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    Network Device Movement Detection
    71.
    发明申请
    Network Device Movement Detection 有权

    公开(公告)号：US20250097896A1

    公开(公告)日：2025-03-20

    申请号：US18469761

    申请日：2023-09-19

    Applicant: Cisco Technology, Inc.

    Inventor： Jerome Henry ,  Ather Kanak ,  Ardalan Alizadeh ,  Joel Aller ,  Peiman Amini

    IPC: H04W64/00 ,  H04B17/318 ,  H04W24/08

    Abstract: Devices, systems, methods, and processes for detecting anomalous movements within network devices are described herein. Certain movements within networks devices are predictable and negligible. However, other movements may indicate a larger problem with the network, or network devices, especially when the network devices (e.g., access points) are within a stationary deployment. For example, a sudden movement of a network device may indicate that it has fallen, been moved, or is under threat of a physical attack. Many network devices are being deployed with various environmental sensors. These sensors can be utilized to detect movement of the network device. This can be done by evaluating the received signal strength indicator levels as well as the output of the environmental sensor. If an anomalous movement is detected, preventative actions can be taken such as rebooting or limiting access. This can be done on the network device or by a centralized management system.

    Joint GNSS-Terrestrial AP Geolocating
    72.
    发明申请
    Joint GNSS-Terrestrial AP Geolocating 有权

    公开(公告)号：US20250085441A1

    公开(公告)日：2025-03-13

    申请号：US18466659

    申请日：2023-09-13

    Applicant: Cisco Technology, Inc.

    Inventor： Peiman Amini ,  Ardalan Alizadeh ,  Jerome Henry ,  Arya Fallahi ,  Navid Reyhanian

    IPC: G01S19/46

    Abstract: Described herein are devices, systems, methods, and processes for estimating the geolocation of network devices by jointly utilizing pseudorange measurements from global navigation satellite system (GNSS) satellites and terrestrial-based ranging measurements between network devices. Each network device is equipped with a GNSS receiver that collects pseudorange data from each satellite link at time intervals. Terrestrial-based ranging measurements between network devices can also be collected. The receiver clock error can be accounted for at least in part by over-the-air time synchronization of network devices. To mitigate the impact of multipath and improve accuracy, pseudorange measurements with less than satisfactory quality metrics can be filtered out. In some embodiments, the geolocation of anchor network devices can be estimated with high accuracy first, and then the rest of the non-anchor network devices may be localized in a second-stage localization process.

    PHYSICAL LAYER TRANSMIT MODE FOR IMPROVING SIGNAL-TO-INTERFERENCE ON BACKSCATTER MESSAGE
    73.
    发明申请
    PHYSICAL LAYER TRANSMIT MODE FOR IMPROVING SIGNAL-TO-INTERFERENCE ON BACKSCATTER MESSAGE 有权

    公开(公告)号：US20240380454A1

    公开(公告)日：2024-11-14

    申请号：US18459519

    申请日：2023-09-01

    Applicant: Cisco Technology, Inc.

    Inventor： Matthew A. Silverman ,  Sivadeep Reddy Kalavakuru ,  Ardalan Alizadeh

    IPC: H04B7/06 ,  H04B7/22

    Abstract: Improving backscattering and, specifically, a physical Layer transmit mode for improving the Signal-to-Interference Ratio (SIR) of backscatter signals may be provided. A transmitter may determine a Backscatter Device (BKD) to send a transmission to for backscattering. The transmitter may determine a width of a puncture in the transmission. Next, the transmitter may transmit the transmission to the BKD. The transmitter may receive feedback from a receiver about decoding a backscattered signal generated using the transmission. The transmitter may adjust the width of the puncture for a subsequent transmission based on the feedback.

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