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: 20230370188Abstract: A terminal apparatus includes circuitry and a transmitter. The circuitry, in operation, generates a reference signal using a cyclic shift value and an orthogonal sequence, which are associated with each other. The orthogonal sequence is one of two orthogonal sequences corresponding to a first orthogonal sequence [1, 1] and a second orthogonal sequence [1, ?1]. The cyclic shift value is one of 12 cyclic shift values ranging from 0 to 11. The transmitter, in operation, transmits the reference signal multiplexed with a data signal. Two of the cyclic shift values having a difference of 6 are respectively associated with the two orthogonal sequences.Type: ApplicationFiled: July 27, 2023Publication date: November 16, 2023Inventors: Yoshihiko OGAWA, Akihiko NISHIO, Takashi IWAI, Seigo NAKAO, Daichi IMAMURA, Atsushi SUMASU
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Publication number: 20230362909Abstract: A scheduling apparatus and a scheduling method, wherein the amount of signaling for frequency resource allocation information can be reduced while maintaining system throughput performance. In a base station apparatus, a scheduling section allocates frequency resources to frequency allocation target terminals based on set frequency allocation units, and a frequency allocation parameter setting section adjusts the set frequency allocation units set in the scheduling section based on cluster numbers. Due to this, in each cluster number, frequency resources can be allocated based on the most suitable frequency allocation units with respect to the signaling bit number. As a result, the amount of signaling for frequency resource allocation information can be reduced. Further, system throughput can be maintained by making the cluster number, which is a parameter having little effect on system throughput, a setting parameter for frequency allocation units.Type: ApplicationFiled: July 18, 2023Publication date: November 9, 2023Inventors: Takashi Iwai, Sadaki Futagi, Daichi Imamura, Akihiko Nishio, Seigo Nakao, Yoshihiko Ogawa
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Publication number: 20230362796Abstract: The present disclosure provides communication apparatuses and communication methods for optimising system information (SI) acquisition for new radio (NR) devices. The communication apparatuses include a communication apparatus which comprises a receiver, which in operation, receives control information relating to a first period and/or a second period; and circuitry, which in operation, acquires system information (SI) in the first period if a first condition is met, or acquires the SI in the second period if a second condition is met.Type: ApplicationFiled: June 5, 2021Publication date: November 9, 2023Inventors: Xuan Tuong TRAN, Hidetoshi SUZUKI, Hongchao LI, Lei HUANG, Yang KANG, Libin KOODATHUMKAL MATHEW, Tiong Hou TEO, Hong Cheng, Michael SIM, Yihui LI, Yoshihiko OGAWA, Shotaro MAKI
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Patent number: 11811430Abstract: 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: GrantFiled: February 28, 2023Date of Patent: November 7, 2023Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Tadashi Yoshida, Ayako Horiuchi, Takashi Iwai, Yoshihiko Ogawa, Akihiko Nishio
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Publication number: 20230319797Abstract: It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length and a standard sequence number in a step, setting a threshold value in accordance with an RB number in a step, setting a sequence length corresponding to RB number in a step, judging whether ¦r/N?rb/Nb¦=Xth(m) is satisfied in a step, including a plurality of Zadoff-Chu sequences with a sequence number and a sequence length in a sequence group in a step if the judgment is positive, and allocating the sequence group to the same cell in a step.Type: ApplicationFiled: June 6, 2023Publication date: October 5, 2023Inventors: Takashi IWAI, Daichi IMAMURA, Tomofumi TAKATA, Yoshihiko OGAWA
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Patent number: 11778635Abstract: Communication apparatuses and methods reduce the amount of signaling while maintaining a high scheduling gain. A determination unit stores a correspondence between the number of code words and the number of clusters to reduce the maximum value for the number of clusters allocated to each terminal as the number of code words increases, and thus determines the maximum value for the number of clusters based on the number of code words acquired. Based on the number of code words for a transmission signal from a terminal, an estimated value for the reception quality that is output by an estimation unit, and the maximum value for the number of clusters that is output by the determination unit, a scheduling unit schedules the allocation of the transmission signal transmitted by each terminal to a transmission band frequency (frequency resource) so as not to exceed the maximum value for the number of clusters.Type: GrantFiled: April 11, 2022Date of Patent: October 3, 2023Assignee: Sun Patent TrustInventors: Yoshihiko Ogawa, Akihiko Nishio, Daichi Imamura, Seigo Nakao, Masayuki Hoshino, Takashi Iwai, Sadaki Futagi
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Patent number: 11770201Abstract: 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: GrantFiled: October 26, 2021Date of Patent: September 26, 2023Assignee: Panasonic Holdings CorporationInventors: Yoshihiko Ogawa, Daichi Imamura, Sadaki Futagi, Tomofumi Takata
