公开(公告)号：US11153760B2

公开(公告)日：2021-10-19

申请号：US16293218

申请日：2019-03-05

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Daniel Joseph Lyons ,  Pooya Monajemi ,  John Matthew Swartz

IPC: H04W16/10 ,  H04W74/08 ,  H04L1/00 ,  H04W72/04 ,  H04B17/336 ,  H04W72/08 ,  H04W80/08 ,  H04W72/12 ,  H04W16/14 ,  H04B7/0452 ,  H04W84/12

Abstract: In one illustrative example, a device configured for use in a wireless local area network (WLAN) may cause a spatial reuse (SR) adjustment to be performed based on data received from a multi-user receiver procedure for the blind detection and demodulation of colliding packets from multiple stations. This procedure may be performed by one or more access points (APs) and/or distributed sensor nodes, each having such a multi-user receiver. The procedure may involve receiving and decoding, over a channel, a first spatial stream from a first device of a first base service set (BSS) color; simultaneously receiving and decoding, over the channel, a second spatial stream from a second device of a second BSS color (i.e. an overlapping BSS or “OBSS”); and calculating a signal-to-interference ratio (SIR) based on signal levels associated with the streams. The SR adjustment may involve adjusting an OBSS Packet Detect (PD) (OBSS-PD) threshold.

公开(公告)号：US11146982B2

公开(公告)日：2021-10-12

申请号：US16560604

申请日：2019-09-04

Applicant: Cisco Technology, Inc.

Inventor： Vishal Satyendra Desai ,  Jerome Henry ,  John Matthew Swartz ,  Joshua David Suhr ,  Indermeet Singh Gandhi

IPC: H04J1/16 ,  H04L1/00 ,  H04L12/16 ,  H04W28/02 ,  H04L12/26 ,  H04L12/24

Abstract: The present disclosure provides systems and methods for dynamically adjusting cell coverage sensitivity to address asymmetry of wireless cells that affect upstream and downstream traffic mismatch. In one aspect, a method includes estimating, at a network controller, one or more packet demodulation thresholds for an access point; sending, by the network controller, the one or more packet demodulation thresholds to the access point; receiving, from the access point, collected statistic, the collected statistics being link performance characteristics between the access point and one or more endpoints associated with the access point measured by one or more sensors associated with the access point; updating, at the network controller, the one or more packet demodulation thresholds based on the collected statistics to yield an updated packet demodulation threshold; and configuring, by the network controller, the access point with the updated demodulation threshold.

公开(公告)号：US20210068001A1

公开(公告)日：2021-03-04

申请号：US16560604

申请日：2019-09-04

Applicant: Cisco Technology, Inc.

Inventor： Vishal Satyendra Desai ,  Jerome Henry ,  John Matthew Swartz ,  Joshua David Suhr ,  Indermeet Singh Gandhi

IPC: H04W28/02 ,  H04L12/24 ,  H04L12/26

Abstract: The present disclosure provides systems and methods for dynamically adjusting cell coverage sensitivity to address asymmetry of wireless cells that affect upstream and downstream traffic mismatch. In one aspect, a method includes estimating, at a network controller, one or more packet demodulation thresholds for an access point; sending, by the network controller, the one or more packet demodulation thresholds to the access point; receiving, from the access point, collected statistic, the collected statistics being link performance characteristics between the access point and one or more endpoints associated with the access point measured by one or more sensors associated with the access point; updating, at the network controller, the one or more packet demodulation thresholds based on the collected statistics to yield an updated packet demodulation threshold; and configuring, by the network controller, the access point with the updated demodulation threshold.

公开(公告)号：US10524272B2

公开(公告)日：2019-12-31

申请号：US15865877

申请日：2018-01-09

Applicant: Cisco Technology, Inc.

Inventor： Matt Silverman ,  Zhigang Gao ,  Oscar Bejarano Chavez ,  John Matthew Swartz ,  Santosh Ghanshyam Pandey

IPC: H04W24/10 ,  H04W72/08 ,  H04W48/00 ,  H04B7/06

Abstract: In one embodiment, a control device associated with a wireless network of a given location determines a reference quality of location readings between access points and client devices based on using substantially all of an available wireless communication bandwidth. The control device may then determine channel state information (CSI) between the client devices and access points for each orthogonal frequency-division multiple access (OFDMA) resource unit (RU), and selects a subset of RUs for allocation to each respective client device, based on the subset of RUs allocated to each respective client device i) surpassing a determined threshold of certain parameters of the CSI, while also ii) providing a minimum quality of a location reading based on using only the subset of RUs as compared to the reference quality of location readings. The control device may then allocate the selected subset of RUs to each respective client device for location-preserving OFDMA-signaling-based communication.

公开(公告)号：US20150257117A1

公开(公告)日：2015-09-10

申请号：US14202654

申请日：2014-03-10

Applicant: Cisco Technology, Inc.

Inventor： Neil R. Diener ,  John Matthew Swartz ,  Paul J. Stager ,  Tak Ming Pang

IPC: H04W64/00 ,  H04W48/16

CPC classification number: H04W64/00 ,  H04W8/005 ,  H04W48/06 ,  H04W48/14

Abstract: A first wireless device (e.g., an access point) receives a message from a second wireless device (e.g., a client device). The first device determines an angle-of-arrival of the message at a plurality of antennas of the first wireless device. The first device compares the angle-of-arrival with an angle-of-arrival threshold to determine whether to transmit a response message to the second wireless device. In one example, the first wireless device is a wireless access point device operating in a wireless network, the second wireless device is a wireless client device operating in the wireless network, the message is a probe request message and the response message is a probe response message.

