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    BYPASSING RADAR IN WIDE DYNAMIC FREQUENCY SELECTION (DFS) CHANNELS UTILIZING PUNCTURING
    2.
    发明申请
    BYPASSING RADAR IN WIDE DYNAMIC FREQUENCY SELECTION (DFS) CHANNELS UTILIZING PUNCTURING 审中-公开

    公开(公告)号：WO2020014110A1

    公开(公告)日：2020-01-16

    申请号：PCT/US2019/040781

    申请日：2019-07-08

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： CIZDZIEL, Benjamin ,  HART, Brian, D. ,  MONAJEMI, Pooya ,  KLOPER, David

    IPC: H04W16/14

    Abstract: Bypassing radar in wide Dynamic Frequency Selection (DFS) channels utilizing puncturing may be provided. A first client device may be classified as eligible for puncturing and a second client device may be classified as not eligible for puncturing. Next, it may be determined that a subchannel in a bandwidth range should not be used. Then, in response to determining that the subchannel in the bandwidth range should not be used, the first client device may be steered to a first subset of the bandwidth range and the second client device may be steered to a second subset of the bandwidth range. The second subset of the bandwidth range may be smaller than the first subset of the bandwidth range.

    PERFORMING DISTRIBUTED DYNAMIC FREQUENCY SELECTION USING A SHARED CACHE
    5.
    发明申请
    PERFORMING DISTRIBUTED DYNAMIC FREQUENCY SELECTION USING A SHARED CACHE 审中-公开

    公开(公告)号：WO2021108260A1

    公开(公告)日：2021-06-03

    申请号：PCT/US2020/061552

    申请日：2020-11-20

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： KULKARNI, Santosh B. ,  DESAI, Vishal S. ,  MONAJEMI, Pooya ,  CHOI, Young Il ,  SILVERMAN, Matthew A.

    IPC: H04W16/14 ,  H04W16/10

    Abstract: Embodiments herein describe a group of APs (115A-115D) that uses a shared radar cache (120A) to select a new channel after vacating a current channel when performing dynamic frequency selection (DFS). The group of APs (115A-115D) can set aside memory to store status information about the DFS channels in the frequency band. For example, when one AP detects a radar event (and has to vacate a DFS channel), the AP updates an entry for that channel in the shared radar cache (120A). The APs can also query the cache to determine a new channel after vacating its current channel. That is, the shared radar cache may store the most recent radar events occurring in a channel. In this manner, the APs can select a new channel that has little or no recent radar events, which reduces the likelihood the AP will have to vacate the new channel.

    HYBRID RANGING
    6.
    发明申请
    HYBRID RANGING 审中-公开

    公开(公告)号：WO2022187143A1

    公开(公告)日：2022-09-09

    申请号：PCT/US2022/018155

    申请日：2022-02-28

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： HENRY, Jerome ,  BARTON, Robert, E. ,  SILVERMAN, Matthew, Aaron ,  DESAI, Vishal, Satyendra ,  MONAJEMI, Pooya

    IPC: H04W4/02 ,  G01S5/02 ,  H04W64/00 ,  H04W84/12

    Abstract: Hybrid ranging may be provided. A coverage environment may be divided into a plurality of areas and a corresponding plurality accuracy gradients for each of the plurality of areas may be determined. Passive ranging may be implemented for ones of the plurality of areas that have a high accuracy gradient and one of a high client device density and low client device movement. Active ranging may be implemented for ones of the plurality of areas that have a low client device density. Based on at least one of a level of client device density and movement speed of client devices, switching may be performed between passive ranging and active ranging for ones of the plurality of areas that have at least one of high client device density and high client device movement.

    OPPORTUNISTIC OUT-OF-LINK CHANNEL SOUNDING FOR MULTI-LINK DEVICES
    7.
    发明申请
    OPPORTUNISTIC OUT-OF-LINK CHANNEL SOUNDING FOR MULTI-LINK DEVICES 审中-公开

    公开(公告)号：WO2022125450A1

    公开(公告)日：2022-06-16

    申请号：PCT/US2021/062029

    申请日：2021-12-06

    Applicant: CISCO TECHNOLOGY, INC. [US]/[US]

    Inventor： RAVICHANDRAN, Arunkumar ,  MONAJEMI, Pooya ,  ALIZADEH, Ardalan

    IPC: H04L25/02

    Abstract: Out-of-link channel sounding using an out-of-band channel sounding link for multi-link devices (MLDs) in a wireless network may be provided. An Access Point (AP) may establish a first Wireless Communication Link (WCL) with a Multi-link Device (MLD). The AP may also establish a second WCL with the MLD. After establishing the first WCL, the AP may transmit a sounding trigger to the MLD on the first WCL. After transmission of the sounding trigger to the MLD on the first WCL, AP may transmit a Channel State Information (CSI) inquiry to the MLD on the second WCL. AP may receive a channel state quantification from the MLD on the second WCL in response to the CSI inquiry.

    SPECTRUM MANAGEMENT FOR COEXISTENCE OF HETEROGENEOUS WIRELESS TECHNOLOGIES
    8.
    发明申请
    SPECTRUM MANAGEMENT FOR COEXISTENCE OF HETEROGENEOUS WIRELESS TECHNOLOGIES 审中-公开

    公开(公告)号：WO2021141824A1

    公开(公告)日：2021-07-15

    申请号：PCT/US2020/067663

    申请日：2020-12-31

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： KULKARNI, Santosh, Babaji ,  DESAI, Vishal, Satyendra ,  MONAJEMI, Pooya ,  CHOI, Young II

    IPC: H04W16/14 ,  H04W84/12 ,  H04B17/318 ,  H04W48/10 ,  H04W72/0453 ,  H04W72/082 ,  H04W72/085

    Abstract: Spectrum management for coexistence of heterogeneous wireless technologies may be provided. A first Radio Frequency (RF) event metric may be received from a first service end point. The first RF event metric may comprise a time a first event occurred. A second RF event metric may be received from a second service end point. The second RF event metric may comprise a time a second event occurred. Then it may be determined that the time the first event occurred and the time the second event occurred are substantially congruent. Next, in response to determining that the time the first event occurred and the time the second event occurred are substantially congruent, the first service end point and the second service end point may be grouped in a first RF group thereby allowing frequency re-use across similar RF groups. Then different channels may be assigned to the first service end point and the second service end point.

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