Patents by Inventor Yoshihiko Ogawa
Yoshihiko Ogawa 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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Publication number: 20240146434Abstract: Provided are a wireless communication apparatus and a reference signal generating method, wherein inter-cell interference is reduced inside and outside a CoMP set. A CoMP mode setting unit (101) sets whether the terminal (100) thereof is a CoMP terminal or a Non-CoMP terminal. When the terminal (100) is set as a Non-CoMP terminal, the hopping pattern calculating unit (104) calculates a ZC sequence number to be used as the transmission timing, from among all the ZC sequence numbers that can be used within the system. When the terminal (100) is set as a CoMP terminal, the hopping pattern calculating unit (104) calculates a ZC sequence number to be used as the transmission timing, by hopping the ZC sequence numbers to be used within the CoMP set. A ZC sequence generating unit (105) generates a ZC sequence to be used as an SRS, using the calculated ZC sequence number.Type: ApplicationFiled: January 9, 2024Publication date: May 2, 2024Inventors: Takashi IWAI, Daichi IMAMURA, Akihiko NISHIO, Yoshihiko OGAWA, Masaru FUKUOKA
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Patent number: 11973603Abstract: Provided is a base station that performs feedback with regard to data transmission. The base station includes a downlink feedback information (DFI) generation unit and a transmitter. On the basis of a resource allocation configuration that was configured by a terminal, the DFI generation unit determines a transmission method for feedback information that includes a response signal regarding uplink data. The transmitter transmits the feedback information on the basis of the transmission method.Type: GrantFiled: September 11, 2019Date of Patent: April 30, 2024Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Tomoya Nunome, Takashi Iwai, Hidetoshi Suzuki, Ayako Horiuchi, Yoshihiko Ogawa
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Patent number: 11949624Abstract: This invention is directed to a terminal apparatus capable of preventing the degradation of reception quality of control information even in a case of employing SU-MIMO transmission system. A terminal, which uses a plurality of different layers to transmit two code words in which control information is placed, comprises: a resource amount determining unit that determines, based on a lower one of the encoding rates of the two code words or based on the average value of the reciprocals of the encoding rates of the two code words, resource amounts of control information in the respective ones of the plurality of layers; and a transport signal forming unit that places, in the two code words, the control information modulated by use of the resource amounts, thereby forming a transport signal.Type: GrantFiled: November 11, 2022Date of Patent: April 2, 2024Assignee: Sun Patent TrustInventors: Yoshihiko Ogawa, Akihiko Nishio, Seigo Nakao
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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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Publication number: 20240073901Abstract: A terminal with which it is possible to appropriately transmit uplink control information. In a terminal (200), a reception unit (202) receives first control information relating to an uplink data channel, and a second control information relating to an uplink control channel for transmitting uplink control information. The first control information includes first indication information indicating the presence or absence of an uplink data transmission and second indication information indicating the presence or absence a channel state information transmission. A transmission unit (220) transmits uplink control information using the resource of the uplink data channel when the first indication information indicates that there is no uplink data transmission and the second indication information indicates that there is no channel state information transmission.Type: ApplicationFiled: November 7, 2023Publication date: February 29, 2024Inventors: Tetsuya YAMAMOTO, Hidetoshi SUZUKI, Yoshihiko OGAWA
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Patent number: 11909511Abstract: Provided are a wireless communication apparatus and a reference signal generating method, wherein inter-cell interference is reduced inside and outside a CoMP set. A CoMP mode setting unit (101) sets whether the terminal (100) thereof is a CoMP terminal or a Non-CoMP terminal. When the terminal (100) is set as a Non-CoMP terminal, the hopping pattern calculating unit (104) calculates a ZC sequence number to be used as the transmission timing, from among all the ZC sequence numbers that can be used within the system. When the terminal (100) is set as a CoMP terminal, the hopping pattern calculating unit (104) calculates a ZC sequence number to be used as the transmission timing, by hopping the ZC sequence numbers to be used within the CoMP set. A ZC sequence generating unit (105) generates a ZC sequence to be used as an SRS, using the calculated ZC sequence number.Type: GrantFiled: April 26, 2022Date of Patent: February 20, 2024Assignee: SUN PATENT TRUSTInventors: Takashi Iwai, Daichi Imamura, Akihiko Nishio, Yoshihiko Ogawa, Masaru Fukuoka
