Patents by Inventor Takayuki Sotoyama

Takayuki Sotoyama 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: 20210036435
    Abstract: A communication apparatus includes: an antenna including a base having a dome shape, a first antenna element disposed in a first region including a zenith of the base, and one or more second antenna elements disposed in a second region surrounding the first region; and beam forming circuitry that controls, based on position information of a target satellite to communicate with, a beam formation of the first antenna element and the one or more second antenna elements.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 4, 2021
    Inventors: Naoki ADACHI, Takayuki SOTOYAMA
  • Publication number: 20200400776
    Abstract: A communication device includes: receiving circuitry which, in operation, receives a radio signal transmitted by a mobile station; and processing circuitry which, in operation, estimates a position of the mobile station based on a signal waveform profile including information about at least two of a direction of arrival, an arrival time, and a received power of the radio signal. A position estimating method includes: receiving a radio signal transmitted by a mobile station; and estimating a position of the mobile station based on a signal waveform profile including information about at least two of a direction of arrival, an arrival time, and a received power of the radio signal. A communication system includes: a mobile station; and a communication device.
    Type: Application
    Filed: September 3, 2020
    Publication date: December 24, 2020
    Inventors: Takayuki SOTOYAMA, Richol KU, Mikihiro OUCHI, Ryuji MUTA
  • Publication number: 20200389851
    Abstract: The communication apparatus installed in an aircraft can communicate wirelessly with another communication apparatus. The communication apparatus comprises a controller (110) and a transmitter (106). The controller (110) acquires altitude information of the aircraft and determines transmission power according to the altitude information. The transmitter (106) transmits transmission data to another communication apparatus using the determined transmission power.
    Type: Application
    Filed: February 8, 2018
    Publication date: December 10, 2020
    Inventors: Shutai OKAMURA, Takahiro YAMAGUCHI, Takayuki SOTOYAMA, Katsuhiko HIRAMATSU
  • Publication number: 20200366365
    Abstract: A signal processing device includes: a transmission path estimator that estimates a first transmission path characteristic of a transmission signal using a vertical signal out of vertical and horizontal signals resulting from being received by a vertical polarization antenna and a horizontal polarization antenna; a transmission path estimator that estimates a second transmission path characteristic of the transmission signal using the horizontal signal; a weight calculator that calculates a first weight for the vertical signal and a second weight for the horizontal signal, using the first transmission path characteristic and the second transmission path characteristic; and a weighting applier that applies weighted summation to the vertical signal and the horizontal signal using the first weight and the second weight.
    Type: Application
    Filed: July 30, 2020
    Publication date: November 19, 2020
    Inventors: Mikihiro OUCHI, Tomohiro KIMURA, Takayuki SOTOYAMA, Naoki ADACHI, Naoya SHIBAIKE, Shutai OKAMURA
  • Publication number: 20200229203
    Abstract: A transmitter communicates with a receiver via a satellite station that transmits a signal by a multibeam system. The transmitter includes a scheduler and a transmission unit. The scheduler performs scheduling to determine a time and a wireless channel to transmit data addressed to the receiver based on an area where the receiver is present. The transmission unit transmits a signal of the data addressed to the receiver to the satellite station by the wireless channel determined by the scheduler and at the time determined by the scheduler. The signal transmitted from the transmission unit by an i-th (i is an integer of 1 or larger) wireless channel is transmitted from the satellite station to the receiver by an i-th beam. Frequencies of signals transmitted from the satellite station by respective beams are same.
    Type: Application
    Filed: June 8, 2018
    Publication date: July 16, 2020
    Inventors: Katsuhiko HIRAMATSU, Takayuki SOTOYAMA, Shutai OKAMURA
  • Patent number: 10574376
    Abstract: A transmission device includes: a modulator that selects an Orbital Angular Momentum (OAM) propagation mode among N (N is an integer equal to or greater than 2) OAM propagation modes in accordance with a value of bit data to be transmitted; and a transmitter that transmits a signal of the OAM propagation mode selected by the modulator.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: February 25, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Naoki Adachi, Tomohiro Kimura, Takayuki Sotoyama, Kazuaki Takahashi, Naganori Shirakata, Koji Takinami, Takenori Sakamoto
  • Patent number: 10305560
    Abstract: A transmission device transmits multiplexed signals obtained by multiplexing signals of N systems corresponding to N Orbital Angular Momentum (OAM) propagation modes. The transmission device includes: an array antenna that includes M antenna elements disposed in a lattice on a plane when viewed from the plane; and a transmitter that multiplies signals obtained by branching each of the signals of N systems into M signals by weighting coefficients of phase shift angles based on angles of the respective M antenna elements with respect to a reference axis passing through a reference point viewed from the reference point on the plane according to the OAM propagation modes, multiplexes the signals of N systems multiplied by the weighting coefficients of the phase shift angles, and transmits signals obtained by the multiplexing from the M antenna elements. M and N are integers equal to or larger than 2.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: May 28, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Naoki Adachi, Tomohiro Kimura, Takayuki Sotoyama, Kazuaki Takahashi, Naganori Shirakata, Koji Takinami, Takenori Sakamoto
  • Publication number: 20190028165
    Abstract: A transmission device transmits multiplexed signals obtained by multiplexing signals of N systems corresponding to N Orbital Angular Momentum (OAM) propagation modes. The transmission device includes: an array antenna that includes M antenna elements disposed in a lattice on a plane when viewed from the plane; and a transmitter that multiplies signals obtained by branching each of the signals of N systems into M signals by weighting coefficients of phase shift angles based on angles of the respective M antenna elements with respect to a reference axis passing through a reference point viewed from the reference point on the plane according to the OAM propagation modes, multiplexes the signals of N systems multiplied by the weighting coefficients of the phase shift angles, and transmits signals obtained by the multiplexing from the M antenna elements. M and N are integers equal to or larger than 2.
