公开(公告)号：US10986569B2

公开(公告)日：2021-04-20

申请号：US16854711

申请日：2020-04-21

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami

IPC: H04W48/18 ,  H04W88/06 ,  H04W88/14 ,  H04W4/00 ,  H04L29/08 ,  H04W76/16 ,  H04W4/18 ,  H04W76/15 ,  H04L1/00

Abstract: A plurality of communication stations transmit a plurality of modulated signals so that data is efficiently transmitted from a network through negotiation by a communication terminal capable of transmitting and receiving modulated signals of a plurality of wireless communication schemes with a proxy server present on a network. The communication terminal receives a plurality of modulated signals to obtain data. Thus, the efficiency of frequency utilization is improved.

公开(公告)号：US10979268B2

公开(公告)日：2021-04-13

申请号：US16591877

申请日：2019-10-03

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Yoshio Urabe ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04L27/26 ,  H04L5/00 ,  H04B7/0413 ,  H04B7/00 ,  H04L1/16 ,  H04B7/06 ,  H04B7/0456 ,  H04J11/00

Abstract: A transmitting method includes: configuring a frame using a plurality of orthogonal frequency-division multiplexing (OFDM) symbols, by allocating a plurality of transmission data to a plurality of areas; and transmitting the frame. The plurality of areas are each identified by at least one time resource among resources and at least one frequency resource among frequency resources. The frame includes a first period in which a preamble is transmitted, and a second period in which the plurality of transmission data are transmitted by at least one of time division and frequency division. The second period includes a first area, and the first area includes a data symbol generated from first transmission data, a data symbol generated from second transmission data and subsequent to the data symbol generated from the first transmission data, and a dummy symbol subsequent to the data symbol generated from the second transmission data.

公开(公告)号：US10944526B2

公开(公告)日：2021-03-09

申请号：US16568470

申请日：2019-09-12

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Yoshio Urabe ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04L12/801 ,  H04L12/24 ,  H04L5/14 ,  H04L5/00 ,  H04L1/00 ,  H04J1/02 ,  H04J3/02 ,  H04L27/26 ,  H04J11/00

Abstract: A transmitting method includes: configuring a frame using a plurality of orthogonal frequency-division multiplexing (OFDM) symbols, by allocating time resources and frequency resources to a plurality of transmission data; and transmitting the frame, wherein the frame includes a first period in which a preamble which includes information on a frame configuration of the frame is transmitted, and a second period in which the plurality of transmission data are transmitted by at least one of time division and frequency division, and among the plurality of OFDM symbols, OFDM symbols included in the second period include pilot symbols arranged along a time axis with a predetermined spacing therebetween, and a predetermined number of data symbols.

公开(公告)号：US10887136B2

公开(公告)日：2021-01-05

申请号：US16662724

申请日：2019-10-24

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi ,  Hiroyuki Motozuka

IPC: H04L27/04 ,  H04B17/318 ,  H04B7/0408 ,  H04B7/0456 ,  H04L5/00 ,  H04L27/26

Abstract: A transmission device that improves data reception quality includes: a weighting synthesizer that generates a first precoded signal and a second precoded signal from a first baseband signal and a second baseband signal, respectively; a phase changer that applies a phase change of i×Δλ to the second precoded signal; an inserter that inserts a pilot signal into the second precoded signal applied with the phase change; and a phase changer that applies a phase change to the second precoded signal applied with the phase change and inserted with the pilot signal. Δλ satisfies π/2 radians

公开(公告)号：US10608855B2

公开(公告)日：2020-03-31

申请号：US16599404

申请日：2019-10-11

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04L27/26 ,  H04B7/0413 ,  H04B7/06 ,  H04L27/34 ,  H04L27/36 ,  H04B7/08 ,  H04L27/38 ,  H04L1/00

Abstract: A transmission method includes mapping processing, phase change processing, and transmission processing. In the mapping processing, a plurality of first modulation signals and a plurality of second modulation signals are generated using a first mapping scheme, and a plurality of third modulation signals and a plurality of fourth modulation signals are generated using a second mapping scheme. In the phase change processing, a phase change is performed on the plurality of second modulation signals and the plurality of fourth modulation signals using all N kinds of phases. In the transmission processing, the first modulation signals and the second modulation signals are respectively transmitted at a same frequency and a same time from different antennas, and the third modulation signals and the fourth modulation signals are respectively transmitted at a same frequency and a same time from the different antennas.

