Patents by Inventor Masayuki Ariyoshi

Masayuki Ariyoshi 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: 10326496
    Abstract: A composite cable (4) houses a plurality of leaky coaxial cables having mutually different radiation characteristics. The leaky coaxial cable (2a, 2b) includes therein an inner conductor and an outer conductor, and has a plurality of leakage slots. The plurality of leakage slots have different slot periods relative to the axial direction or arranged in different slot patterns. The digital wireless communication device feeds a high-frequency signal from an end of the composite cable (4) and performs MIMO (multiple-input multiple-output) communication.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: June 18, 2019
    Assignees: Advanced Telecommunications Research Institute International, Fujikura Ltd.
    Inventors: Satoshi Tsukamoto, Takahiro Maeda, Yafei Hou, Masayuki Ariyoshi, Kiyoshi Kobayashi, Fumio Suzuki, Atsuhiko Niwa
  • Publication number: 20190037490
    Abstract: Because it is not possible to sufficiently reduce the number base stations that start uselessly in spite of being in a low traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently. A base station starts transmission of a control signal with predetermined power when communication between another base station and a mobile station is started and a first predetermined condition is satisfied.
    Type: Application
    Filed: September 28, 2018
    Publication date: January 31, 2019
    Applicant: NEC CORPORATION
    Inventors: Toshifumi NAKAMURA, Kojiro HAMABE, Masayuki ARIYOSHI, Kazushi MURAOKA
  • Patent number: 10123267
    Abstract: Because it is not possible to sufficiently reduce the number base stations that start uselessly in spite of being in a low traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently. A base station starts transmission of a control signal with predetermined power when communication between another base station and a mobile station is started and a first predetermined condition is satisfied.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: November 6, 2018
    Assignee: NEC CORPORATION
    Inventors: Toshifumi Nakamura, Kojiro Hamabe, Masayuki Ariyoshi, Kazushi Muraoka
  • Publication number: 20180145728
    Abstract: A composite cable (4) houses a plurality of leaky coaxial cables having mutually different radiation characteristics. The leaky coaxial cable (2a, 2b) includes therein an inner conductor and an outer conductor, and has a plurality of leakage slots. The plurality of leakage slots have different slot periods relative to the axial direction or arranged in different slot patterns. The digital wireless communication device feeds a high-frequency signal from an end of the composite cable (4) and performs MIMO (multiple-input multiple-output) communication.
    Type: Application
    Filed: September 3, 2015
    Publication date: May 24, 2018
    Applicants: ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTERNATIONAL, FUJIKURA LTD.
    Inventors: Satoshi TSUKAMOTO, Takahiro MAEDA, Yafei HOU, Masayuki ARIYOSHI, Kiyoshi KOBAYASHI, Fumio SUZUKI, Atsuhiko NIWA
  • Publication number: 20170303193
    Abstract: Because it is not possible to sufficiently reduce the number base stations that start uselessly in spite of being in a low traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently. A base station starts transmission of a control signal with predetermined power when communication between another base station and a mobile station is started and a first predetermined condition is satisfied.
    Type: Application
    Filed: May 3, 2017
    Publication date: October 19, 2017
    Applicant: NEC CORPORATION
    Inventors: Toshifumi NAKAMURA, Kojiro HAMABE, Masayuki ARIYOSHI, Kazushi MURAOKA
  • Patent number: 9693301
    Abstract: Because it is not possible to sufficiently reduce the number base stations that start uselessly in spite of being in a low traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently. A base station starts transmission of a control signal with predetermined power when communication between another base station and a mobile station is started and a first predetermined condition is satisfied.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: June 27, 2017
    Assignee: NEC CORPORATION
    Inventors: Toshifumi Nakamura, Kojiro Hamabe, Masayuki Ariyoshi, Kazushi Muraoka
  • Publication number: 20160165535
    Abstract: Because it is not possible to sufficiently reduce the number base stations that start uselessly in spite of being in a low traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently. A base station starts transmission of a control signal with predetermined power when communication between another base station and a mobile station is started and a first predetermined condition is satisfied.
