知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

27 records (took 0.014 seconds)

    SASE based method of preventing exhausting attack in wireless mesh networks
    1.
    发明授权
    SASE based method of preventing exhausting attack in wireless mesh networks 有权

    公开(公告)号：US12149548B2

    公开(公告)日：2024-11-19

    申请号：US17515014

    申请日：2021-10-29

    Applicant: Cisco Technology, Inc.

    Inventor： Lele Zhang ,  Li Zhao ,  Chuanwei Li ,  Feiliang Wang

    IPC: H04L9/40 ,  G06F18/214 ,  G06N20/00 ,  H04L45/00 ,  H04L45/02 ,  H04W12/121 ,  H04W12/00

    Abstract: The present disclosure provides a hierarchical method of identifying unauthorized network traffic in a network by applying, at one of a first plurality of nodes of a network, a first level of network traffic analysis to identify received network traffic as one of authorized or suspicious network traffic, the one of the first plurality of nodes having a first path for traffic routing and a second path to one of a second plurality of nodes of the network, the second path being used for forwarding the suspicious network traffic to the one of the second plurality of nodes; tagging the received network traffic as the suspicious network traffic; and sending the suspicious network traffic to the one of the second plurality of nodes over the second path, the second network node applying a second level of network analysis to determine if the received network traffic is authorized, unauthorized or remains suspicious.

    Mesh network device adjusting broadcast dwell interval based on trendline prediction of future throughput
    2.
    发明授权
    Mesh network device adjusting broadcast dwell interval based on trendline prediction of future throughput 有权

    公开(公告)号：US11159409B2

    公开(公告)日：2021-10-26

    申请号：US16419124

    申请日：2019-05-22

    Applicant: Cisco Technology, Inc.

    Inventor： Lele Zhang ,  Li Zhao ,  Chuanwei Li ,  Feiliang Wang

    IPC: H04L12/26 ,  H04W84/18 ,  H04L12/751 ,  H04L12/24 ,  H04W4/06

    Abstract: In one embodiment, a method comprises: determining, by a network device in a wireless data network, a past throughput of broadcast data packets transmitted at broadcast transmission intervals of a prescribed broadcast schedule over a selected measurement interval, the broadcast transmission intervals each adjacent to unicast transmission intervals allocated in the wireless data network, each of the broadcast transmission intervals in the prescribed broadcast schedule initially set at a prescribed duration; predicting, by the network device, a predicted throughput of a future broadcast transmission interval of the prescribed broadcast schedule, for transmission of at least a future broadcast data packet, based on executing a trendline prediction of the predicted throughput using the past throughput over the selected measurement interval; and adjusting the corresponding prescribed duration of the future broadcast transmission interval, relative to the corresponding adjacent unicast transmission interval following the future broadcast transmission interval, based on the predicted throughput.

    Secure device management
    3.
    发明授权
    Secure device management 有权

    公开(公告)号：US11677630B2

    公开(公告)日：2023-06-13

    申请号：US17246301

    申请日：2021-04-30

    Applicant: Cisco Technology, Inc.

    Inventor： Lele Zhang ,  Li Zhao ,  Haibo Dong ,  Yihua Dai

    IPC: H04L41/12 ,  H04L9/40

    CPC classification number: H04L41/12 ,  H04L63/062 ,  H04L63/065 ,  H04L63/0892

    Abstract: Techniques are described for managing devices using multiple virtual personal area networks (VPANs). A border router can receive a first request to join a network from a first device. The first device may be assigned to a first virtual personal area network (VPAN), which has an associated first group temporal key (GTK). The first GTK can be distributed to the first virtual device. The border router can also receive a second request to join a network from a second device. The second device may be assigned to a second VPAN, which has an associated second GTK. The second GTK can be distributed to the second virtual device.

    LOCATION-AWARE ROUTING FOR EAST-WEST DATA TRAFFIC
    4.
    发明申请
    LOCATION-AWARE ROUTING FOR EAST-WEST DATA TRAFFIC 有权

    公开(公告)号：US20210297342A1

    公开(公告)日：2021-09-23

    申请号：US16825171

    申请日：2020-03-20

    Applicant: Cisco Technology, Inc.

