Patents by Inventor Changgi Cho

Changgi Cho 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).

  • Resource allocation method in orthogonal frequency division multiple access wireless systems
    Patent number: 8085722
    Abstract: A resource allocation method in orthogonal frequency division multiple access wireless systems includes: setting, for each of terminals, data transmission factors including a resource location selection scheme; and determining, for each frame, locations of resources to be allocated to the terminals in a resource allocation order by using the resource location selection schemes. Determining the locations of the resources includes: setting the resource allocation order for the terminals according to priorities of the terminals; selecting resources to be allocated to a terminal by using the resource location selection scheme for the terminal; determining whether all or some of the selected resources have been already allocated to other terminals; and allocating the selected resources to the terminal, if it is determined that the selected resources have not been already allocated to other terminals.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: December 27, 2011
    Assignee: Korea Advance Institute of Science and Technology
    Inventors: Dan Keun Sung, Young Ik Seo, Nah Oak Song, Hu Jin, Changgi Cho, Hwang Soo Lee
  • RESOURCE ALLOCATION METHOD IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WIRELESS SYSTEMS
    Publication number: 20100054198
    Abstract: A resource allocation method in orthogonal frequency division multiple access wireless systems includes: setting, for each of terminals, data transmission factors including a resource location selection scheme; and determining, for each frame, locations of resources to be allocated to the terminals in a resource allocation order by using the resource location selection schemes Determining the locations of the resources includes: setting the resource allocation order for the terminals according to priorities of the terminals; selecting resources to be allocated to a terminal by using the resource location selection scheme for the terminal; determining whether all or some of the selected resources have been already allocated to other terminals; and allocating the selected resources to the terminal, if it is determined that the selected resources have not been already allocated to other terminals.
    Type: Application
    Filed: December 10, 2008
    Publication date: March 4, 2010
    Applicant: KOREA ADVANCED INSTITUDE OF SCIENCE AND TECHNOLOGY
    Inventors: Dan Keun Sung, Young Ik Seo, Nah Oak Song, Hu Jin, Changgi Cho, Hwang Soo Lee