Patents by Inventor Sung-Kyu Chang

Sung-Kyu Chang 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 location update in mobile communication system
    Patent number: 8515455
    Abstract: A method and apparatus enhances a location update success rate in a mobile communication terminal. The method includes trying the location update, determining whether a reject cause is a major cause when the location update is rejected, retrying the location update using a current location indicator when the reject cause is the major cause, and retrying the location update using a different location indicator when the retried location update is rejected.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: August 20, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Dong-Hwan An, Yong-Soo Song, Eun-Seok Yang, Sung-Kyu Chang
  • METHOD AND APPARATUS FOR LOCATION UPDATE IN MOBILE COMMUNICATION SYSTEM
    Publication number: 20120178474
    Abstract: A method and apparatus enhances a location update success rate in a mobile communication terminal. The method includes trying the location update, determining whether a reject cause is a major cause when the location update is rejected, retrying the location update using a current location indicator when the reject cause is the major cause, and retrying the location update using a different location indicator when the retried location update is rejected.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 12, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Hwan An, Yong-Soo Song, Eun-Seok Yang, Sung-Kyu Chang