Patents by Inventor Katsuhiko Hiramatsu
Katsuhiko Hiramatsu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11943757Abstract: In a wireless communication base station device, a modulation unit carries out modulation processing for Dch data after coding to generate a Dch data symbol. A modulation unit carries out modulation processing for Lch data after coding to generate an Lch data symbol. An allocation unit allocates the Dch data symbol and Lch data symbol to each sub-carrier composing an OFDM symbol and outputs the allocated sub-carrier to a multiplex unit. In this case, the allocation unit allocates the Dch data symbol to a plurality of resource blocks where one Dch is arranged at an interval equal to integral multiples of the number of resource blocks composing a resource block group.Type: GrantFiled: December 15, 2022Date of Patent: March 26, 2024Assignee: Panasonic Holdings CorporationInventors: Akihiko Nishio, Christian Wengerter, Hidetoshi Suzuki, Katsuhiko Hiramatsu
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Publication number: 20240089065Abstract: Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit (201) which generates an SRS (Sounding Reference Signal) for measuring uplink line data channel quality; an SRS arrangement unit (202) which frequency-multiplexes the SRS on the SR transmission band and arranges it; and an SRS arrangement control unit (208) which controls SRS frequency multiplex so as to be uniform in frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of the reference signal transmission bandwidth according to the SRS arrangement information transmitted from the base station and furthermore controls the transmission interval of the frequency-multiplexed SRS.Type: ApplicationFiled: November 14, 2023Publication date: March 14, 2024Inventors: Atsushi MATSUMOTO, Daichi IMAMURA, Takashi IWAI, Yoshihiko OGAWA, Tomofumi TAKATA, Katsuhiko HIRAMATSU
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Patent number: 11924133Abstract: Provided is a radio communication device which can separate propagation paths of antenna ports and improve a channel estimation accuracy even when using virtual antennas. The device includes: a mapping unit which maps a data signal after modulation to a virtual antenna and a virtual antenna; a phase inversion unit which inverts the phase of S0 transmitted from an antenna port in synchronization with a phase inversion unit between the odd-number slot and the even-number slot; the phase inversion unit which inverts the phase of R0 transmitted from the antenna port; a phase inversion unit which inverts the phase of S1 transmitted from an antenna port in synchronization with a phase inversion unit; and the phase inversion unit which inverts the phase of R1 transmitted from an antenna port.Type: GrantFiled: March 24, 2023Date of Patent: March 5, 2024Assignee: Sun Patent TrustInventors: Seigo Nakao, Masayuki Hoshino, Atsushi Sumasu, Katsuhiko Hiramatsu
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Patent number: 11923965Abstract: A radio communication device capable of randomizing both inter-cell interference and intra-cell interference. In this device, a spreading section primarily spreads a response signal in a ZAC sequence set by a control unit. A spreading section secondarily spreads the primarily spread response signal in a block-wise spreading code sequence set by the control unit. The control unit controls the cyclic shift amount of the ZAC sequence used for the primary spreading in the spreading section and the block-wise spreading code sequence used for the secondary spreading in the spreading section according to a set hopping pattern. The hopping pattern set by the control unit is made up of two hierarchies. An LB-based hopping pattern different for each cell is defined in the first hierarchy in order to randomize the inter-cell interference. A hopping pattern different for each mobile station is defined in the second hierarchy to randomize the intra-cell interference.Type: GrantFiled: November 7, 2022Date of Patent: March 5, 2024Assignee: Panasonic Holdings CorporationInventors: Seigo Nakao, Daichi Imamura, Katsuhiko Hiramatsu
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Patent number: 11901929Abstract: Provided is a wireless communication apparatus wherein channel estimation accuracy is improved while keeping the position of each bit in a frame, even when a modulation system having a large modulation multiple value is used for a data symbol. In the wireless communication apparatus, an encoding section encodes and outputs transmitting data to a bit converting section, and the bit converting section converts at least one bit of a plurality of bits constituting a data symbol to be used for channel estimation, among the encoded bit strings, into ‘1’ or ‘0’ and outputs it to a modulating section. The modulating section modulates the bit string inputted from the bit converting section by using a single modulation mapper and a plurality of data symbols are generated.Type: GrantFiled: September 6, 2022Date of Patent: February 13, 2024Assignee: Panasonic Holdings CorporationInventors: Kenichi Miyoshi, Hidetoshi Suzuki, Katsuhiko Hiramatsu, Christian Wengerter, Alexander Golitschek Edler Von Elbwart
