Patents by Inventor Yasunori Katou

Yasunori Katou 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 communication system and communication control method
    Patent number: 7965619
    Abstract: The present invention relates to a wireless communication system that performs data communication using a spatial multiplex transmission scheme. A mobile station includes a transmission weight calculating unit that calculates a transmission weight and a beam information notifying signal generating unit that transmits a known signal for generating partial space information at a base station side. A base station includes a scheduling unit (DL spatial scheduling unit (17), UL spatial scheduling unit (18), and beam information notifying signal response vector estimating unit (20)) that generates the partial space information based on a received first known signal, and performs downstream scheduling and upstream scheduling based on the partial space information, and a scheduling result transmitting unit (UL control information generating unit (14) and transmission weight calculating unit (19)) that transmits a packet including an upstream scheduling result.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: June 21, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akinori Taira, Yasunori Katou, Yoshitaka Hara
  • WIRELESS COMMUNICATION SYSTEM AND COMMUNICATION CONTROL METHOD
    Publication number: 20090196203
    Abstract: The present invention relates to a wireless communication system that performs data communication using a spatial multiplex transmission scheme. A mobile station includes a transmission weight calculating unit that calculates a transmission weight and a beam information notifying signal generating unit that transmits a known signal for generating partial space information at a base station side. A base station includes a scheduling unit (DL spatial scheduling unit (17), UL spatial scheduling unit (18), and beam information notifying signal response vector estimating unit (20)) that generates the partial space information based on a received first known signal, and performs downstream scheduling and upstream scheduling based on the partial space information, and a scheduling result transmitting unit (UL control information generating unit (14) and transmission weight calculating unit (19)) that transmits a packet including an upstream scheduling result.
    Type: Application
    Filed: July 5, 2007
    Publication date: August 6, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akinori Taira, Yasunori Katou, Yoshitaka Hara