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公开(公告)号：US11238148B2
公开(公告)日：2022-02-01
申请号：US16273947
申请日：2019-02-12
Applicant: Cisco Technology, Inc.
Inventor： Abhishek Bhattacharyya , Abhishek Mukherji , Vinay S. Raghuram , Santosh Ramrao Patil
Abstract: Location-based, context-aware challenge-response authentication may be provided. First, a challenge may be provided to a user. The challenge may be based on a context corresponding to the user. The context corresponding to the user may comprise a location of a device associated with the user within an environment. Next, in response to providing the challenge, a response to the challenge may be received from the user. Then, in response to receiving the response to the challenge, it may be determined that the response is a correct answer to the challenge. In response to determining the response is the correct answer, a privilege may be provided to the user.
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2.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.
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公开(公告)号：US10721708B1
公开(公告)日：2020-07-21
申请号：US16196701
申请日：2018-11-20
Applicant: Cisco Technology, Inc.
Inventor： Abhishek Mukherji , Santosh G. Pandey , Rong Peng , Vinay Raghuram , Liu Huang
Abstract: Techniques for generating a prediction for a location of a mobile device includes a network controller obtaining signal strength information and angle-of-arrival information for mobile devices from a plurality of access points disposed at a location that includes two or more zones. The network controller extracts features from the obtained information. The features indicate whether the mobile devices are more likely in a first zone than in one or more of second zones of the two or more zones. The network controller generates a software model for classifying a mobile device into one of the two or more zones by applying a computer learning process to the extracted features. The network controller uses the software model to generate a prediction indicating that a first mobile device is in one of the two or more zones, and performs an action at the location based on the prediction.
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公开(公告)号：US10542517B1
公开(公告)日：2020-01-21
申请号：US16539359
申请日：2019-08-13
Applicant: Cisco Technology, Inc.
Inventor： Abhishek Mukherji , Santosh Ghanshyam Pandey , Abhishek Bhattacharyya , Vinay Raghuram , Balaji Gurumurthy , Prasad Walawalkar
Abstract: In one embodiment, a device receives location estimates for a wireless node in a network, each location estimate having an associated timestamp. The device applies hierarchical clustering to the received location estimates and their associated timestamps, to identify locations and points in time in which the wireless node was stationary. The device performs sequence modeling on the identified locations and points in time in which the wireless node was stationary, to form a sequence of locations and associated time periods in which the wireless node was stationary. The device associates the wireless node with a behavioral profile based on the sequence of locations and associated time periods in which the wireless node. The device generates, based in part on the behavioral profile for the wireless node, a predictive model that predicts a location of the wireless node at a particular point in time.
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公开(公告)号：US10785744B1
公开(公告)日：2020-09-22
申请号：US16380705
申请日：2019-04-10
Applicant: Cisco Technology, Inc.
Inventor： Xu Zhang , Paul J. Stager , Santosh Ghanshyam Pandey , Matthew Aaron Silverman , Abhishek Mukherji
IPC: H04W74/00 , H04W64/00 , H04W8/02 , H04W4/33 , H04B17/382 , H04W4/02 , H04B17/327
Abstract: Offloading of location computation from a location server to an access point through the use of projections on base phase vectors may be provided. First, an Access Point (AP) may receive a set of two or more base phase vectors from a location server. Next, the AP may measure a measured phase vector for a first signal from a user device. Then, the AP can determine projection values based on a comparison of the measured phase vector to each base phase vector. From these comparisons, the AP can determine a subset of base phase vectors with the highest projection values. The AP can then send the projection values and the subset of base phase vectors to the location server, wherein the location server determines the device location from these projection values and subset of base phase vectors.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20200015189A1
公开(公告)日：2020-01-09
申请号：US16029000
申请日：2018-07-06
Applicant: Cisco Technology, Inc.
Inventor： Abhishek Mukherji , Santosh Ghanshyam Pandey , Rong Peng , Vinay S. Raghuram
Abstract: In one embodiment, a device determines that location accuracy performance of an indoor positioning system deployment is below a predefined threshold. The device obtains characteristic data for the indoor positioning system deployment. The device identifies, by using the characteristic data as input to a machine learning model, one or more contributing factors from the characteristic data for the location accuracy performance of the indoor positioning system deployment being below the predefined threshold. The device initiates a remediation action based on the identified one or more contributing factors for the location accuracy performance of the indoor positioning system deployment being below the predefined threshold.
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公开(公告)号：US10425912B1
公开(公告)日：2019-09-24
申请号：US16250043
申请日：2019-01-17
Applicant: Cisco Technology, Inc.
Inventor： Abhishek Mukherji , Santosh Ghanshyam Pandey , Abhishek Bhattacharyya , Vinay Raghuram , Balaji Gurumurthy , Prasad Walawalkar
Abstract: In one embodiment, a device receives location estimates for a wireless node in a network, each location estimate having an associated timestamp. The device applies hierarchical clustering to the received location estimates and their associated timestamps, to identify locations and points in time in which the wireless node was stationary. The device performs sequence modeling on the identified locations and points in time in which the wireless node was stationary, to form a sequence of locations and associated time periods in which the wireless node was stationary. The device associates the wireless node with a behavioral profile based on the sequence of locations and associated time periods in which the wireless node. The device generates, based in part on the behavioral profile for the wireless node, a predictive model that predicts a location of the wireless node at a particular point in time.
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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.
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公开(公告)号：US20210112624A1
公开(公告)日：2021-04-15
申请号：US16599309
申请日：2019-10-11
Applicant: Cisco Technology, Inc.
Inventor： Abhishek Bhattacharyya , Abhishek Mukherji , Balaji Gurumurthy , Jenny Marie Yoshihara , Chayan Bhaisare , Prasad Walawalkar
Abstract: In one embodiment, a traffic analysis service receives payload data from packets sent by a sensor tag in a network. The service forms a payload signature for the sensor tag, based on the payload data. The payload signature is indicative of one or more bytes in the payload that vary across the packets. The service identifies a portion of the payload data as potentially including a sensor measurement, based on the payload signature. The service uses a machine learning classifier to assign a sensor measurement type to the identified portion of the payload data.
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10.发明申请公开(公告)号：US20200329452A1
公开(公告)日：2020-10-15
申请号：US16380705
申请日：2019-04-10
Applicant: Cisco Technology, Inc.
Inventor： Xu Zhang , Paul J. Stager , Santosh Ghanshyam Pandey , Matthew Aaron Silverman , Abhishek Mukherji
IPC: H04W64/00 , H04W8/02 , H04B17/327 , H04B17/382 , H04W4/02 , H04W4/33
Abstract: Offloading of location computation from a location server to an access point through the use of projections on base phase vectors may be provided. First, an Access Point (AP) may receive a set of two or more base phase vectors from a location server. Next, the AP may measure a measured phase vector for a first signal from a user device. Then, the AP can determine projection values based on a comparison of the measured phase vector to each base phase vector. From these comparisons, the AP can determine a subset of base phase vectors with the highest projection values. The AP can then send the projection values and the subset of base phase vectors to the location server, wherein the location server determines the device location from these projection values and subset of base phase vectors.
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