Patents by Inventor Yuhong Duan

Yuhong Duan 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: 8948105
    Abstract: A method and system for dynamic adjustment of downlink/uplink resource allocation ratio in a long-term evolution (LTE) time division duplex (TDD) system is disclosed. The method includes replacing at least one uplink subframe in a subframe pattern with at least one of a mute subframe and a mute uplink pilot timeslot (UpPTS), within a geographical guard area that isolates at least two areas having different TDD allocation patterns. The method further includes scheduling an uplink transmission from at least one mobile terminal such that the at least one of the mute subframe and the mute UpPTS are unused. A simple solution or a TDD configuration index substitution solution, or any combination thereof, may be used to control the uplink transmission involving a mute subframe or a mute UpPTS.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: February 3, 2015
    Assignee: ZTE (USA) Inc.
    Inventors: Wenfeng Zhang, Yuhong Duan, Jian Hu, Zhifeng Ma, Zhongda Du, Bin Yu
  • Publication number: 20120120854
    Abstract: A method and system for dynamic adjustment of downlink/uplink resource allocation ratio in a long-term evolution (LTE) time division duplex (TDD) system is disclosed. The method includes replacing at least one uplink subframe in a subframe pattern with at least one of a mute subframe and a mute uplink pilot timeslot (UpPTS), within a geographical guard area that isolates at least two areas having different TDD allocation patterns. The method further includes scheduling an uplink transmission from at least one mobile terminal such that the at least one of the mute subframe and the mute UpPTS are unused. A simple solution or a TDD configuration index substitution solution, or any combination thereof, may be used to control the uplink transmission involving a mute subframe or a mute UpPTS.
    Type: Application
    Filed: April 27, 2010
    Publication date: May 17, 2012
    Applicant: ZTE (USA) INC.
    Inventors: Wenfeng Zhang, Yuhong Duan, Jian Hu, Zhifeng Ma, Zhongdang Du, Bin Yu
  • Patent number: 6928202
    Abstract: A package for an optical fiber sensor having a metal jacket surrounding the sensor, and heat-shrink tubing surrounding the metal jacket. The metal jacket is made of a low melting point metal (e.g. lead, tin). The sensor can be disposed in a rigid tube (e.g. stainless steel or glass) that is surrounded by the metal jacket. The metal jacket provides a hermetic, or nearly hermetic seal for the sensor. The package is made by melting the metal jacket and heating the heat shrink tubing at the same time. As the heat-shrink tubing shrinks, it presses the low melting point metal against the sensor, and squeezes out the excess metal.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: August 9, 2005
    Assignee: Virgina Tech Intellectual Properties, Inc.
    Inventors: Gary Pickrell, Yuhong Duan, Anbo Wang
  • Publication number: 20040223679
    Abstract: A package for an optical fiber sensor having a metal jacket surrounding the sensor, and heat-shrink tubing surrounding the metal jacket. The metal jacket is made of a low melting point metal (e.g. lead, tin). The sensor can be disposed in a rigid tube (e.g. stainless steel or glass) that is surrounded by the metal jacket. The metal jacket provides a hermetic, or nearly hermetic seal for the sensor. The package is made by melting the metal jacket and heating the heat shrink tubing at the same time. As the heat-shrink tubing shrinks, it presses the low melting point metal against the sensor, and squeezes out the excess metal.
    Type: Application
    Filed: October 21, 2003
    Publication date: November 11, 2004
    Inventors: Gary Pickrell, Yuhong Duan, Anbo Wang