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Publication number: 20240040519Abstract: A radio communication apparatus is provided, which includes a receiver and a controller. The receiver, in operation, receives a first power headroom (PHR), which is obtained by subtracting a transmit power for a data channel from a maximum transmit power at a mobile station and which is transmitted from the mobile station, and receives a second PHR, which is obtained by subtracting the transmit power for the data channel and a transmit power for a control channel from the maximum transmit power at the mobile station and which is transmitted from the mobile station. The controller, in operation, selectively sets a simultaneous transmission of the data channel and the control channel in different frequency bands to be performed by the mobile station. When the data channel and the control channel are simultaneously transmitted in different frequency bands from the mobile station, the second PHR is obtained and transmitted from the mobile station.Type: ApplicationFiled: October 16, 2023Publication date: February 1, 2024Inventors: Takashi IWAI, Akihiko NISHIO, Daichi IMAMURA, Yoshihiko OGAWA, Atsushi MATSUMOTO
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Patent number: 11888668Abstract: Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit (102) sets a rule for correlating a preamble with an SRS transmission time interval so that the preamble transmission time band and the SRS transmission time band are in the same transmission time band. An SRS transmission band decision unit (103) decides a time interval of a transmission time band which can transmit the SRS according to the preamble transmission time interval inputted from a preamble transmission band decision unit (101) and the correlation rule setting unit (102).Type: GrantFiled: September 7, 2022Date of Patent: January 30, 2024Assignee: Godo Kaisha IP Bridge 1Inventors: Takashi Iwai, Daichi Imamura, Tomofumi Takata, Atsushi Matsumoto, Yoshihiko Ogawa, Sadaki Futagi
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Publication number: 20240030970Abstract: This invention is a transmission device capable of enhancing the reception characteristics of a terminal when employing transmit diversity using two antenna ports in an ePDCCH. In a base station (100) that transmits a reference signal to a terminal (200) using two antenna ports, a setting unit (102), on the basis of the reception quality of the terminal, sets as the aforementioned two antenna ports either a first antenna port pair for which DMRS (reference signals) do not undergo mutual code multiplexing, or a second antenna port pair for which the DMRS do undergo code multiplexing. A transmitter (109) transmits the DMRS from the two antenna ports set in the setting unit (102).Type: ApplicationFiled: September 28, 2023Publication date: January 25, 2024Inventors: Tadashi YOSHIDA, Ayako HORIUCHI, Takashi IWAI, Yoshihiko OGAWA, Akihiko NISHIO
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Patent number: 11882573Abstract: Provided are wireless communication methods for D2D communication and UEs therefor. A wireless communication method involves transmitting either a first DCI or a second DCI based on whether a first UE and a second UE are to be in a communication type of groupcast or unicast. In the wireless communication methods, the first DCI and the second DCI are scrambled by the UE ID of the second UE if the first UE and the second UE are in the communication type of unicast upon transmitting the first DCI and the second DCI, and the first DCI and the second DCI are scrambled by the group ID if the first UE and the second UE are in the communication type of groupcast upon transmitting the first DCI and the second DCI.Type: GrantFiled: October 24, 2022Date of Patent: January 23, 2024Assignee: Sun Patent TrustInventors: Lilei Wang, Hidetoshi Suzuki, Yoshihiko Ogawa, Masayuki Hoshino
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Publication number: 20240023120Abstract: The present disclosure aims at allowing a demodulation reference signal (DMRS) pattern suitable for a terminal to be selected from among a plurality of DMRS patterns including Legacy DMRS and Reduced DMRS. Disclosed is a terminal including: reception section 21 that receives uplink control information; control section 23 that determines a specific mapping pattern from among a plurality of mapping patterns for an uplink DMRS on the basis of the control information; and DMRS generating section 24 that generates a DMRS according to the specific mapping pattern.Type: ApplicationFiled: September 21, 2023Publication date: January 18, 2024Inventors: Lilei WANG, Kazuki TAKEDA, Ayako HORIUCHI, Alexander GOLITSCHEK EDLER VON ELBWART, Masayuki HOSHINO, Yoshihiko OGAWA
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Patent number: 11864204Abstract: The present disclosure aims at allowing a demodulation reference signal (DMRS) pattern suitable for a terminal to be selected from among a plurality of DMRS patterns including Legacy DMRS and Reduced DMRS. Disclosed is a terminal including: reception section 21 that receives uplink control information; control section 23 that determines a specific mapping pattern from among a plurality of mapping patterns for an uplink DMRS on the basis of the control information; and DMRS generating section 24 that generates a DMRS according to the specific mapping pattern.Type: GrantFiled: November 21, 2022Date of Patent: January 2, 2024Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Lilei Wang, Kazuki Takeda, Ayako Horiuchi, Alexander Golitschek Edler Von Elbwart, Masayuki Hoshino, Yoshihiko Ogawa
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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: 20230412340Abstract: According to the present invention, the received quality of a terminal is improved. The terminal comprises: a reception circuit (202) which receives information for providing a notification of the port of a reference signal for a downlink data signal; and a control circuit (208) which controls the reception of the downlink data signal and the reference signal, on the basis of a number of ranks less than the number of ports indicated by the received information.Type: ApplicationFiled: July 1, 2021Publication date: December 21, 2023Inventors: Shotaro MAKI, Hidetoshi SUZUKI, Hongchao LI, Ayako HORIUCHI, Akihiko NISHIO, Xuan Tuong TRAN, Yoshihiko OGAWA