    Type: Application
    Filed: June 14, 2016
    Publication date: January 24, 2019
    Inventors: Naoki ADACHI, Tomohiro KIMURA, Takayuki SOTOYAMA, Kazuaki TAKAHASHI, Naganori SHIRAKATA, Koji TAKINAMI, Takenori SAKAMOTO
  • Publication number: 20190020434
    Abstract: A transmission device includes: a modulator that selects an Orbital Angular Momentum (OAM) propagation mode among N (N is an integer equal to or greater than 2) OAM propagation modes in accordance with a value of bit data to be transmitted; and a transmitter that transmits a signal of the OAM propagation mode selected by the modulator.
    Type: Application
    Filed: June 13, 2016
    Publication date: January 17, 2019
    Inventors: Naoki ADACHI, Tomohiro KIMURA, Takayuki SOTOYAMA, Kazuaki TAKAHASHI, Naganori SHIRAKATA, Koji TAKINAMI, Takenori SAKAMOTO
  • Patent number: 10080247
    Abstract: Even when a terminal goes out of a macro cell, data communication in the small cell can be caused to continue while the mobile management in a macro cell is continued. When a first determination unit (205) determines that a terminal exists outside the cell of a base station (200), an existence recognition packet transmission/reception unit (207) transmits a recognition packet, which is used for recognition, to the terminal via a small cell, and thereafter receives a response to the recognition packet from the terminal via the small cell. When a second determination unit (206) determines, because of the reception of the response, that the terminal exits inside the cell of the base station (200), a radio resource control unit (204) causes the connection of the control plane between the terminal and the base station (200) to continue.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: September 18, 2018
    Assignee: PANASONIC CORPORATION
    Inventors: Toshiaki Sakurai, Takayuki Sotoyama
  • Patent number: 9980206
    Abstract: In order to shorten the time in which an initial connection is established when switching directivity and then performing the initial connection, a frame timing control unit sets, until detection of an RACH signal, a transmission timing of a transmission frame for transmitting a search signal and a broadcast signal and also sets a reception-start timing for starting the reception of the corresponding RACH signal. A search/broadcast signal generation unit generates the broadcast signal and the search signal including reception-timing information. A beam directivity control unit sets, for a predetermined time starting from the reception-start timing, a directivity pattern such that the directivity is in the same direction as the directivity pattern for the corresponding transmission-timing information, whereby the beam directivity control unit controls a beam directivity operation unit.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: May 22, 2018
    Assignee: PANASONIC CORPORATION
    Inventors: Shozo Okasaka, Takayuki Sotoyama, Seigo Nakao
  • Publication number: 20170111850
    Abstract: In order to shorten the time in which an initial connection is established when switching directivity and then performing the initial connection, a frame timing control unit sets, until detection of an RACH signal, a transmission timing of a transmission frame for transmitting a search signal and a broadcast signal and also sets a reception-start timing for starting the reception of the corresponding RACH signal. A search/broadcast signal generation unit generates the broadcast signal and the search signal including reception-timing information. A beam directivity control unit sets, for a predetermined time starting from the reception-start timing, a directivity pattern such that the directivity is in the same direction as the directivity pattern for the corresponding transmission-timing information, whereby the beam directivity control unit controls a beam directivity operation unit.
    Type: Application
    Filed: May 30, 2014
    Publication date: April 20, 2017
    Inventors: Shozo OKASAKA, Takayuki SOTOYAMA, Seigo NAKAO
  • Publication number: 20170099696
    Abstract: Even when a terminal goes out of a macro cell, data communication in the small cell can be caused to continue while the mobile management in a macro cell is continued. When a first determination unit (205) determines that a terminal exists outside the cell of a base station (200), an existence recognition packet transmission/reception unit (207) transmits a recognition packet, which is used for recognition, to the terminal via a small cell, and thereafter receives a response to the recognition packet from the terminal via the small cell. When a second determination unit (206) determines, because of the reception of the response, that the terminal exits inside the cell of the base station (200), a radio resource control unit (204) causes the connection of the control plane between the terminal and the base station (200) to continue.
