公开(公告)号：US11616609B2

公开(公告)日：2023-03-28

申请号：US17302805

申请日：2021-05-12

Applicant: Cisco Technology, Inc.

Inventor： Sivadeep R. Kalavakuru ,  Ardalan Alizadeh

IPC: H04L5/00 ,  H04L1/00 ,  H04B1/04

Abstract: Embodiments herein describe assigning different linearity operating points of a front end of a radio to groups of user devices when transmitting data using OFDMA. That is, when transmitting a PPDU to a first group of user devices, an access point (AP) may set the front end of the radio to a lower linearity operating point than when transmitting a PPDU to a second group of user devices. Using a higher linearity operating point can increase the data rate used to transmit the PPDU—e.g., the AP can use a higher modulation coding scheme (MCS). This can reduce the time the PPDUs have to wait in a queue before being transmitted.

公开(公告)号：US11516808B2

公开(公告)日：2022-11-29

申请号：US17154131

申请日：2021-01-21

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Ardalan Alizadeh ,  Pooya Monajemi ,  Jerome Henry

IPC: H04W72/04 ,  H04W84/12

Abstract: In one embodiment, a method comprises first causing, by a controller device, wireless access points (APs) to allocate first non-interfering wireless channels for a prescribed reliable data service for wireless client devices in a WLAN; second causing the wireless APs to allocate a second shared channel having a bandwidth that is at least twice the corresponding bandwidth of any of the first non-interfering wireless channels; allocating for each wireless client device a corresponding location service interval on the second shared channel for transmission of at least a corresponding identifiable wireless data unit for locating the corresponding wireless client device between two or more of the wireless APs; and determining a location of at least one of the wireless client devices based on reception of at least the corresponding wireless data unit between the one wireless client device and the two or more wireless APs during the corresponding location service interval.

公开(公告)号：US11489699B2

公开(公告)日：2022-11-01

申请号：US17155709

申请日：2021-01-22

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Ardalan Alizadeh ,  Jerome Henry ,  John Matthew Swartz ,  Pooya Monajemi

IPC: H04L25/02 ,  H04W64/00 ,  H04B17/318 ,  H04W80/02 ,  H04W88/12

Abstract: According to one or more embodiments of the disclosure, a device receives data regarding wireless communications between a wireless access point and a client. The device evaluates, based on the data, motion of the client relative to the wireless access point. The device makes, based on the motion of the client relative to the wireless access point, a determination that the motion of the client relative to the wireless access point will result in the wireless communications degrading as the client approaches the wireless access point. The device adjusts the wireless communications, based on the determination that the motion of the client relative to the wireless access point will result in the wireless communications degrading as the client approaches the wireless access point.

公开(公告)号：US20220239531A1

公开(公告)日：2022-07-28

申请号：US17155709

申请日：2021-01-22

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Ardalan Alizadeh ,  Jerome Henry ,  John Matthew Swartz ,  Pooya Monajemi

IPC: H04L25/02 ,  H04W64/00 ,  H04W88/12 ,  H04W80/02 ,  H04B17/318

Abstract: According to one or more embodiments of the disclosure, a device receives data regarding wireless communications between a wireless access point and a client. The device evaluates, based on the data, motion of the client relative to the wireless access point. The device makes, based on the motion of the client relative to the wireless access point, a determination that the motion of the client relative to the wireless access point will result in the wireless communications degrading as the client approaches the wireless access point. The device adjusts the wireless communications, based on the determination that the motion of the client relative to the wireless access point will result in the wireless communications degrading as the client approaches the wireless access point.

公开(公告)号：US20220225317A1

公开(公告)日：2022-07-14

申请号：US17145249

申请日：2021-01-08

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Ardalan Alizadeh ,  Michael Barry DeLong ,  Guru Prasanna Gopalakrishnan

IPC: H04W72/04 ,  G01S3/26

Abstract: A method may be provided. One or more packets from a client may be received, in a block based modulation environment, at one or more switchable antennas of an access point. The access point may have a plurality of switchable antennas. Each switchable antenna may have an antenna state. The plurality of switchable antennas may be switched among such that at least five of the antenna states are sampled. Angle of arrival of the client may be calculated based on the at least five of the antenna states.

公开(公告)号：US20220225115A1

公开(公告)日：2022-07-14

申请号：US17145242

申请日：2021-01-08

Applicant: Cisco Technology, Inc.

Inventor： Sivadeep Reddy Kalavakuru ,  Ardalan Alizadeh ,  John Martin Blosco ,  Matthew Aaron Silverman ,  Gautam D. Bhanage ,  John Matthew Swartz

IPC: H04W16/28 ,  H04B17/391 ,  H04W24/02 ,  H04W64/00

Abstract: Optimal determination of wireless antenna configurations may be provided. A computing device may direct an antenna array of an Access Point (AP) to generate a wide beamwidth, to locate a cluster of two or more stations. Upon locating the cluster, the AP can narrow the beamwidth, and, with the narrower beamwidth, receive a key performance indicator (KPI) from at least one of the two or more stations in the cluster. The computing device may then generate a statistical model, based on the KPI and an antenna vector of the antenna array. Based on the statistical model, the computing device can determine a second antenna vector to optimize the KPI for one or more of the client stations. The computing device can then modify the antenna state of the AP to generate the determined antenna vector.

公开(公告)号：US10925001B2

公开(公告)日：2021-02-16

申请号：US16407447

申请日：2019-05-09

Applicant: Cisco Technology, Inc.

Inventor： Gautam Dilip Bhanage ,  Pooya Monajemi ,  Khashayar Mirfakhraei ,  Ardalan Alizadeh ,  Xu Zhang

IPC: G08C17/00 ,  H04W52/02 ,  G06N20/00 ,  G06N3/02 ,  H04W72/12

Abstract: In one embodiment, a device in a wireless network receives a target wake time (TWT) request from a wireless client. The device computes TWT parameters based on the received request. The device predicts, using the computed TWT parameters as input to a machine learning model, whether the computed TWT parameters will be accepted by the wireless client. The device provides the computed TWT parameters to the wireless client, based on a prediction by the machine learning model that the client will accept the computed TWT parameters.

公开(公告)号：US20200320397A1

公开(公告)日：2020-10-08

申请号：US16375315

申请日：2019-04-04

Applicant: Cisco Technology, Inc.

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

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

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：US20200296611A1

公开(公告)日：2020-09-17

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 ,  H04W72/12 ,  H04W72/04 ,  H04W24/08

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：US20250102683A1

公开(公告)日：2025-03-27

申请号：US18475839

申请日：2023-09-27

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Peiman Amini ,  Ardalan Alizadeh

IPC: G01S19/39 ,  G01S19/21

Abstract: Devices, systems, methods, and processes for calibrating clock signals of network devices are described herein. A device can initiate a ranging procedure with a reference device for synchronizing a clock signal of the device. The ranging procedure may utilize Fine Time Measurement (FTM), Ultra-Wide band (UWB), or similar protocols. The device can also synchronize the clock signal based on detection of ambient interference events. The device may also receive Global Navigation Satellite System (GNSS) data from a satellite and determine a pseudo range for the corresponding satellite based on the synchronized clock signal. The device may further transmit the GNSS data to a location engine. The location engine may aggregate the GNSS data received from a plurality of devices and determine a geolocation of the plurality of devices based on the aggregated GNSS data.