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Publication number: 20230412238Abstract: The present disclosure provides a communication apparatus and a communication method for enhancing uplink transmission with multiple beams. The communication apparatus comprises: a transceiver, which in operation, receives control information indicating two or more beams for uplink transmissions; and circuitry, which in operation, uses the two or more beams for a plurality of uplink transmission occasions in response to meeting at least one condition for beam switching based on the control information.Type: ApplicationFiled: July 21, 2021Publication date: December 21, 2023Inventors: Xuan Tuong TRAN, Tetsuya YAMAMOTO, Yoshihiko OGAWA
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Patent number: 11849451Abstract: A terminal with which it is possible to appropriately transmit uplink control information. In a terminal (200), a reception unit (202) receives first control information relating to an uplink data channel, and a second control information relating to an uplink control channel for transmitting uplink control information. The first control information includes first indication information indicating the presence or absence of an uplink data transmission and second indication information indicating the presence or absence a channel state information transmission. A transmission unit (220) transmits uplink control information using the resource of the uplink data channel when the first indication information indicates that there is no uplink data transmission and the second indication information indicates that there is no channel state information transmission.Type: GrantFiled: March 25, 2019Date of Patent: December 19, 2023Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Tetsuya Yamamoto, Hidetoshi Suzuki, Yoshihiko Ogawa
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Publication number: 20230403188Abstract: Provided is a transmitter which improves the flexibility of SRS resource allocation without increasing the amount of signaling for notifying the cyclic shift amount. In the transmitter, with regard to each basic shift amount candidate group having a basic shift amount from 0 to N?1, a transmission control unit (206) specifies the actual shift amount imparted to a cyclic shift sequence used in scrambling a reference signal transmitted from each antenna port, said specification being performed based on a table in which cyclic shift amount candidates correspond to each antenna port, and based on setting information transmitted from a base station (100). With regard to basic shift amount candidates for shift amount X, the table differentiates between an offset pattern comprising offset values for cyclic shift amount candidates corresponding to each antenna port and an offset pattern corresponding to basic shift amount candidates of X+N/2.Type: ApplicationFiled: August 15, 2023Publication date: December 14, 2023Inventors: Yoshihiko OGAWA, Akihiko NISHIO, Masayuki HOSHINO, Takashi IWAI
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Publication number: 20230396350Abstract: Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method, R×M sequences specified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M) are divided into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequences is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell.Type: ApplicationFiled: August 18, 2023Publication date: December 7, 2023Inventors: Yoshihiko OGAWA, Daichi IMAMURA, Sadaki FUTAGI, Tomofumi TAKATA
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Patent number: 11831483Abstract: Provided is a transmitter which improves the flexibility of SRS resource allocation without increasing the amount of signaling for notifying the cyclic shift amount. In the transmitter, with regard to each basic shift amount candidate group having a basic shift amount from 0 to N?1, a transmission control unit (206) specifies the actual shift amount imparted to a cyclic shift sequence used in scrambling a reference signal transmitted from each antenna port, said specification being performed based on a table in which cyclic shift amount candidates correspond to each antenna port, and based on setting information transmitted from a base station (100). With regard to basic shift amount candidates for shift amount X, the table differentiates between an offset pattern comprising offset values for cyclic shift amount candidates corresponding to each antenna port and an offset pattern corresponding to basic shift amount candidates of X+N/2.Type: GrantFiled: January 10, 2023Date of Patent: November 28, 2023Assignee: Sun Patent TrustInventors: Yoshihiko Ogawa, Akihiko Nishio, Masayuki Hoshino, Takashi Iwai
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Patent number: 11825426Abstract: A radio communication apparatus is provided, which includes a receiver and a controller. The receiver, in operation, receives a first power headroom (PHR), which is obtained by subtracting a transmit power for a data channel from a maximum transmit power at a mobile station and which is transmitted from the mobile station, and receives a second PHR, which is obtained by subtracting the transmit power for the data channel and a transmit power for a control channel from the maximum transmit power at the mobile station and which is transmitted from the mobile station. The controller, in operation, selectively sets a simultaneous transmission of the data channel and the control channel in different frequency bands to be performed by the mobile station. When the data channel and the control channel are simultaneously transmitted in different frequency bands from the mobile station, the second PHR is obtained and transmitted from the mobile station.Type: GrantFiled: October 3, 2022Date of Patent: November 21, 2023Assignee: Sun Patent TrustInventors: Takashi Iwai, Akihiko Nishio, Daichi Imamura, Yoshihiko Ogawa, Atsushi Matsumoto