公开(公告)号：US20210258739A1

公开(公告)日：2021-08-19

申请号：US16973546

申请日：2019-05-28

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka MURAKAMI

IPC: H04W4/06 ,  H04W72/04

Abstract: Provided is a transmission device, and with respect thereto, a first communication device and a second communication device have different relative speeds. The transmission device generates a first signal destined for the first communication device and a second signal destined for the second communication device. In a first period, the transmission device transmits the first signal using a first frequency region and transmits the second signal using a second frequency region.

公开(公告)号：US20210152220A1

公开(公告)日：2021-05-20

申请号：US17161163

申请日：2021-01-28

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka MURAKAMI

IPC: H04B7/0413 ,  H04W84/12 ,  H04B7/06 ,  H04B7/08 ,  H04L5/00

Abstract: In a communication system that includes an access point, a repeater #1, and a repeater #2 and wirelessly communicates with a terminal, the access point wirelessly communicates with the repeater #1 on at least a first channel included in a first frequency band and wirelessly communicates with the repeater #2 on at least a second channel included in a second frequency band different than the first frequency band, the repeater #1 wirelessly communicates with the terminal on at least a third channel included in the second frequency band, and the repeater #2 wirelessly communicates with the terminal on at least a fourth channel included in the first frequency band.

公开(公告)号：US20210120587A1

公开(公告)日：2021-04-22

申请号：US17136696

申请日：2020-12-29

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka MURAKAMI ,  Nobuhiko HASHIDA

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04W80/02

Abstract: An access point includes a first interface that wirelessly communicates using a first band; a second interface that wirelessly communicates using a second band; and a controller that selects one type of request to send (RTS)/clear to send (CTS) control from among three mutually different types using at least one of the first interface and the second interface, and carries out the selected one type of RTS/CTS control with a terminal.

公开(公告)号：US20210111766A1

公开(公告)日：2021-04-15

申请号：US17130792

申请日：2020-12-22

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka MURAKAMI

IPC: H04B7/0413 ,  H04B7/06 ,  H04B7/08 ,  H04L5/00 ,  H04W84/12

Abstract: In a communication system that includes an access point, a repeater #1, and a repeater #2 and wirelessly communicates with a terminal, the access point wirelessly communicates with the repeater #1 on at least a first channel included in a first frequency band and wirelessly communicates with the repeater #2 on at least a second channel included in a second frequency band different than the first frequency band, the repeater #1 wirelessly communicates with the terminal on at least a third channel included in the second frequency band, and the repeater #2 wirelessly communicates with the terminal on at least a fourth channel included in the first frequency band.

公开(公告)号：US20210075655A1

公开(公告)日：2021-03-11

申请号：US16952777

申请日：2020-11-19

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：US20200266930A1

公开(公告)日：2020-08-20

申请号：US16859731

申请日：2020-04-27

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka MURAKAMI ,  Shutai OKAMURA ,  Kiyotaka KOBAYASHI ,  Masayuki ORIHASHI ,  Kazuaki TAKAHASHI

IPC: H04L1/00 ,  H04L27/38 ,  H04L27/36 ,  H03M13/15 ,  H04L27/00 ,  H04L5/00 ,  H04L1/22

Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.

公开(公告)号：US20200252103A1

公开(公告)日：2020-08-06

申请号：US16856710

申请日：2020-04-23

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka MURAKAMI ,  Nobuhiko HASHIDA

IPC: H04B3/54 ,  H04L29/06 ,  H02J7/00 ,  H02J7/02 ,  H02J50/10 ,  H02J50/80 ,  B60L53/30 ,  B60L53/12 ,  B60L53/66

Abstract: A communication system includes one or more chargers and a server capable of communicating with the one or more chargers. The server obtains first information from a first vehicle via a first charger included in the one or more chargers, during charging of the first vehicle by the first charger, and supplies second information based on the first information to a second vehicle via a second charger included in the one or more chargers, during charging of the second vehicle by the second charger.

公开(公告)号：US20200244508A1

公开(公告)日：2020-07-30

申请号：US16848057

申请日：2020-04-14

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC: H04L27/36 ,  H04L27/18 ,  H04L27/38 ,  H04L27/34 ,  H04L27/00 ,  H04L27/20 ,  H04L27/04 ,  H04L5/00

Abstract: Provided is a transmission method that improves data reception quality in radio transmission using a single-carrier scheme and/or a multi-carrier scheme. The transmission method includes: generating a plurality of first modulated signals s1(i) and second modulated signals s2(i) from transmission data, the plurality of first modulated signals s1(i) being signals generated using a QPSK modulation scheme, and the plurality of second modulated signals s2(i) being signals generated using 16QAM modulation; generating, from the plurality of first modulated signals s1(i) and the plurality of second modulated signals s2(i), a plurality of first signal-processed signals z1(i) and a plurality of second signal-processed signals z2(i) which satisfy a predetermined equation; and transmitting the plurality of first signal-processed signals z1(i) and the plurality of second signal-processed signals z2(i) using a plurality of antennas. A first signal-processed signal and a second signal-processed signal having identical symbol numbers are simultaneously transmitted at the same frequency.

公开(公告)号：US20200059387A1

公开(公告)日：2020-02-20

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 ,  H04B7/0456 ,  H04L5/00 ,  H04B7/0408 ,  H04B17/318 ,  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：US20200044902A1

公开(公告)日：2020-02-06

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 ,  H04L27/38 ,  H04L27/36 ,  H04B7/08

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.