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公开(公告)号：US20230362875A1
公开(公告)日：2023-11-09
申请号：US17735694
申请日：2022-05-03
Applicant: Cisco Technology, Inc.
Inventor： David A. Maluf , Huy Phuong Tran , Avinash Kalyanaraman , Paul Anthony Polakos
CPC classification number: H04W64/003 , G01S13/76
Abstract: Correcting for antennae spatial distortions in Radio Frequency (RF) localization may be provided. A plurality of actual locations associated with a plurality of Access Point (APs) may be received. Then a plurality of signal strengths associated with the plurality of APs may be received. Based on the plurality of signal strengths, a model may be created that models a plurality of inference errors respectively corresponding to the plurality of APs between a plurality of inferred locations respectively corresponding to the plurality of APs and the plurality of actual locations. The model may then be used in determining a location of a device.
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Patent Agency Ranking
公开(公告)号：US20230254687A1
公开(公告)日：2023-08-10
申请号：US18301937
申请日：2023-04-17
Applicant: Cisco Technology, Inc.
Inventor： John Martin Graybeal , Jerome Henry , Paul Anthony Polakos , Louis Gwyn Samuel , John George Apostolopoulos
Abstract: Correlating devices and clients across addresses may be provided. A first address associated with a client device may be received. When the client device is not connected to a network, first location data associated with the first address may be obtained using a passive technique. A second address and second location data associated with the second address may then be obtained using an active technique. It may then be determined that the first location data and the second location data correlate. In response to determining that the first location data and the second location data correlate, it may be determined that the client device has changed from the first address to the second address.
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公开(公告)号：US11936453B2
公开(公告)日：2024-03-19
申请号：US17165368
申请日：2021-02-02
Applicant: Cisco Technology, Inc.
Inventor： John Martin Graybeal , Paul Anthony Polakos , Robert Edward Liston , Wai-Tian Tan , Xiaoqing Zhu
IPC: H04B7/06 , H04B7/0452 , H04B7/0456 , H04L25/02
CPC classification number: H04B7/0626 , H04B7/0452 , H04B7/0456 , H04L25/0226
Abstract: Multi-User Multiple Input, Multiple Output (MU-MIMO) data transmissions are provided with a forward-predictive precoding matrix to mitigate the effects of a change in a state of a communication channel. First and second soundings are performed, at first and second times, to a receive antenna over a channel and, responsive to each of the soundings, first and second Channel State Information (CSI) are received. Based on the first and second CSI, a change in a state of the channel over a time period between the first and second time is determined. Based on the change in the state of the channel, a forward-predictive channel state matrix and/or a forward-predictive precoding matrix are determined that reflect a state of the channel at a future time and that are consistent with the determined change in the state over the time period. The forward-predictive precoding matrix is applied to a data transmission.
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公开(公告)号：US12232074B2
公开(公告)日：2025-02-18
申请号：US17735694
申请日：2022-05-03
Applicant: Cisco Technology, Inc.
Inventor： David A. Maluf , Huy Phuong Tran , Avinash Kalyanaraman , Paul Anthony Polakos
Abstract: Correcting for antennae spatial distortions in Radio Frequency (RF) localization may be provided. A plurality of actual locations associated with a plurality of Access Point (APs) may be received. Then a plurality of signal strengths associated with the plurality of APs may be received. Based on the plurality of signal strengths, a model may be created that models a plurality of inference errors respectively corresponding to the plurality of APs between a plurality of inferred locations respectively corresponding to the plurality of APs and the plurality of actual locations. The model may then be used in determining a location of a device.
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公开(公告)号：US11632671B2
公开(公告)日：2023-04-18
申请号：US17215138
申请日：2021-03-29
Applicant: Cisco Technology, Inc.
Inventor： John Martin Graybeal , Jerome Henry , Paul Anthony Polakos , Louis Gwyn Samuel , John George Apostolopoulos
Abstract: Correlating devices and clients across addresses may be provided. A first address associated with a client device may be received. When the client device is not connected to a network, first location data associated with the first address may be obtained using a passive technique. A second address and second location data associated with the second address may then be obtained using an active technique. It may then be determined that the first location data and the second location data correlate. In response to determining that the first location data and the second location data correlate, it may be determined that the client device has changed from the first address to the second address.
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公开(公告)号：US20220312192A1
公开(公告)日：2022-09-29
申请号：US17215138
申请日：2021-03-29
Applicant: Cisco Technology, Inc.
Inventor： John Martin Graybeal , Jerome Henry , Paul Anthony Polakos , Louis Gwyn Samuel , John George Apostolopoulos
Abstract: Correlating devices and clients across addresses may be provided. A first address associated with a client device may be received. When the client device is not connected to a network, first location data associated with the first address may be obtained using a passive technique. A second address and second location data associated with the second address may then be obtained using an active technique. It may then be determined that the first location data and the second location data correlate. In response to determining that the first location data and the second location data correlate, it may be determined that the client device has changed from the first address to the second address.
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