Patents by Inventor Hirokatsu Nara

Hirokatsu Nara 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).

  • Mobile communications system and method for controlling transmission power
    Publication number: 20070123272
    Abstract: A mobile communications system, designed to enable the overall amount of power emitted to be kept down, provided with a mobile station location information generating unit for generating location information indicating a present location of a mobile station when transmitting a request for increasing the transmission power from the mobile station in the middle of handover with base transceiver stations, a base transceiver station location information generating unit for generating location information indicating a present location of the base transceiver stations, a base transceiver station specifying unit for specifying one base transceiver station nearest to the mobile station from said location information, and a transmission power control unit for instructing an increase of the transmission power in only the specified base transceiver station.
    Type: Application
    Filed: October 11, 2006
    Publication date: May 31, 2007
    Inventors: Tohru Ida, Hirokatsu Nara
  • Mobile communications system and method for controlling transmission power
    Patent number: 7136665
    Abstract: A mobile communications system, designed to enable the overall amount of power emitted to be kept down, provided with a mobile station location information generating unit for generating location information indicating a present location of a mobile station when transmitting a request for increasing the transmission power from the mobile station in the middle of handover with base transceiver stations, a base transceiver station location information generating unit for generating location information indicating a present location of the base transceiver stations, a base transceiver station specifying unit for specifying one base transceiver station nearest to the mobile station from said location information, and a transmission power control unit for instructing an increase of the transmission power in only the specified base transceiver station.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: November 14, 2006
    Assignee: Fujitsu Limited
    Inventors: Tohru Ida, Hirokatsu Nara
  • CDMA mobile communication system
    Patent number: 6747965
    Abstract: ACDMAmobile communication system is disclosed in which a desired soft handoff operation is carried out by inhibiting signaling message transmission when a radio receiving condition at a receiving station is deteriorated.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: June 8, 2004
    Assignee: Fujitsu Limited
    Inventors: Hirokatsu Nara, Tohru Ida
  • Mobile communications system and method for controlling transmission power
    Publication number: 20020082036
    Abstract: A mobile communications system, designed to enable the overall amount of power emitted to be kept down, provided with a mobile station location information generating unit for generating location information indicating a present location of a mobile station when transmitting a request for increasing the transmission power from the mobile station in the middle of handover with base transceiver stations, a base transceiver station location information generating unit for generating location information indicating a present location of the base transceiver stations, a base transceiver station specifying unit for specifying one base transceiver station nearest to the mobile station from said location information, and a transmission power control unit for instructing an increase of the transmission power in only the specified base transceiver station.
    Type: Application
    Filed: October 5, 2001
    Publication date: June 27, 2002
    Inventors: Tohru Ida, Hirokatsu Nara