Patents by Inventor Masaru Kabashima

Masaru Kabashima 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: 20170086113
    Abstract: A base station device including a communication unit which connects wirelessly to, and communicates with, a terminal device located within a range capable of wireless communication, and a processing unit which carries out a search request process of requesting the terminal device to search for a base station device, to which the terminal device is capable of connecting, and to transmit base station information acquired by the search to the base station device, wherein the processing unit acquires operational information indicating change in an operational state of the terminal device, and carries out the search request process when it is determined based on the acquired operational information that the terminal device is in a first state in which the terminal device is capable of performing the search for a base station device.
    Type: Application
    Filed: August 9, 2016
    Publication date: March 23, 2017
    Applicant: FUJITSU LIMITED
    Inventor: Masaru Kabashima
  • Patent number: 9210620
    Abstract: When performing a handover of a user equipment, a base station selects one of first and second algorithms based on a handover state of the user equipment. Then, the base station determines a format of a communication channel with the user equipment based on the selected algorithm and quality of communication with the user equipment.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: December 8, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Takashi Murai, Masaru Kabashima
  • Publication number: 20140036867
    Abstract: When performing a handover of a user equipment, a base station selects one of first and second algorithms based on a handover state of the user equipment. Then, the base station determines a format of a communication channel with the user equipment based on the selected algorithm and quality of communication with the user equipment.
    Type: Application
    Filed: June 20, 2013
    Publication date: February 6, 2014
    Inventors: Takashi MURAI, Masaru KABASHIMA
  • Publication number: 20130294334
    Abstract: A base station holds an accumulated value of a transmission-power control command that is transmitted to a mobile station so as to perform closed-loop control of transmission power of the mobile station. The base station detects a discrepancy between an accumulated value held by the base station and an accumulated value of the transmission-power control command held by the mobile station. The base station sets the accumulated value held by the base station and the accumulated value held by the mobile station at the same value when the discrepancy is detected.
    Type: Application
    Filed: March 28, 2013
    Publication date: November 7, 2013
    Inventor: Masaru KABASHIMA
  • Patent number: 6091941
    Abstract: Disclosed is a radio apparatus in which modulating signals (I, Q signals) from an arithmetic/control unit are converted to analog signals, which are then applied to an orthogonal modulator. A modulated wave for transmission, which has been produced by orthogonally modulating a reference carrier wave by the modulating signals, is demodulated by the orthogonal detector. The arithmetic/control unit compares the modulating signals and the demodulated signals and, based upon the comparison, updates distortion compensation coefficients and applies pre-distortion processing to the modulating signal using the distortion compensation coefficients. Leakage carrier produced due to offset of the orthogonal modulator is detected and the arithmetic/control unit adjusts the level of the modulating signals or shifts the phase of the reference carrier wave in such a manner that the leakage carrier (offset) becomes zero.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: July 18, 2000
    Assignee: Fujitsu Limited
    Inventors: Yukihiro Moriyama, Yuji Kaneko, Koji Takata, Masaru Kabashima
  • Patent number: 6081698
    Abstract: Disclosed is a radio apparatus in which modulating signals (I, Q signals) from an arithmetic/control unit are converted to analog signals, which are then applied to an orthogonal modulator. A modulated wave for transmission, which has been produced by orthogonally modulating a reference carrier wave by the modulating signals, is demodulated by the orthogonal detector. The arithmetic/control unit compares the modulating signals and the demodulated signals and, based upon the comparison, updates distortion compensation coefficients and applies pre-distortion processing to the modulating signal using the distortion compensation coefficients. Leakage carrier produced due to offset of the orthogonal modulator is detected and the arithmetic/control unit adjusts the level of the modulating signals or shifts the phase of the reference carrier wave in such a manner that the leakage carrier (offset) becomes zero.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: June 27, 2000
    Assignee: Fujitsu Limited
    Inventors: Yukihiro Moriyama, Takeshi Takano, Yasuyuki Oishi, Yoshiya Ohsaki, Yuji Kaneko, Koji Takata, Masaru Kabashima