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公开(公告)号：US11947033B2
公开(公告)日：2024-04-02
申请号：US16863002
申请日：2020-04-30
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Jean-Francois Gagnon , Andre Beaudin , Myung Cheol Kim
IPC: G01S7/292 , G01S7/02 , G01S7/288 , H04W72/0453
CPC classification number: G01S7/2927 , G01S7/021 , G01S7/288 , H04W72/0453
Abstract: A method for improving dynamic frequency selection (DFS) includes receiving, by an access point, a plurality of pulses in a DFS channel of the access point, determining, by the access point, a plurality of characteristics of the plurality of pulses, varying, by the access point, a threshold for radar detection, and determining, by the access point and based on at least one of the plurality of characteristics, whether the plurality of pulses are radar.
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公开(公告)号：US20220244345A1
公开(公告)日：2022-08-04
申请号：US17167617
申请日：2021-02-04
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Jean-Francois Gagnon , Myung Cheol Kim , Andre Beaudin
Abstract: Systems and methods are provided for learning radio frequency pulses transmitted at various frequencies in a wireless environment, including false radar signals and actual radar. For example, the system can keep a list of radio frequency pulse characteristics detected by access points (APs) but ignored when not declared a radar. The detected radio frequency pulse can be compared with those on the list and may be added to the deny-list if not radar. The AP learns what intervals are normal for the communication environment and if the noise someday looks like a real radar (but it not actually a radar), it will not be classified as radar because it is on the deny-list.
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公开(公告)号：US11165530B1
公开(公告)日：2021-11-02
申请号：US16863079
申请日：2020-04-30
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Jean-Francois Gagnon , Andre Beaudin , Myung Cheol Kim
IPC: H04K3/00
Abstract: A method for determining presence of a radar includes receiving a plurality of bursts in a dynamic frequency selection (DFS) channel of an access point, storing the plurality of bursts in a queue, in response to the queue comprising a threshold amount of bursts, determining a timespan of a first burst in the queue to a last burst in the queue, partitioning the timespan into at least a first group and a second group, determining a first number of bursts present in the first group and a second number of bursts present in the second group, in response to a difference between the first number of bursts and the second number of bursts equaling more than one, determining the radar is not present, and in response to the difference between the first number of bursts and the second number of bursts equaling one or less, determining radar is present.
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公开(公告)号：US11852743B2
公开(公告)日：2023-12-26
申请号：US17167617
申请日：2021-02-04
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Jean-Francois Gagnon , Myung Cheol Kim , Andre Beaudin
CPC classification number: G01S7/021 , G01S7/023 , G01S7/292 , H04W72/535 , H04W74/0816
Abstract: Systems and methods are provided for learning radio frequency pulses transmitted at various frequencies in a wireless environment, including false radar signals and actual radar. For example, the system can keep a list of radio frequency pulse characteristics detected by access points (APs) but ignored when not declared a radar. The detected radio frequency pulse can be compared with those on the list and may be added to the deny-list if not radar. The AP learns what intervals are normal for the communication environment and if the noise someday looks like a real radar (but it not actually a radar), it will not be classified as radar because it is on the deny-list.
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公开(公告)号：US11543510B2
公开(公告)日：2023-01-03
申请号：US16890096
申请日：2020-06-02
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Andre Beaudin , Jean-Francois Gagnon , Mathieu Mercier
Abstract: Embodiments are directed to a dynamic radar detection threshold for stateful dynamic frequency selection (DFS). An embodiment of a storage medium includes instructions to operations including estimate a duty time of transmission of wireless signals by an access point, the access point to provide Wi-Fi communication, the wireless signals being communicated on a DFS channel of the access point, adapt, based at least in part on the duty time of transmission, a threshold of radar signals to indicate detection of a radar signal at the access point on the DFS channel, and perform analysis of received wireless signals on the DFS channel at the access point to detect the radar signal using the adapted threshold of radar signals.
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公开(公告)号：US20210373143A1
公开(公告)日：2021-12-02
申请号：US16890096
申请日：2020-06-02
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Andre Beaudin , Jean-Francois Gagnon , Mathieu Mercier
Abstract: Embodiments are directed to a dynamic radar detection threshold for stateful dynamic frequency selection (DFS). An embodiment of a storage medium includes instructions to operations including estimate a duty time of transmission of wireless signals by an access point, the access point to provide Wi-Fi communication, the wireless signals being communicated on a DFS channel of the access point, adapt, based at least in part on the duty time of transmission, a threshold of radar signals to indicate detection of a radar signal at the access point on the DFS channel, and perform analysis of received wireless signals on the DFS channel at the access point to detect the radar signal using the adapted threshold of radar signals.
