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).

  • Patent number: 9736749
    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: July 29, 2016
    Date of Patent: August 15, 2017
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Hidenori Matsuo, Takahisa Aoyama, Hong Tat Toh, Hidetoshi Suzuki
  • Patent number: 9725582
    Abstract: The present invention aims to provide a fluororesin composition for a molded product that is excellent in tensile strength and flex resistance. The present invention relates to a fluororesin composition that contains a fluororesin and a fluorinated nanodiamond. The amount of the fluorinated nanodiamond is 0.001 to 5% by mass based on the fluororesin.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: August 8, 2017
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Toshiyuki Fukushima, Takeshi Shimono, Tomohiro Isogai, Takahisa Aoyama, Fumihiko Yamaguchi, Tetsuo Shimizu
  • Patent number: 9723618
    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: February 6, 2013
    Date of Patent: August 1, 2017
    Assignee: Sun Patent Trust
    Inventors: Joachim Loehr, Takahisa Aoyama, Prateek Basu-Mallick, Takashi Tamura, Martin Feuersaenger
  • Patent number: 9713162
    Abstract: A communication terminal adjusts the transmission timing of data transmitted to a base station so that the base station can receive the data within a predetermined delay time. The communication terminal includes a reception section 701 for receiving priority of MAC control information transmitted from the base station, a priority control section 703 for defining the relationship between the priority of the MAC control information and priority assigned to DRB and SRB, and a transmission message generation section 704 for controlling so as to transmit information having a high priority early in accordance with the relationship between the priorities defined by the priority control section 703. According to the communication terminal, a comparison is made between the priority of the MAC control information and the priority assigned to the DRB and the SRB, whereby it is made possible to control what information is to be transmitted as desired.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: July 18, 2017
    Assignee: Optis Wireless Technology, LLC
    Inventors: Takahisa Aoyama, Joachim Loehr
  • Patent number: 9713168
    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: May 26, 2015
    Date of Patent: July 18, 2017
    Assignee: Optis Wireless Technology, LLC
    Inventors: Dieter Petermann, Takahisa Aoyama, Hidetoshi Suzuki
  • Patent number: 9698957
    Abstract: A wireless communication device is provided with: a means that, when traffic of said device is greater than another device in a state in which the device is wirelessly connected to a terminal without using CoMP, generates information with which a parameter is altered so that a communication area in which CoMP is used is expanded at the wireless communication device side, said parameter relating to a condition by which the terminal reports a result of a communication measurement between the device and the other device; and a means that carries out an adjustment so that a proportion of resources for communication using CoMP is increased in accordance with the traffic situations of the device and the other device.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: July 4, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Hidenori Matsuo, Takahisa Aoyama, Takashi Tamura
  • Publication number: 20170150406
    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: February 7, 2017
    Publication date: May 25, 2017
    Inventors: Takashi Tamura, Takahisa Aoyama, Jun Hirano
  • Publication number: 20170126373
    Abstract: A communication terminal is capable of simultaneously communicating through a plurality of carriers by carrier aggregation, and the communication terminal comprises: a quality measurement unit for measuring the reception quality of a radio wave transmitted through a plurality of carriers from a base station of a connected cell to obtain a measured value; a primary carrier storage unit storing information specifying a primary carrier chosen from the plurality of carriers; a comparator for comparing a measured value of the primary carrier measured by the quality measurement unit to a threshold value; and a cell search unit for searching for another cell when the measured value of the primary carrier is less than or equal to the threshold value. Consequently, a search threshold value for carrier aggregation can be appropriately determined to perform a cell search and a quality measurement.
    Type: Application
    Filed: January 17, 2017
    Publication date: May 4, 2017
    Inventors: Takahisa Aoyama, Jun Hirano, Takashi Tamura
  • Patent number: 9642104
    Abstract: Provided are a base station, a terminal, a band allocation method, and a downlink data communication method in which a mapping method for synchronization signals and report signals is implemented with high resource usage efficiency when a first system in which an independent single communication is allocated to a unit band co-exists with a second system in which a plurality of unit bands can be allocated to a single communication. In a base station, an OFDM signal generation unit maps primary synchronization channel (P-SCH), secondary synchronization channel (S-SCH), primary broadcast channel (P-BCH), and dynamic broadcast channel (D-BCH), which can be decoded by both an LTE terminal and an LTE+ terminal, to some of a plurality of unit bands. The OFDM signal generation unit also maps D-BCH+, which can be decoded only by an LTE+ terminal, to all of the plurality of unit bands to produce a multiplexed transmission signal.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: May 2, 2017
    Assignee: Sun Patent Trust
    Inventors: Seigo Nakao, Hidetoshi Suzuki, Akihiko Nishio, Takahisa Aoyama, Katsuhiko Hiramatsu
  • Patent number: 9603076
    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: April 25, 2016
    Date of Patent: March 21, 2017
    Assignee: Sun Patent Trust
    Inventors: Takashi Tamura, Takahisa Aoyama, Jun Hirano
  • Patent number: 9596631
    Abstract: A communication terminal is capable of simultaneously communicating through a plurality of carriers by carrier aggregation, and the communication terminal comprises: a quality measurement unit for measuring the reception quality of a radio wave transmitted through a plurality of carriers from a base station of a connected cell to obtain a measured value; a primary carrier storage unit storing information specifying a primary carrier chosen from the plurality of carriers; a comparator for comparing a measured value of the primary carrier measured by the quality measurement unit to a threshold value; and a cell search unit for searching for another cell when the measured value of the primary carrier is less than or equal to the threshold value. Consequently, a search threshold value for carrier aggregation can be appropriately determined to perform a cell search and a quality measurement.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: March 14, 2017
    Assignee: Sun Patent Trust
    Inventors: Takahisa Aoyama, Jun Hirano, Takashi Tamura
  • Publication number: 20160353393
    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: August 9, 2016
    Publication date: December 1, 2016
    Inventors: Martin Feuersaenger, Joachim Loehr, Takahisa Aoyama
  • Publication number: 20160345232
    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: July 29, 2016
    Publication date: November 24, 2016
    Inventors: Hidenori Matsuo, Takahisa Aoyama, HongTat Toh, Hidetoshi Suzuki
  • Publication number: 20160322128
    Abstract: A heat-resistant electric wire including a core wire and a coating that covers the core wire. The coating is formed from a modified fluorine-containing copolymer that is obtained by irradiating a copolymer with radiation at an exposure of 250 kGy or lower at a temperature of not higher than the melting point of the copolymer. The copolymer is at least one copolymer selected from a copolymer including a tetrafluoroethylene unit and a perfluoro(alkyl vinyl ether) unit and a copolymer including a tetrafluoroethylene unit and a hexafluoropropylene unit.
