Patents by Inventor Tiezhu Zhao

Tiezhu Zhao 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: 12184389
    Abstract: A space-air-ground integrated UAV-assisted IoT data collection method based on AoI comprises: constructing a UAV-assisted space-air-ground integrated IoT system, constructing a UAV channel model and an AoI model, establishing an AoI-based UAV-assisted space-air-ground integrated IoT data collection model, transforming a problem into a Markov problem, introducing a neural network to solve a high-dimensional state problem, introducing a deep reinforcement learning algorithm to train UAVs to find optimal collection points, and introducing a matching theory to match the UAVs and IoT devices.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: December 31, 2024
    Assignee: Dongguan University of Technology
    Inventors: Guobin Zhang, Xin Wei, Tiezhu Zhao
  • Publication number: 20230239037
    Abstract: A space-air-ground integrated UAV-assisted IoT data collection method based on AoI comprises: constructing a UAV-assisted space-air-ground integrated IoT system, constructing a UAV channel model and an AoI model, establishing an AoI-based UAV-assisted space-air-ground integrated IoT data collection model, transforming a problem into a Markov problem, introducing a neural network to solve a high-dimensional state problem, introducing a deep reinforcement learning algorithm to train UAVs to find optimal collection points, and introducing a matching theory to match the UAVs and IoT devices.
    Type: Application
    Filed: August 8, 2022
    Publication date: July 27, 2023
    Inventors: Guobin ZHANG, Xin WEI, Tiezhu ZHAO
  • Patent number: 11453832
    Abstract: An experimental method for coal desulfurization and deashing using permeation and solvating power of a supercritical fluid includes the following steps. The coal sample is ground and loaded into an extraction kettle with a cover. An inlet valve and an outlet valve of the extraction kettle are opened to circulate the supercritical CO2 fluid in the extraction kettle. The extraction kettle is sealed. By adjusting a temperature and a pressure in the extraction kettle, the supercritical CO2 fluid is kept at its critical point and permeates the coal sample to dissolve organic sulfur, inorganic sulfur and ash in the coal sample. The extraction kettle is depressurized, and the temperature in the extraction kettle is adjusted to gasify the supercritical CO2 fluid. The organic sulfur, the inorganic sulfur and part of the ash are separated from the supercritical CO2 fluid and precipitated at a bottom of the extraction kettle.
    Type: Grant
    Filed: November 21, 2020
    Date of Patent: September 27, 2022
    Assignees: SHANXI COKING COAL GROUP CO., LTD., CHINA UNIVERSITY OF MINING AND TECHNOLOGY, JIANGSU HYDROCARBON CLEAN ENERGY TECHNOL.RES.INST
    Inventors: Jinfang Liu, Xiahui Gui, Yin Peng, Linsheng Gong, Tiezhu Zhao, Pengde Zhang, Zijian Ma
  • Publication number: 20210155868
    Abstract: An experimental method for coal desulfurization and deashing using permeation and solvating power of a supercritical fluid includes the following steps. The coal sample is ground and loaded into an extraction kettle with a cover. An inlet valve and an outlet valve of the extraction kettle are opened to circulate the supercritical CO2 fluid in the extraction kettle. The extraction kettle is sealed. By adjusting a temperature and a pressure in the extraction kettle, the supercritical CO2 fluid is kept at its critical point and permeates the coal sample to dissolve organic sulfur, inorganic sulfur and ash in the coal sample. The extraction kettle is depressurized, and the temperature in the extraction kettle is adjusted to gasify the supercritical CO2 fluid. The organic sulfur, the inorganic sulfur and part of the ash are separated from the supercritical CO2 fluid and precipitated at a bottom of the extraction kettle.
    Type: Application
    Filed: November 21, 2020
    Publication date: May 27, 2021
    Inventors: Jinfang LIU, Xiahui GUI, Yin PENG, Linsheng GONG, Tiezhu ZHAO, Pengde ZHANG, Zijian MA
  • Publication number: 20110090869
    Abstract: A method for supporting handover from macro Node B to home Node B is proposed according present invention, comprising: informing, by a source radio network control node of a UE1 the UE of configuration parameters of a cell to be measured and indicating the UE to report a unique ID of the measured cell; measuring, by the UE, a signal from the home Node B, and after reading the home Node B's unique ID from the home Node B's system information, reporting the measurement result to said source radio network control node of the UE, said measurement result including the home Node B's unique ID; and sending, by said source radio network control node, a message to a destination radio network control node of said home Node B specified by said unique ID, so that the destination radio network control node can establish radio bearer in the home Node B for the UE.
    Type: Application
    Filed: April 16, 2009
    Publication date: April 21, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yirong Tian, Kwon Joong Kim, Zhenwei Shi, Tiezhu Zhao