Patents by Inventor Takahisa Aoyama

Takahisa Aoyama 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).

  • Publication number: 20200296648
    Abstract: When a handover request for performing a handover of a terminal (70) from a macro cell C1 to a CSG cell C2 is received from an SeNB 10 (S8), a base station (TeNB) (40) of the CSG cell C2 transmits a handover response in accordance with a handover enabled/disabled state (S12). The handover response includes an identifier of the terminal (70) in the CSG cell C2. Upon receiving the response, the SeNB (10) notifies the identifier to the terminal (70) (S14). The TeNB (40) repeatedly transmits a dedicated signal containing a handover command via a dedicated channel set using the identifier at an interval shorter than a gap period (S18). Accordingly, whether or not access is permitted can be judged promptly and a smooth handover can be realized.
    Type: Application
    Filed: June 1, 2020
    Publication date: September 17, 2020
    Inventors: Hidenori Matsuo, Takahisa Aoyama, Hong Tat Toh, Hidetoshi Suzuki
  • Publication number: 20200281000
    Abstract: The invention relates to methods for improving a scheduling request transmission between a UE and a base station. The transmission of the scheduling request is postponed, by implementing a threshold that the data in the transmission buffer has to reach, before a transmission of the scheduling request is triggered. In one variant, the data in the transmission buffer needs to reach a specific amount, to trigger a scheduling request. The invention refers to further improvements: the PDDCH monitoring time window is delayed after sending a scheduling request; the dedicated scheduling request resources of the PUCCH are prioritized differently such that low-priority scheduling requests are transmitted less often.
    Type: Application
    Filed: May 18, 2020
    Publication date: September 3, 2020
    Inventors: Joachim Loehr, Takahisa Aoyama, Prateek Basu-Mallick, Takashi Tamura, Martin Feuersaenger
  • Patent number: 10731015
    Abstract: The present invention aims to provide a modified fluorine-containing copolymer excellent in crack resistance, a fluororesin molded article, and a method of producing a fluororesin molded article. The present invention includes a modified fluorine-containing copolymer consisting only of tetrafluoroethylene units and perfluoro(alkyl vinyl ether) units. The copolymer is modified by irradiation with radiation at an irradiation temperature not higher than the melting point of the copolymer but not lower than 200° C.
    Type: Grant
    Filed: July 4, 2013
    Date of Patent: August 4, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kyouhei Sawaki, Hideki Kono, Hitoshi Imamura, Takahisa Aoyama, Masamichi Sukegawa
  • Publication number: 20200221353
    Abstract: When detecting occurrence of an event for transmitting a measurement report of a radio condition of a cell at a frequency set for a base station apparatus, to the base station apparatus (3) communicating with a terminal apparatus (2), the terminal apparatus (2) in a wireless communication system (1) creates a measurement report including information indicating radio conditions of cells at a frequency at which the event occurred and at another different frequency. The base station apparatus (3) controls whether or not to perform handover of the terminal apparatus (2) to another cell, on the basis of the measurement report transmitted from the terminal apparatus (2). Thereby, there is provided a wireless communication system in which a base station apparatus and the terminal apparatus are communicable with each other using multiple frequencies, the wireless communication system being capable of shortening time required for handover.
