公开(公告)号：US11818567B2

公开(公告)日：2023-11-14

申请号：US18156012

申请日：2023-01-18

Applicant: Cisco Technology, Inc.

Inventor： Khashayar Mirfakhraei ,  Xu Zhang ,  Ardalan Alizadeh ,  Amir Hosein Kamalizad

IPC: H04W24/10 ,  H04W72/10 ,  H04W24/08 ,  H04W72/04 ,  H04W72/1263 ,  H04W72/0446 ,  H04W72/0453

CPC classification number: H04W24/10 ,  H04W24/08 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1263

Abstract: In one embodiment, an apparatus comprises a compressive sensing schedule generator configured to generate a plurality of compressive sensing schedules, wherein each of the plurality of compressive sensing schedules is for each of a plurality of frequency bands of a network, wherein the network comprises a plurality of access points and a plurality of clients, and a sensing matrix combiner configured to combine the plurality of compressive sensing schedules into a resulting schedule that comprises a spatial distribution and a scheduled time slot for each of the plurality of access points.

公开(公告)号：US20220377699A1

公开(公告)日：2022-11-24

申请号：US17833824

申请日：2022-06-06

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Xu Zhang ,  Santosh Ghanshyam Pandey ,  Jerome Henry ,  Paul J. Stager

IPC: H04W64/00 ,  G01S13/76 ,  H04W16/28

Abstract: Access Point (AP) placement using Fine Time Measurement (FTM) may be provided. First, a plurality of Time-of-Flight (ToF) values between a first service end point and a second service end point may be determined. Each one of the plurality of ToF values may be derived from packets transmitted via different beamforming vector patterns at the first service end point and the second service end point. Then a minimum ToF value of the plurality of ToF values may be determined. Next, a distance between the first service end point and the second service end point may be determined based on the minimum ToF value.

公开(公告)号：US11412476B2

公开(公告)日：2022-08-09

申请号：US16938551

申请日：2020-07-24

Applicant: Cisco Technology, Inc.

Inventor： Xu Zhang ,  Paul J. Stager ,  Santosh Ghanshyam Pandey ,  Matthew Aaron Silverman ,  Abhishek Mukherji

IPC: 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.

公开(公告)号：US11150325B2

公开(公告)日：2021-10-19

申请号：US16380668

申请日：2019-04-10

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Santosh Ghanshyam Pandey ,  Paul J. Stager ,  Xu Zhang ,  Abhishek Mukherji

IPC: G01S5/04 ,  G01S5/02 ,  H04L29/08 ,  H04W88/08

Abstract: Determining a device's location in a space in real time is computing intensive. To offload some of the workload in conducting this hyperlocation, the access points in the network conduct some of process in determining the location of a device. The cloud determines a restricted AoA search area based on previous client locations. After this determination, a three-dimensional (3D) AoA search is conducted by each AP in the restricted area (restricted by a range of azimuth directions) for a device. Finally, each AP reports a location(s) for the device, which comprises weights for selected angular sectors. The cloud can then construct a probability heat map for location computation from the weights provided from each AP for the device.

公开(公告)号：US11057831B2

公开(公告)日：2021-07-06

申请号：US16408546

申请日：2019-05-10

Applicant: Cisco Technology, inc.

Inventor： Khashayar Mirfakhraei ,  Amir Hosein Kamalizad ,  Xu Zhang ,  Ardalan Alizadeh ,  Vishal Satyendra Desai

IPC: H04W52/02 ,  H04W4/38 ,  H04L29/08

Abstract: In one embodiment, a supervisory service for a wireless network computes a compressive sensing schedule for a plurality of sensors in the wireless network. The service sends target wake time (TWT) messages to a subset of the plurality of sensors according to the computed compressive sensing schedule. The service receives, in response to the TWT messages, sensor readings from the subset of the plurality of sensors. The service performs compressive sensing on the received sensor readings.

公开(公告)号：US20220014958A1

公开(公告)日：2022-01-13

申请号：US17484162

申请日：2021-09-24

Applicant: Cisco Technology, Inc.

Inventor： Khashayar Mirfakhraei ,  Xu Zhang ,  Ardalan Alizadeh ,  Amir Hosein Kamalizad

IPC: H04W24/10 ,  H04W72/12 ,  H04W24/08 ,  H04W72/04

Abstract: In one embodiment, an apparatus comprises a compressive sensing schedule generator configured to generate a plurality of compressive sensing schedules, wherein each of the plurality of compressive sensing schedules is for each of a plurality of frequency bands of a network, wherein the network comprises a plurality of access points and a plurality of clients, and a sensing matrix combiner configured to combine the plurality of compressive sensing schedules into a resulting schedule that comprises a spatial distribution and a scheduled time slot for each of the plurality of access points.

公开(公告)号：US20210406696A1

公开(公告)日：2021-12-30

申请号：US17474191

申请日：2021-09-14

Applicant: Cisco Technology, Inc.

Inventor： Dantong LIU ,  Qing ZHAO ,  Khashayar MIRFAKHRAEI ,  Gautam Dilip BHANAGE ,  Xu Zhang ,  Ardalan Alizadeh

IPC: G06N3/08 ,  H04L29/08 ,  G06N3/04 ,  H04L12/24

Abstract: Learning-based service migration in mobile edge computing may be provided. First, a service migration policy may be created for a network that includes a plurality of edge clouds configured to provide a service to users. Next, a movement of a user receiving the service from a source edge cloud may be detected. The source edge cloud may be associated with a first area and the detected movement may be from the first area to a second area. Then, the service migration policy may be applied to determine whether to migrate the service for the user from the source edge cloud. In response to determining to migrate the service, a target edge cloud may be identified and the service for the user may be migrated from the source edge cloud to the target edge cloud. The service migration policy may then be updated based on a success of the migration.

公开(公告)号：US11159970B2

公开(公告)日：2021-10-26

申请号：US16299481

申请日：2019-03-12

Applicant: Cisco Technology, Inc.

Inventor： Khashayar Mirfakhraei ,  Xu Zhang ,  Ardalan Alizadeh ,  Amir Hosein Kamalizad

IPC: H04W24/10 ,  H04W72/10 ,  H04W24/08 ,  H04W72/04 ,  H04W72/12

Abstract: In one embodiment, an apparatus comprises a compressive sensing schedule generator configured to generate a plurality of compressive sensing schedules, wherein each of the plurality of compressive sensing schedules is for each of a plurality of frequency bands of a network, wherein the network comprises a plurality of access points and a plurality of clients, and a sensing matrix combiner configured to combine the plurality of compressive sensing schedules into a resulting schedule that comprises a spatial distribution and a scheduled time slot for each of the plurality of access points.

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：US20210120515A1

公开(公告)日：2021-04-22

申请号：US16655030

申请日：2019-10-16

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Xu Zhang ,  Santosh Ghanshyam Pandey ,  Jerome Henry ,  Paul J. Stager

IPC: H04W64/00 ,  H04W16/28 ,  G01S13/76

Abstract: Access Point (AP) placement using Fine Time Measurement (FTM) may be provided. First, a plurality of Time-of-Flight (ToF) values between a first service end point and a second service end point may be determined. Each one of the plurality of ToF values may be derived from packets transmitted via different beamforming vector patterns at the first service end point and the second service end point. Then a minimum ToF value of the plurality of ToF values may be determined. Next, a distance between the first service end point and the second service end point may be determined based on the minimum ToF value.