Patents by Inventor Duan Chen
Duan Chen 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).
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Publication number: 20260084121Abstract: A simulation device for generating a supersaturated total dissolved gas (TDG) in a flood discharge and energy dissipation region of a dam is provided. The simulation device includes a reactor, a water inlet system, a gas inlet system, a venting system, a water drainage and gas exhaust system, a monitoring system, and a control system. An observation window is defined on the reactor, and a magnetic stirring assembly is installed inside the reactor. The cooperation of the water inlet system and the gas inlet system quantitatively controls a mass flow rate of water and gas entering and exiting the reactor, controls the change and variation of a temperature and a pressure inside the reactor, simulates the process of generating supersaturated TDG in the flood discharge and energy dissipation region by injecting water flow with varying air entrainment concentrations, and simulates changes in supersaturated TDG concentrations under varying pressure conditions.Type: ApplicationFiled: June 24, 2025Publication date: March 26, 2026Inventors: Songlin Han, Zhibing Jiang, Duan Chen, Zhixin Wang, Jibin Han, Kunjie Ren, Zibing Cheng, Xiaoxia Hou, Jing Dong, Liguang Qu
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Patent number: 12352000Abstract: Provided is a laboratory experiment system including an upstream reservoir. A main river channel is connected to a water outlet of the upstream reservoir. A barrier dam is built up in the main river channel. Uneroded dam bodies are constructed on two side surfaces of the barrier dam. A branch river channel extends on a surface of the barrier dam. A material hopper is connected to a feed inlet of the branch river channel. River banks are constructed on outer sides of the uneroded dam bodies. The feed inlet is docked with a descending conveyor belt. A feeding end of the descending conveyor belt is docked with an ascending conveyor belt. A discharge end of the material hopper defines a bottom hole. The bottom hole is connected to a material pipe. A discharge end of the material pipe corresponds to an inner side of the ascending conveyor belt.Type: GrantFiled: February 11, 2025Date of Patent: July 8, 2025Assignee: Changjiang River Scientific Research InstituteInventors: Wei Huang, Wengang Duan, Qigui Yang, Duan Chen, Yufang Ni, Qingyuan Yang, Huiqun Cao
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Patent number: 12273240Abstract: An example method may include receiving slice isolation policy for a network slice subnet (NSS) in a transport network (TN) domain, mapping the slice isolation policy to network resource isolation policy and traffic isolation policy, and mapping the network resource isolation policy and the traffic isolation policy to network resource allocation policy and data traffic forward policy, respectively. The network resource allocation policy and the data traffic forward policy may be applied in creation of the TN NSS.Type: GrantFiled: July 15, 2020Date of Patent: April 8, 2025Assignee: NOKIA SOLUTIONS AND NETWORKS OYInventors: Zhiyuan Hu, Jing Ping, Iris Adam, Duan Chen, Zhigang Luo
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Patent number: 12170694Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for data sharing. In example embodiments, a method for data sharing is provided. The method comprises, in response to receiving a first request to share data of a user from a data sharing agent, creating a data sharing smart contract for the user. The method further comprises publishing the data sharing smart contract to one or more data consumers. The method further comprises, in response to receiving a second request to access the data from a data consumer, generating, by executing the data sharing smart contract, an indication that the data consumer is authorized to access the data. In addition, the method further comprises sending the indication to the data consumer. In this way, end users are enabled to manage and share their personal data by themselves.Type: GrantFiled: December 29, 2018Date of Patent: December 17, 2024Assignee: NOKIA TECHNOLOGIES OYInventors: Zhiyuan Hu, Duan Chen, Yueming Yin, Zhigang Luo
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Publication number: 20240184960Abstract: The invention provides a calculation method for dike breach development process, which relates to the field of flood disaster prevention. In this method, the influence of hydrodynamic on the development rate of the breach is considered, and the unit discharge of the breach is taken as the main parameter. The parameter expression between the hydrodynamic factors and the development process of the breach is established for both lateral widening and vertical downcutting. According to the invention, the whole development process of dike breach can be calculated with only a few parameters, and the main parameter unit discharge can be directly obtained by the discharge formula of broad crested weir. As the calculation incorporating as much physical mechanism as possible and simple calculation procedure, the method has high practicability, good repeatability and scientificity.Type: ApplicationFiled: November 28, 2023Publication date: June 6, 2024Inventors: Wei Huang, Duan Chen, WenGang Duan, YuFang Ni, QingYuan Yang, SiQi Wei, QinXue Xia