    Type: Application
    Filed: December 19, 2014
    Publication date: November 3, 2016
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hitoshi IMAMURA, Takahisa AOYAMA, Hideki KONO, Tatsuya FUNAOKA, Hirokazu ITOU, Junya IIDA
  • Publication number: 20160319089
    Abstract: A modified fluorine-containing copolymer obtained by irradiating a copolymer with radiation at a temperature of not higher than the melting point of the copolymer. The copolymer includes at least one copolymer selected from a copolymer including a tetrafluoroethylene unit and a perfluoro(alkyl vinyl ether) unit and a copolymer including a tetrafluoroethylene unit and a hexafluoropropylene unit, and has 10 to 10000 functional groups in total per 106 carbon atoms.
    Type: Application
    Filed: December 19, 2014
    Publication date: November 3, 2016
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hitoshi IMAMURA, Takahisa AOYAMA, Hideki KONO, Tatsuya FUNAOKA, Hirokazu ITOU
  • Publication number: 20160309432
    Abstract: Provided are a base station, a terminal, a band allocation method, and a downlink data communication method in which a mapping method for synchronization signals and report signals is implemented with high resource usage efficiency when a first system in which an independent single communication is allocated to a unit band co-exists with a second system in which a plurality of unit bands can be allocated to a single communication. In a base station, an OFDM signal generation unit maps primary synchronization channel (P-SCH), secondary synchronization channel (S-SCH), primary broadcast channel (P-BCH), and dynamic broadcast channel (D-BCH), which can be decoded by both an LTE terminal and an LTE+ terminal, to some of a plurality of unit bands. The OFDM signal generation unit also maps D-BCH+, which can be decoded only by an LTE+ terminal, to all of the plurality of unit bands to produce a multiplexed transmission signal.
    Type: Application
    Filed: May 26, 2016
    Publication date: October 20, 2016
    Inventors: Seigo Nakao, Hidetoshi Suzuki, Akihiko Nishio, Takahisa Aoyama, Katsuhiko Hiramatsu
  • Publication number: 20160302129
    Abstract: The invention relates methods for time aligning uplink transmissions by a mobile terminal in a mobile communication system, and to methods for performing a handover of a mobile terminal to a target aggregation access point. 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 aligning the timing of uplink transmissions on uplink component carriers, where different propagation delays are imposed on the transmissions on the uplink component carriers, the inventions suggests to time align the uplink component carriers based on a reference time alignment of a reference cell and a reception time difference or propagation delay difference between the downlink transmissions in the reference cell and the other radio cells, the uplink component carriers of which need to be time aligned.
    Type: Application
    Filed: June 20, 2016
    Publication date: October 13, 2016
    Inventors: Joachim Löhr, Christian Wengerter, Martin Feuersänger, Takashi Tamura, Hidetoshi Suzuki, Takahisa Aoyama
  • Patent number: 9439123
    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 27, 2013
    Date of Patent: September 6, 2016
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Hidenori Matsuo, Takahisa Aoyama, Hong Tat Toh, Hidetoshi Suzuki
  • Patent number: 9439217
    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: March 13, 2015
    Date of Patent: September 6, 2016
    Assignee: Sun Patent Trust
    Inventors: Martin Feuersaenger, Joachim Loehr, Takahisa Aoyama
  • Patent number: 9432893
    Abstract: A terminal apparatus (1) which is a radio transmitting/receiving apparatus receives, from a femto cell base station (home eNB), a pilot channel signal for reception quality measurement and a synchronization channel signal for synchronization. The terminal apparatus (1) has a whitelist stored therein indicative of an accessible femto cell, and determines whether or not a CSG cell of handover destination is accessible based on a PCI of the CSG cell acquired from the synchronization channel and the whitelist. The terminal apparatus (1) then adds the PCI and a CGI to a measurement report for reception quality, and transmits the measurement report to a macro eNB (base station apparatus (2)). In this way, it is possible to suppress wasteful signaling and prevent unnecessary resources from being reserved even when two or more CSG cells that use the same PCI are present in the macro cell.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: August 30, 2016
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Chie Ishida, Takahisa Aoyama