公开(公告)号：WO2022213025A1

公开(公告)日：2022-10-06

申请号：PCT/US2022/071288

申请日：2022-03-23

Applicant: CISCO TECHNOLOGY, INC.

Inventor： ALIZADEH, Ardalan ,  BHANAGE, Gautam D. ,  MIRFAKHRAEI, Khashayar ,  SILVERMAN, Matthew A. ,  KALAVAKURU, Sivadeep R.

IPC: H04W52/14 ,  H04W52/28 ,  H04W52/36 ,  H04W84/12 ,  H04W52/146 ,  H04W52/283 ,  H04W52/367 ,  H04W72/0453 ,  H04W72/0473

Abstract: A method includes instructing, by a WiFi access node, a first device to communicate using an uplink frequency band with a first uplink power. The method also includes instructing, by the WiFi access node, a second device to communicate using the uplink frequency band with a second uplink power different from the first uplink power.

公开(公告)号：WO2022150271A1

公开(公告)日：2022-07-14

申请号：PCT/US2022/011054

申请日：2022-01-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： BHANAGE, Guatam, D. ,  DESAI, Vishal, Satyendra ,  ALIZADEH, Ardalan ,  MIRFAKHRAEL, Khashayar

IPC: H04L45/00 ,  H04W40/16

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.

公开(公告)号：WO2020263841A1

公开(公告)日：2020-12-30

申请号：PCT/US2020/039156

申请日：2020-06-23

Applicant: CISCO TECHNOLOGY, INC.

Inventor： MIRFAKHRAEI, Khashayar ,  ALIZADEH, Ardalan ,  ZHANG, Xu ,  BHANAGE, Gautam D. ,  LYONS, Daniel J. ,  HART, Brian D.

IPC: H04L25/03 ,  H04L1/00

Abstract: The present disclosure provides for distortion cancelled by receiving a collided signal, the collided signal comprising a first signal carrying a first packet and a second signal carrying a second packet (110); amplifying and digitizing the collided signal into a first digital signal at a first gain (120) and a second digital signal at a second gain that is greater than the first gain (150); determining a nonlinear interference component of the first packet on the second packet from the first digital signal (140); decoding the first packet from the first digital signal (130); re-encoding the first packet with a first estimated channel effect into an estimated signal; calculating a linear interference component of the first packet on the second packet from the estimated signal (140); removing the linear interference component and the nonlinear interference component from the second digital signal to produce a de-interfered signal (160); and decoding the second packet from the de-interfered signal (170).

公开(公告)号：WO2022213044A1

公开(公告)日：2022-10-06

申请号：PCT/US2022/071350

申请日：2022-03-25

Applicant: CISCO TECHNOLOGY, INC.

Inventor： KALAVAKURU, Sivadeep, R. ,  ALIZADEH, Ardalan ,  SILVERMAN, Matthew, A. ,  BHANAGE, Gautam, D.

IPC: G01S5/02 ,  G01S5/0252 ,  H04B17/102 ,  H04B17/318 ,  H04W88/085

Abstract: Techniques for identifying an orientation for an antenna in a wireless communication device. A plurality of estimates of antenna gain are determined for an antenna associated with a wireless access point (AR), the plurality of estimates of antenna gain relating to a plurality of wireless stations (STAs) associated with the AR. An orientation for the antenna is determined based on the plurality of estimates of antenna gain and a plurality of properties for the antenna.

公开(公告)号：WO2022150391A1

公开(公告)日：2022-07-14

申请号：PCT/US2022/011318

申请日：2022-01-05

Applicant: CISCO TECHNOLOGY, INC.

Inventor： SILVERMAN, Matthew, Aaron ,  ALIZADEH, Ardalan ,  DELONG, Michael, Barry ,  GOPALAKRISHNAN, Guru, Prasanna

IPC: H04B7/08 ,  G01S3/48

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：WO2022150499A1

公开(公告)日：2022-07-14

申请号：PCT/US2022/011472

申请日：2022-01-06

Applicant: CISCO TECHNOLOGY, INC.

Inventor： SILVERMAN, Matthew, Aaron ,  ALIZADEH, Ardalan ,  MIRFAKHRAEI, Khashayar ,  BHANAGE, Guatam, D.

IPC: H04B7/06 ,  H04L5/00 ,  H04L25/02

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.

公开(公告)号：WO2022150295A1

公开(公告)日：2022-07-14

申请号：PCT/US2022/011121

申请日：2022-01-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： ALIZADEH, Ardalan ,  KALAVAKURU, Sivadeep, Reddy ,  BHANAGE, Guatam, D. ,  SWARTZ, John, Matthew ,  SILVERMAN, Matthew, Aaron

IPC: H04B7/024

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 beam width. The first AP can then receive uplink transmissions from at least a client in the coverage area of the narrow beam width. After the uplink transmission, the first AP can then switch the antenna to a larger beam width for a next Multi -AP coordination operation.

公开(公告)号：WO2022125450A1

公开(公告)日：2022-06-16

申请号：PCT/US2021/062029

申请日：2021-12-06

Applicant: CISCO TECHNOLOGY, INC. [US]/[US]

Inventor： RAVICHANDRAN, Arunkumar ,  MONAJEMI, Pooya ,  ALIZADEH, Ardalan

IPC: H04L25/02

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.

公开(公告)号：WO2023010007A1

公开(公告)日：2023-02-02

申请号：PCT/US2022/074150

申请日：2022-07-26

Applicant: CISCO TECHNOLOGY, INC.

Inventor： HART, Brian, D. ,  ALIZADEH, Ardalan ,  LYONS, Daniel, J. ,  SILVERMAN, Matthew, A.

IPC: H04L27/26 ,  H04L27/00

Abstract: Aspects discussed herein include a method and associated network device and computer program product. The method includes receiving a network packet, and estimating, using a preamble of the network packet, a power distribution corresponding to a plurality of subcarriers of a channel. The method further includes estimating a carrier frequency offset using the power distribution, and estimating a clock offset using the carrier frequency offset.

公开(公告)号：WO2022150298A1

公开(公告)日：2022-07-14

申请号：PCT/US2022/011127

申请日：2022-01-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： KALAVAKURU, Sivadeep, Reddy ,  ALIZADEH, Ardalan ,  BLOSCO, John, Martin ,  SILVERMAN, Matthew, Aaron ,  BHANAGE, Guatam, D. ,  SWARTZ, John, Matthew

IPC: H04B7/06 ,  H04B7/08

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 beam width, to locate a cluster of two or more stations. Upon locating the cluster, the AP can narrow the beam width, 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.