Patents by Inventor Jeong-Deog Seo

Jeong-Deog Seo 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).

  • Method and apparatus for compensating for optical transmission delay in a synchronous mobile communication system using synchronous digital hierarchy
    Patent number: 7324457
    Abstract: A method and apparatus are disclosed for compensating for optical transmission delays in a synchronous mobile communication system. A Base Station Transceiver Subsystem (BTS) includes a Main Unit (MU) for processing a mobile communication signal and a plurality of Remote Units (RUs) connected to the MU by Synchronous Digital Hierarchy (SDH) transmission, for performing radio processing for communication with a Mobile Station (MS). The method comprises the steps of sequentially forming a loop on an optical transmission line to each of the RUs for optical transmission delay compensation test between the MU and each of the RUs; once a loop for the optical transmission delay compensation test is formed, transmitting a test SDH frame to a corresponding RU, and measuring a delay time until the test SDH frame is fed back; and transmitting data to the corresponding RU after compensating the transmission time by the measured delay time.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: January 29, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Pyo Lee, Kwang-Hee Han, Jeong-Deog Seo
  • Method and apparatus for compensating for optical transmission delay in a synchronous mobile communication system using synchronous digital hierarchy
    Publication number: 20030185571
    Abstract: A method and apparatus are disclosed for compensating for optical transmission delays in a synchronous mobile communication system. A Base Station Transceiver Subsystem (BTS) includes a Main Unit (MU) for processing a mobile communication signal and a plurality of Remote Units (RUs) connected to the MU by Synchronous Digital Hierarchy (SDH) transmission, for performing radio processing for communication with a Mobile Station (MS). The method comprises the steps of sequentially forming a loop on an optical transmission line to each of the RUs for optical transmission delay compensation test between the MU and each of the RUs; once a loop for the optical transmission delay compensation test is formed, transmitting a test SDH frame to a corresponding RU, and measuring a delay time until the test SDH frame is fed back; and transmitting data to the corresponding RU after compensating the transmission time by the measured delay time.
    Type: Application
    Filed: January 14, 2003
    Publication date: October 2, 2003
    Inventors: Hyun-Pyo Lee, Kwang-Hee Han, Jeong-Deog Seo