素数的两个或更多个幂的乘积的倍数，其是大于1并且彼此不同的整数。 素数中的至少一个的指数是大于1的整数。组合器将接收到的信号组合成组合信号。 变压器将具有尺寸为多值的乘积的反离散傅立叶变换（IDFT）的频域中的组合信号变换为时域中的符号序列。 这些值是大于1的整数，彼此不同。 至少一个值的指数是大于1的整数。

    Integrated circuit
    19.
    发明授权
    Integrated circuit 有权

    公开(公告)号：US12267193B2

    公开(公告)日：2025-04-01

    申请号：US17839385

    申请日：2022-06-13

    Applicant: Sun Patent Trust

    Inventor： Yoshihiko Ogawa ,  Seigo Nakao ,  Daichi Imamura ,  Akihiko Nishio ,  Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Kenichi Miyoshi ,  Yasuaki Yuda ,  Sadaki Futagi ,  Takashi Iwai

    IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26 ,  H04W72/0453

    Abstract: Disclosed are a wireless communication base station device and a division number determination method that improves the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit.

    Communication apparatus and method for discrete fourier transforming a time signal to a frequency signal
    20.
    发明授权
    Communication apparatus and method for discrete fourier transforming a time signal to a frequency signal 有权

    公开(公告)号：US11575552B2

    公开(公告)日：2023-02-07

    申请号：US17232856

    申请日：2021-04-16

    Applicant: Sun Patent Trust

    Inventor： Shinsuke Takaoka ,  Masayuki Hoshino ,  Kenichi Miyoshi

    IPC: H04L27/26 ,  G06F17/14 ,  H04J1/00 ,  H04J4/00 ,  H04J11/00 ,  H04L5/00 ,  H04W72/04 ,  H04W88/08

    Abstract: A communication system includes a communication apparatus and a base station. The communication apparatus includes a Discrete Fourier Transform (DFT) transformer which transforms a time-domain signal into a frequency-domain signal with a DFT size that is a product of powers of a plurality of values; a mapper which maps the frequency-domain signal on a plurality of frequency bands, each frequency band being located at a position separate from position(s) of other(s) of the plurality of frequency bands; and a signal generator which generates a single carrier-frequency division multiple access (SC-FDMA) time-domain signal from the mapped signal. The base station includes a receiver which receives the SC-FDMA time-domain signal; a combiner which generates the frequency-domain signal from the SC-FDMA time-domain signal; and a transformer which transforms the frequency-domain signal into the time-domain signal with an inverse Discrete Fourier Transform (IDFT) having the DFT size.

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