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公开(公告)号：US20230239012A1
公开(公告)日：2023-07-27
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.
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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.
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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
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.
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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
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.
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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
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.
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Patent Agency Ranking
16.发明申请Probe Response Suppression Using Angle-Of-Arrival In A High Density Environment 有权使用高密度环境中的到达角度进行探测响应抑制公开(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
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。
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公开(公告)号：US20240171988A1
公开(公告)日：2024-05-23
申请号：US17990783
申请日：2022-11-21
Applicant: Cisco Technology, Inc.
Inventor： John Matthew Swartz , Jerome Henry , Robert Edgar Barton , Matthew Aaron Silverman , Fred Jay Anderson , Vishal Satyendra Desai
Abstract: Presented herein are techniques to allocate use of controlled wireless spectrum. A method includes receiving, from a wireless local area network service provider, a request for wireless local area network spectrum for a future time window, wherein the wireless local area network spectrum is subject to automated frequency coordination, in response to the request, sending, to an incumbent that uses the wireless local area network spectrum, a query consistent with the request for the wireless local area network spectrum for the future time window, receiving, from the incumbent, in response to the query, a grant to use the wireless local area network spectrum for the future time window, and in response to receiving the grant, sending permission to the wireless local area network service provider to use the wireless local area network spectrum for the future time window.
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公开(公告)号：US20240155368A1
公开(公告)日：2024-05-09
申请号：US17982824
申请日：2022-11-08
Applicant: Cisco Technology, Inc.
Inventor： John Matthew Swartz , Jerome Henry , Robert Edgar Barton , Matthew Aaron Silverman , Fred Jay Anderson , Joshua D. Suhr
Abstract: Techniques herein facilitate dynamic configuration of a wireless local area network (WLAN) for large public venue (LPV) environments. In one example, a method may include providing an initial configuration for access points APs of a WLAN for an event at an LPV based on a profile for the event, a location of each AP for the venue, and anticipated demand at the APs; determining, for a particular time for the event, a distribution of wireless devices and channel support capabilities of the wireless devices different locations for the LPV; and providing an updated configuration for one or more APs at the one or more locations for the venue based on the distribution of the wireless devices and the channel support capabilities of the wireless devices determined for the particular time for the event at the LPV.
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公开(公告)号：US20240147383A1
公开(公告)日：2024-05-02
申请号：US17977329
申请日：2022-10-31
Applicant: Cisco Technology, Inc.
Inventor： Fred Jay Anderson , John Matthew Swartz , Jerome Henry , Robert Edgar Barton , Matthew Aaron Silverman , Danielle N. Bane
CPC classification number: H04W52/283 , H04W52/367
Abstract: A method for providing adaptive radio transmit power based on antenna pattern and elevation tilt measured through an accelerometer is provided. The method includes estimating an orientation of a wireless device using an orientation sensor integrated in or on the wireless device, and determining an adjustment factor for a transmitter of the wireless device based on the orientation. The method further includes adjusting output power of the transmitter of the wireless device based on the adjustment factor.
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公开(公告)号：US11575413B1
公开(公告)日：2023-02-07
申请号：US17582689
申请日：2022-01-24
Applicant: Cisco Technology, Inc.
Inventor： John Matthew Swartz , Nagendra Kumar Nainar , Matthew Aaron Silverman
IPC: H04B7/0452 , H04B7/0426 , H04B17/336 , H04B17/327
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.
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