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Patent number: 11863496Abstract: Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit (201) which generates an SRS (Sounding Reference Signal) for measuring uplink line data channel quality; an SRS arrangement unit (202) which frequency-multiplexes the SRS on the SR transmission band and arranges it; and an SRS arrangement control unit (208) which controls SRS frequency multiplex so as to be uniform in frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of the reference signal transmission bandwidth according to the SRS arrangement information transmitted from the base station and furthermore controls the transmission interval of the frequency-multiplexed SRS.Type: GrantFiled: April 25, 2022Date of Patent: January 2, 2024Assignee: Panasonic Holdings CorporationInventors: Atsushi Matsumoto, Daichi Imamura, Takashi Iwai, Yoshihiko Ogawa, Tomofumi Takata, Katsuhiko Hiramatsu
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Publication number: 20230354287Abstract: In a wireless communication base station device, a modulation unit carries out modulation processing for Dch data after coding to generate a Dch data symbol. A modulation unit carries out modulation processing for Lch data after coding to generate an Lch data symbol. An allocation unit allocates the Dch data symbol and Lch data symbol to each sub-carrier composing an OFDM symbol and outputs the allocated sub-carrier to a multiplex unit. In this case, the allocation unit allocates the Dch data symbol to a plurality of resource blocks where one Dch is arranged at an interval equal to integral multiples of the number of resource blocks composing a resource block group.Type: ApplicationFiled: June 30, 2023Publication date: November 2, 2023Inventors: Akihiko Nishio, Christian Wengerter, Hidetoshi Suzuki, Katsuhiko Hiramatsu
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Publication number: 20230343471Abstract: A proposal system includes an obtainer that obtains user information regarding a user who uses an indoor space; and a proposal unit that proposes a condition of use of the indoor space depending on the user information obtained. The proposal unit calculates an infection probability in transmission of an infectious material to the user based on a total number of users of the indoor space and a period of use of the indoor space which are included in the user information. When the infection probability calculated exceeds an upper infection probability limit, the proposal unit proposes the condition of use under which the infection probability falls below the upper infection probability limit.Type: ApplicationFiled: August 11, 2021Publication date: October 26, 2023Inventor: Katsuhiko HIRAMATSU
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Publication number: 20230277709Abstract: This control system includes a ventilation device which performs exchange between gas inside a room including an infectious object and gas outside the room, to discharge and remove the infectious object; a supply device which supplies an inactivating substance, for inactivating the infectious object, to inside the room to inactivate and remove the infectious object; and a control device which controls the ventilation device and the supply device. The control device switches between a first mode and a second mode which is different from the first mode. The first mode is for performing at least one of a first operation whereby, on the occasion of increasing the removal capability of one of the ventilation device and the supply device, the removal capability of the other is decreased, and a second operation whereby, on the occasion of decreasing the removal efficiency of one of the ventilation device and the supply device, the removal efficiency of the other is increased.Type: ApplicationFiled: August 11, 2021Publication date: September 7, 2023Inventor: Katsuhiko HIRAMATSU
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Publication number: 20230231676Abstract: Provided is a radio communication device which can separate propagation paths of antenna ports and improve a channel estimation accuracy even when using virtual antennas. The device includes: a mapping unit which maps a data signal after modulation to a virtual antenna and a virtual antenna; a phase inversion unit which inverts the phase of S0 transmitted from an antenna port in synchronization with a phase inversion unit between the odd-number slot and the even-number slot; the phase inversion unit which inverts the phase of R0 transmitted from the antenna port; a phase inversion unit which inverts the phase of S1 transmitted from an antenna port in synchronization with a phase inversion unit; and the phase inversion unit which inverts the phase of R1 transmitted from an antenna port.Type: ApplicationFiled: March 24, 2023Publication date: July 20, 2023Inventors: Seigo Nakao, Masayuki Hoshino, Atsushi Sumasu, Katsuhiko Hiramatsu
