Patents by Inventor Chaehwan Cho

Chaehwan 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).

  • Patent number: 8121622
    Abstract: Disclosed is a system and method for providing a mobile communication terminal with network-based location measurement according to locations by using a G-pCell database. The system includes an NPS for storing a neighboring base station database and a G-pCell database; and an SPC for detecting the location of a base station by parsing a base station signal received from the mobile communication terminal when a location measurement request signal is received from the mobile communication terminal, and determining a location of the mobile communication terminal by using a G-pCell pattern matching algorithm when the number of base stations neighboring the mobile communication terminal, detected by parsing the base station signal, is less than the stored number of neighboring base stations corresponding to the location of the base station, discovered using the neighboring base station database.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: February 21, 2012
    Assignee: SK Telecom Co., Ltd.
    Inventors: Gyuyoung Han, Chaehwan Cho
  • Patent number: 8073466
    Abstract: Disclosed are a method and a system for providing a mobile communication terminal with network-based location measurement by using a G-pCell database. The method and system are advantageous in that, when a mobile communication system employs a network-based location measurement scheme, the influence of repeaters is reduced to improve the positioning stability and measurement accuracy and provide more stable location-based services.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: December 6, 2011
    Assignee: SK Telecom Co., Ltd.
    Inventors: Gyuyoung Han, Sehyun Oh, Jongtae Ihm, Seongho Ha, Hojin Yang, Jungbae Moon, Chaehwan Cho, Kihak Shim
  • Patent number: 8068852
    Abstract: There is provided a system for detecting a location of a mobile station (MS) by using a pilot strength measurement message (PSMM) in a mobile communication system providing a location-based service in a mobile communication network, comprising: a position determination entity (PDE) for detecting the location of the mobile station, collecting PSMM information from the mobile station, the location detection of which is required, and obtaining the location of the mobile station by using collected PSMM information.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: November 29, 2011
    Assignee: SK Telecom Co., Ltd.
    Inventors: Chaehwan Cho, Gyuyoung Han, Namgyu Kim, Jungbae Moon, Hojin Yang
  • Publication number: 20100113063
    Abstract: Disclosed is a system and method for providing a mobile communication terminal with network-based location measurement according to locations by using a G-pCell database. The system includes an NPS for storing a neighboring base station database and a G-pCell database; and an SPC for detecting the location of a base station by parsing a base station signal received from the mobile communication terminal when a location measurement request signal is received from the mobile communication terminal, and determining a location of the mobile communication terminal by using a G-pCell pattern matching algorithm when the number of base stations neighboring the mobile communication terminal, detected by parsing the base station signal, is less than the stored number of neighboring base stations corresponding to the location of the base station, discovered using the neighboring base station database.
    Type: Application
    Filed: May 29, 2007
    Publication date: May 6, 2010
    Inventors: Gyuyoung Han, Chaehwan Cho
  • Publication number: 20100062792
    Abstract: Disclosed are a method and a system for providing a mobile communication terminal with network-based location measurement by using a G-pCell database. The method and system are advantageous in that, when a mobile communication system employs a network-based location measurement scheme, the influence of repeaters is reduced to improve the positioning stability and measurement accuracy and provide more stable location-based services.
    Type: Application
    Filed: May 29, 2007
    Publication date: March 11, 2010
    Applicant: SK TELECOM CO., LTD.
    Inventors: Gyuyoung Han, Sehyun Oh, Jongtae Ihm, Seongho Ha, Hojin Yang, Jungbae Moon, Chaehwan Cho, Kihak Shim
  • Publication number: 20090274116
    Abstract: There is provided a system for detecting a location of a mobile station (MS) by using a pilot strength measurement message (PSMM) in a mobile communication system providing a location-based service in a mobile communication network, comprising: a position determination entity (PDE) for detecting the location of the mobile station, collecting PSMM information from the mobile station, the location detection of which is required, and obtaining the location of the mobile station by using collected PSMM information.
    Type: Application
    Filed: April 18, 2007
    Publication date: November 5, 2009
    Inventors: Chaehwan Cho, Gyuyoung Han, Namgyu Kim, Jungbae Moon, Hojin Yang