Patents by Inventor Sang Mi Yi

Sang Mi Yi 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: 9491694
    Abstract: Disclosed is a User Equipment (UE) accessing a Long Term Evolution (LTE) wireless communication system operating a Multi-Carrier (MC). The UE includes: an access history identification unit, when the UE accesses the LTE wireless communication system in a first frequency band on which the UE is camped, identifies whether the UE stores an access fail history of the first frequency band; a search unit, when the UE stores the access fail history of the first frequency band, receives a parameter indicating an accessibility to the LTE wireless communication system in a second frequency band, and searches for the second frequency band based on the received parameter; and an access control unit, when the LTE wireless communication system is found in the second frequency band based on a result of the search, accesses the LTE wireless communication system through the second frequency band.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: November 8, 2016
    Assignee: SK TELECOM CO., LTD.
    Inventor: Sang Mi Yi
  • Publication number: 20160014681
    Abstract: Disclosed is a User Equipment (UE) accessing a Long Term Evolution (LTE) wireless communication system operating a Multi-Carrier (MC). The UE includes: an access history identification unit, when the UE accesses the LTE wireless communication system in a first frequency band on which the UE is camped, identifies whether the UE stores an access fail history of the first frequency band; a search unit, when the UE stores the access fail history of the first frequency band, receives a parameter indicating an accessibility to the LTE wireless communication system in a second frequency band, and searches for the second frequency band based on the received parameter; and an access control unit, when the LTE wireless communication system is found in the second frequency band based on a result of the search, accesses the LTE wireless communication system through the second frequency band.
    Type: Application
    Filed: September 18, 2015
    Publication date: January 14, 2016
    Inventor: Sang Mi YI
  • Patent number: 8145163
    Abstract: A method of detecting a received signal, which is received by a receiving side of a communication system, is disclosed. The present invention includes comparing signal quality relevant information of the received signal to a prescribed reference value, selecting a pre-processing scheme to be applied to the received signal according to a result of the comparing step, and detecting a signal by applying the selected pre-processing scheme to the received signal. Thus, a pre-processing scheme for received signal detection can be differently applied according to a size of quality relevant information of a received signal. Accordingly, the present invention lowers a false alarm probability and/or a miss occurrence probability of the received signal, thereby raising a signal detection probability.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: March 27, 2012
    Assignee: LG Electronics Inc.
    Inventor: Sang Mi Yi
  • Publication number: 20090221251
    Abstract: A method of detecting a received signal, which is received by a receiving side of a communication system, is disclosed. The present invention includes comparing signal quality relevant information of the received signal to a prescribed reference value, selecting a pre-processing scheme to be applied to the received signal according to a result of the comparing step, and detecting a signal by applying the selected pre-processing scheme to the received signal. Thus, a pre-processing scheme for received signal detection can be differently applied according to a size of quality relevant information of a received signal. Accordingly, the present invention lowers a false alarm probability and/or a miss occurrence probability of the received signal, thereby raising a signal detection probability.
    Type: Application
    Filed: January 28, 2009
    Publication date: September 3, 2009
    Applicant: LG Electronics Inc.
    Inventor: Sang Mi YI