    Type: Application
    Filed: May 30, 2014
    Publication date: April 6, 2017
    Inventors: Toshiaki Sakurai, Takayuki Sotoyama
  • Publication number: 20120282855
    Abstract: A first conversion unit (201) converts a signal from a time domain to a frequency domain. A signal extraction unit (202) extracts common channel information included in the signal which has been converted by the first conversion unit (201). A signal substitution unit (207) restores the common channel information which has been extracted by the signal extraction unit (202). An addition unit (208) substitutes the common channel information which has been restored by the signal substitution unit (207) for the common channel information included in the signal which has been converted by the first conversion unit (201). A second conversion unit (209) converts the signal including the common channel information substituted, which has been converted by the first conversion unit (201), from the frequency domain to the time domain.
    Type: Application
    Filed: January 13, 2011
    Publication date: November 8, 2012
    Applicant: Panasonic Corporation
    Inventors: Richol Ku, Yuta Seki, Takayuki Sotoyama, Yukinori Amao, Tomoaki Shimizu, Yasuo Yokouchi, Jun Imai
  • Publication number: 20120213254
    Abstract: Provided is a communication capacity evaluating apparatus whereby the communication capacity can be grasped and the necessity of changing the content of a dead spot measure after the placement of a relay apparatus can be eliminated. In the communication capacity evaluating apparatus, a system information analyzing unit (121) acquires, from a received signal, used-band information of the communication using a MIMO mode. An S/N calculating unit (122) analyzes the received signal to determine a signal-to-noise ratio. A channel estimating unit (123) analyzes the received signal to determine a channel matrix. A throughput limit calculating unit (124) calculates the limit value of the communication capacity on the basis of the used-band information, information about the number of transmission antennas of a base station (180), information about the number of reception antennas of a radio relay apparatus (100) stored in advance, the signal-to-noise ratio and the channel matrix.
    Type: Application
    Filed: October 29, 2010
    Publication date: August 23, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Yasuo Yokouchi, Jun Imai, Tomoaki Shimizu, Yukinori Amao, Richol Ku, Takayuki Sotoyama
  • Publication number: 20120178361
    Abstract: Provided are a fading signal forming device, a channel signal transmission device, and a fading signal forming method, by which a complicated time-space can be constructed with a simple structure. In the fading signal forming device (200), each signal forming base unit (220-1 to 4) respectively inputs a channel signal, duplicates the channel signal, and performs adjustment to the respective duplicated signal, so that a plurality of fading signals are formed. Specifically, phase adjustment units (231-1, 2) provided on the signal forming base unit (220) perform phase rotation of the duplication signals at different rotation amounts corresponding to the relative position relationship between the main antenna and the sub-antenna, to thereby form a spatial fading signal.
    Type: Application
    Filed: September 22, 2010
    Publication date: July 12, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Toshiteru Hayashi, Takayuki Sotoyama
  • Publication number: 20110306302
    Abstract: A reception apparatus and a reception method improving the effect of interference suppression and reducing interference to the side subject to interference. A satellite signal demodulation unit (201) demodulates and performs a CRC check on a received satellite signal, while a satellite signal modulation unit (202) modulates the demodulated results outputted from the satellite signal demodulation unit (201). An adder (203) subtracts an output signal of the satellite signal modulation unit(202) from the received satellite signal, and an output switching unit (204) feeds back the signal outputted from the adder (203) to an IMT transmission apparatus (100) in cases when the CRC check result outputted from the satellite signal demodulation unit (201) is “pass”. Further, when the CRC check result is “fail”, the output switching unit (204) feeds back the received satellite signal to the IMT transmission apparatus (100).
    Type: Application
    Filed: October 28, 2009
    Publication date: December 15, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Tomohiro Sugawara, Takayuki Sotoyama
  • Publication number: 20110128905
    Abstract: A relay system capable of flexibly being constructed and a wireless communication system capable of more stable communication by means of the relay system. A mobile station (200) which is a master terminal constituting the relay system transmits a synchronized signal and mobile stations (300) which are slave terminals receive the synchronized signal. The mobile station (200) and the mobile stations (300) transmit data transmitted from a base station device (100) to a wireless LAN terminal (400) in mutual transmission timing on the basis of the synchronized signal. With this, the relay system can be flexibly constructed of a plurality of mobile stations, thus providing the increased possibility to avoid the state where communication cannot be performed because of the number of RF resources of a relay terminal and the usage state as before. As a result, the relay system allows a wireless communication system capable of more stable communication to be realized.
    Type: Application
    Filed: March 14, 2008
    Publication date: June 2, 2011
    Applicant: Panasonic Corporation
    Inventors: Ryoko Kawauchi, Takayuki Sotoyama