公开(公告)号：US11589353B2

公开(公告)日：2023-02-21

申请号：US17009672

申请日：2020-09-01

Applicant: Cisco Technology, Inc.

Inventor： Malcolm M. Smith ,  Venkataprasad Chirreddy ,  Guru Prasanna Gopalakrishnan ,  James F. Florwick

IPC: H04L12/28 ,  H04W72/0453 ,  H04W72/08 ,  H04J1/16 ,  H04W84/12

Abstract: Techniques for dynamic bandwidth expansion are provided. A first set of channel quality metrics is collected, by an access point (AP) communicating using a first bandwidth, for an expanded bandwidth beyond the first bandwidth. A second set of channel quality metrics for the expanded bandwidth is received from one or more stations. An available portion of the expanded bandwidth is then determined based on the first and second sets of channel quality metrics. Communication with the one or more stations is initiated using the available portion of the expanded bandwidth.

公开(公告)号：US11470629B1

公开(公告)日：2022-10-11

申请号：US17125811

申请日：2020-12-17

Applicant: Cisco Technology, Inc.

Inventor： Malcolm M. Smith ,  Sanjay K. Katabathuni ,  Venkataprasad Chirreddy ,  Guru Prasanna Gopalakrishnan

IPC: H04W72/12 ,  H04W28/02

Abstract: A method includes receiving, at an access point, a buffer status report from a device wirelessly connected to the access point. The buffer status report indicates a queue depth of the device and a head of line delay for the device. The method further includes scheduling uplink resources at the access point for the device based on the queue depth and the head of line delay.

公开(公告)号：US11444860B2

公开(公告)日：2022-09-13

申请号：US17031312

申请日：2020-09-24

Applicant: Cisco Technology, Inc.

Inventor： Thomas Szigeti ,  Jerome Henry ,  Robert E. Barton ,  Malcolm M. Smith

IPC: H04L12/26 ,  H04W24/10 ,  H04W24/04 ,  H04W84/12 ,  H04L43/0864 ,  H04L43/0894 ,  H04L43/10

Abstract: Automating and extending path tracing through wireless links is provided by receiving a request to perform a network trace over a wireless link provided by an Access Point (AP) configured as a transparent forwarder between a trace source and a trace target; monitoring a trace packet from a first time of arrival at the AP, a first time of departure from the AP, a second time of arrival at the AP, and a second time of departure from the AP; monitoring a buffer status of the AP at the first time of arrival and the second time of arrival; and in response to identifying a network anomaly based on the trace packet and the buffer status, adjusting a network setting at the AP.

公开(公告)号：US11265842B2

公开(公告)日：2022-03-01

申请号：US16812427

申请日：2020-03-09

Applicant: Cisco Technology, Inc.

Inventor： Malcolm M. Smith ,  Xiaoqing Zhu ,  Jerome Henry

IPC: H04W64/00 ,  H04W24/10 ,  H04B7/06 ,  H04B7/08 ,  G01S5/02

Abstract: Techniques for determining a range between a wireless station (STA) and a wireless access point (AP) using channel state information are described. An AP determines channel state information corresponding to an STA. The AP determines, based on the channel state information, one or more fine timing measurement (FTM) parameters. A plurality of FTM messages are transmitted between the AP and the STA, based on the one or more FTM parameters. The STA is configured to determine an estimated range to the AP based on the plurality of FTM messages.

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.

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.

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.

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.

公开(公告)号：US11985542B2

公开(公告)日：2024-05-14

申请号：US17644457

申请日：2021-12-15

Applicant: Cisco Technology, Inc.

Inventor： Pooya Monajemi ,  Vishal S. Desai ,  Malcolm M. Smith ,  Santosh B. Kulkarni ,  Young Il Choi

IPC: H04W28/082 ,  H04W28/06 ,  H04W72/0453 ,  H04W72/542 ,  H04W76/15 ,  H04W88/06

CPC classification number: H04W28/06 ,  H04W28/082 ,  H04W72/0453 ,  H04W72/542 ,  H04W76/15 ,  H04W88/06

Abstract: Techniques are provided for optimizing performance of a multi-link device (MLD). In one embodiment, a controller receives information about a filter response for a first multi-link device (MLD, determines, based on the information about the filter response, a filtering transitional region of the first MLD indicating a range of frequencies where there is energy leakage due to the first MLD device operating in a simultaneous transmission and reception (STR) mode, determines cost metrics for a plurality of channels by identifying a STR and non-STR (NSTR) ratio for each of the plurality of channels, and assigns, based on the filtering transitional region and the cost metrics, a first radio of an access point (AP) to one of the plurality of channels to enable the first MLD to operate in the STR mode when communicating with the first radio.

公开(公告)号：US11895170B2

公开(公告)日：2024-02-06

申请号：US17249673

申请日：2021-03-09

Applicant: Cisco Technology, Inc.

Inventor： Sergio Mena ,  Lorenzo Granai ,  Malcolm M. Smith ,  Jerome Henry

IPC: H04L65/65 ,  H04L65/80 ,  G06T19/00 ,  H04L67/131 ,  H04L67/62 ,  H04L65/403 ,  H04L65/1033

CPC classification number: H04L65/65 ,  G06T19/003 ,  H04L65/1033 ,  H04L65/403 ,  H04L65/80 ,  H04L67/131 ,  H04L67/62

Abstract: Embodiments for virtual reality (VR) and augmented reality (AR) scenes updates at VR/AR devices in a network are described. Network traffic for the scene updates is divided into traffic layers such as coarse grain (CG) layer traffic and a fine grain (FG) layer traffic for a give VR/AR scene update. The CG layer traffic is scheduled first in resource units (RUs) of a plurality a transmission opportunity (TXOP) for a VR device and FG layer traffic is scheduled in remaining RUs during the TXOP to provide synchronous viewing experiences to users of the VR/AR devices.