公开(公告)号：US10560224B2

公开(公告)日：2020-02-11

申请号：US15447296

申请日：2017-03-02

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami

IPC: H04L1/08 ,  H04L1/00 ,  H04L1/18 ,  G06F11/10 ,  H04L1/16

Abstract: Provided is a transmission method executed by a transmitting apparatus to transmit a content to a plurality of terminals. The content having transmission count information indicating a number of times the content is to be transmitted by the transmitting apparatus. The transmission method including a first transmission step of generating and transmitting a first transmission signal which transfers at least a first portion of a plurality of data packets including a plurality of content packets, storing data of the content therein, and a plurality of parity packets, generated from the content packets, and a second transmission step of, when the transmission count information of the content indicates a plurality of times, generating a second transmission signal including at least a second portion of the plurality of data packets, and transmitting the second transmission signal during a period which differs from a period during which the first transmission signal is transmitted.

公开(公告)号：US10454637B2

公开(公告)日：2019-10-22

申请号：US15735789

申请日：2016-05-27

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Yoshio Urabe ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04L12/801 ,  H04L5/14 ,  H04L5/00 ,  H04J1/02 ,  H04J3/02 ,  H04L27/26 ,  H04L1/00 ,  H04J11/00

Abstract: A transmitting method includes: configuring a frame using a plurality of orthogonal frequency-division multiplexing (OFDM) symbols, by allocating time resources and frequency resources to a plurality of transmission data; and transmitting the frame, wherein the frame includes a first period in which a preamble which includes information on a frame configuration of the frame is transmitted, and a second period in which the plurality of transmission data are transmitted by at least one of time division and frequency division, and among the plurality of OFDM symbols, OFDM symbols included in the second period include pilot symbols arranged along a time axis with a predetermined spacing therebetween, and a predetermined number of data symbols.

公开(公告)号：US10355765B2

公开(公告)日：2019-07-16

申请号：US16203249

申请日：2018-11-28

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04B7/06 ,  H04B7/0456 ,  H04L27/26 ,  H04L27/00 ,  H04B1/707

Abstract: A transmission apparatus includes M signal processors that respectively generate modulated signals directed to M reception apparatuses, M being an integer equal to or greater than 2, and an antenna section. Each signal processor modulates a first bit sequence made up of two bits to generate a first modulated signal and a second modulated signal, and modulates a second bit sequence made up of other two bits to generate a third modulated signal and a fourth modulated signal, in a case of transmitting multiple streams to a corresponding one of the M reception apparatuses. The antenna section includes a first antenna that transmits the first modulated signal and the third modulated signal and a second antenna that transmits the second modulated signal and the fourth modulated signal. At least either the signals transmitted from the first antenna or the signals transmitted from the second antenna are phase-changed signals.

公开(公告)号：US20190199495A1

公开(公告)日：2019-06-27

申请号：US16287696

申请日：2019-02-27

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka

IPC: H04L5/00 ,  H04B7/06 ,  H04L27/26 ,  H04L27/04 ,  H04L27/06 ,  H04L27/12 ,  H04L27/14 ,  H04L25/02 ,  H04W52/52 ,  H04L27/18 ,  H04L29/06 ,  H04L1/06

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/082 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/003 ,  H04L25/0204 ,  H04L25/0206 ,  H04L27/04 ,  H04L27/06 ,  H04L27/12 ,  H04L27/14 ,  H04L27/18 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2627 ,  H04L27/2649 ,  H04L27/2657 ,  H04L27/2659 ,  H04L27/2691 ,  H04L27/2695 ,  H04L69/22 ,  H04W52/52 ,  H04W72/0453

Abstract: A transmission apparatus includes a plurality of orthogonal frequency division multiplexing (OFDM) modulation signal generators, which generate a first OFDM modulation signal and a second OFDM modulation signal. The transmission apparatus also includes a transmitter that transmits the first OFDM modulation signal from a first antenna and the second OFDM modulation signal from a second antenna, in an identical frequency band. A reception apparatus is provided, which includes a plurality of antennas that receive a plurality of OFDM modulation signals; a plurality of OFDM demodulators that transform the plurality of OFDM modulation signals to a plurality of reception signals using Fourier transform; an estimator that outputs a distortion estimation signal using one or more symbols for demodulation included in the plurality of reception signals; and a demodulator that compensates for distortion of the reception signals using the distortion estimation signal and demodulates a data symbol included in the reception signals.

公开(公告)号：US10291351B2

公开(公告)日：2019-05-14

申请号：US16034783

申请日：2018-07-13

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H03M13/00 ,  H04L1/00 ,  H04L27/34 ,  H03M13/25 ,  H03M13/11 ,  H04B7/0413 ,  H04L27/18

Abstract: In a transmission method according to one aspect of the present disclosure, a encoder performs error correction coding on an information bit string to generate a code word. A mapper modulates a first bit string in which the number of bits is the predetermined integral multiple of (X+Y) in the code word using a first scheme, the first scheme being a set of a modulation scheme in which an X-bit bit string is mapped to generate a first complex signal and a modulation scheme in which a Y-bit bit string is mapped to generate a second complex signal, and modulates a second bit string in which the first bit string is removed from the code word using a second scheme different from the first scheme.