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Publication number: 20230299913Abstract: Disclosed are a wireless transmitter and a reference signal transmission method that improve channel estimation accuracy. In a terminal, which transmits a reference signal using n (n is a non-negative integer 2 or greater) band blocks (which correspond to clusters here), which are disposed with spaces therebetween in a frequency direction, a reference signal controller switches the reference signal formation method of a reference signal generator between a first formation method and a second formation method based on the number (n) of band blocks. In addition, a threshold value setting unit adjusts a switching threshold value based on the frequency spacing between band blocks. Thus, the reference signal formation method can be selected with good accuracy and, as a result, channel estimation accuracy is further improved.Type: ApplicationFiled: May 25, 2023Publication date: September 21, 2023Inventors: Takashi Iwai, Sadaki Futagi, Tomohumi Takata, Daichi Imamura, Yoshihiko Ogawa
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Publication number: 20230292220Abstract: An integrated circuit includes circuitry, which, in operation, controls transmitting downlink data to a terminal apparatus; receiving a plurality of transport blocks which are transmitted in a same time period using a same frequency band in a spatial multiplexing scheme, wherein a same acknowledgement information (ACK/NACK) relating to an error detection result of the downlink data is scrambled with different scrambling schemes respectively for the plurality of transport blocks and the respectively scrambled ACK/NACK is multiplexed with data on respective ones of the plurality of transport blocks, and channel quality information (CQI) of a downlink channel is multiplexed with the data on only one transport block of the plurality of transport blocks by the terminal apparatus; and extracting the ACK/NACK and the CQI from the received plurality of transport blocks.Type: ApplicationFiled: May 23, 2023Publication date: September 14, 2023Inventors: Yoshihiko OGAWA, Seigo NAKAO, Akihiko NISHIO, Masayuki HOSHINO, Daichi IMAMURA, Atsushi SUMASU
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Patent number: 11757551Abstract: A terminal apparatus includes circuitry and a transmitter. The circuitry, in operation, generates a reference signal using a cyclic shift value and an orthogonal sequence, which are associated with each other. The orthogonal sequence is one of two orthogonal sequences corresponding to a first orthogonal sequence [1, 1] and a second orthogonal sequence [1, ?1]. The cyclic shift value is one of 12 cyclic shift values ranging from 0 to 11. The transmitter, in operation, transmits the reference signal multiplexed with a data signal. Two of the cyclic shift values having a difference of 6 are respectively associated with the two orthogonal sequences.Type: GrantFiled: July 21, 2022Date of Patent: September 12, 2023Assignee: Sun Patent TrustInventors: Yoshihiko Ogawa, Akihiko Nishio, Takashi Iwai, Seigo Nakao, Daichi Imamura, Atsushi Sumasu
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Publication number: 20230284233Abstract: The present disclosure provides communication apparatuses and communication methods for implementation of Multi-TB Scheduling for Single DCI-Based Multi-TRP/Panel Transmission and Single DCI-based Single TRP/Panel Transmission. The communication apparatuses include a communication apparatus which comprises a receiver, which in operation, receives a single downlink control information (DCI) including scheduling information, the scheduling information indicating radio resources of a plurality of transport blocks (TBs); and circuitry, which in operation, obtains the radio resources of the plurality of TBs based on the scheduling information.Type: ApplicationFiled: June 5, 2021Publication date: September 7, 2023Inventors: Xuan Tuong TRAN, Hidetoshi SUZUKI, Tetsuya YAMAMOTO, Hongchao LI, Yoshihiko OGAWA
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Patent number: 11751143Abstract: Disclosed is a wireless communication device that can suppress an increase in power consumption of a terminal while preventing the degradation of SINR measurement precision resulting from TPC errors in a base station. A terminal controls the transmission power of a second signal by adding an offset to the transmission power of a first signal; an offset-setting unit sets an offset correction value in response to a transmission time gap between a third signal transmitted the previous time and the second signal transmitted this time; and a transmission power control unit controls the transmission power of the second signal using the correction value.Type: GrantFiled: April 27, 2022Date of Patent: September 5, 2023Assignee: Sun Patent TrustInventors: Takashi Iwai, Daichi Imamura, Akihiko Nishio, Yoshihiko Ogawa, Shinsuke Takaoka