    Type: Application
    Filed: February 11, 2016
    Publication date: June 9, 2016
    Applicant: NEC CORPORATION
    Inventors: Toshifumi NAKAMURA, Kojiro HAMABE, Masayuki ARIYOSHI, Kazushi MURAOKA
  • Publication number: 20160156716
    Abstract: Provided is an information management device including: a communication information obtaining unit configured to obtain communication information about a communication state in an internal network inside a building; and an update determination unit configured to determine a start of updating process by an information updating unit, based on the communication information obtained by the communication information obtaining unit, wherein the information updating unit obtains information from an external network outside the building and performs the updating process for storing the obtained information as local information into a storage device which is accessible, not via the external network, by a terminal device connected to the internal network.
    Type: Application
    Filed: November 14, 2014
    Publication date: June 2, 2016
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kenichi MURAKAMI, Yoji OKADA, Yoshizo TANAKA, Takashi YAMAMOTO, Hirotsugu YAMAMOTO, Kiyoshi KOBAYASHI, Kazuto YANO, Masayuki ARIYOSHI, Tomohiro MIYASAKA, Mariko SEKIGUCHI, Yafei HOU
  • Patent number: 9313750
    Abstract: A frequency management method and device as well as a wireless system are provided by which acceptable transmit power is efficiently determined for transmitting stations in a system on the interfering side, neither with concentration of processing load on some part nor with redundant processing. When a frequency management apparatus (50_1) receives a notice regarding a change in the state of frequency use from a radio station (20_1) under its own management (S101), the frequency management apparatus (50_1) sets acceptable transmit power for radio stations (20_1, 20_2) under its own management and radio stations (20_3, 20_4) managed by another frequency management apparatus (50_2), based on the notified change in the state of frequency (S103, S104).
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: April 12, 2016
    Assignee: NEC Corporation
    Inventors: Kazushi Muraoka, Hiroto Sugahara, Kojiro Hamabe, Masayuki Ariyoshi
  • Patent number: 9301166
    Abstract: Because it is not possible to sufficiently reduce the number base stations that start uselessly in spite of being in a low traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently. A base station starts transmission of a control signal with predetermined power when communication between another base station and a mobile station is started and a first predetermined condition is satisfied.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: March 29, 2016
    Assignee: NEC CORPORATION
    Inventors: Toshifumi Nakamura, Kojiro Hamabe, Masayuki Ariyoshi, Kazushi Muraoka
  • Patent number: 9155099
    Abstract: [Problems] Because it is not possible to reduce sufficiently the number of base stations that starts uselessly in spite of being in light traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently. [Measures] A base station receives a transmission signal from a mobile station to other base station, and starts transmission of a control signal with predetermined power depending on a reception condition of the transmission signal.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: October 6, 2015
    Assignee: NEC CORPORATION
    Inventors: Toshifumi Nakamura, Kojiro Hamabe, Masayuki Ariyoshi, Kazushi Muraoka
  • Patent number: 9049603
    Abstract: [Problem] To provide a wireless station, a determination apparatus, a wireless communication system, a determination method, and a storage medium which can carry out appropriate interference causing control in a secondary system adaptively to an actual environment with no change in a configuration of a primary system. [Means to solve the problem] A wireless station includes a determination means to determine at least one monitoring station measuring a wireless signal, which is transmitted by the wireless station and which causes interference to another system, out of plural wireless stations of a wireless communication system to which the wireless station belongs.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: June 2, 2015
    Assignee: NEC CORPORATION
    Inventors: Kazushi Muraoka, Hiroto Sugahara, Masayuki Ariyoshi
  • Publication number: 20150119014
    Abstract: A frequency management method and device as well as a wireless system are provided by which acceptable transmit power is efficiently determined for transmitting stations in a system on the interfering side, neither with concentration of processing load on some part nor with redundant processing. When a frequency management apparatus (50—1) receives a notice regarding a change in the state of frequency use from a radio station (20—1) under its own management (S101), the frequency management apparatus (50—1) sets acceptable transmit power for radio stations (20—1, 20—2) under its own management and radio stations (20—3, 20—4) managed by another frequency management apparatus (50—2), based on the notified change in the state of frequency (S103, S104).
