Patents by Inventor Yaokun ZHANG

Yaokun ZHANG 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).

  • Publication number: 20210329529
    Abstract: Embodiments of this application disclose a configuration method and a controller. The configuration method is applied to a network on which detection is performed by using the TWAMP, and may include: receiving, by a controller, a request packet sent by an ingress network device, where the ingress network device is a network device through which a service flow flows into the network, and the request packet includes a destination IP address of the service flow; and determining, by the controller, based on the destination IP address, that the service flow is an X2 service flow, and sending configuration information for TWAMP detection to the ingress network device and an egress network device, where the egress network device is a network device through which the service flow flows out of the network.
    Type: Application
    Filed: June 28, 2021
    Publication date: October 21, 2021
    Inventors: Chunxia SUN, Yaokun ZHANG, Hailin WANG
  • Patent number: 11146484
    Abstract: A method, a device, and a system for deferring a switchback. A first network device sends a query packet to a second network device, detects, according to the query packet, whether a route from the second network device to a destination device is available after receiving the query packet, and when it is available, the second network device sends a query response packet to the first network device in order to trigger the first network device to switch back from a secondary route to a primary route. The technical solution provided reduces a wait-to-restore time of the switchback, ensures that service data transmitted from the first network device to the second network device can be transmitted to the destination device, and facilitates smooth transmission of the service data.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: October 12, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yaokun Zhang, Chunxia Sun
  • Publication number: 20210297433
    Abstract: A method for preventing a network attack, including: receiving, by a first network node in a Ethernet virtual private network (EVPN), a first packet, where the first packet carries a first media access control (MAC) address, and the first MAC address is a source MAC address of the first packet; and determining first MAC entry information, where the first MAC entry information includes a correspondence between the first MAC address, an identifier of the first MAC address, and egress port information of the first MAC address, and the identifier of the first MAC address is used to indicate that an egress port corresponding to the first MAC address is a trusted port. This method can reduce a risk that the EVPN breaks down caused by attacking the EVPN by an attacker.
    Type: Application
    Filed: June 3, 2021
    Publication date: September 23, 2021
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zhenxing YANG, Hailin WANG, Yaokun ZHANG
  • Publication number: 20210282891
    Abstract: The present application provides a docking device, a surgical holding device having such a docking device, and a method for connecting a surgical instrument to a holding arm of a surgical holding device. The docking device has a two-part adapter device connected at a proximal end to the holding arm and at a distal end to the surgical instrument, a first adapter with an elongated portion with a longitudinal axis and a connecting body present at a distal end of the first adapter, and a first engagement element with a terminal connection surface. The adapter device has a second adapter on the shaft of the surgical instrument and an engagement element facing the terminal connection surface in the docking situation. The terminal connection surface of the first adapter is inclined at a predetermined first angle in relation to its longitudinal axis, which is in a range from 30° to 90°.
    Type: Application
    Filed: February 11, 2021
    Publication date: September 16, 2021
    Inventors: Yaokun ZHANG, Kirsten KLEIN, Johannes FALLERT
  • Publication number: 20210200329
    Abstract: An image processing method and a flexible-screen terminal are provided. The method includes: receiving a first input by a flexible-screen terminal user, the first input being used for bending the flexible-screen terminal; in response to the first input, displaying a number N of images in a first display area of the flexible-screen terminal and displaying an operational control zone in a second display area of the flexible-screen terminal; receiving a second input by the user, the second input being used for selecting a number M of target images from the number N of images; in response to the second input, displaying the number M of target images selected by the second input in the operational control zone; displaying text information of the number M of target images in the first display area.
    Type: Application
    Filed: March 15, 2019
    Publication date: July 1, 2021
    Applicant: VIVO MOBILE COMMUNICATION CO.,LTD.
    Inventor: Yaokun ZHANG
  • Publication number: 20210184963
    Abstract: A communication method and a communications device are provided. The communication method includes: a first device receives a first BGP update packet from a second device. The first BGP update packet includes a route target and a first address family identifier. The first device determines a first route associated with the route target and the first address family identifier. The first device sends the first route to the second device.
