Patents by Inventor Dae-Sik Oh

Dae-Sik Oh 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 system for inter-frequency handoff and capacity enhancement in a wireless telecommunications network
    Patent number: 6714789
    Abstract: A method and system for allocating air interface resources in a wireless telecommunications network. A control entity determines the current or projected location of a mobile station. Using the location, the control entity identifies the physical sectors and respective carrier frequencies available to serve the mobile station. The control entity then selects an optimal physical sector and respective carrier frequency and instructs the mobile station to operate in the selected physical sector using the selected carrier frequency.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: March 30, 2004
    Assignee: Sprint Spectrum, L.P.
    Inventors: Dae-Sik Oh, Brian White
  • Method and system for vocoder bypass using differentiated telephone numbers
    Publication number: 20040009787
    Abstract: A system and method are provided for using differentiated telephone numbers to determine whether to perform a vocoder bypass. In an exemplary embodiment, a mobile station may call a terminating node. An intermediate entity may search an identifier of the terminating node for a predetermined aspect. If the predetermined aspect is found, the terminating node may be a mobile station, and the intermediate entity may perform a vocoder bypass. If the predetermined aspect is not found, the terminating node may be a non-mobile station, and the intermediate entity may perform vocoding.
    Type: Application
    Filed: July 11, 2002
    Publication date: January 15, 2004
    Applicant: Sprint Spectrum L.P.
    Inventors: Dae-Sik Oh, Deuk-Ho Ryu, Leo Ray Anderson