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    HYBRID RANGING
    31.
    发明申请
    HYBRID RANGING 有权

    公开(公告)号：US20220283258A1

    公开(公告)日：2022-09-08

    申请号：US17192434

    申请日：2021-03-04

    Applicant: Cisco Technology, Inc.

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

    IPC: G01S3/74 ,  H04W64/00 ,  G01S13/87

    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.

    COOPERATIVE SOUNDING BASED ON COHERENT SUBCARRIER ASSIGNMENTS
    33.
    发明申请
    COOPERATIVE SOUNDING BASED ON COHERENT SUBCARRIER ASSIGNMENTS 有权

    公开(公告)号：US20210282132A1

    公开(公告)日：2021-09-09

    申请号：US16810671

    申请日：2020-03-05

    Applicant: Cisco Technology, Inc.

    Inventor： Pooya MONAJEMI ,  Matthew A. SILVERMAN ,  Gautam D. BHANAGE ,  Paul J. STAGER ,  Fred J. ANDERSON

    IPC: H04W72/04

    Abstract: Techniques for efficient network probing are provided. Coherence data is received from a plurality of access points (APs), where the coherence data indicates, for each respective AP of the plurality of APs, coherence bandwidth for a plurality of subcarriers. A mapping is generated indicating, for each of the plurality of APs, sets of subcarriers that can be interchangeably sounded. Two or more APs of the plurality of APs that can jointly sound a first subcarrier of the plurality of subcarriers are then identified based on the mapping, and the first subcarrier is allocated to the identified two or more APs for future sounding.

    PERFORMING DISTRIBUTED DYNAMIC FREQUENCY SELECTION USING A SHARED CACHE
    34.
    发明申请
    PERFORMING DISTRIBUTED DYNAMIC FREQUENCY SELECTION USING A SHARED CACHE 有权

    公开(公告)号：US20210160198A1

    公开(公告)日：2021-05-27

    申请号：US16698573

    申请日：2019-11-27

    Applicant: Cisco Technology, Inc.

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

    IPC: H04L12/861 ,  H04L12/26 ,  H04L29/06 ,  G06F12/084 ,  G06F12/0864

    Abstract: Embodiments herein describe a group of APs that uses a shared radar cache to select a new channel after vacating a current channel when performing dynamic frequency selection (DFS). The group of APs 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. 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.

    NETWORK ASSISTED ROAMING FOR MULTILINK CLIENTS
    35.
    发明申请
    NETWORK ASSISTED ROAMING FOR MULTILINK CLIENTS 有权

    公开(公告)号：US20240388886A1

    公开(公告)日：2024-11-21

    申请号：US18319967

    申请日：2023-05-18

    Applicant: Cisco Technology, Inc.

    Inventor： Santosh B. KULKARNI ,  Vishal S. DESAI ,  Pooya MONAJEMI

    IPC: H04W8/12 ,  H04W36/08

    Abstract: Disclosed herein is an MLD AP that attempts to avoid roaming of STAs within its coverage area when one of the links of the STA is about fall out of the coverage area of the MLD AP. When the MLD STA moves in a way that puts one of its links on the verge of a coverage area, its servicing MLD AP attempts to reroute traffic to other in-range links of the STA if a TID-to-link mapping is in place that permits the rerouting. If no such TID-to-link mapping is present, then the MLD AP attempts to reassign traffic to one of the in-range links if one of the links has an acceptable quality of service and can handle the traffic on the out-of-range link. If these attempts fail, then the AP causes the MLD STA to roam to a nearby MLD AP.

    PREAMBLE EXTENSION FIELDS IN WAKEUP PPDUS
    36.
    发明公开
    PREAMBLE EXTENSION FIELDS IN WAKEUP PPDUS 审中-公开

    公开(公告)号：US20240334324A1

    公开(公告)日：2024-10-03

    申请号：US18194500

    申请日：2023-03-31

    Applicant: Cisco Technology, Inc.

    Inventor： Brian D. HART ,  Pooya MONAJEMI

    IPC: H04W52/02

    CPC classification number: H04W52/0216 ,  H04W52/0238

    Abstract: Embodiments herein describe waking up client devices using a physical layer protocol data unit (PPDU) with a preamble extension field with a length that permits the client device to wake up a higher power (or higher capability) radio. In one embodiment, a first portion of a preamble of the PPDU is received at the client device using a lower power (or lower capability) receiver. This triggers the client device to wake up its higher power receiver, which occurs while the client device receives the preamble extension field. At the end of the preamble extension field, the client device then receives the remaining portion of the PPDU using its higher power receiver.

    AP CONTROLLED PEER-TO-PEER MULTI-LINK OPERATIONS SIGNALLING
    38.
    发明公开
    AP CONTROLLED PEER-TO-PEER MULTI-LINK OPERATIONS SIGNALLING 审中-公开

    公开(公告)号：US20240163866A1

    公开(公告)日：2024-05-16

    申请号：US18193337

    申请日：2023-03-30

    Applicant: Cisco Technology, Inc.

    Inventor： Pooya MONAJEMI ,  Robert E. BARTON ,  Juan Carlos ZUNIGA ,  Malcolm M. SMITH ,  Jerome HENRY

    IPC: H04W72/1263 ,  H04W72/23

    CPC classification number: H04W72/1263 ,  H04W72/23

    Abstract: Techniques for improved peer-to-peer communication are provided. A wireless access point (AP) may initiate peer-to-peer communication between multilink peer-to-peer devices by sending a trigger frame addressed to the peer-to-peer devices to hand over a transmission opportunity (TXOP). The trigger frame is sent based on the AP's knowledge of the availability of the peer-to-peer devices for peer-to-peer communication. The trigger frame indicates a link to be used for the peer-to-peer communication. In response to receiving the trigger frame one or more of the peer-to-peer devices acknowledge the trigger frame, tune to the assigned link, and use the remaining portion of the TXOP for peer-to-peer communication.

    TECHNIQUES FOR REDUCED SIGNALING IN MULTILINK OPERATIONS
    39.
    发明公开
    TECHNIQUES FOR REDUCED SIGNALING IN MULTILINK OPERATIONS 审中-公开

    公开(公告)号：US20240015540A1

    公开(公告)日：2024-01-11

    申请号：US18052057

    申请日：2022-11-02

    Applicant: Cisco Technology, Inc.

    Inventor： Pooya MONAJEMI ,  Juan Carlos ZUNIGA

    IPC: H04W24/08 ,  H04L5/00 ,  H04W52/02

    CPC classification number: H04W24/08 ,  H04L5/0055 ,  H04W52/0212 ,  H04W88/06

    Abstract: Techniques for more efficient multilink operations are provided. A first multilink device (MLD) determines to use reduced signaling multilink operations (MLO) with a second MLD. The first MLD engages in reduced signaling MLO with the second MLD, comprising: transmitting, to the second MLD, a first set of data frames via a first link of a plurality of links, receiving, from the second MLD, an acknowledgement frame for the first set of data frames, and transmitting, to the second MLD, a second set of data frames without transmitting an initial control frame for the second set of data frames.

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