Abstract translation: 第一无线设备（例如，接入点）从第二无线设备（例如，客户端设备）接收消息。 第一设备确定消息在第一无线设备的多个天线处的到达角度。 第一设备将到达角与入场角阈值进行比较，以确定是否向第二无线设备发送响应消息。 在一个示例中，第一无线设备是在无线网络中操作的无线接入点设备，第二无线设备是在无线网络中操作的无线客户端设备，该消息是探测请求消息，并且响应消息是探测响应 信息。

公开(公告)号：US20240283506A1

公开(公告)日：2024-08-22

申请号：US18171774

申请日：2023-02-21

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Ardalan Alizadeh ,  John Matthew Swartz

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0617

Abstract: Connection issue prediction may be provided. A computing device may receive first Channel State Information (CSI) for a first link associated with a client device. The first CSI may be collected when beamforming was trained on a second link associated with the client device. Second CSI may be received for the first link associated with the client device. The second CSI may be collected at a time subsequent to when beamforming was trained on the second link associated with the client device. A correlation between the first CSI and the second CSI may be determined to be below a predetermined threshold. A status of the beamforming performed on the second link associated with the client device may be set to stale in response to determining that the correlation between the first CSI and the second CSI is below the predetermined threshold.

公开(公告)号：US20240142547A1

公开(公告)日：2024-05-02

申请号：US17977282

申请日：2022-10-31

Applicant: Cisco Technology, Inc.

Inventor： Fred Jay Anderson ,  John Matthew Swartz ,  Jerome Henry ,  Robert Edgar Barton ,  Matthew Silverman ,  Michael F. Marlborough

IPC: G01R33/00

CPC classification number: G01R33/0023 ,  G01R33/0047

Abstract: A method for calibrating a magnetometer of a device is provided. The method includes collecting, with a portable calibration device having a magnetometer, magnetic field measurements in a spatial region about a mounting location where the device is to be installed for operation, estimating magnetometer compensation parameters to correct for magnetic field distortion at the mounting location based on the magnetic field measurements collected by the portable calibration device, and configuring the device installed at the mounting location based on the magnetometer compensation parameters.

公开(公告)号：US11943016B2

公开(公告)日：2024-03-26

申请号：US17989262

申请日：2022-11-17

Applicant: Cisco Technology, Inc.

Inventor： John Matthew Swartz ,  Nagendra Kumar Nainar ,  Matthew Aaron Silverman

IPC: H04B7/0452 ,  H04B7/0426 ,  H04B17/327 ,  H04B17/336

CPC classification number: H04B7/0452 ,  H04B7/0426 ,  H04B17/327 ,  H04B17/336

Abstract: Presented herein are techniques to shield transmissions from being received and the information contained in them recovered by unwanted devices. Multi-user multiple-input multiple-output (MU-MIMO) techniques are employed, and in particular the spatial dimension aspects of those techniques. Shield nodes are controlled to transmit in a way to obscure the downlink streams transmitted by a wireless access point that are intended for a particular client device to anything outside of the shielded area, and also to obscure uplink streams from one or more client devices to the wireless access point to anything outside of the shielded area but allowing the uplink streams to be well received by the wireless access point.

公开(公告)号：US20230254379A1

公开(公告)日：2023-08-10

申请号：US17667890

申请日：2022-02-09

Applicant: Cisco Technology, Inc.

Inventor： Carlos M. Pignataro ,  Nagendra Kumar Nainar ,  David John Zacks ,  John Matthew Swartz ,  Akram Ismail Sheriff

IPC: H04L67/141

CPC classification number: H04L67/141

Abstract: Presented herein are techniques to facilitate infrastructure and policy orchestration in a shared workspace network environment. In one example, a method may include obtaining, by a service broker, a reservation request from a consumer network for a consumer, wherein the reservation request seeks a reservation to reserve, at least in part, at least one workspace device for the consumer for a workspace for a particular day and a particular time period; based on determining that the at least one workspace device is available, providing a response to the consumer network that includes a first indicator for identifying the reservation of the workspace and at least one second indicator identifying the at least one workspace device; and upon receiving a session request from the consumer network that includes the second indicator, establishing a management tunnel to interconnect the consumer network and the at least one workspace device via the service broker.

公开(公告)号：US11489699B2

公开(公告)日：2022-11-01

申请号：US17155709

申请日：2021-01-22

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Ardalan Alizadeh ,  Jerome Henry ,  John Matthew Swartz ,  Pooya Monajemi

IPC: H04L25/02 ,  H04W64/00 ,  H04B17/318 ,  H04W80/02 ,  H04W88/12

Abstract: According to one or more embodiments of the disclosure, a device receives data regarding wireless communications between a wireless access point and a client. The device evaluates, based on the data, motion of the client relative to the wireless access point. The device makes, based on the motion of the client relative to the wireless access point, a determination that the motion of the client relative to the wireless access point will result in the wireless communications degrading as the client approaches the wireless access point. The device adjusts the wireless communications, based on the determination that the motion of the client relative to the wireless access point will result in the wireless communications degrading as the client approaches the wireless access point.