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公开(公告)号：US20230283993A1
公开(公告)日：2023-09-07
申请号：US18197326
申请日：2023-05-15
Inventor： Yutaka MURAKAMI
CPC classification number: H04W4/06 , H04B7/1851 , H04W28/14 , H04W84/06
Abstract: A controller, which is a communication device, includes: a transfer unit including a function of transferring data received from a first terminal to another communication device via wireless communication; and a determination unit configured to determine whether first information is included in the data received by the transfer unit, the first information indicating that the data is to be multicast. The transfer unit is further configured to multicast the data to a second terminal when the determination unit determines that the first information is included in the data, the second terminal and the first terminal being different terminals.
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公开(公告)号：US20230275692A1
公开(公告)日：2023-08-31
申请号：US18142720
申请日：2023-05-03
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
CPC classification number: H04L1/0041 , H04L27/34 , H03M13/255 , H04L1/0057 , H04L1/0071 , H04L1/0643 , H04L1/0045 , H03M13/1165
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.
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公开(公告)号：US20230261730A1
公开(公告)日：2023-08-17
申请号：US18140980
申请日：2023-04-28
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
IPC: H04B7/10 , H04B7/0408 , H04B7/0452 , H04B7/06 , H04B7/08
CPC classification number: H04B7/10 , H04B7/0408 , H04B7/0452 , H04B7/0617 , H04B7/063 , H04B7/0684 , H04B7/0882
Abstract: Provided is a transmitting device which can expand a communication range when performing multicast/broadcast communication. The transmitting device includes a plurality of transmission antennas, and includes: a signal processor which generates a first baseband signal by modulating data of a first stream, and a second baseband signal by modulating data of a second stream; and a transmitter which generates, from the first baseband signal, first transmission signals having different directivities, generates, from the second baseband signal, second transmission signals having different directivities, and transmits the first transmission signals and the second transmission signals at a same time. When the transmitter has received, from a terminal, a request to transmit the first stream, the transmitter further generates, from the first baseband signal, third transmission signals which are different from the first transmission signals and have different directivities, and transmits the third transmission signals.
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公开(公告)号：US20230163817A1
公开(公告)日：2023-05-25
申请号：US18097644
申请日：2023-01-17
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI , Hiroyuki MOTOZUKA
IPC: H04B7/0456 , H04B7/0413 , H04B7/06 , H04B7/0417
CPC classification number: H04B7/0456 , H04B7/0413 , H04B7/0615 , H04B7/0417
Abstract: A transmission device includes: a weighting synthesizer that generates a first precoded signal and a second precoded signal; a first pilot inserter that inserts a pilot signal into the 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 phase-changed second precoded signal; and a phase changer that applies a phase change to the phase-changed and pilot-signal-inserted second precoded signal. Δλ satisfies π/2 radians
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公开(公告)号：US20230160996A1
公开(公告)日：2023-05-25
申请号：US17919729
申请日：2021-02-09
Inventor： Yutaka MURAKAMI
Abstract: A communication device according to the present invention comprising: a transmission unit that transmits request information requesting sensing of a target; a reception unit that receives result information indicating a sensing result, from a first communication device that has sensed the target according to the request information; and a control unit that determines a state of the target on the basis of the sensing result indicated in the result information and a sensing result of the target that has been sensed by the communicate on device.
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Patent Agency Ranking
16.发明公开公开(公告)号：US20230142456A1
公开(公告)日：2023-05-11
申请号：US18093005
申请日：2023-01-04
Inventor： Yutaka MURAKAMI
IPC: H04B10/116 , H04W84/12 , H04W48/16 , H04W76/11 , H04W48/08
CPC classification number: H04B10/116 , H04W84/12 , H04W48/16 , H04W76/11 , H04W48/08 , H04B10/1141
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：US20230050434A1
公开(公告)日：2023-02-16
申请号：US17965873
申请日：2022-10-14
Inventor： Yutaka MURAKAMI , Yoshio URABE , Tomohiro KIMURA , Mikihiro OUCHI
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.
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公开(公告)号：US20230048520A1
公开(公告)日：2023-02-16
申请号：US17973828
申请日：2022-10-26
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
Abstract: An indicator in a master AP from among a plurality of APs obtains communication quality of communication with an AP which is a communication partner. In the case where the obtained communication quality is less than a threshold, the indicator causes the plurality of APs including the master AP to perform cooperative operation to transmit data. In the case where the obtained communication quality is not less than the threshold, the indicator causes the plurality of APs including the master AP to stop the cooperative operation.
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公开(公告)号：US20230006696A1
公开(公告)日：2023-01-05
申请号：US17878660
申请日：2022-08-01
Inventor： Yutaka MURAKAMI
Abstract: A decoding apparatus includes input circuitry configured to receive coded data; and decoding circuitry configured to decode the coded data to obtain decoded data. The coded data are generated by using an encoding process at an encoding apparatus. The encoding process includes: (i) repeatedly collecting first data blocks included in the decoded data to generate at least one second data block; (ii) dividing at least one third data block included in the decoded data into fourth data blocks; (iii) allocating fifth data blocks included in the decoded data to respective sixth data blocks without collecting the first data blocks or dividing the at least one third data block; and (iv) performing an error correcting encoding on the at least one second data block, the fourth data blocks, and the sixth data blocks in accordance with a coding rate selected from a plurality of coding rates to generate parity data.
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公开(公告)号：US20220377792A1
公开(公告)日：2022-11-24
申请号：US17771789
申请日：2020-08-31
Inventor： Yutaka MURAKAMI
IPC: H04W74/08
Abstract: This communication device has: a reception unit that receives a beacon signal through a first channel; a control unit that generates a sensing signal on the basis of information included in an extended area of the beacon signal; and a transmission unit that transmits the sensing signal through a second channel.
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