    Type: Application
    Filed: April 23, 2013
    Publication date: April 30, 2015
    Applicant: NEC Corporation
    Inventors: Kazushi Muraoka, Hiroto Sugahara, Kojiro Hamabe, Masayuki Ariyoshi
  • Patent number: 9002289
    Abstract: [Problem] To provide a wireless communication apparatus, a wireless communication system, an interference causing control method, a storage medium, and a control apparatus which can carry out appropriate interference causing control to a secondary system adaptively to an actual environment with no change in a configuration of a primary system. [Means to solve the problem] A wireless communication apparatus, which belongs to a wireless communication system, measures a wireless signal which causes interference to another system and which another wireless communication apparatus belonging to the wireless communication system transmits.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: April 7, 2015
    Assignee: NEC Corporation
    Inventors: Kazushi Muraoka, Hiroto Sugahara, Masayuki Ariyoshi
  • Patent number: 8964887
    Abstract: A wireless transmission device is characterized by including: first interference suppression processing means 71 for generating an interference suppression transmission signal for partially suppressing leakage power of a signal to an interference avoidance band by frequency-domain processing for the signal in a partial frequency band of transmission signals; and second interference suppression processing means 72 for generating an interference suppression transmission signal for suppressing leakage power of a signal to the interference avoidance band by time-domain processing for the signal in a partial or entire frequency band of transmission signals.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: February 24, 2015
    Assignee: NEC Corporation
    Inventors: Yasunori Futatsugi, Masayuki Ariyoshi
  • Patent number: 8964552
    Abstract: To provide a base station in which an electric power consumed in the base station can be suppressed and an electromagnetic wave interference between the base stations can be avoided, a method for controlling a base station, a control program, and a mobile station. The base station includes storage means, traffic history generation means for measuring a traffic of the base station for each unit time and storing it in the storage means as a traffic history, and control means for controlling transmission of a control signal based on the traffic history.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: February 24, 2015
    Assignee: NEC Corporation
    Inventors: Kazushi Muraoka, Yasuhiko Matsunaga, Masayuki Ariyoshi, Toshifumi Nakamura
  • Publication number: 20150045011
    Abstract: [Problems] Because it is not possible to reduce sufficiently the number of base stations that starts uselessly in spite of being in low traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently. [Measures] A base station starts transmission of a control signal with predetermined power when communication between other base station and a mobile station is started and a first predetermined condition is satisfied.
    Type: Application
    Filed: August 22, 2014
    Publication date: February 12, 2015
    Applicant: NEC CORPORATION
    Inventors: Toshifumi NAKAMURA, Kojiro HAMABE, Masayuki ARIYOSHI, Kazushi MURAOKA
  • Patent number: 8918059
    Abstract: [Problem] Provided are a base station, a terminal station, a radio system, a radio control method and a storage medium capable of estimating with high accuracy a utilization status of a frequency band which is assigned to or of which a preferential use is permitted to another radio system. [Solution] A base station of a radio system, which estimates a utilization status of a frequency band which is assigned to or of which a preferential use is permitted to another radio system, wherein the base station comprises an estimation means which estimates a utilization status of said frequency band, on the basis of a received signal power ratio between a received signal power value of the other radio systems and a received signal power value of the own radio system, which is obtained at least one sensing apparatus.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: December 23, 2014
    Assignee: Nec Corporation
    Inventors: Kenichirou Yamazaki, Masayuki Ariyoshi, Kojiro Hamabe
  • Patent number: 8908794
    Abstract: A wireless sending apparatus with a change judging means to judge whether changing an interference causing avoiding transmission means on the basis of predetermined change judging information, and to output the judgment as a change judgment result; a signal separating means to separate the sending signal into each the group on the basis of the change judgment result; a first interference causing avoiding transmission means to input the sending signal which is separated into each the group, and to reduce leak power by a time-domain process; a second interference causing avoiding transmission means to input the sending signal which is separated into each the group, and to reduce the leak power by a frequency-domain process; and a synthesizing means to synthesize the sending signals which the first interference causing avoiding transmission means and the second interference causing avoiding transmission means carry out the interference causing avoiding process.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: December 9, 2014
    Assignee: NEC Corporation
    Inventors: Yasunori Futatsugi, Masayuki Ariyoshi
  • Patent number: 8880085
    Abstract: Because it is not possible to reduce sufficiently the number of base stations that starts uselessly in spite of being in low traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently. A base station starts transmission of a control signal with predetermined power when communication between other base station and a mobile station is started and a first predetermined condition is satisfied.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: November 4, 2014
    Assignee: NEC Corporation
    Inventors: Toshifumi Nakamura, Kojiro Hamabe, Masayuki Ariyoshi, Kazushi Muraoka