Patents by Inventor Guizia Yan

Guizia Yan 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).

  • Synchronization method for terminal-to-terminal direct communication in time division duplex mobile communication system
    Patent number: 7466989
    Abstract: A method for the terminal-to-terminal direct communication in the TDMA mobile communication system includes the following steps when making use of the uplink timeslots of the normal communication: in the initial phase, a sender still transmits a signal to a receiver according to its transmission timing for the normal communication; the receiver detects signals of its surrounding terminals that are in normal communication, and selects one with the strongest power as the strongest interference signal; the receiver detects the signal from the sender and compares the arrival time of the sender's signal with that of the strongest interference signal, and thereby obtains an adjustment control instruction for the sender, and feedback the control instruction to the sender; the sender adjusts its transmission timing according to the control instruction that it receives. This invention solves the synchronization problem of the direct communication in the TDD mobile communication system.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: December 16, 2008
    Assignees: Samsung Electronics Co., Ltd., Beijing Samsung Telecom R&D Center
    Inventors: Ju-Ho Lee, Jeong-Gon Kim, Gaoke Du, Xiaoqiang Li, Guizia Yan
  • Sychronization method for terminal-to-terminal direct communication in time division duplex mobile communication system
    Publication number: 20060240854
    Abstract: A method for the terminal-to-terminal direct communication in the TDMA mobile communication system includes the following steps when making use of the uplink timeslots of the normal communication: in the initial phase, a sender still transmits a signal to a receiver according to its transmission timing for the normal communication; the receiver detects signals of its surrounding terminals that are in normal communication, and selects one with the strongest power as the strongest interference signal; the receiver detects the signal from the sender and compares the arrival time of the sender's signal with that of the strongest interference signal, and thereby obtains an adjustment control instruction for the sender, and feedback the control instruction to the sender; the sender adjusts its transmission timing according to the control instruction that it receives. This invention solves the synchronization problem of the direct communication in the TDD mobile communication system.
    Type: Application
    Filed: February 11, 2004
    Publication date: October 26, 2006
    Inventors: Ju-Ho Lee, Jeong-Gon Kim, Gaoke Du, Xiaoqiang Li, Guizia Yan