Patents by Inventor Zichuan Xu

Zichuan Xu 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: 11973569
    Abstract: A method for request scheduling in an unmanned aerial vehicle-assisted mobile edge computing network: determining multiple feasible UAV deployment points based on obstruction information in a target area; randomly selecting U feasible UAV deployment points from the multiple feasible UAV deployment points as UAV deployment points; dividing each UAV into multiple virtual UAVs; allocating user requests in a central queue of a UAV-assisted MEC to the virtual UAVs; using a round-robin policy to schedule the user requests allocated to each virtual UAV; after a specified time period t, if a network pressure mitigation condition isn't met, inputting historical user request data of each feasible UAV deployment point into a trained MT-LSTM neural network model, obtaining a to-be-processed data volume of each feasible UAV deployment point in a next specified time period t; re-determining UAV deployment points; redeploying UAVs carrying small cell base stations based on the new UAV deployment points.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: April 30, 2024
    Assignee: Dalian University of Technology
    Inventors: Zichuan Xu, Qiufen Xia, Haiyang Qiao
  • Publication number: 20240080090
    Abstract: A method for request scheduling in an unmanned aerial vehicle-assisted mobile edge computing network: determining multiple feasible UAV deployment points based on obstruction information in a target area; randomly selecting U feasible UAV deployment points from the multiple feasible UAV deployment points as UAV deployment points; dividing each UAV into multiple virtual UAVs; allocating user requests in a central queue of a UAV-assisted MEC to the virtual UAVs; using a round-robin policy to schedule the user requests allocated to each virtual UAV; after a specified time period t, if a network pressure mitigation condition isn't met, inputting historical user request data of each feasible UAV deployment point into a trained MT-LSTM neural network model, obtaining a to-be-processed data volume of each feasible UAV deployment point in a next specified time period t; re-determining UAV deployment points; redeploying UAVs carrying small cell base stations based on the new UAV deployment points.
    Type: Application
    Filed: October 26, 2021
    Publication date: March 7, 2024
    Inventors: Zichuan Xu, Qiufen Xia, Haiyang Qiao
  • Patent number: 11880952
    Abstract: The disclosure discloses a method and system for adjusting user field of view (FoV) in a three-dimensional virtual reality (VR) scene. The method includes: acquiring two consecutive frames of scene pictures during a period of a user experiencing a VR scene by using a VR device; determining a projected scene flow vector on the basis of the two consecutive frames of scene pictures; generating a virtual scene graph of the two consecutive frames of scene pictures; determining a projected scene flow value of the virtual scene graph on the basis of the projected scene flow vector; determining a peripheral vision pixel of the virtual scene graph; calculating a projected scene flow average value of the peripheral vision pixel on the basis of the projected scene flow value of the virtual scene graph; and dynamically adjust a FoV of the user on the basis of the projected scene flow average value.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: January 23, 2024
    Assignee: Dalian University of Technology
    Inventors: Qiufen Xia, Zhuangze Hou, Zichuan Xu
  • Publication number: 20230360335
    Abstract: The disclosure discloses a method and system for adjusting user field of view (FoV) in a three-dimensional virtual reality (VR) scene. The method includes: acquiring two consecutive frames of scene pictures during a period of a user experiencing a VR scene by using a VR device; determining a projected scene flow vector on the basis of the two consecutive frames of scene pictures; generating a virtual scene graph of the two consecutive frames of scene pictures; determining a projected scene flow value of the virtual scene graph on the basis of the projected scene flow vector; determining a peripheral vision pixel of the virtual scene graph; calculating a projected scene flow average value of the peripheral vision pixel on the basis of the projected scene flow value of the virtual scene graph; and dynamically adjust a FoV of the user on the basis of the projected scene flow average value.
    Type: Application
    Filed: July 14, 2022
    Publication date: November 9, 2023
    Applicant: Dalian University of Technology
    Inventors: Qiufen Xia, Zhuangze Hou, Zichuan Xu
  • Publication number: 20230013718
    Abstract: Uncertainty-ware federated learning methods and systems in a mobile edge computing network can include defining an average volume of a training parameter of each user equipment under an uncertainty of a mobile edge computing network based on a federated learning framework; determining an average model size factor and the minimum and maximum number of aggregators during each federated learning task request; determining the number of aggregators; constructing an auxiliary graph, and determining a location decision according to the auxiliary graph; determining a total cost during each federated learning task request according to the location decision; adjusting the number of aggregators according to the total cost with a resource capacity of the mobile edge computing network as a constraint to obtain the decision including aggregator placement, user equipment assignment and the optimal number of aggregators during each federated learning task request, and optimizing the federated learning framework.
    Type: Application
    Filed: October 11, 2021
    Publication date: January 19, 2023
    Inventors: Zichuan Xu, Qiufen Xia, Dongrui Li