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公开(公告)号：US20210105668A1
公开(公告)日：2021-04-08
申请号：US16594316
申请日：2019-10-07
Applicant: Cisco Technology, Inc.
Inventor： Pascal Thubert , Patrick Wetterwald , Eric Levy-Abegnoli , Xiaoguang Jason Chen
IPC: H04W28/22
Abstract: In one embodiment, a device in a mesh network joins a source-destination oriented partial directed acyclic graph (SDO-PDAG) between a source node and a destination node in the network. The device receives operations, administration and maintenance (OAM) packets flooded along reverse paths of the SDO-PDAG. The device determines, based on the received OAM packets, packet drop rate (PDR) capacities of different paths between the device and the destination node. The device replicates a data packet sent from the source node to the destination node along two or more of the paths between the device and the destination node, based on the determined PDR capacities of those paths.
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公开(公告)号：US11523314B2
公开(公告)日：2022-12-06
申请号：US17142638
申请日：2021-01-06
Applicant: Cisco Technology, Inc.
Inventor： Akram Ismail Sheriff , Xiaoguang Jason Chen , Jun Liu , Robert Edgar Barton , Jerome Henry
Abstract: In one embodiment, a device in a wireless network receives telemetry data from a plurality of autonomous vehicles. The telemetry data is indicative of radio signal quality metrics experienced by the vehicles at a particular location over time. The device forms an array of wireless roaming thresholds by applying regression to the telemetry data. The device computes an optimum roaming threshold from the array of wireless roaming thresholds to be used by the vehicles when approaching the location. The device triggers, based on the computed optimum threshold, one or more of the autonomous vehicles to initiate access point roaming when approaching the particular location.
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公开(公告)号：US11361080B2
公开(公告)日：2022-06-14
申请号：US16846891
申请日：2020-04-13
Applicant: Cisco Technology Inc.
Inventor： Wenwei Weng , Nag Avadhanam , Xiaoguang Jason Chen , Ning Zhao , Christopher A. Stone
Abstract: The present disclosure is directed to reducing the secure boot time of software images and includes one or more processors and one or more computer-readable non-transitory storage media coupled to the one or more processors and comprising instructions that, when executed by the one or more processors, cause one or more components to perform operations including identifying a software image for a first secure boot, the software image stored in a persistent storage and comprising a kickstart software package and a system software package, fetching the software image, including the kickstart software package and the system software package, from the persistent storage to a memory, verifying one or more digital signatures associated with the software image, booting the kickstart software package of the software image from the memory, and staging the system software package in the persistent storage.
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公开(公告)号：US11070526B2
公开(公告)日：2021-07-20
申请号：US16156176
申请日：2018-10-10
Applicant: Cisco Technology, Inc.
Inventor： Pascal Thubert , Xiaoguang Jason Chen , Samuel Rene Andre Pasquier , Ways Hassas , Christopher Scott Atherton Cheadle
Abstract: In one embodiment, a method includes: obtaining a multi-protocol schedule, wherein the multi-protocol schedule includes scheduling information characterizing packets associated with a plurality of wireless protocols, wherein each of the plurality of wireless protocols is associated with a respective virtual gateway of a plurality of virtual gateways; detecting, by a wireless transceiver, a first packet related to a first wireless protocol of the plurality of wireless protocols based on the multi-protocol schedule; and transmitting, by the wireless transceiver, the first packet related to the first wireless protocol to a first virtual gateway of the plurality of virtual gateways. According to some embodiments, the method is performed by a device (e.g., a MAC preprocessor) that includes a wireless transceiver, one or more processors, and non-transitory memory.
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公开(公告)号：US20210127309A1
公开(公告)日：2021-04-29
申请号：US17142638
申请日：2021-01-06
Applicant: Cisco Technology, Inc.
