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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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
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Patent number: 11616619Abstract: Provided is a base station with which it is possible to appropriately arrange a reference signal. In a base station (100), a control unit (101) determines a second threshold value on the basis of a first threshold value used in determining the arrangement of a reference signal. A transmission unit (105) transmits the reference signal arranged on the basis of the second threshold value.Type: GrantFiled: August 26, 2019Date of Patent: March 28, 2023Assignee: Panasonic Intellectual Propertv Corporation of AmericaInventors: Shotaro Maki, Takashi Iwai, Ayako Horiuchi, Ankit Bhamri, Yoshihiko Ogawa
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Patent number: 11616535Abstract: Provided are a radio communication terminal apparatus and a radio transmission method by which intersymbol interference of DM-RS of a CoMP terminal and a Non-CoMP terminal can be reduced. A CoMP set setting unit (102) sets the cell IDs of all cells in the CoMP set in a cell selection unit (104), and a serving cell setting unit (103) sets the cell ID of the serving cell in the cell selection unit (104). The cell selection unit (104) selects the cell ID having a number closest to the cell ID of the serving cell from the cells in the CoMP set. A sequence information calculation unit (106) derives a sequence group number from the selected cell ID, and the sequence information calculation unit (106) calculates a sequence number from the derived sequence group number and a transmission bandwidth of the DM-RS.Type: GrantFiled: November 21, 2019Date of Patent: March 28, 2023Assignee: SUN PATENT TRUSTInventors: Takashi Iwai, Akihiko Nishio, Yoshihiko Ogawa, Seigo Nakao, Masayuki Hoshino
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Publication number: 20230074444Abstract: 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: ApplicationFiled: November 11, 2022Publication date: March 9, 2023Inventors: Yoshihiko OGAWA, Akihiko NISHIO, Seigo NAKAO
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Publication number: 20230074018Abstract: This terminal comprises a reception circuit that receives parameters pertaining to a license-exempt band, and a control circuit that determines information included in uplink control information on the basis of the parameters.Type: ApplicationFiled: December 2, 2020Publication date: March 9, 2023Inventors: Tomoya NUNOME, Tetsuya YAMAMOTO, Hidetoshi SUZUKI, Quan KUANG, Ayako HORIUCHI, Yoshihiko OGAWA
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Publication number: 20230053871Abstract: Apparatuses and systems for providing multiple structures to enable flexibility of a multiple multiple transmission and reception point ultra-reliable low-latency communication (M-TRP URLLC) operation and reduce measurement effort and power consumption from a transceiving apparatus such as a UE are provided. The techniques disclosed here feature a transceiving apparatus including a transceiver and circuitry. The transceiver, in operation, receives signals from multiple transmission and reception points (M-TRPs) in a network on at least physical downlink shared channels (PDSCHs). The circuitry, in operation, performs beam failure recovery (BFR) by evaluating beam failure detection (BFD) and candidate new beam detection (CBD) for the signals from at least a first one of the M-TRPs.Type: ApplicationFiled: December 3, 2020Publication date: February 23, 2023Inventors: Xuan Tuong TRAN, Hidetoshi SUZUKI, Lei HUANG, Tien-Ming, Benjamin KOH, Yang KANG, Akihiko NISHIO, Yoshihiko OGAWA
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Publication number: 20230048151Abstract: 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: ApplicationFiled: October 24, 2022Publication date: February 16, 2023Inventors: Lilei WANG, Hidetoshi SUZUKI, Yoshihiko OGAWA, Masayuki HOSHINO
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Patent number: 11582082Abstract: 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: September 21, 2021Date of Patent: February 14, 2023Assignee: Sun Patent TrustInventors: Yoshihiko Ogawa, Akihiko Nishio, Masayuki Hoshino, Takashi Iwai
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Publication number: 20230024432Abstract: 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 3, 2022Publication date: January 26, 2023Inventors: Takashi IWAI, Akihiko NISHIO, Daichi IMAMURA, Yoshihiko OGAWA, Atsushi MATSUMOTO
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Publication number: 20230006874Abstract: 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: ApplicationFiled: September 7, 2022Publication date: January 5, 2023Inventors: Takashi IWAI, Daichi IMAMURA, Tomofumi TAKATA, Atsushi MATSUMOTO, Yoshihiko OGAWA, Sadaki FUTAGI
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Patent number: 11540265Abstract: 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: December 22, 2020Date of Patent: December 27, 2022Assignee: 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: 11533147Abstract: 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: September 24, 2020Date of Patent: December 20, 2022Assignee: Sun Patent TrustInventors: Yoshihiko Ogawa, Akihiko Nishio, Seigo Nakao
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Patent number: 11516774Abstract: 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: January 21, 2021Date of Patent: November 29, 2022Assignee: Sun Patent TrustInventors: Lilei Wang, Hidetoshi Suzuki, Yoshihiko Ogawa, Masayuki Hoshino
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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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Publication number: 20220360352Abstract: 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 21, 2022Publication date: November 10, 2022Inventors: Yoshihiko Ogawa, Akihiko Nishio, Takashi Iwai, Seigo Nakao, Daichi Imamura, Atsushi Sumasu
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Patent number: 11496973Abstract: 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: February 8, 2021Date of Patent: November 8, 2022Assignee: Sun Patent TrustInventors: Takashi Iwai, Akihiko Nishio, Daichi Imamura, Yoshihiko Ogawa, Atsushi Matsumoto
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Patent number: 11476906Abstract: Provided is a base station capable of appropriately applying precoding to a PDCCH. At the base station (100), a precoding control unit (105) sets a precoding granularity, which indicates a period in which the same precoding is used, to multiple control channels respectively disposed in different time resources. A transmission unit (108) transmits signals of the multiple control channels to a terminal (200) on the basis of the set precoding granularity.Type: GrantFiled: April 4, 2019Date of Patent: October 18, 2022Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Tomoya Nunome, Hidetoshi Suzuki, Takashi Iwai, Ayako Horiuchi, Yoshihiko Ogawa
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Patent number: 11469872Abstract: 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: April 23, 2020Date of Patent: October 11, 2022Assignee: Godo Kaisha IP Bridge 1Inventors: Takashi Iwai, Daichi Imamura, Tomofumi Takata, Atsushi Matsumoto, Yoshihiko Ogawa, Sadaki Futagi
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Publication number: 20220321297Abstract: 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: June 16, 2022Publication date: October 6, 2022Inventors: Takashi Iwai, Sadaki Futagi, Tomohumi Takata, Daichi Imamura, Yoshihiko Ogawa