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公开(公告)号：US11742912B2
公开(公告)日：2023-08-29
申请号：US17551505
申请日：2021-12-15
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
IPC: H04B7/06 , H04B7/04 , H04J11/00 , H04L27/26 , H04B7/0417
CPC classification number: H04B7/06 , H04B7/04 , H04B7/0421 , H04B7/0615 , H04B7/0671 , H04J11/00 , H04L27/2613 , H04L27/26134
Abstract: A transmission method includes generating a first precoded signal and a second precoded signal by performing a precoding process on a first baseband signal and a second baseband signal, outputting a third signal by inserting a pilot signal into the first precoded signal, outputting a fourth signal by applying a first phase change to the second precoded signal, outputting a fifth signal by inserting a pilot signal into the fourth signal, and outputting a sixth signal by applying a second phase change to the fifth signal.
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公开(公告)号：US11742903B2
公开(公告)日：2023-08-29
申请号：US17559923
申请日：2021-12-22
Inventor： Yutaka Murakami
IPC: H04B7/04 , H04B7/0452 , H04J3/00 , H04B7/06 , H04B7/08 , H04J11/00 , H04L27/26 , H04W72/0446
CPC classification number: H04B7/0452 , H04B7/04 , H04B7/0617 , H04B7/086 , H04J3/00 , H04J11/00 , H04J11/003 , H04L27/262 , H04L27/2662 , H04L27/2675 , H04L27/2692 , H04L27/2626 , H04W72/0446
Abstract: A communication apparatus includes a receiver and a decoder. The receiver includes a plurality of antenna elements and, in operation, receives from a base station apparatus a modulated signal mapped to one of a plurality of subframes defined in a frame corresponding to a communicable range to which the communication apparatus belongs. The plurality of subframes are defined by time-division, frequency-division, or time-and-frequency division of the frame. A maximum number of modulated signals that can be simultaneously transmitted in a subframe from the base station apparatus varies depending on the communicable range. The decoder, in operation, decodes the received modulated signal.
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公开(公告)号：US11716182B2
公开(公告)日：2023-08-01
申请号：US17171094
申请日：2021-02-09
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi , Hiroyuki Motozuka
IPC: H04L5/00 , H04B7/0456 , H04B7/06
CPC classification number: H04L5/0048 , H04B7/0456 , H04B7/0671
Abstract: A transmission device that improves data reception quality includes: a first pilot inserter that inserts a pilot signal into a first precoded signal; a phase changer that applies a phase change of i×Δλ to the second precoded signal, where i is a symbol number and an integer that is greater than or equal to 0; 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
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公开(公告)号：US11716143B2
公开(公告)日：2023-08-01
申请号：US17834738
申请日：2022-06-07
Inventor： Yutaka Murakami
IPC: H04B10/116 , H04W4/40 , H04B10/114 , H04W64/00
CPC classification number: H04B10/116 , H04B10/1149 , H04W4/40 , H04W64/003
Abstract: Useful data is transmitted to a terminal existing in a transportation vehicle. A communication apparatus installed in the transportation vehicle and configured to transmit the data to the terminal existing in the transportation vehicle includes a data selection unit and an illumination unit. The data selection unit acquires location information indicating a location of the transportation vehicle in which the terminal exists and which is traveling. Based on the acquired location information, the data selection unit selects approaching-location data related to a location ahead of a current location of the transportation vehicle in a traveling direction from a plurality of pieces of data related to the location. The illumination unit transmits, as a modulated light signal, a signal comprising the approaching-location data.
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公开(公告)号：US11711122B2
公开(公告)日：2023-07-25
申请号：US17537057
申请日：2021-11-29
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
CPC classification number: H04B7/0456 , H04L5/00 , G06F17/16 , H04W72/21 , H04W72/23
Abstract: A precoding process is performed on a first baseband signal and a second baseband signal to generate a first precoding signal and a second precoding signal. A pilot signal is inserted into the first precoding signal and phase change is performed on the second precoding signal. A pilot signal is inserted into the phase changed second precoding signal, and phase change is further performed on the phase-changed second precoding signal with the pilot signal inserted.