Inventor： Akram Ismail Sheriff , Xiaoguang Jason Chen , Jun Liu , Robert Edgar Barton , Jerome Henry
Abstract: In one embodiment, a device in a wireless network receives telemetry data from a plurality of autonomous vehicles. The telemetry data is indicative of radio signal quality metrics experienced by the vehicles at a particular location over time. The device forms an array of wireless roaming thresholds by applying regression to the telemetry data. The device computes an optimum roaming threshold from the array of wireless roaming thresholds to be used by the vehicles when approaching the location. The device triggers, based on the computed optimum threshold, one or more of the autonomous vehicles to initiate access point roaming when approaching the particular location.
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Patent Agency Ranking
公开(公告)号：US10708756B2
公开(公告)日：2020-07-07
申请号：US16214444
申请日：2018-12-10
Applicant: Cisco Technology, Inc.
Inventor： Linyu Lu , Jun Liu , Xia Ke , Xiaoguang Jason Chen
Abstract: An apparatus includes a first wireless bridge device configured to transmit signals to and receive signals from wireless network access points located along a pathway, and a second wireless bridge device configured to transmit signals to and receive signals from the wireless network access points. The first wireless bridge device and the second wireless bridge device are coupled to and communicate with each other. When the first wireless bridge device is wirelessly connected to a first access point and about to initiate a roaming mode to attempt to wirelessly connect to a second access point, the first wireless bridge device notifies the second wireless bridge device of the initiating of the roaming mode and determines whether the second wireless bridge device is in the roaming mode while the apparatus is moving along the pathway.
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公开(公告)号：US10194308B2
公开(公告)日：2019-01-29
申请号：US15472417
申请日：2017-03-29
Applicant: Cisco Technology, Inc.
Inventor： Linyu Lu , Jun Liu , Xia Ke , Xiaoguang Jason Chen
Abstract: An apparatus includes a first wireless bridge device configured to transmit signals to and receive signals from wireless network access points located along a pathway, and a second wireless bridge device configured to transmit signals to and receive signals from the wireless network access points. The first wireless bridge device and the second wireless bridge device are coupled to and communicate with each other. When the first wireless bridge device is wirelessly connected to a first access point and about to initiate a roaming mode to attempt to wirelessly connect to a second access point, the first wireless bridge device notifies the second wireless bridge device of the initiating of the roaming mode and determines whether the second wireless bridge device is in the roaming mode while the apparatus is moving along the pathway.
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公开(公告)号：US11265763B2
公开(公告)日：2022-03-01
申请号：US16594316
申请日：2019-10-07
Applicant: Cisco Technology, Inc.
Inventor： Pascal Thubert , Patrick Wetterwald , Eric Levy-Abegnoli , Xiaoguang Jason Chen
Abstract: In one embodiment, a device in a mesh network joins a source-destination oriented partial directed acyclic graph (SDO-PDAG) between a source node and a destination node in the network. The device receives operations, administration and maintenance (OAM) packets flooded along reverse paths of the SDO-PDAG. The device determines, based on the received OAM packets, packet drop rate (PDR) capacities of different paths between the device and the destination node. The device replicates a data packet sent from the source node to the destination node along two or more of the paths between the device and the destination node, based on the determined PDR capacities of those paths.
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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.
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公开(公告)号：US10979918B2
公开(公告)日：2021-04-13
申请号：US16195987
申请日：2018-11-20
Applicant: Cisco Technology, Inc.
Inventor： Robert Edgar Barton , Jerome Henry , Xiaoguang Jason Chen , Rupak Chandra , Ibrahim Mortada
Abstract: In one embodiment, a method comprises identifying, by an apparatus, a mesh instability source device that adds a substantial instability influence that substantially degrades network communications in a mesh network, including: determining, for each mesh network device in the mesh network, a corresponding node stability contribution that identifies a long-term capability of the corresponding mesh network device to provide reliable communications for other mesh network devices in the mesh network, and determining a corresponding influence of the node stability contribution on child mesh network devices relying on the corresponding mesh network device for connectivity in the mesh network, and identifying the mesh instability source device as having a corresponding worst influence of the node stability contribution in the mesh network; and eliminating the substantial instability influence based on determining a remediation solution, and causing the remediation solution to be implemented for the mesh instability source device.
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