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    COORDINATED FREQUENCY DIVISION MULTIPLE ACCESS
    41.
    发明申请
    COORDINATED FREQUENCY DIVISION MULTIPLE ACCESS 有权

    公开(公告)号：US20250142555A1

    公开(公告)日：2025-05-01

    申请号：US18495910

    申请日：2023-10-27

    Applicant: Cisco Technology, Inc.

    Inventor： Malcolm M. Smith ,  Brian D. Hart

    IPC: H04W72/12 ,  H04W74/08

    Abstract: Coordinated Frequency Division Multiple Access (C-FDMA) may be provided. C-FDMA may include determining sub-channels of a channel for each of a plurality of Access Points (APs). The sub-channels may then be assigned to the plurality of APs. Transmit Opportunities (TxOps) may be scheduled for the plurality of APs on the sub-channels.

    MULTI-ACCESS POINT COORDINATION CONFIGURATION PROTOCOL
    42.
    发明申请
    MULTI-ACCESS POINT COORDINATION CONFIGURATION PROTOCOL 有权

    公开(公告)号：US20250119819A1

    公开(公告)日：2025-04-10

    申请号：US18483601

    申请日：2023-10-10

    Applicant: Cisco Technology, Inc.

    Inventor： Juan Carlos Zuniga ,  Malcolm M. Smith ,  Brian D. Hart ,  Jerome Henry

    IPC: H04W48/16 ,  H04W88/10

    Abstract: Multi-AP Coordination (MAPC) configuration protocol may be provided. MAPC modes supported by a plurality of Access Points (APs) may be discovered. A MAPC group of a sub-set of APs of the plurality of APs may be formed. Each AP of the sub-set of APs of the MAPC group may support at least one common MAPC mode. Roles including a leader and followers of the MAPC group may be advertised. A first AP of the MAPC group may be assigned as the leader and remaining APs of the MAPC group may be assigned as the followers.

    Over-the-wire access point coordination
    44.
    发明授权
    Over-the-wire access point coordination 有权

    公开(公告)号：US12160859B2

    公开(公告)日：2024-12-03

    申请号：US18332630

    申请日：2023-06-09

    Applicant: Cisco Technology, Inc.

    Inventor： Brian D. Hart ,  Malcolm M. Smith ,  Sanjay K. Katabathuni ,  Pooya Monajemi ,  Venkataprasad Chirreddy

    IPC: H04W72/1263 ,  H04W72/21 ,  H04W72/52 ,  H04W72/566

    Abstract: A method includes determining whether a first access point of a plurality of access points and a second access point of the plurality of access points should communicate simultaneously over a shared channel in a first network and in response to determining that one of the plurality of access points won contention of a transmission opportunity for the shared channel, dividing the transmission opportunity into a plurality of time slots. The method also includes scheduling transmissions of the first and second access points into the plurality of time slots according to the determination whether the first and second access points should communicate simultaneously over the shared channel and communicating, to the second access point and over a wired network or a second network different from the first network, an indication of whether the second access point should communicate during a first time slot of the plurality of time slots.

    HYBRID STAGGERED AND CONCURRENT SOUNDING FOR MULTI-ACCESS POINT COORDINATION
    45.
    发明申请
    HYBRID STAGGERED AND CONCURRENT SOUNDING FOR MULTI-ACCESS POINT COORDINATION 有权

    公开(公告)号：US20240380538A1

    公开(公告)日：2024-11-14

    申请号：US18459585

    申请日：2023-09-01

    Applicant: Cisco Technology, Inc.

    Inventor： Matthew A. Silverman ,  Malcolm M. Smith ,  Indermeet S. Gandhi ,  Brian D. Hart

    IPC: H04L5/00

    Abstract: Sounding for Multi-Access Point (AP) coordination and, specifically, hybrid staggered and concurrent sounding for multi-AP coordination may be provided. Performing hybrid staggered and concurrent sounding may include coordinating a plurality of APs to perform a hybrid sounding signal process, including determining a sounding frame transmission time and an order for the plurality of APs to stagger sounding signals, and performing the hybrid sounding signal process. An announcement signal may be sent to clients before performing the hybrid sounding signal process. Additionally, channel information may be received from the clients, and AP operation can be determined based on the channel information.

    Distributed overlapping basic service set scheduling techniques for increased spectral efficiency
    47.
    发明授权
    Distributed overlapping basic service set scheduling techniques for increased spectral efficiency 有权

    公开(公告)号：US11122594B2

    公开(公告)日：2021-09-14

    申请号：US16512251

    申请日：2019-07-15

    Applicant: Cisco Technology, Inc.

    Inventor： Gautam D. Bhanage ,  Brian D. Hart ,  David S. Kloper

    IPC: H04W72/12 ,  H04W88/08 ,  H04W80/08 ,  H04W72/04

    Abstract: Techniques for triggering multiple basic service sets (BSSs) to share resources for a coordinated transmission are described. One technique includes determining a first amount of data available to send in a first BSS and determining a second amount of data available to send in a second BSS. The first BSS and the second BSS form an overlapping BSS. An amount of resources in the first BSS that is available to share with the second BSS for a coordinated transmission from the first BSS and the second BSS is determined based on the first amount of data and the second amount of data. A frame that includes an indication of the amount of resources is generated and transmitted to at least one of the first BSS and the second BSS.

    Updating precoding matrix for MIMO transmissions
    48.
    发明授权
    Updating precoding matrix for MIMO transmissions 有权

    公开(公告)号：US10367550B2

    公开(公告)日：2019-07-30

    申请号：US15477620

    申请日：2017-04-03

    Applicant: Cisco Technology, Inc.

    Inventor： David S. Kloper ,  Mithat C. Dogan ,  Matthew A. Silverman ,  Brian D. Hart ,  Jiunming Huang

    IPC: H04B7/0426 ,  H04B7/0452

    Abstract: The present disclosure discloses that a device uses precoding to transmit independent data streams to existing users and additional independent data streams to one or more new users simultaneously. During a first transmission of a first one or more data streams that are precoded using a first precoding matrix, the device determines to transmit a second one or more data streams in a second transmission. Before the first transmission is complete, the device calculates a combined precoding matrix for precoding the first one or more data streams and the second one or more data streams. The device transmits the first one or more data streams in the first transmission and the second one or more data streams in the second transmission simultaneously using the combined precoding matrix.

    Computing transmit and receive filters for a network device
    50.
    发明授权
    Computing transmit and receive filters for a network device 有权

    公开(公告)号：US10256997B2

    公开(公告)日：2019-04-09

    申请号：US15381630

    申请日：2016-12-16

    Applicant: Cisco Technology, Inc.

    Inventor： Mithat C. Dogan ,  Brian D. Hart ,  Jiunming Huang ,  Matthew Silverman

    IPC: H04L25/02 ,  H04L25/03 ,  H04B7/0413 ,  H04W84/12 ,  H04W88/12

    Abstract: The embodiments herein use a factorization based technique for determining filter coefficients for a subset of the subcarriers in a wireless frequency band. Once the filter coefficients for the subset of the subcarriers are calculated, the network device uses these filter coefficients to identify the filter coefficients in a neighboring subcarrier. To do so, the network device uses pseudo-inverse iteration to convert the already calculated filter coefficients into filter coefficients for a neighboring subcarrier. The network device can repeat this process for the next set of neighboring subcarriers until all the filter coefficients have been calculated.

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