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Publication number: 20230362057Abstract: An example method may include receiving slice isolation policy for a network slice subnet (NSS) in a transport network (TN) domain, mapping the slice isolation policy to network resource isolation policy and traffic isolation policy, and mapping the network resource isolation policy and the traffic isolation policy to network resource allocation policy and data traffic forward policy, respectively. The network resource allocation policy and the data traffic forward policy may be applied in creation of the TN NSS.Type: ApplicationFiled: July 15, 2020Publication date: November 9, 2023Applicant: Nokia Solutions and Networks OyInventors: Zhiyuan HU, Jing PING, Iris ADAM, Duan CHEN, Zhigang LUO
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Patent number: 11616718Abstract: Example embodiments of the present disclosure relate to enablement of a service function chain based on a software defined network. In some embodiments, there is provided a method implemented at a service function chain controller. The method comprises creating a service function chain for a packet, the service function chain comprising a set of ordered service functions that are to process the packet; and configuring respective forwarding rules associated with the service function chain directly or indirectly to a plurality of network nodes in a software defined network, the respective forwarding rules indicating how the plurality of network nodes forward the packet to the set of ordered service functions in the service function chain. In this way, it is possible to enable the service function chain in the software defined network.Type: GrantFiled: July 11, 2018Date of Patent: March 28, 2023Assignee: NOKIA TECHNOLOGIES OYInventors: Zhiyuan Hu, Duan Chen, Zhigang Luo
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Publication number: 20220060514Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for data sharing. In example embodiments, a method for data sharing is provided. The method comprises, in response to receiving a first request to share data of a user from a data sharing agent, creating a data sharing smart contract for the user. The method further comprises publishing the data sharing smart contract to one or more data consumers. The method further comprises, in response to receiving a second request to access the data from a data consumer, generating, by executing the data sharing smart contract, an indication that the data consumer is authorized to access the data. In addition, the method further comprises sending the indication to the data consumer. In this way, end users are enabled to manage and share their personal data by themselves.Type: ApplicationFiled: December 29, 2018Publication date: February 24, 2022Inventors: Zhiyuan Hu, Duan Chen, Yueming Yin, Zhigang Luo
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Patent number: 11184319Abstract: A method, a device, an apparatus and a computer-readable storage medium for MAC address conflict detection. The method includes: in response to detecting a wireless local area network, transmitting, at a first device, a dummy MAC address of the first device to a second device in the wireless local area network, the dummy MAC address being different from a real MAC address of the first device; transmitting an address conflict detection request for the dummy MAC address to the second device; and in response to an address conflict detection response from the second device indicating that there is no conflict for the dummy MAC address, establishing a connection with the wireless local area network. The method may effectively protect privacy information for a user of a terminal device, while avoiding a MAC address conflict, such that the user can communicate in a secure network environment.Type: GrantFiled: June 4, 2020Date of Patent: November 23, 2021Assignee: Nokia Solutions and Networks OyInventors: Zhiyuan Hu, Duan Chen, Yueming Yin, Zhigang Luo
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Publication number: 20210273883Abstract: Example embodiments of the present disclosure relate to enablement of a service function chain based on a software defined network. In some embodiments, there is provided a method implemented at a service function chain controller. The method comprises creating a service function chain for a packet, the service function chain comprising a set of ordered service functions that are to process the packet; and configuring respective forwarding rules associated with the service function chain directly or indirectly to a plurality of network nodes in a software defined network, the respective forwarding rules indicating how the plurality of network nodes forward the packet to the set of ordered service functions in the service function chain. In this way, it is possible to enable the service function chain in the software defined network.Type: ApplicationFiled: July 11, 2018Publication date: September 2, 2021Inventors: Zhiyuan HU, Duan CHEN, Zhigang LUO