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Patent number: 11751181Abstract: A scheduling apparatus and a scheduling method, wherein the amount of signaling for frequency resource allocation information can be reduced while maintaining system throughput performance. In a base station apparatus, a scheduling section allocates frequency resources to frequency allocation target terminals based on set frequency allocation units, and a frequency allocation parameter setting section adjusts the set frequency allocation units set in the scheduling section based on cluster numbers. Due to this, in each cluster number, frequency resources can be allocated based on the most suitable frequency allocation units with respect to the signaling bit number. As a result, the amount of signaling for frequency resource allocation information can be reduced. Further, system throughput can be maintained by making the cluster number, which is a parameter having little effect on system throughput, a setting parameter for frequency allocation units.Type: GrantFiled: December 16, 2021Date of Patent: September 5, 2023Assignee: Sun Patent TrustInventors: Takashi Iwai, Sadaki Futagi, Daichi Imamura, Akihiko Nishio, Seigo Nakao, Yoshihiko Ogawa
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Patent number: 11711791Abstract: It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length and a standard sequence number in a step, setting a threshold value in accordance with an RB number in a step, setting a sequence length corresponding to RB number in a step, judging whether ¦r/N?rb/Nb¦=Xth(m) is satisfied in a step, including a plurality of Zadoff-Chu sequences with a sequence number and a sequence length in a sequence group in a step if the judgment is positive, and allocating the sequence group to the same cell in a step.Type: GrantFiled: January 7, 2022Date of Patent: July 25, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICAInventors: Takashi Iwai, Daichi Imamura, Tomofumi Takata, Yoshihiko Ogawa
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Patent number: 11700098Abstract: Disclosed are a wireless transmitter and a reference signal transmission method that improve channel estimation accuracy. In a terminal, which transmits a reference signal using n (n is a non-negative integer 2 or greater) band blocks (which correspond to clusters here), which are disposed with spaces therebetween in a frequency direction, a reference signal controller switches the reference signal formation method of a reference signal generator between a first formation method and a second formation method based on the number (n) of band blocks. In addition, a threshold value setting unit adjusts a switching threshold value based on the frequency spacing between band blocks. Thus, the reference signal formation method can be selected with good accuracy and, as a result, channel estimation accuracy is further improved.Type: GrantFiled: June 16, 2022Date of Patent: July 11, 2023Assignee: Sun Patent TrustInventors: Takashi Iwai, Sadaki Futagi, Tomohumi Takata, Daichi Imamura, Yoshihiko Ogawa
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Patent number: 11695526Abstract: The present disclosure provides a terminal capable of efficiently transmitting data of different services. In this terminal (200), a controller (209) determines a transmission operation of a first transmission, corresponding to a first service, and a second transmission, corresponding to a second service, based on the first transmission and a setting of a reference signal included in the second transmission. A transmitter (216) transmits an uplink signal including at least a signal of the first transmission based on the determined transmission operation.Type: GrantFiled: January 9, 2019Date of Patent: July 4, 2023Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Tetsuya Yamamoto, Ankit Bhamri, Hidetoshi Suzuki, Yoshihiko Ogawa
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Publication number: 20230208481Abstract: 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: February 28, 2023Publication date: June 29, 2023Inventors: Tadashi YOSHIDA, Ayako HORIUCHI, Takashi IWAI, Yoshihiko OGAWA, Akihiko NISHIO
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Patent number: 11689986Abstract: An integrated circuit includes circuitry, which, in operation, controls transmitting downlink data to a terminal apparatus; receiving a plurality of transport blocks which are transmitted in a same time period using a same frequency band in a spatial multiplexing scheme, wherein a same acknowledgement information (ACK/NACK) relating to an error detection result of the downlink data is scrambled with different scrambling schemes respectively for the plurality of transport blocks and the respectively scrambled ACK/NACK is multiplexed with data on respective ones of the plurality of transport blocks, and channel quality information (CQI) of a downlink channel is multiplexed with the data on only one transport block of the plurality of transport blocks by the terminal apparatus; and extracting the ACK/NACK and the CQI from the received plurality of transport blocks.Type: GrantFiled: March 22, 2021Date of Patent: June 27, 2023Assignee: Sun Patent TrustInventors: Yoshihiko Ogawa, Seigo Nakao, Akihiko Nishio, Masayuki Hoshino, Daichi Imamura, Atsushi Sumasu
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Patent number: 11632153Abstract: 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: GrantFiled: April 7, 2021Date of Patent: April 18, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICAInventors: Tadashi Yoshida, Ayako Horiuchi, Takashi Iwai, Yoshihiko Ogawa, Akihiko Nishio
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Publication number: 20230107098Abstract: 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: November 21, 2022Publication date: April 6, 2023Inventors: Lilei WANG, Kazuki TAKEDA, Ayako HORIUCHI, Alexander GOLITSCHEK EDLER VON ELBWART, Masayuki HOSHINO, Yoshihiko OGAWA