    Type: Application
    Filed: March 17, 2020
    Publication date: July 9, 2020
    Inventors: Takashi Tamura, Takahisa Aoyama, Jun Hirano
  • Patent number: 10708839
    Abstract: When a handover request for performing a handover of a terminal (70) from a macro cell C1 to a CSG cell C2 is received from an SeNB 10 (S8), a base station (TeNB) (40) of the CSG cell C2 transmits a handover response in accordance with a handover enabled/disabled state (S12). The handover response includes an identifier of the terminal (70) in the CSG cell C2. Upon receiving the response, the SeNB (10) notifies the identifier to the terminal (70) (S14). The TeNB (40) repeatedly transmits a dedicated signal containing a handover command via a dedicated channel set using the identifier at an interval shorter than a gap period (S18). Accordingly, whether or not access is permitted can be judged promptly and a smooth handover can be realized.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: July 7, 2020
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Hidenori Matsuo, Takahisa Aoyama, Hong Tat Toh, Hidetoshi Suzuki
  • Patent number: 10701708
    Abstract: The invention relates to methods for improving a scheduling request transmission between a UE and a base station. The transmission of the scheduling request is postponed, by implementing a threshold that the data in the transmission buffer has to reach, before a transmission of the scheduling request is triggered. In one variant, the data in the transmission buffer needs to reach a specific amount, to trigger a scheduling request. The invention refers to further improvements: the PDDCH monitoring time window is delayed after sending a scheduling request; the dedicated scheduling request resources of the PUCCH are prioritized differently such that low-priority scheduling requests are transmitted less often.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: June 30, 2020
    Assignee: Sun Patent Trust
    Inventors: Joachim Loehr, Takahisa Aoyama, Prateek Basu-Mallick, Takashi Tamura, Martin Feuersaenger
  • Publication number: 20200205191
    Abstract: A method and transmission apparatus transmit broadcast system information in a mobile communication system. Further, a method and mobile terminal receive the broadcast system information. An improved method for broadcasting broadcast system information maps different partitions of broadcast system information to a shared transport channel or a broadcast transport channel for transmission. The mapping may take into account parameters inherent to the mobile terminals to which the broadcast system information is to be transmitted and/or parameters inherent to the different partitions of broadcast system information.
    Type: Application
    Filed: March 3, 2020
    Publication date: June 25, 2020
    Inventors: Dieter PETERMANN, Takahisa AOYAMA, Hidetoshi SUZUKI
  • Publication number: 20200196292
    Abstract: Provided are a radio terminal device, a radio base station device, and a channel signal forming method which can prevent quality degradation of the downlink resource allocation information by reducing the frequency of the zero information addition process to the downlink resource allocation information when executing communication using an uplink unit band and multiple downlink unit bands correlated to the uplink unit band. A base station includes: a PDCCH generation unit which includes the uplink allocation information relating to the uplink unit band only in some of the channel signals formed for each of the downlink unit bands; and a padding unit which adds zero information to the downlink allocation information only in the selected some channel signals having the bandwidth of the corresponding downlink unit band smaller than that of the uplink unit band until the downlink allocation information size becomes equal to the uplink allocation information size.
    Type: Application
    Filed: February 27, 2020
    Publication date: June 18, 2020
    Inventors: Seigo Nakao, Akihiko Nishio, Daichi Imamura, Takahisa Aoyama
  • Publication number: 20200163030
    Abstract: The invention relates to methods for adjusting the transmit power utilized by a mobile terminal for uplink transmissions, and to methods for adjusting the transmit power used by a mobile terminal for one or more RACH procedures. The invention is also providing apparatus and system for performing these methods, and computer readable media the instructions of which cause the apparatus and system to perform the methods described herein. In order to allow for adjusting the transmit power of uplink transmissions on uplink component carriers, the invention suggests introducing a power scaling for uplink PRACH transmissions performing RACH procedures on an uplink component carrier. The power scaling is proposed on the basis of a prioritization among multiple uplink transmissions or on the basis of the uplink component carriers on which RACH procedures are performed.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Inventors: Martin Feuersaenger, Joachim Loehr, Takahisa Aoyama
  • Patent number: 10638379
