Patents by Inventor Shuuichi Kozawa

Shuuichi Kozawa 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).

  • Wireless base station and packet transfer apparatus for dynamically controlling data transmission rate
    Patent number: 7003302
    Abstract: In a mobile communication system in which a plurality of base stations are connected to a communication network via a packet transfer node and a transmission rate of a forward link radio channel between a base station and a mobile station dynamically changes, each of the base stations designates a packet transmission rate in accordance with the status of a radio channel of each of mobile stations under control for the packet transmission node, and the packet control node transfers packets destined for each of mobile stations to the base station at the designated transfer rate.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: February 21, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Kiyohiko Yoshida, Hideo Aoe, Shuichi Miyazaki, Shuuichi Kozawa, Koji Hirayama
  • Wireless base station and packet transfer apparatus for dynamically controlling data transmission rate
    Publication number: 20020068588
    Abstract: In a mobile communication system in which a plurality of base stations are connected to a communication network via a packet transfer node and a transmission rate of a forward link radio channel between a base station and a mobile station dynamically changes, each of the base stations designates a packet transmission rate in accordance with the status of a radio channel of each of mobile stations under control for the packet transmission node, and the packet control node transfers packets destined for each of mobile stations to the base station at the designated transfer rate.
    Type: Application
    Filed: August 15, 2001
    Publication date: June 6, 2002
    Inventors: Kiyohiko Yoshida, Hideo Aoe, Shuichi Miyazaki, Shuuichi Kozawa, Koji Hirayama