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Patent Agency Ranking
公开(公告)号：US11683069B2
公开(公告)日：2023-06-20
申请号：US17711321
申请日：2022-04-01
Inventor： Yutaka Murakami , Nobuhiko Hashida
IPC: H04B3/54 , H02J50/80 , H02J50/10 , B60L53/12 , B60L53/66 , B60L53/30 , H02J7/00 , H02J7/02 , H04L67/01
CPC classification number: H04B3/54 , B60L53/12 , B60L53/305 , B60L53/66 , H02J7/00032 , H02J7/0042 , H02J7/02 , H02J50/10 , H02J50/80 , H04L67/01
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.
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公开(公告)号：US11671201B2
公开(公告)日：2023-06-06
申请号：US17399213
申请日：2021-08-11
Inventor： Yutaka Murakami
IPC: H04L1/08 , H04L1/00 , H04L1/1812 , H04L1/1825 , H04L1/1829 , H04L1/1867 , G06F11/10 , H04L1/1607
CPC classification number: H04L1/08 , G06F11/10 , H04L1/0041 , H04L1/0057 , H04L1/0061 , H04L1/0068 , H04L1/0071 , H04L1/1607 , H04L1/1819 , H04L1/1825 , H04L1/1845 , H04L1/1887 , H04L2001/0093 , H04L2001/0097
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.
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公开(公告)号：US11575435B2
公开(公告)日：2023-02-07
申请号：US17362017
申请日：2021-06-29
Inventor： Yutaka Murakami
IPC: H04B10/116 , H04W84/12 , H04W48/16 , H04W76/11 , H04W48/08 , H04B10/114 , H04L9/40
Abstract: Provided is a device, which is a transmission device that can improve performance, that includes: a light source; and a transmitter that generates a modulated signal based on an input signal and transmits the modulated signal from the light source as visible light by changing a luminance of the light source in accordance with the modulated signal. The transmitter includes, in the modulated signal, a plurality of items of information related to service set identifiers (SSIDs) of a plurality of mutually different access points in a wireless local area network (LAN), and transmits the modulated signal from the light source.
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公开(公告)号：US11497083B2
公开(公告)日：2022-11-08
申请号：US16983623
申请日：2020-08-03
Inventor： Yutaka Murakami , Nobuhiko Hashida
Abstract: A communication system includes an outdoor gateway and an indoor gateway. The outdoor gateway includes: a communication IF that connects to an outdoor network; and a communication IF that communicates wirelessly. The indoor gateway includes: a communication IF that connects to an indoor network; and a communication IF that connects, via wireless communication, to the communication IF included in the outdoor gateway.
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公开(公告)号：US11489561B2
公开(公告)日：2022-11-01
申请号：US17317311
申请日：2021-05-11
Inventor： Tomohiro Kimura , Yutaka Murakami , Mikihiro Ouchi
IPC: H04B1/16 , H04B7/0413 , H04W4/06 , H04W16/26 , H04W16/28 , H04W76/40 , H04B7/0404 , H04B7/06 , H04B7/08 , H04N21/2365 , H04N21/426 , H04B7/10
Abstract: By a transmission method according to one aspect of the present disclosure, in a broadcasting system that generates a first broadcasting signal and a second broadcasting signal by performing multi-antenna encoding on program data, and wirelessly transmits a first broadcasting signal and a second broadcasting signal, a first transmit station transmits the first broadcasting signal, a second transmit station transmits the second broadcasting signal, the first transmit station and the second transmit station transmit the first broadcasting signal and the second broadcasting signal to an overlapping area at an identical time using an overlapping frequency band, polarized wave transmitted from the first transmit station differs from polarized wave transmitted from the second transmit station, and arrangement of the first transmit station differs from arrangement of the second transmit station.
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