    Abstract: When detecting occurrence of an event for transmitting a measurement report of a radio condition of a cell at a frequency set for a base station apparatus, to the base station apparatus (3) communicating with a terminal apparatus (2), the terminal apparatus (2) in a wireless communication system (1) creates a measurement report including information indicating radio conditions of cells at a frequency at which the event occurred and at another different frequency. The base station apparatus (3) controls whether or not to perform handover of the terminal apparatus (2) to another cell, on the basis of the measurement report transmitted from the terminal apparatus (2). Thereby, there is provided a wireless communication system in which a base station apparatus and the terminal apparatus are communicable with each other using multiple frequencies, the wireless communication system being capable of shortening time required for handover.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: April 28, 2020
    Assignee: Sun Patent Trust
    Inventors: Takashi Tamura, Takahisa Aoyama, Jun Hirano
  • Patent number: 10631282
    Abstract: Provided are a radio terminal device, a radio base station device, and a channel signal forming method which can prevent quality degradation of the downlink resource allocation information by reducing the frequency of the zero information addition process to the downlink resource allocation information when executing communication using an uplink unit band and multiple downlink unit bands correlated to the uplink unit band. A base station includes: a PDCCH generation unit which includes the uplink allocation information relating to the uplink unit band only in some of the channel signals formed for each of the downlink unit bands; and a padding unit which adds zero information to the downlink allocation information only in the selected some channel signals having the bandwidth of the corresponding downlink unit band smaller than that of the uplink unit band until the downlink allocation information size becomes equal to the uplink allocation information size.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: April 21, 2020
    Assignee: Sun Patent Trust
    Inventors: Seigo Nakao, Akihiko Nishio, Daichi Imamura, Takahisa Aoyama
  • Patent number: 10624120
    Abstract: A method and transmission apparatus transmit broadcast system information in a mobile communication system. Further, a method and mobile terminal receive the broadcast system information. An improved method for broadcasting broadcast system information maps different partitions of broadcast system information to a shared transport channel or a broadcast transport channel for transmission. The mapping may take into account parameters inherent to the mobile terminals to which the broadcast system information is to be transmitted and/or parameters inherent to the different partitions of broadcast system information.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: April 14, 2020
    Assignee: Optis Wireless Technology, LLC
    Inventors: Dieter Petermann, Takahisa Aoyama, Hidetoshi Suzuki
  • Publication number: 20200100274
    Abstract: A base station is disclosed, including an information size adjusting section configured to adjust a size of control information based on a first basic information size of control information mapped on a user equipment (UE) specific search space in a first component carrier. The base station also includes a transmitter configured to transmit the control information mapped on the UE specific search space. A first determination method for determining the first basic information size is different from a second determination method for determining a second basic information size of control information mapped on a common search space in the first component carrier. The first determination method for determining the first basic information size is different from a third determination method for determining a third basic information size of control information mapped on a search space in a second component carrier that is different from the first component carrier.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Inventors: Seigo Nakao, Daichi Imamura, Takahisa Aoyama
  • Patent number: 10588093
    Abstract: The invention relates to methods for adjusting the transmit power utilized by a mobile terminal for uplink transmissions, and to methods for adjusting the transmit power used by a mobile terminal for one or more RACH procedures. The invention is also providing apparatus and system for performing these methods, and computer readable media the instructions of which cause the apparatus and system to perform the methods described herein. In order to allow for adjusting the transmit power of uplink transmissions on uplink component carriers, the invention suggests introducing a power scaling for uplink PRACH transmissions performing RACH procedures on an uplink component carrier. The power scaling is proposed on the basis of a prioritization among multiple uplink transmissions or on the basis of the uplink component carriers on which RACH procedures are performed.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: March 10, 2020
    Assignee: Sun Patent Trust
    Inventors: Martin Feuersaenger, Joachim Loehr, Takahisa Aoyama
  • Publication number: 20200059846
    Abstract: When a handover request for performing a handover of a terminal (70) from a macro cell C1 to a CSG cell C2 is received from an SeNB 10 (S8), a base station (TeNB) (40) of the CSG cell C2 transmits a handover response in accordance with a handover enabled/disabled state (S12). The handover response includes an identifier of the terminal (70) in the CSG cell C2. Upon receiving the response, the SeNB (10) notifies the identifier to the terminal (70) (S14). The TeNB (40) repeatedly transmits a dedicated signal containing a handover command via a dedicated channel set using the identifier at an interval shorter than a gap period (S18). Accordingly, whether or not access is permitted can be judged promptly and a smooth handover can be realized.
