Patents by Inventor Hak-Seong Yu

Hak-Seong Yu 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).

  • Low-cost network system between a base station controller and a base transceiver station, and method for transmitting data between them
    Patent number: 7565167
    Abstract: Various embodiments of the invention relate to a low-cost network system that can reduce the network cost by connecting a base station controller (BSC) with a base transceiver station (BTS) by the use of matching units that match an E1/T1 line to an IP line. In one embodiment, the system comprises a BSC matching unit (BSCMU) and a BTS matching unit (BTSMU). The BSCMU, connected to the BSC through a first dedicated line, converts a first dedicated-line data signal, received from the BSC, into a first IP signal to be transmitted through an IP line and converts a received second IP signal into a second dedicated-line data signal to be transmitted to the BSC. The BTSMU, connected to the BTS through a second dedicated line, converts the first IP signal into the first dedicated-line data signal to be transmitted to the BTS and converts the second dedicated-line data signal, received from the BTS, into the second IP signal.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: July 21, 2009
    Assignee: KTFREETEL Co., Ltd.
    Inventors: Kyeong-Soo Lee, Hee-Nam Son, Hak-Seong Yu, Sang-Hoon Park
  • Low-cost network system between a base station controller and a base transceiver station, and method for transmitting data between them
    Publication number: 20050068984
    Abstract: Various embodiments of the invention relate to a low-cost network system that can reduce the network cost by connecting a base station controller (BSC) with a base transceiver station (BTS) by the use of matching units that match an E1/T1 line to an IP line. In one embodiment, the system comprises a BSC matching unit (BSCMU) and a BTS matching unit (BTSMU). The BSCMU, connected to the BSC through a first dedicated line, converts a first dedicated-line data signal, received from the BSC, into a first IP signal to be transmitted through an IP line and converts a received second IP signal into a second dedicated-line data signal to be transmitted to the BSC. The BTSMU, connected to the BTS through a second dedicated line, converts the first IP signal into the first dedicated-line data signal to be transmitted to the BTS and converts the second dedicated-line data signal, received from the BTS, into the second IP signal.
    Type: Application
    Filed: October 7, 2004
    Publication date: March 31, 2005
    Inventors: Kyeong-Soo Lee, Hee-Nam Son, Hak-Seong Yu, Sang-Hoon Park
  • Low-cost network system between a base station controller and a base transceiver station, and method for transmitting data between them
    Patent number: RE46415
    Abstract: Various embodiments of the invention relate to a low-cost network system that can reduce the network cost by connecting a base station controller (BSC) with a base transceiver station (BTS) by the use of matching units that match an E1/T1 line to an IP line. In one embodiment, the system comprises a BSC matching unit (BSCMU) and a BTS matching unit (BTSMU). The BSCMU, connected to the BSC through a first dedicated line, converts a first dedicated-line data signal, received from the BSC, into a first IP signal to be transmitted through an IP line and converts a received second IP signal into a second dedicated-line data signal to be transmitted to the BSC. The BTSMU, connected to the BTS through a second dedicated line, converts the first IP signal into the first dedicated-line data signal to be transmitted to the BTS and converts the second dedicated-line data signal, received from the BTS, into the second IP signal.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: May 23, 2017
    Assignee: KT Corporation
    Inventors: Kyeong-Soo Lee, Hee-Nam Son, Hak-Seong Yu, Sang-Hoon Park