    Type: Application
    Filed: February 26, 2021
    Publication date: June 17, 2021
    Inventors: Chunxia Sun, Yaokun Zhang
  • Publication number: 20210176117
    Abstract: This application provides a control plane device switching method. When a user plane device in the forwarding-control separation system detects that performance of communication between the user plane device and an active control plane device does not meet a normal communication condition, and performance of communication between the user plane device and a standby control plane device meets the normal communication condition, the user plane device may send a switching request to the standby control plane device. When detecting that a quantity of user plane devices that each send the switching request is greater than or equal to a first quantity threshold, the standby control plane device may indicate each user plane device in the forwarding-control separation system to switch to the standby control plane device, so that the standby control plane device can replace the active control plane device to work, thereby ensuring normal running of a user service.
    Type: Application
    Filed: February 22, 2021
    Publication date: June 10, 2021
    Inventors: Yaokun Zhang, Pingan Yang
  • Patent number: 10992570
    Abstract: A packet forwarding method, a device, and a system, where a first provider edge (PE) device separately sends request packets to a second PE device and a third PE device. The second PE device receives the two request packets separately using a primary pseudo wire (PW) and using a secondary PW, the third PE device, and a bypass PW, switches preferential forwarding statuses relative to the primary PW and the bypass PW to a balance state, and then, notifies the first PE device and the third PE device using a response packet. The first PE device switches preferential forwarding statuses relative to the primary PW and the secondary PW to the balance state based on the response packet. The third PE device switches a preferential forwarding status relative to the bypass PW to the balance state based on the response packet.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: April 27, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yaokun Zhang, Chunxia Sun, Juan Li
  • Publication number: 20210113297
    Abstract: The present application provides a sensor-based surgery set and a method for determining the position of a holding device for a surgical instrument. The surgery set includes at least one holding device, an initialization station, and a number of sensors. The initialization station has a number of sensor slots, wherein each sensor is assigned to one sensor slot and wherein the initialization station is coupled to a storage unit in which initialization information is assigned to each sensor slot. A number of sensor slots are arranged on the holding device, wherein each sensor slot is assigned to one sensor slot of the initialization station. In an initialization arrangement, a specific number of sensors is in engagement with the sensor slots of the initialization station and are coupled to the storage unit for initialization and data transmission. In use, however, the sensors are in engagement with the sensor slots.
    Type: Application
    Filed: October 8, 2020
    Publication date: April 22, 2021
    Inventors: Yaokun ZHANG, Chunman FAN
  • Publication number: 20210011813
    Abstract: This application disclose an information backup method and a related device, to ensure continuity of a user service. The method is applied to a communications system including a primary device, a secondary device, and a cloud device, and the method is performed by the primary device. The method includes: sending a first identity notification to the cloud device, where the first identity notification is a notification indicating that the primary device has a primary device identity; and uploading obtained first user information to the cloud device when determining that a communication status of the cloud device is normal, where the first user information is stored by the cloud device and provided to the secondary device, and the first user information is to-be-backed-up information of user equipment that gets online from the primary device when the communication status of the cloud device is normal.
    Type: Application
    Filed: September 29, 2020
    Publication date: January 14, 2021
    Inventors: Xiaoping Zhang, Yaokun Zhang, Quanxi Zhao
  • Patent number: 10769471
    Abstract: A system for holding an image display apparatus (60) for displaying an image captured by means of an image capturing apparatus (20) comprises a movable holding apparatus (70) for an alterable hold of the image display apparatus (60), a controllable drive device (72) for moving the holding apparatus (70), comprising a control signal input (74) for receiving a control signal, and a controller (40) comprising a signal input (42) for receiving a signal that represents an orientation or a change in the orientation of the viewing direction (28) of the image capturing apparatus (20) in space or that facilitates a determination of the orientation or the change in the orientation of the viewing direction (28) of the image capturing apparatus (20), and comprising a control signal output (47), couplable to the control signal input (74) of the controllable drive device (72), for providing a control signal for controlling the controllable drive device (72).
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: September 8, 2020
    Assignee: KARL STORZ SE & Co. KG
    Inventors: Chunman Fan, Johannes Fallert, Yaokun Zhang, Thorsten Ahrens, Sebastian Wagner
  • Publication number: 20200274793
    Abstract: A link fault detection method includes sending, by a first network device, data traffic to a second network device by using a plurality of first label switched paths (LSPs). The method also includes determining, by using each of the plurality of first LSPs within a preset period, whether a first link detection packet from the second network device is received. The method further includes determining an LSP of the plurality of first LSPs for which the first link detection packet is not received as a first faulty LSP. The method additionally includes calculating a first unavailability of the plurality of first LSPs based on the first faulty LSP. The method also includes triggering the plurality of first LSPs to stop transmitting the data traffic according to the first unavailability of the plurality of first LSPs.