    Inventor： Huimin She ,  Lele Zhang ,  Shiwei Gao ,  Xiaoguang Jason Chen ,  Chuanwei Li

    IPC: H04L12/721 ,  H04L12/24 ,  H04L12/751

    Abstract: Techniques for utilizing Software-Defined Field-Area Network (SD-FAN) controllers to receive a geographic location and transmission power of individual nodes and generate a geographic location topology of a Field-Area Network (FAN) to provide nodes with location-aware route paths for data transmission. One or more SD-FAN controller(s) may maintain a geographic location database to store the geographic location and transmission power of the individual nodes. Each node may utilize a Destination Address Object to advertise its geographic location and transmission power to the SD-FAN controller. The SD-FAN controller(s) may utilize the geographic location table to generate the geographic location topology of the FAN and determine a location-aware route path for optimized data transmission between nodes in the FAN.

    Dynamic suspension of network operations by root for improved power outage recovery in low power and lossy network
    5.
    发明授权
    Dynamic suspension of network operations by root for improved power outage recovery in low power and lossy network 有权

    公开(公告)号：US11050619B1

    公开(公告)日：2021-06-29

    申请号：US16782958

    申请日：2020-02-05

    Applicant: Cisco Technology, Inc.

    Inventor： Li Zhao ,  Pascal Thubert ,  Huimin She ,  Lele Zhang

    IPC: H04L12/24 ,  H04L29/12 ,  H04L12/753 ,  H04W84/18 ,  H04L29/08 ,  H04W8/00 ,  H04W4/70 ,  H04W4/80 ,  H04W4/38

    Abstract: In one embodiment, a method comprises: detecting, by a root network device in a low power and lossy network (LLN) operating in a downward-routing mode, an outage among at least a substantial number of LLN devices in the LLN; initiating, by the root network device, a dynamic suspension of network operations in the LLN during the outage, including causing existing Internet Protocol (IP) addresses of all the LLN devices to be maintained during the outage, and causing all the LLN devices to limit transmissions to Power Outage Notification (PON) messages, Power Restoration Notification (PRN) messages, or minimal-bandwidth data packets, based on the root network device switching the LLN from the downward-routing mode to a collection-only mode; and selectively restoring, by the root network device, the LLN to the downward-routing mode in response to detecting PRN messages from at least substantially all the substantial number of LLN devices.

    Detection and deduction of urgent messages in low power and lossy networks
    6.
    发明授权
    Detection and deduction of urgent messages in low power and lossy networks 有权

    公开(公告)号：US10904778B1

    公开(公告)日：2021-01-26

    申请号：US16808887

    申请日：2020-03-04

    Applicant: Cisco Technology, Inc.

    Inventor： Lele Zhang ,  Akram Ismail Sheriff ,  Chuanwei Li ,  Wenjia Wu

    IPC: H04M11/04 ,  H04W24/04 ,  H04W4/12 ,  H04W40/22 ,  G06F1/30 ,  G06N20/00 ,  H04W8/00 ,  H04W40/24 ,  H04W84/18 ,  G06Q50/06

    Abstract: Techniques and mechanisms for detecting and deducing of urgent messages in low-power and lossy networks (LLNs) using a correlation analysis of the nodes within a network and machine learning (ML) models. Utilizing these techniques, a field network director (FND) of the network can determine neighboring devices within the network. ML models may be utilized to determine that based upon receipt of a power outage notification (PON) message and/or a power restoration notification (PRN) message from nodes, neighboring nodes of the nodes may also have suffered a power outage and/or a subsequent power restoration, even if the FND did not receive a corresponding PON message and/or a corresponding PRN message from the neighboring nodes of the network. Thus, loss of power and subsequent power restoration may be handled for large numbers of neighboring nodes within the network, even when only a few PON messages and/or subsequent PRN messages are received.

Patent Agency Ranking