Patents by Inventor Kuniyuki Suzuki
Kuniyuki Suzuki 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: 20200120472Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.Type: ApplicationFiled: December 12, 2019Publication date: April 16, 2020Applicant: Mitsubishi Electric CorporationInventors: Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Futoshi KATADA, Hirochika HIRAKI
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Patent number: 10624002Abstract: In a communication system, a UE and an MeNB perform both a direct communication and a communication through a SeNB. Along with moving of the UE, a handover process of switching the MeNB to which the UE is connected, from an S-MeNB to a T-MeNB is performed. The connection between the UE and the SeNB is maintained during the handover process. The UE starts transmitting data to the SeNB before a communication path between the UE and the MeNB is changed from a path formed by the S-MeNB and the UE to a path formed by the T-MeNB and the UE.Type: GrantFiled: November 2, 2016Date of Patent: April 14, 2020Assignee: Mitsubishi Electric CorporationInventors: Taiki Taguchi, Mitsuru Mochizuki, Kuniyuki Suzuki, Haruka Nozawa
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Patent number: 10601526Abstract: A signal is transmitted and received between a base station device and a communication terminal device that are included in a communication system, through a multi-element antenna including a plurality of antenna elements. At least one of the base station device and the communication terminal device includes a PHY processing unit that is a calibration unit that performs calibration of phases and amplitudes of beams formed by the antenna elements when the signal is transmitted and received. The PHY processing unit obtains a correction value for the phases and the amplitudes of the beams in the respective antenna elements so that the phases and the amplitudes of the beams are identical among the antenna elements, and performs the calibration based on the obtained correction value.Type: GrantFiled: May 21, 2019Date of Patent: March 24, 2020Assignee: Mitsubishi Electric CorporationInventors: Hideki Morishige, Masayuki Nakazawa, Mitsuru Mochizuki, Yoshitaka Hara, Kuniyuki Suzuki
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Publication number: 20200083995Abstract: Provided is a technology capable of securing communication quality without providing an additional function such as phase correction. A base station device and a communication terminal device when operating as a transmitting device rotate inverse fast fourier transform (IFFT) output, and copy a last portion of the rotated IFFT output to a head of the rotated IFFT output as a cyclic prefix (CP) to thereby generate a transmission signal so that there is no phase rotation at a head of a demodulation reception window set in a receiving device.Type: ApplicationFiled: December 21, 2017Publication date: March 12, 2020Applicant: Mitsubishi Electric CorporationInventors: Kuniyuki SUZUKI, Masayuki NAKAZAWA
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Publication number: 20200059799Abstract: Provided is a technology capable of securing satisfactory communication quality. A communication system includes a user equipment, and a base station configured to be connected to the user equipment to perform radio communication with the user equipment. The user equipment performs radio communication with a beam. When the user equipment detects a beam disappearance state being a state incapable of maintaining communication quality with the base station, the user equipment transmits a notification of the beam disappearance state with a beam having a wider half width than a half width before detection of the beam disappearance state.Type: ApplicationFiled: February 27, 2018Publication date: February 20, 2020Applicant: Mitsubishi Electric CorporationInventor: Kuniyuki SUZUKI
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Publication number: 20190289663Abstract: A narrow-bandwidth terminal device performs radio communication at a bandwidth narrower than a system bandwidth. The narrow-bandwidth terminal device in an idle state camps on a cell, and performs discontinuous reception of a signal transmitted from the cell. The terminal device also determines a reception condition of the signal, for example, whether the signal can be received. When it is determined that the signal cannot be received, the narrow-bandwidth terminal device moves out of a coverage area of the cell while continuing to perform the discontinuous reception. When it is determined that a discontinuous reception timer has been completed, the narrow-bandwidth terminal device continues to perform the discontinuous reception.Type: ApplicationFiled: June 5, 2019Publication date: September 19, 2019Applicant: Mitsubishi Electric CorporationInventors: Mitsuru Mochizuki, Kuniyuki Suzuki, Masayuki Nakazawa, Noriyuki Fukui, Haruka Nozawa