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Patent number: 11646842Abstract: Provided is a radio communication device which can separate propagation paths of antenna ports and improve a channel estimation accuracy even when using virtual antennas. The device includes: a mapping unit which maps a data signal after modulation to a virtual antenna and a virtual antenna; a phase inversion unit which inverts the phase of S0 transmitted from an antenna port in synchronization with a phase inversion unit between the odd-number slot and the even-number slot; the phase inversion unit which inverts the phase of R0 transmitted from the antenna port; a phase inversion unit which inverts the phase of S1 transmitted from an antenna port in synchronization with a phase inversion unit; and the phase inversion unit which inverts the phase of R1 transmitted from an antenna port.Type: GrantFiled: March 5, 2021Date of Patent: May 9, 2023Assignee: Sun Patent TrustInventors: Seigo Nakao, Masayuki Hoshino, Atsushi Sumasu, Katsuhiko Hiramatsu
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Publication number: 20230121741Abstract: In a wireless communication base station device, a modulation unit carries out modulation processing for Dch data after coding to generate a Dch data symbol. A modulation unit carries out modulation processing for Lch data after coding to generate an Lch data symbol. An allocation unit allocates the Dch data symbol and Lch data symbol to each sub-carrier composing an OFDM symbol and outputs the allocated sub-carrier to a multiplex unit. In this case, the allocation unit allocates the Dch data symbol to a plurality of resource blocks where one Dch is arranged at an interval equal to integral multiples of the number of resource blocks composing a resource block group.Type: ApplicationFiled: December 15, 2022Publication date: April 20, 2023Inventors: Akihiko Nishio, Christian Wengerter, Hidetoshi Suzuki, Katsuhiko Hiramatsu
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Publication number: 20230085207Abstract: A radio communication device capable of randomizing both inter-cell interference and intra-cell interference. In this device, a spreading section primarily spreads a response signal in a ZAC sequence set by a control unit. A spreading section secondarily spreads the primarily spread response signal in a block-wise spreading code sequence set by the control unit. The control unit controls the cyclic shift amount of the ZAC sequence used for the primary spreading in the spreading section and the block-wise spreading code sequence used for the secondary spreading in the spreading section according to a set hopping pattern. The hopping pattern set by the control unit is made up of two hierarchies. An LB-based hopping pattern different for each cell is defined in the first hierarchy in order to randomize the inter-cell interference. A hopping pattern different for each mobile station is defined in the second hierarchy to randomize the intra-cell interference.Type: ApplicationFiled: November 7, 2022Publication date: March 16, 2023Inventors: Seigo NAKAO, Daichi IMAMURA, Katsuhiko HIRAMATSU
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Patent number: 11564225Abstract: In a wireless communication base station device, a modulation unit carries out modulation processing for Dch data after coding to generate a Dch data symbol. A modulation unit carries out modulation processing for Lch data after coding to generate an Lch data symbol. An allocation unit allocates the Dch data symbol and Lch data symbol to each sub-carrier composing an OFDM symbol and outputs the allocated sub-carrier to a multiplex unit. In this case, the allocation unit allocates the Dch data symbol to a plurality of resource blocks where one Dch is arranged at an interval equal to integral multiples of the number of resource blocks composing a resource block group.Type: GrantFiled: January 7, 2022Date of Patent: January 24, 2023Assignee: Panasonic Holdings CorporationInventors: Akihiko Nishio, Christian Wengerter, Hidetoshi Suzuki, Katsuhiko Hiramatsu
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Publication number: 20230014403Abstract: A radio terminal in a radio communication system receives a physical downlink control signal comprising a control field and a new data indicator (NDI) field and determines that a value of the NDI field is one of a first value and a second value. A physical uplink shared channel signal is generated according to both a specific transport format and a specific redundancy version. The control field is used to determine the specific transport format when the NDI field is determined to be the first value, and the control field is used to determine the specific redundancy version when the NDI field is determined to be the second value.Type: ApplicationFiled: September 20, 2022Publication date: January 19, 2023Inventors: Christian Wengerter, Akihiko Nishio, Hidetoshi Suzuki, Joachim Löhr, Katsuhiko Hiramatsu