    Type: Application
    Filed: October 17, 2019
    Publication date: February 20, 2020
    Inventors: Hidenori Matsuo, Takahisa Aoyama, Hong Tat Toh, Hidetoshi Suzuki
  • Publication number: 20200015110
    Abstract: In a wireless communication terminal in a wireless communication system for performing a control not to transmit signals, or to transmit signals with a reduction in a transmission power by a part of radio resources for a downlink signal in a cell provided by a base station, the terminal receives control information in generating a report related to a measurement result of the cell provided by the base station, monitors a state of a radio link with an own cell, and performs measurement on reception of the downlink signal. If an instruction for restricting the measurement to a part of the radio resources is included in the control information from the base station after the radio link failure occurs, the terminal generates and transmits a radio link failure report including the measurement result in the radio resources as instructed when the radio link failure occurs.
    Type: Application
    Filed: September 19, 2019
    Publication date: January 9, 2020
    Inventors: Takashi Tamura, Takahisa Aoyama, Hidenori Matsuo
  • Patent number: 10531482
    Abstract: A base station is disclosed, including an information size adjusting section configured to adjust a size of control information based on a first basic information size of control information mapped on a user equipment (UE) specific search space in a first component carrier. The base station also includes a transmitter configured to transmit the control information mapped on the UE specific search space. A first determination method for determining the first basic information size is different from a second determination method for determining a second basic information size of control information mapped on a common search space in the first component carrier. The first determination method for determining the first basic information size is different from a third determination method for determining a third basic information size of control information mapped on a search space in a second component carrier that is different from the first component carrier.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: January 7, 2020
    Assignee: Sun Patent Trust
    Inventors: Seigo Nakao, Daichi Imamura, Takahisa Aoyama
  • Patent number: 10492117
    Abstract: When a handover request for performing a handover of a terminal (70) from a macro cell C1 to a CSG cell C2 is received from an SeNB 10 (S8), a base station (TeNB) (40) of the CSG cell C2 transmits a handover response in accordance with a handover enabled/disabled state (S12). The handover response includes an identifier of the terminal (70) in the CSG cell C2. Upon receiving the response, the SeNB (10) notifies the identifier to the terminal (70) (S14). The TeNB (40) repeatedly transmits a dedicated signal containing a handover command via a dedicated channel set using the identifier at an interval shorter than a gap period (S18). Accordingly, whether or not access is permitted can be judged promptly and a smooth handover can be realized.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: November 26, 2019
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Hidenori Matsuo, Takahisa Aoyama, Hong Tat Toh, Hidetoshi Suzuki
  • Patent number: 10470071
    Abstract: In a wireless communication terminal in a wireless communication system for performing a control not to transmit signals, or to transmit signals with a reduction in a transmission power by a part of radio resources for a downlink signal in a cell provided by a base station, the terminal receives control information in generating a report related to a measurement result of the cell provided by the base station, monitors a state of a radio link with an own cell, and performs measurement on reception of the downlink signal. If an instruction for restricting the measurement to a part of the radio resources is included in the control information from the base station after the radio link failure occurs, the terminal generates and transmits a radio link failure report including the measurement result in the radio resources as instructed when the radio link failure occurs.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: November 5, 2019
    Assignee: Sun Patent Trust
    Inventors: Takashi Tamura, Takahisa Aoyama, Hidenori Matsuo
  • Publication number: 20190253983
    Abstract: The invention relates to methods for adjusting the transmit power utilized by a mobile terminal for uplink transmissions, and to methods for adjusting the transmit power used by a mobile terminal for one or more RACH procedures. The invention is also providing apparatus and system for performing these methods, and computer readable media the instructions of which cause the apparatus and system to perform the methods described herein. In order to allow for adjusting the transmit power of uplink transmissions on uplink component carriers, the invention suggests introducing a power scaling for uplink PRACH transmissions performing RACH procedures on an uplink component carrier. The power scaling is proposed on the basis of a prioritization among multiple uplink transmissions or on the basis of the uplink component carriers on which RACH procedures are performed.
    Type: Application
    Filed: April 22, 2019
    Publication date: August 15, 2019
    Inventors: Martin Feuersaenger, Joachim Loehr, Takahisa Aoyama