Patents by Inventor Hung-Kee Kim

Hung-Kee Kim 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).

  • Adaptive transmit antenna diversity apparatus and method in a mobile communication system
    Patent number: 7366247
    Abstract: Apparatus and method are disclosed for selecting a transmit antenna diversity scheme according to a variation speed of a fading channel in a mobile communication system. A user equipment (UE) estimates a channel response of a pilot channel by receiving a pilot channel signal from a Node B; estimates a variation speed of a fading channel by using the estimated channel response and determining a transmit antenna diversity scheme suitable to the variation speed of the fading channel; and transmits feedback information including the determined transmit antenna diversity scheme to the Node B, so that the Node B can determine a transmit antenna diversity scheme for a channel signal to be transmitted to the UE based on the transmit antenna diversity scheme information included in the feedback information. In this way, the Node B adaptively applies a transmit antenna diversity according to a channel condition.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: April 29, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hung-Kee Kim, Yong-Suk Lee, Sung-Jin Kim, Kang-Min Lee, Yong-Suk Moon, Noh-Sun Kim
  • Adaptive transmit antenna diversity apparatus and method in a mobile communication system
    Publication number: 20040077378
    Abstract: Apparatus and method are disclosed for selecting a transmit antenna diversity scheme according to a variation speed of a fading channel in a mobile communication system. A user equipment (UE) estimates a channel response of a pilot channel by receiving a pilot channel signal from a Node B; estimates a variation speed of a fading channel by using the estimated channel response and determining a transmit antenna diversity scheme suitable to the variation speed of the fading channel; and transmits feedback information including the determined transmit antenna diversity scheme to the Node B, so that the Node B can determine a transmit antenna diversity scheme for a channel signal to be transmitted to the UE based on the transmit antenna diversity scheme information included in the feedback information. In this way, the Node B adaptively applies a transmit antenna diversity according to a channel condition.
    Type: Application
    Filed: July 2, 2003
    Publication date: April 22, 2004
    Inventors: Hung-Kee Kim, Yong-Suk Lee, Sung-Jin Kim, Kang-Min Lee, Yong-Suk Moon, Noh-Sun Kim