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Publication number: 20230006707Abstract: Provided is a wireless communication apparatus wherein channel estimation accuracy is improved while keeping the position of each bit in a frame, even when a modulation system having a large modulation multiple value is used for a data symbol. In the wireless communication apparatus, an encoding section encodes and outputs transmitting data to a bit converting section, and the bit converting section converts at least one bit of a plurality of bits constituting a data symbol to be used for channel estimation, among the encoded bit strings, into ‘1’ or ‘0’ and outputs it to a modulating section. The modulating section modulates the bit string inputted from the bit converting section by using a single modulation mapper and a plurality of data symbols are generated.Type: ApplicationFiled: September 6, 2022Publication date: January 5, 2023Inventors: Kenichi MIYOSHI, Hidetoshi SUZUKI, Katsuhiko HIRAMATSU, Christian WENGERTER, Alexander GOLITSCHEK EDLER VON ELBWART
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Patent number: 11522628Abstract: A radio communication device capable of randomizing both inter-cell interference and intra-cell interference. In this device, a spreading section primarily spreads a response signal in a ZAC sequence set by a control unit. A spreading section secondarily spreads the primarily spread response signal in a block-wise spreading code sequence set by the control unit. The control unit controls the cyclic shift amount of the ZAC sequence used for the primary spreading in the spreading section and the block-wise spreading code sequence used for the secondary spreading in the spreading section according to a set hopping pattern. The hopping pattern set by the control unit is made up of two hierarchies. An LB-based hopping pattern different for each cell is defined in the first hierarchy in order to randomize the inter-cell interference. A hopping pattern different for each mobile station is defined in the second hierarchy to randomize the intra-cell interference.Type: GrantFiled: September 25, 2020Date of Patent: December 6, 2022Assignee: Panasonic Holdings CorporationInventors: Seigo Nakao, Daichi Imamura, Katsuhiko Hiramatsu
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Publication number: 20220376875Abstract: It is possible to improve the CQI reception performance even when a delay is caused in a propagation path, a transmission timing error is caused, or a residual interference is generated between cyclic shift amounts of different ZC sequences. For the second symbol and the sixth symbol of the ACK/NACK signal which are multiplexed by RS of CQI, (+, +) or (?, ?) is applied to a partial sequence of the Walsh sequence. For RS of CQI transmitted from a mobile station, + is added as an RS phase of the second symbol and ? is added as an RS phase of the sixth symbol. A base station (100) receives multiplexed signals of ACK/NACK signals and CQI signals transmitted from a plurality of mobile stations. An RS synthesis unit (119) performs synthesis by aligning the RS phase of CQI.Type: ApplicationFiled: August 4, 2022Publication date: November 24, 2022Inventors: Seigo Nakao, Daichi Imamura, Yoshihiko Ogawa, Atsushi Matsumoto, Katsuhiko Hiramatsu
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Patent number: 11477767Abstract: A radio terminal in a radio communication system receives a physical downlink control signal comprising a control field and a new data indicator (NDI) field and determines that a value of the NDI field is one of a first value and a second value. A physical uplink shared channel signal is generated according to both a specific transport format and a specific redundancy version. The control field is used to determine the specific transport format when the NDI field is determined to be the first value, and the control field is used to determine the specific redundancy version when the NDI field is determined to be the second value.Type: GrantFiled: March 23, 2020Date of Patent: October 18, 2022Assignee: Optis Wireless Technology, LLCInventors: Christian Wengerter, Akihiko Nishio, Hidetoshi Suzuki, Joachim Löhr, Katsuhiko Hiramatsu
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Patent number: 11469786Abstract: Provided is a wireless communication apparatus wherein channel estimation accuracy is improved while keeping the position of each bit in a frame, even when a modulation system having a large modulation multiple value is used for a data symbol. In the wireless communication apparatus, an encoding section encodes and outputs transmitting data to a bit converting section, and the bit converting section converts at least one bit of a plurality of bits constituting a data symbol to be used for channel estimation, among the encoded bit strings, into ‘1’ or ‘0’ and outputs it to a modulating section. The modulating section modulates the bit string inputted from the bit converting section by using a single modulation mapper and a plurality of data symbols are generated.Type: GrantFiled: April 24, 2020Date of Patent: October 11, 2022Assignee: Panasonic Holdings CorporationInventors: Kenichi Miyoshi, Hidetoshi Suzuki, Katsuhiko Hiramatsu, Christian Wengerter, Alexander Golitschek Edler Von Elbwart