Patents by Inventor Ardalan Alizadeh

Ardalan Alizadeh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220239531
    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.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 28, 2022
    Inventors: Matthew Aaron Silverman, Ardalan Alizadeh, Jerome Henry, John Matthew Swartz, Pooya Monajemi
  • Publication number: 20220232551
    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.
    Type: Application
    Filed: January 21, 2021
    Publication date: July 21, 2022
    Inventors: MATTHEW AARON SILVERMAN, ARDALAN ALIZADEH, POOYA MONAJEMI, JEROME HENRY
  • Publication number: 20220225217
    Abstract: Optimal determination of a Wireless Local Area Network (WLAN) sounding method and system may be provided. An Access Point (AP) selects a subchannel for the partial sounding. The AP then sounds the selected subchannel. A client station responds with Channel State Information (CSI). The AP can receive the CSI, from the client station, in response to the sounding. Based on the CSI from the selected subchannel, the AP extrapolates the CSI to determine predicted CSI for a wider bandwidth channel.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Matthew Aaron Silverman, Ardalan Alizadeh, Khashayar Mirfakhraei, Gautam D. Bhanage
  • Publication number: 20220225317
    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.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Matthew Aaron Silverman, Ardalan Alizadeh, Michael Barry DeLong, Guru Prasanna Gopalakrishnan
  • Publication number: 20220225115
    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.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Sivadeep Reddy Kalavakuru, Ardalan Alizadeh, John Martin Blosco, Matthew Aaron Silverman, Gautam D. Bhanage, John Matthew Swartz
  • Publication number: 20220225205
    Abstract: Optimal determination of wireless network pathway configurations may be provided. A computing device may detect, at a first network Access Point (AP), inference on a channel with a second AP. Then, the computing device can check availability of a redundant radio at the second AP. Based on the availability, the computing device can establish a new radio link with the redundant radio at the second AP and reroute data traffic over the new radio link to the second AP. After establishing the new radio link, the computing device can then sever the channel with the second AP.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Gautam D. Bhanage, Vishal Satyendra Desai, Ardalan Alizadeh, Khashayar Mirfakhraei
  • Publication number: 20220225325
    Abstract: Optimal determination of wireless network pathway configurations may be provided. A computing device may establish Multi-Access Point (AP) coordination between at least a first AP and a second AP. The first AP can determine an uplink operation is scheduled. When an uplink is scheduled, the first AP can switch its antenna to a narrow beamwidth. The first AP can then receive uplink transmissions from at least a client in the coverage area of the narrow beamwidth. After the uplink transmission, the first AP can then switch the antenna to a larger beamwidth for a next Multi-AP coordination operation.
    Type: Application
    Filed: February 28, 2022
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Ardalan Alizadeh, Sivadeep Reddy Kalavakuru, Gautam D. Bhanage, John Matthew Swartz, Matthew Aaron Silverman
  • Patent number: 11368857
    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.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: June 21, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Sivadeep Reddy Kalavakuru, Ardalan Alizadeh, John Martin Blosco, Matthew Aaron Silverman, Gautam D. Bhanage, John Matthew Swartz
  • Publication number: 20220182119
    Abstract: Out-of-link channel sounding using an out-of-band channel sounding link for multi-link devices (MLDs) in a wireless network may be provided. An Access Point (AP) may establish a first Wireless Communication Link (WCL) with a Multi-link Device (MLD). The AP may also establish a second WCL with the MLD. After establishing the first WCL, the AP may transmit a sounding trigger to the MLD on the first WCL. After transmission of the sounding trigger to the MLD on the first WCL, AP may transmit a Channel State Information (CSI) inquiry to the MLD on the second WCL. AP may receive a channel state quantification from the MLD on the second WCL in response to the CSI inquiry.
