-
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.
-
公开(公告)号：US20190079159A1
公开(公告)日：2019-03-14
申请号：US15701601
申请日：2017-09-12
Applicant: Cisco Technology, Inc.
Inventor： Huy Phuong Tran , Santosh G. Pandey
Abstract: A method including obtaining location estimates of a wireless mobile device inside a structure based on wireless signals transmitted by the wireless mobile device and received at a plurality of wireless access points, wherein the inside of the structure is represented by a plurality of path segments; modeling a transition from a first estimated location of the wireless mobile device to a second estimated location of the wireless mobile device by minimizing a ratio of an angle to a length between the first estimated location and the second estimated location; selecting, based on the modeling a particular path segment of the plurality of path segments; and aligning the second estimated location of the mobile device to the particular path segment. An apparatus and a computer-readable storage media implementing the method are also disclosed.
-
公开(公告)号：US11143738B1
公开(公告)日：2021-10-12
申请号：US16989204
申请日：2020-08-10
Applicant: Cisco Technology, Inc.
Inventor： Sivadeep R. Kalavakuru , Matthew Aaron Silverman , Xiaohua Fang , Rahul Dasgupta , Huy Phuong Tran , Abhishek Bhattacharyya
IPC: G01S5/10 , H04W4/029 , H04B17/318
Abstract: An access point includes first and second radios that operate in accordance with first and second wireless protocols, respectively. The access point performs a method including receiving a first protocol packet of the first wireless protocol and a second protocol packet of the second wireless protocol transmitted by a wireless device over a communication channel, and measuring a first received power of the first protocol packet and a second received power of the second protocol packet at the access point. The method further includes determining whether reception times of the first protocol packet and the second protocol packet are within a coherence time for the communication channel and, when the reception times are within the coherence time, combining the first received power and the second received power into a multiprotocol received power. The method also includes determining a location of the wireless device based on the multiprotocol received power.
-
4.发明授权公开(公告)号：US11074710B2
公开(公告)日：2021-07-27
申请号：US16724751
申请日：2019-12-23
Applicant: Cisco Technology, Inc.
Inventor： Huy Phuong Tran , Xu Zhang , Santosh Ghanshyam Pandey , Hugo Latapie , Abhishek Mukherji , Enzo Fenoglio
Abstract: In one embodiment, a service obtains spatial information regarding a physical area. The service estimates locations of a device within the physical area over time, based on wireless signals sent by the device. The service generates a set of images based on the spatial information regarding the physical area and on the estimated locations of the device within the physical area over time. The service updates an estimated location of the device by inputting the generated set of images to a machine learning model trained to minimize a location estimation error.
-
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.
-
Patent Agency Ranking
公开(公告)号：US09648464B1
公开(公告)日：2017-05-09
申请号：US15151081
申请日：2016-05-10
Applicant: Cisco Technology, Inc.
Abstract: An efficient process is provided that exploits features in historical and current client location data to forecast client counts of different zones up to several hours ahead. These features may be obtained from correlations of client counts of multiple zones in a recent and long period of time. These features may also be combined using techniques that choose the best performing method for a particular dataset and a particular lookahead time. This process provides better forecast/prediction on the zone-based client count data, and is very useful in customer analytics which can now show the future predicted value. This can help the analytics customers to plan their operations based on the location analytics.
-
公开(公告)号：US11579236B2
公开(公告)日：2023-02-14
申请号：US16356662
申请日：2019-03-18
Applicant: Cisco Technology, Inc.
Inventor： Xu Zhang , Abhishek Mukherji , Huy Phuong Tran , Vinay S. Raghuram , Matthew Aaron Silverman
Abstract: Systems and methods provide for improving the accuracy of a location system. The location system can capture partial phase vector data from one or more access points (APs). The location system can capture associated data associated with the partial phase vector data across multiple dimensions, such as identity data of the APs and client devices generating the partial phase vector data and frequency band data, location data, a time and date, and other data associated with the partial phase vector data. The location system can determine correlation data across the multiple dimensions using the first partial phase vector data and the associated data. The location system can a cause of the partial phase vector data based on the correlation data. The location system can perform one or more remediation actions based on the cause of the partial phase vector data.
-
公开(公告)号：US10349216B1
公开(公告)日：2019-07-09
申请号：US16103781
申请日：2018-08-14
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Huy Phuong Tran , Abhishek Mukherji , Rong Peng , Oscar Berjarano Chavez , Santosh Ghanshyam Pandey
Abstract: An enterprise system configures access point devices at an enterprise location to communicate with a location determination system. The location determination system receives wireless signal attributes of user computing devices broadcasting Wi-Fi signal data at the enterprise location from one or more access point devices. For a particular time window, the location determination system determines aggregated features of received wireless signal data across all access point devices, and classifies each of the user computing devices as moving or stationary by applying the wireless signal data to a model. For each of the user computing devices determined to be moving, the location determination system calculates a respective position of the user computing device based on the wireless signal data. For each of the user computing devices determined to be stationary, the location determination system does not calculate a respective position of the respective user computing device.
-
公开(公告)号：US10254380B2
公开(公告)日：2019-04-09
申请号：US15701601
申请日：2017-09-12
Applicant: Cisco Technology, Inc.
Inventor： Huy Phuong Tran , Santosh G. Pandey
Abstract: A method including obtaining location estimates of a wireless mobile device inside a structure based on wireless signals transmitted by the wireless mobile device and received at a plurality of wireless access points, wherein the inside of the structure is represented by a plurality of path segments; modeling a transition from a first estimated location of the wireless mobile device to a second estimated location of the wireless mobile device by minimizing a ratio of an angle to a length between the first estimated location and the second estimated location; selecting, based on the modeling a particular path segment of the plurality of path segments; and aligning the second estimated location of the mobile device to the particular path segment. An apparatus and a computer-readable storage media implementing the method are also disclosed.
-
公开(公告)号：US20230370813A1
公开(公告)日：2023-11-16
申请号：US17742160
申请日：2022-05-11
Applicant: Cisco Technology, Inc.
Inventor： Huy Phuong Tran , Nicholas Paul Schnorr , David A. Maluf
Abstract: Object movement detection may be provided. Channel State Information (CSI) data may be obtained. The CSI data may be associated with a plurality of links between a plurality of Access Points (APs) that provide coverage to an area. Next, a plurality of features may be extracted from the CSI data. The plurality of features may then be converted to a plurality of scores. Then motion in sub-areas of the area may be classified based on a comparison of the plurality of scores to a threshold for the area. The threshold may be determined based upon data collected when no motion occurred in the area.
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.034 seconds)
