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: 20230007505Abstract: 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: September 9, 2022Publication date: January 5, 2023Applicant: Mitsubishi Electric CorporationInventor: Kuniyuki SUZUKI
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Publication number: 20220353770Abstract: 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: July 13, 2022Publication date: November 3, 2022Applicant: Mitsubishi Electric CorporationInventors: Takuya OHARA, Taisei Suemitsu, Mitsuru Mochizuki, Kuniyuki Suzuki, Masayuki Nakazawa, Daisuke Hiramatsu
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Patent number: 11483718Abstract: 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: GrantFiled: August 13, 2020Date of Patent: October 25, 2022Assignee: Mitsubishi Electric CorporationInventor: Kuniyuki Suzuki
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Publication number: 20220248371Abstract: 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: April 19, 2022Publication date: August 4, 2022Applicant: Mitsubishi Electric CorporationInventors: Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Hideo UMEHARA, Kuniyuki SUZUKI
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Publication number: 20220167214Abstract: In a communication system according to the present invention, 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: February 14, 2022Publication date: May 26, 2022Applicant: Mitsubishi Electric CorporationInventors: Taiki TAGUCHI, Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Haruka NOZAWA
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Patent number: 11343798Abstract: 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: GrantFiled: September 23, 2020Date of Patent: May 24, 2022Assignee: Mitsubishi Electric CorporationInventors: Masayuki Nakazawa, Mitsuru Mochizuki, Hideo Umehara, Kuniyuki Suzuki
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Publication number: 20220132460Abstract: Provided is a radio communication technology with high reliability. A communication system includes a communication terminal, base stations, and a host device of the base stations. A serving base station of the communication terminal or the host device selects, from among the base stations, a positioning base station transmitting a positioning signal for measuring a position of the communication terminal. The positioning base station transmits the positioning signal, and the communication terminal receives the positioning signal.Type: ApplicationFiled: March 24, 2020Publication date: April 28, 2022Applicant: Mitsubishi Electric CorporationInventors: Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Fumihiro HASEGAWA, Kuniyuki SUZUKI, Daichi UCHINO, Kiyoshige NAKAMURA, Noriyuki FUKUI
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Publication number: 20220103313Abstract: 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 14, 2021Publication date: March 31, 2022Applicant: Mitsubishi Electric CorporationInventors: Kuniyuki SUZUKI, Masayuki NAKAZAWA
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Publication number: 20220038917Abstract: The present invention has an object to provide a specific communication technology for realizing effective communication with a flying object in a communication apparatus including the flying object. The communication apparatus includes a first base station, a flying object including a second base station, and a mobile terminal to communicate with the second base station. The first base station notifies flying object specification information that is information indicating that the second base station is included in the flying object. When the flying object specification information is received, the mobile terminal sets a direction of a beam for detecting the second base station to a second direction that is a direction vertically upward compared to a first direction that is the direction of the beam in a case where the flying object specification information is not received.Type: ApplicationFiled: October 20, 2021Publication date: February 3, 2022Applicant: Mitsubishi Electric CorporationInventor: Kuniyuki SUZUKI
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Patent number: 11201703Abstract: 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: GrantFiled: December 21, 2017Date of Patent: December 14, 2021Assignee: Mitsubishi Electric CorporationInventors: Kuniyuki Suzuki, Masayuki Nakazawa
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Patent number: 11190952Abstract: The present disclosure has an object to provide a specific communication technology for realizing effective communication with a flying object in a communication apparatus including the flying object. The communication apparatus includes a first base station, a flying object including a second base station, and a mobile terminal to communicate with the second base station. The first base station notifies flying object specification information that is information indicating that the second base station is included in the flying object. When the flying object specification information is received, the mobile terminal sets a direction of a beam for detecting the second base station to a second direction that is a direction vertically upward compared to a first direction that is the direction of the beam in a case where the flying object specification information is not received.Type: GrantFiled: August 23, 2018Date of Patent: November 30, 2021Assignee: Mitsubishi Electric CorporationInventor: Kuniyuki Suzuki