    Type: Application
    Filed: May 13, 2020
    Publication date: August 27, 2020
    Inventors: Yaokun ZHANG, Juan LI
  • Publication number: 20200110956
    Abstract: A system for holding an image display apparatus (60) for displaying an image captured by means of an image capturing apparatus (20) comprises a movable holding apparatus (70) for an alterable hold of the image display apparatus (60), a controllable drive device (72) for moving the holding apparatus (70), comprising a control signal input (74) for receiving a control signal, and a controller (40) comprising a signal input (42) for receiving a signal that represents an orientation or a change in the orientation of the viewing direction (28) of the image capturing apparatus (20) in space or that facilitates a determination of the orientation or the change in the orientation of the viewing direction (28) of the image capturing apparatus (20), and comprising a control signal output (47), couplable to the control signal input (74) of the controllable drive device (72), for providing a control signal for controlling the controllable drive device (72).
    Type: Application
    Filed: October 2, 2019
    Publication date: April 9, 2020
    Inventors: Chunman FAN, Johannes FALLERT, Yaokun ZHANG, Thorsten AHRENS, Sebastian WAGNER
  • Publication number: 20190222509
    Abstract: A packet forwarding method, a device, and a system, where a first provider edge (PE) device separately sends request packets to a second PE device and a third PE device. The second PE device receives the two request packets separately using a primary pseudo wire (PW) and using a secondary PW, the third PE device, and a bypass PW, switches preferential forwarding statuses relative to the primary PW and the bypass PW to a balance state, and then, notifies the first PE device and the third PE device using a response packet. The first PE device switches preferential forwarding statuses relative to the primary PW and the secondary PW to the balance state based on the response packet. The third PE device switches a preferential forwarding status relative to the bypass PW to the balance state based on the response packet.
    Type: Application
    Filed: March 21, 2019
    Publication date: July 18, 2019
    Inventors: Yaokun Zhang, Chunxia Sun, Juan Li
  • Patent number: 10298464
    Abstract: The present application relates to a method and apparatus of predicting network performance, wherein the method includes: obtaining M performance parameter data of a link; calculating a cloud model digital feature of network performance of the link according to the M performance parameter data; calculating N predicted performance parameter data of the network performance of the link according to the cloud model digital feature; and raising a prediction alarm that the link has a risk of exceeding a limit if there is data exceeding a preset upper limit value in the N predicted performance parameter data, wherein M and N are preset positive integers. A change trend of network performance is analyzed according to real-time monitored data of the network performance of the link to predict future performance parameter data, and whether an alarm is raised and protection switching is performed is determined based on the prediction.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: May 21, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Yaokun Zhang
  • Publication number: 20170272358
    Abstract: A method, a device, and a system for deferring a switchback. A first network device sends a query packet to a second network device, detects, according to the query packet, whether a route from the second network device to a destination device is available after receiving the query packet, and when it is available, the second network device sends a query response packet to the first network device in order to trigger the first network device to switch back from a secondary route to a primary route. The technical solution provided reduces a wait-to-restore time of the switchback, ensures that service data transmitted from the first network device to the second network device can be transmitted to the destination device, and facilitates smooth transmission of the service data.
    Type: Application
    Filed: June 5, 2017
    Publication date: September 21, 2017
    Inventors: Yaokun Zhang, Chunxia Sun
  • Publication number: 20160191336
    Abstract: The present application relates to a method and apparatus of predicting network performance, wherein the method includes: obtaining M performance parameter data of a link; calculating a cloud model digital feature of network performance of the link according to the M performance parameter data; calculating N predicted performance parameter data of the network performance of the link according to the cloud model digital feature; and raising a prediction alarm that the link has a risk of exceeding a limit if there is data exceeding a preset upper limit value in the N predicted performance parameter data, wherein M and N are preset positive integers. A change trend of network performance is analyzed according to real-time monitored data of the network performance of the link to predict future performance parameter data, and whether an alarm is raised and protection switching is performed is determined based on the prediction.
    Type: Application
    Filed: March 4, 2016
    Publication date: June 30, 2016
    Inventor: Yaokun ZHANG