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Publication number: 20190273565Abstract: A signal is transmitted and received between a base station device and a communication terminal device that are included in a communication system, through a multi-element antenna including a plurality of antenna elements. At least one of the base station device and the communication terminal device includes a PHY processing unit that is a calibration unit that performs calibration of phases and amplitudes of beams formed by the antenna elements when the signal is transmitted and received. The PHY processing unit obtains a correction value for the phases and the amplitudes of the beams in the respective antenna elements so that the phases and the amplitudes of the beams are identical among the antenna elements, and performs the calibration based on the obtained correction value.Type: ApplicationFiled: May 21, 2019Publication date: September 5, 2019Applicant: Mitsubishi Electric CorporationInventors: Hideki Morishige, Masayuki Nakazawa, Mitsuru Mochizuki, Yoshitaka Hara, Kuniyuki Suzuki
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Publication number: 20190268878Abstract: In a communication system, a plurality of base stations includes an MeNB being a first base station, and a plurality of SeNBs to be connected to the MeNB. At least one of control plane data about control of communication and user plane data about a user is transmitted to and received from a user equipment (UE) via the first base station being the MeNB. The control plane data and the user plane data are contained in information provided by a core network about communication with the UE. The communication system can simplify processing of at least one of control plane data and user plane data when a communication terminal device communicates with a plurality of base station devices.Type: ApplicationFiled: July 31, 2017Publication date: August 29, 2019Applicant: Mitsubishi Electric CorporationInventors: Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Hideo UMEHARA, Kuniyuki SUZUKI
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Publication number: 20190261155Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.Type: ApplicationFiled: April 30, 2019Publication date: August 22, 2019Applicant: Mitsubishi Electric CorporationInventors: Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Futoshi KATADA, Hirochika HIRAKI
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Patent number: 10362624Abstract: A narrow-bandwidth terminal device performs radio communication at a bandwidth narrower than a system bandwidth. The narrow-bandwidth terminal device in an idle state camps on a cell, and performs discontinuous reception of a signal transmitted from the cell. The terminal device also determines a reception condition of the signal, for example, whether the signal can be received. When it is determined that the signal cannot be received, the narrow-bandwidth terminal device moves out of a coverage area of the cell while continuing to perform the discontinuous reception. When it is determined that a discontinuous reception timer has been completed, the narrow-bandwidth terminal device continues to perform the discontinuous reception.Type: GrantFiled: January 7, 2016Date of Patent: July 23, 2019Assignee: Mitsubishi Electric CorporationInventors: Mitsuru Mochizuki, Kuniyuki Suzuki, Masayuki Nakazawa, Noriyuki Fukui, Haruka Nozawa
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Patent number: 10348422Abstract: A signal is transmitted and received between a base station device and a communication terminal device that are included in a communication system, through a multi-element antenna including a plurality of antenna elements. At least one of the base station device and the communication terminal device includes a PHY processing unit that is a calibration unit that performs calibration of phases and amplitudes of beams formed by the antenna elements when the signal is transmitted and received. The PHY processing unit obtains a correction value for the phases and the amplitudes of the beams in the respective antenna elements so that the phases and the amplitudes of the beams are identical among the antenna elements, and performs the calibration based on the obtained correction value.Type: GrantFiled: April 6, 2016Date of Patent: July 9, 2019Assignee: Mitsubishi Electric CorporationInventors: Hideki Morishige, Masayuki Nakazawa, Mitsuru Mochizuki, Yoshitaka Hara, Kuniyuki Suzuki
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Patent number: 10327128Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.Type: GrantFiled: October 3, 2018Date of Patent: June 18, 2019Assignee: Mitsubishi Electric CorporationInventors: Mitsuru Mochizuki, Kuniyuki Suzuki, Futoshi Katada, Hirochika Hiraki
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Publication number: 20190150011Abstract: Provided is a communication system capable of suppressing, under communication environment including a plurality of cells, degradation in communication quality and decrease in communication rate and communication capacity due to interference from the other cells. Each of the cells includes a plurality of antenna elements, and performs radio communication with a communication terminal device through the antenna elements. Each of the cells notifies the other cells of settings for measuring channel information on a channel for performing radio communication of its own cell. Each of the cells may notify a communication terminal device being served thereby of the settings for measuring the channel information of its own cell. Here, the communication terminal device measures the channel information based on the settings notified from each of the cells, and reports a result of the measured channel information to a corresponding one of the cells when the result satisfies a predetermined reporting condition.Type: ApplicationFiled: May 8, 2017Publication date: May 16, 2019Applicant: Mitsubishi Electric CorporationInventors: Hiroyuki SHOJI, Toshiki TANAKA, Mitsuru MOCHIZUKI, Kuniyuki SUZUKI