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Publication number: 20200403967Abstract: A method, a device, an apparatus and a computer-readable storage medium for MAC address conflict detection. The method includes: in response to detecting a wireless local area network, transmitting, at a first device, a dummy MAC address of the first device to a second device in the wireless local area network, the dummy MAC address being different from a real MAC address of the first device; transmitting an address conflict detection request for the dummy MAC address to the second device; and in response to an address conflict detection response from the second device indicating that there is no conflict for the dummy MAC address, establishing a connection with the wireless local area network. The method may effectively protect privacy information for a user of a terminal device, while avoiding a MAC address conflict, such that the user can communicate in a secure network environment.Type: ApplicationFiled: June 4, 2020Publication date: December 24, 2020Inventors: Zhiyuan HU, Duan Chen, Yueming Yin, Zhigang Luo
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Publication number: 20170246267Abstract: The invention provides for methods for treating gastric cancer or colon cancer in a subject by administering a cholinergic antagonist, a Botulinum toxin, a NGF inhibitior, a TRK inhibitor, or performing a surgical denervation. The invention provides for inhibiting stem cells growth by administering a cholinergic antagonist, a Botulinum toxin, a NGF inhibitior, a TRK inhibitor, or performing a surgical denervation. The invention provides for stimulating regeneration of the colon or stomach by administering a cholinergic agonist.Type: ApplicationFiled: February 21, 2017Publication date: August 31, 2017Inventors: Timothy C. WANG, Duan CHEN, Chun-Mei ZHAO
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Patent number: 9197550Abstract: A method and corresponding device for determining forwarding rule for data packet in Virtual Private LAN Service with Provider Backbone Bridge (PBB-VPLS) network are disclosed. In the method, a value in a backbone service instance identifier (I-SID) field of the received data packet is firstly examined, then a virtual split horizon group corresponding to the data packets is determined based on the I-SID value, wherein the virtual split horizon group defines a forwarding rule for the data packets between different pseudo wire ports of the PBB-VPLS network. With the dynamic split horizon group, the method dynamically adapts to different forwarding rules for multiple I-VPLS instances with different tree topologies, and is capable of supporting multiple I-VPLS instances with different root sites and tree topologies in one B-VPLS instance, thereby ensuring the stability of the backbone network and reducing the network operation cost.Type: GrantFiled: December 17, 2009Date of Patent: November 24, 2015Assignee: Alcatel LucentInventors: Lixin Zhang, Duan Chen, Lijun Chen
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Publication number: 20120243545Abstract: A method and corresponding device for determining forwarding rule for data packet in Virtual Private LAN Service with Provider Backbone Bridge (PBB-VPLS) network are disclosed. In the method, a value in a backbone service instance identifier (I-SID) field of the received data packet is firstly examined, then a virtual split horizon group corresponding to the data packets is determined based on the I-SID value, wherein the virtual split horizon group defines a forwarding rule for the data packets between different pseudo wire ports of the PBB-VPLS network. With the dynamic split horizon group, the method dynamically adapts to different forwarding rules for multiple I-VPLS instances with different tree topologies, and is capable of supporting multiple I-VPLS instances with different root sites and tree topologies in one B-VPLS instance, thereby ensuring the stability of the backbone network and reducing the network operation cost.Type: ApplicationFiled: December 17, 2009Publication date: September 27, 2012Inventors: Lixin Zhang, Duan Chen, Lijun Chen
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Publication number: 20050254062Abstract: Apparatus and method for detecting the presence or amount or rate of binding of an analyte in a sample solution is disclosed. The apparatus includes an optical assembly having first and second reflecting surfaces separated by a distance ādā greater than 50 nm, where the first surface is formed by a layer of analyte-binding molecules, and a light source for directing a beam of light onto said first and second reflecting surface. A detector in the apparatus operates to detect a change in the thickness of the first reflecting layer resulting from binding of analyte to the analyte-binding molecules, when the assembly is placed in the solution of analyte, by detecting a shift in phase of light waves reflected from the first and second surfaces.Type: ApplicationFiled: November 4, 2004Publication date: November 17, 2005Applicant: Fortebio, Inc.Inventors: Hong Tan, Duan Chen, Yushan Tan, Krista Witte