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    Hybrid Non-Line-Of-Sight Detection in Wireless Networks
    1.
    发明申请
    Hybrid Non-Line-Of-Sight Detection in Wireless Networks 有权

    公开(公告)号：US20250085436A1

    公开(公告)日：2025-03-13

    申请号：US18466166

    申请日：2023-09-13

    Applicant: Cisco Technology, Inc.

    Inventor： Peiman Amini ,  Ardalan Alizadeh ,  Jerome Henry ,  Rabe Arshad

    IPC: G01S19/22 ,  G01S19/48

    Abstract: Devices, systems, methods, and processes for hybrid line-of-sight (LOS)/non-line of sight (NLOS) detection are described herein. To facilitate co-existence and co-operation of a fixed network and a wireless network sharing a same frequency band without interference, a device in the wireless network can be configured to perform automatic frequency coordination (AFC). The device can accurately determine a geolocation of the device by utilizing global navigation satellite system (GNSS) data and light detection and ranging (LiDAR) data. The device can also determine whether the fixed station is in the LOS by utilizing the GNSS data and the LiDAR data. The device can further correct the geolocation and improve an accuracy of the LOS/NLOS detection by using both: the GNSS data and the LiDAR data simultaneously. The device can further control an output power when the fixed station is in the LOS, thereby avoiding the interference.

    RSSI location tracking via radio scanning for triggered OFDMA uplink
    2.
    发明授权
    RSSI location tracking via radio scanning for triggered OFDMA uplink 有权

    公开(公告)号：US12231987B2

    公开(公告)日：2025-02-18

    申请号：US17555598

    申请日：2021-12-20

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Matthew Aaron Silverman ,  John Matthew Swartz ,  Ardalan Alizadeh ,  Jerome Henry

    IPC: H04W4/029 ,  H04B17/318 ,  H04W84/12

    Abstract: This technology allows for determining the location of client devices via radio scanning for triggered orthogonal frequency-division multiple access (“OFDMA”) uplinks. Access points (“APs”) are configured for OFDMA transmissions. A first AP transmits a trigger frame on particular channel to stations in the wireless network. Neighboring APs scan channels for trigger frames (“TF”). Upon detection of a TF, neighboring APs associate a station identifier with a frequency allocation, or resource unit, in the TF. The neighboring APs receive an OFDMA uplink from the stations, determine a received signal strength indicator (“RSSI”) value for each frequency allocation in the OFDMA uplink, and transmit the RSSI values with the associated station identifier to the first AP. The first AP determines the location of each station by mapping a distance value to the RSSI values.

    Restricted target wait time interference detection and management
    3.
    发明授权
    Restricted target wait time interference detection and management 有权

    公开(公告)号：US12219477B2

    公开(公告)日：2025-02-04

    申请号：US17816877

    申请日：2022-08-02

    Applicant: Cisco Technology, Inc.

    Inventor： Matthew Aaron Silverman ,  Pooya Monajemi ,  Ardalan Alizadeh ,  Sivadeep Reddy Kalavakuru

    IPC: H04W52/02 ,  H04W52/28 ,  H04W72/0446 ,  H04W74/0816

    Abstract: Network traffic interference detection and management may be provided. An infringement event by an infringing Access Point (AP) on a Restricted Target Wake Time (rTWT) transmission opportunity (TxOp) associated with a victim AP may be detected, and information associated with the infringement event may be added to an infringement list, wherein the information includes a MAC address associated with the infringing AP. A controller, may receive the infringement list and notify the infringement event to the infringing AP. The infringing AP may determine whether a transmission associated with the infringement event is low latency and high priority. When the transmission is not low latency and high priority the infringing AP may modify future transmissions based on the notification. When the transmission is low latency and high priority the infringing AP may notify the controller that the transmission is low latency and high priority. The controller may then create a negotiation between the victim AP and the infringing AP, wherein the negotiation comprises managing future transmissions of the victim AP and the infringing AP.

    Adaptive client steering in an access point using a monitoring radio
    4.
    发明授权
    Adaptive client steering in an access point using a monitoring radio 有权

    公开(公告)号：US12003308B2

    公开(公告)日：2024-06-04

    申请号：US17443474

    申请日：2021-07-27

    Applicant: Cisco Technology, Inc.

    Inventor： Sivadeep R. Kalavakuru ,  Ardalan Alizadeh ,  Fred J. Anderson ,  John M. Blosco

    IPC: H04B7/08 ,  H04W24/02

    CPC classification number: H04B7/0817 ,  H04B7/0857 ,  H04B7/0865 ,  H04B7/0882 ,  H04W24/02

    Abstract: In one embodiment, a system for allocating clients between radios of an access point is disclosed. The system includes a first antenna coupled to a first radio, a second antenna coupled to a second radio, and a monitoring radio coupled to the first antenna and second antenna. The system includes computer-readable instructions that cause the system to receive at the monitoring radio, a first client attribute from each of a plurality of first client devices, and a second client attribute from each of a plurality of second client devices, and provide each aforementioned attribute to an optimization function. The system determines, with the optimization function, that one of the first radio and second radio will optimize performance for at least one device of the plurality of first client devices and second client devices and steer the at least one device accordingly.

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