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Publication number: 20210367685Abstract: 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: August 6, 2021Publication date: November 25, 2021Applicant: Mitsubishi Electric CorporationInventors: Hideki MORISHIGE, Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Yoshitaka HARA, Kuniyuki SUZUKI
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Patent number: 11128389Abstract: 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: January 24, 2020Date of Patent: September 21, 2021Assignee: Mitsubishi Electric CorporationInventors: Hideki Morishige, Masayuki Nakazawa, Mitsuru Mochizuki, Yoshitaka Hara, Kuniyuki Suzuki
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Publication number: 20210289335Abstract: 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: May 28, 2021Publication date: September 16, 2021Applicant: Mitsubishi Electric CorporationInventors: Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Futoshi KATADA, Hirochika HIRAKI
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Publication number: 20210258943Abstract: A base station device is configured to set, for each communication terminal device, a radio format for signals transmitted to and received from the communication terminal device. The radio format is set for each communication terminal device in accordance with, for example, a type of use including a moving speed of the communication terminal device. The base station device may be configured to change the radio format for the communication terminal device based on the information about a change in the environment of a radio communication between the communication terminal device and the base station device and a change including the communication terminal device's location. The signals transmitted and received between the base station device and the communication terminal device include radio formats in which at least one of a length of a symbol of the signal and a length of a cyclic prefix in an OFDM scheme differs.Type: ApplicationFiled: April 7, 2021Publication date: August 19, 2021Applicant: Mitsubishi Electric CorporationInventors: Masayuki NAKAZAWA, Kuniyuki SUZUKI, Mitsuru MOCHIZUKI, Koji ONO, Takayuki NONAMI, Naohito TOMOE, Fumiki HASEGAWA
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Publication number: 20210227607Abstract: Provided is a technology that can maintain the reliability and the transmission rate in the communication. A communication system includes a communication terminal, and a first base station and a second base station that are configured to perform radio communication with the communication terminal. The first base station notifies the second base station of information on a numerology to be used for communication between the first base station and the communication terminal when the first base station and the second base station provide the communication terminal with dual connectivity using a same frequency band (Steps ST1501 and ST1502).Type: ApplicationFiled: July 24, 2019Publication date: July 22, 2021Applicant: Mitsubishi Electric CorporationInventors: Yasuhiro ONAKA, Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Kuniyuki SUZUKI
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Patent number: 11051155Abstract: 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: December 12, 2019Date of Patent: June 29, 2021Assignee: Mitsubishi Electric CorporationInventors: Mitsuru Mochizuki, Kuniyuki Suzuki, Futoshi Katada, Hirochika Hiraki
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Publication number: 20210176815Abstract: 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: February 18, 2021Publication date: June 10, 2021Applicant: Mitsubishi Electric CorporationInventors: Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Masayuki NAKAZAWA, Noriyuki FUKUI, Haruka NOZAWA
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Publication number: 20210160725Abstract: 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: February 5, 2021Publication date: May 27, 2021Applicant: Mitsubishi Electric CorporationInventors: Hiroyuki SHOJI, Toshiki TANAKA, Mitsuru MOCHIZUKI, Kuniyuki SUZUKI
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Patent number: 11006427Abstract: A base station device is configured to set, for each communication terminal device, a radio format for signals transmitted to and received from the communication terminal device. The radio format is set for each communication terminal device in accordance with, for example, a type of use including a moving speed of the communication terminal device. The base station device may be configured to change the radio format for the communication terminal device based on the information about a change in the environment of a radio communication between the communication terminal device and the base station device and a change including the communication terminal device's location. The signals transmitted and received between the base station device and the communication terminal device include radio formats in which at least one of a length of a symbol of the signal and a length of a cyclic prefix in an OFDM scheme differs.Type: GrantFiled: April 15, 2020Date of Patent: May 11, 2021Assignee: Mitsubishi Electric CorporationInventors: Masayuki Nakazawa, Kuniyuki Suzuki, Mitsuru Mochizuki, Koji Ono, Takayuki Nonami, Naohito Tomoe, Fumiki Hasegawa