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Publication number: 20190037382Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.Type: ApplicationFiled: October 3, 2018Publication date: January 31, 2019Applicant: Mitsubishi Electric CorporationInventors: Mitsuru MOCHIZUKI, Kuniyuki Suzuki, Futoshi Katada, Hirochika Hiraki
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Publication number: 20180352481Abstract: In a communication system, a UE and an MeNB perform both a direct communication and a communication through a SeNB. Along with moving of the UE, a handover process of switching the MeNB to which the UE is connected, from an S-MeNB to a T-MeNB is performed. The connection between the UE and the SeNB is maintained during the handover process. The UE starts transmitting data to the SeNB before a communication path between the UE and the MeNB is changed from a path formed by the S-MeNB and the UE to a path formed by the T-MeNB and the UE.Type: ApplicationFiled: November 2, 2016Publication date: December 6, 2018Applicant: Mitsubishi Electric CorporationInventors: Taiki TAGUCHI, Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Haruka NOZAWA
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Patent number: 10136329Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.Type: GrantFiled: August 3, 2015Date of Patent: November 20, 2018Assignee: Mitsubishi Electric CorporationInventors: Mitsuru Mochizuki, Kuniyuki Suzuki, Futoshi Katada, Hirochika Hiraki
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Publication number: 20180191544Abstract: A technique to a radio communication system, a base station, and a radio communication method achieving switching of analog control such as phase or amplitude control, while suppressing reduction in power efficiency resulting from a multipath propagation channel. The radio communication system relating to this technique makes radio communication through transmission and reception of a plurality of radio communication frames. The plurality of radio communication frames includes successive radio communication frames, at least one of which is a radio communication frame including an effective symbol, and a cyclic prefix and a non-transmission interval added to the effective symbol.Type: ApplicationFiled: July 12, 2016Publication date: July 5, 2018Applicant: Mitsubishi Electric CorporationInventors: Hideo UMEHARA, Kuniyuki SUZUKI, Mitsuru MOCHIZUKI
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Publication number: 20180176839Abstract: When being connected to a macro cell (S-MeNB) and a small cell (SeNB), a user equipment device performs a pre-handover process of disconnecting the connection with the SeNB before a handover process of switching a macro cell connected with the UE from the macro cell (S-MeNB) that is a moving source to a macro cell (T-MeNB) that is a moving destination along with moving of the UE, and after the handover process, performs a post-handover process of reestablishing the connection with the SeNB.Type: ApplicationFiled: March 16, 2015Publication date: June 21, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takuya OHARA, Taisei SUEMITSU, Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Masayuki NAKAZAWA, Daisuke HIRAMATSU
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Publication number: 20180123707Abstract: A signal is transmitted and received between a base station device and a communication terminal device that are included in a communication system, through a multi-element antenna including a plurality of antenna elements. At least one of the base station device and the communication terminal device includes a PHY processing unit that is a calibration unit that performs calibration of phases and amplitudes of beams formed by the antenna elements when the signal is transmitted and received. The PHY processing unit obtains a correction value for the phases and the amplitudes of the beams in the respective antenna elements so that the phases and the amplitudes of the beams are identical among the antenna elements, and performs the calibration based on the obtained correction value.Type: ApplicationFiled: April 6, 2016Publication date: May 3, 2018Applicant: Mitsubishi Electric CorporationInventors: Hideki MORISHIGE, Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Yoshitaka HARA, Kuniyuki SUZUKI
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Publication number: 20180007733Abstract: A narrow-bandwidth terminal device performs radio communication at a bandwidth narrower than a system bandwidth. The narrow-bandwidth terminal device in an idle state camps on a cell, and performs discontinuous reception of a signal transmitted from the cell. The terminal device also determines a reception condition of the signal, for example, whether the signal can be received. When it is determined that the signal cannot be received, the narrow-bandwidth terminal device moves out of a coverage area of the cell while continuing to perform the discontinuous reception. When it is determined that a discontinuous reception timer has been completed, the narrow-bandwidth terminal device continues to perform the discontinuous reception.Type: ApplicationFiled: January 7, 2016Publication date: January 4, 2018Applicant: Mitsubishi Electric CorporationInventors: Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Masayuki NAKAZAWA, Noriyuki FUKUI, Haruka NOZAWA