公开(公告)号：US20210192768A1

公开(公告)日：2021-06-24

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

IPC: G06T7/70 ,  G06K9/46 ,  H04W4/33 ,  G01S5/02

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：US10932139B2

公开(公告)日：2021-02-23

申请号：US16178042

申请日：2018-11-01

Applicant: Cisco Technology, Inc.

Inventor： Huy Phuong Tran ,  Abhishek Mukherji ,  Edmund Cameron Duhaime ,  Rong Peng ,  Santosh Ghanshyam Pandey ,  Jacob Earl Fussell

IPC: H04W4/33 ,  H04W88/08 ,  H04W16/20

Abstract: A plurality of access points located within a building structure may provide various location-based services, such as navigation, to mobile devices within the building structure. To more accurately determine the location of the plurality of access points, a floorplan of the interior of the building structure may be obtained. A plurality of images of the interior of the building structure is then obtained. At least one of the images includes an image of at least one of the plurality of access points. A plurality of reference points may also be located within the building structure and obtained. Based on the plurality of images, reference points, and the floorplan, a composite image of the interior of the structure is generated. Based on the composite image, the location of each of the plurality of access points is determined.

公开(公告)号：US10932087B2

公开(公告)日：2021-02-23

申请号：US16702319

申请日：2019-12-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Huy Phuong Tran ,  Abhishek Mukherji ,  Rong Peng ,  Oscar Bejarano Chavez ,  Santosh Ghanshyam Pandey

IPC: H04W4/02 ,  G06N3/08 ,  H04W4/80 ,  H04W4/029 ,  H04W4/33 ,  H04W84/12 ,  H04W64/00 ,  G06N3/04 ,  G06N20/00

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：US20200158810A1

公开(公告)日：2020-05-21

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

IPC: G01S5/02 ,  H04W24/04 ,  H04W64/00 ,  G01S5/06

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.