    Type: Application
    Filed: December 9, 2020
    Publication date: June 9, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Arunkumar Ravichandran, Pooya Monajemi, Ardalan Alizadeh
  • Patent number: 11275366
    Abstract: In one embodiment, a management entity monitors for a change in a convergence rate of spatio-temporal compressive sensing measurements from a plurality of sensors in a sensor network operating according to a measurement matrix up to a halting criterion, and if the change is below a given threshold, determines whether the change is due to impulse noise or due to continued sensed measurements. If continued sensed measurements, the management entity initiates a single-dimensional compressive sensing in a spatial domain at regular time intervals, and identifies and tracks gradient clusters. In response to a change in joint spatio-temporal sparsity of tracked nodes of the gradient clusters, the management entity can then determine an updated measurement matrix based on the joint spatio-temporal sparsity of tracked nodes while satisfying one or more operating parameters, and directs at least certain sensors of the plurality of sensors to operate according to the updated measurement matrix.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: March 15, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Khashayar Mirfakhraei, Amir Hosein Kamalizad, Ardalan Alizadeh, Xu Zhang
  • Patent number: 11265857
    Abstract: Optimal determination of wireless network pathway configurations may be provided. A computing device may establish Multi-Access Point (AP) coordination between at least a first AP and a second AP. The first AP can determine an uplink operation is scheduled. When an uplink is scheduled, the first AP can switch its antenna to a narrow beamwidth. The first AP can then receive uplink transmissions from at least a client in the coverage area of the narrow beamwidth. After the uplink transmission, the first AP can then switch the antenna to a larger beamwidth for a next Multi-AP coordination operation.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: March 1, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Ardalan Alizadeh, Sivadeep Reddy Kalavakuru, Gautam D. Bhanage, John Matthew Swartz, Matthew Aaron Silverman
  • Publication number: 20220038993
    Abstract: The present technology enables inter-network routing by dynamically optimizing data paths for traffic destined for wired clients attached to a wireless access point in a wireless mesh network with a plurality of wireless access points. The present technology can also influence steering of wireless device connections within the wireless mesh network when high amounts of data traffic are exchanged between nearby mesh wireless access points.
    Type: Application
    Filed: October 15, 2021
    Publication date: February 3, 2022
    Inventors: Vishal Satyendra Desai, Gautam Bhanage, Khashayar Mirfakhraei, Ardalan Alizadeh
  • Publication number: 20220014958
    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.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Inventors: Khashayar Mirfakhraei, Xu Zhang, Ardalan Alizadeh, Amir Hosein Kamalizad
  • Publication number: 20210406696
    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.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 30, 2021
    Applicant: Cisco Technology, Inc.
    Inventors: Dantong LIU, Qing ZHAO, Khashayar MIRFAKHRAEI, Gautam Dilip BHANAGE, Xu Zhang, Ardalan Alizadeh
  • Patent number: 11184265
    Abstract: Inter-protocol interference reduction for hidden nodes may be provided. A first service end point may determine that an inter-protocol interference is present on a channel. Next, an initial packet failure count value on the channel may be determined. A transmit (Tx) power for selected packets may then be increased until a subsequent packet failure count value on the channel is less than the initial packet failure count value.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: November 23, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Ardalan Alizadeh, Gautam Dilip Bhanage, Benjamin Jacob Cizdziel, Khashayar Mirfakhraei, Matthew Aaron Silverman
  • Publication number: 20210352483
    Abstract: Aspects described herein include a method for use with an access point (AP). The method comprises inspecting control frames received from a rogue AP, characterizing an intrusion by the rogue AP using one or more spatial reuse parameters included in the control frames, and selecting a defensive posture for the AP based on the characterization.
    Type: Application
    Filed: May 7, 2020
    Publication date: November 11, 2021
    Inventors: Gautam D. BHANAGE, Benjamin J. CIZDZIEL, Vishal S. DESAI, Ardalan ALIZADEH, Khashayar MIRFAKHRAEI
  • Patent number: 11166221
    Abstract: The present technology enables inter-network routing by dynamically optimizing data paths for traffic destined for wired clients attached to a wireless access point in a wireless mesh network with a plurality of wireless access points. The present technology can also influence steering of wireless device connections within the wireless mesh network when high amounts of data traffic are exchanged between nearby mesh wireless access points.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: November 2, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Vishal Satyendra Desai, Gautam Bhanage, Khashayar Mirfakhraei, Ardalan Alizadeh
  • Patent number: 11159970
    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.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: October 26, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Khashayar Mirfakhraei, Xu Zhang, Ardalan Alizadeh, Amir Hosein Kamalizad
  • Publication number: 20210314845
    Abstract: The present technology enables inter-network routing by dynamically optimizing data paths for traffic destined for wired clients attached to a wireless access point in a wireless mesh network with a plurality of wireless access points. The present technology can also influence steering of wireless device connections within the wireless mesh network when high amounts of data traffic are exchanged between nearby mesh wireless access points.
    Type: Application
    Filed: April 6, 2020
    Publication date: October 7, 2021
    Inventors: Vishal Satyendra Desai, Gautam Bhanage, Khashayar Mirfakhraei, Ardalan Alizadeh
  • Patent number: 11132608
    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.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: September 28, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Dantong Liu, Qing Zhao, Khashayar Mirfakhraei, Gautam Dilip Bhanage, Xu Zhang, Ardalan Alizadeh