公开(公告)号：US20250081236A1

公开(公告)日：2025-03-06

申请号：US18458735

申请日：2023-08-30

Applicant: Cisco Technology, Inc.

Inventor： Matthew A. Silverman ,  Sivadeep Reddy Kalavakuru ,  Ardalan Alizadeh

IPC: H04W74/08

Abstract: Backscatter Device (BKD) scheduling and, specifically, narrowband BKD excitation for multiple BKD scheduling may be provided. An AP may determine to transmit an excitation transmission to a plurality of BKDs. The AP may determine a trigger frequency for each of the plurality of BKDs, and the AP may transmit an excitation transmission comprising a plurality of excitation signals. Each excitation signal may have a frequency corresponding to one of the trigger frequencies for the plurality of BKDs. The plurality of excitation signals may be ordered for the plurality of BKDs to perform backscattering (i) concurrently; (ii) staggered in a single Transmit Opportunity; or (iii) a combination of (i) and (ii).

公开(公告)号：US20240380459A1

公开(公告)日：2024-11-14

申请号：US18459564

申请日：2023-09-01

Applicant: Cisco Technology, Inc.

Inventor： Ardalan Alizadeh ,  Navid Reyhanian ,  Sivadeep R. Kalavakuru ,  Matthew A. Silverman ,  Peiman Amini

IPC: H04B7/06 ,  H04B7/0456

Abstract: Enhancing Multi-Access Point (AP) Coordination (MAPC) null-steering may be provided. Enhancing null-steering may include sending a coordination request for MAPC. A coordination response may be received from one or more APs. A Channel State Information (CSI) request may then be sent. CSI of one or more clients associated with the one or more APs may be received. Next, one or more precoder and decoder matrices may be determined based on the CSI of the one or more clients. The one or more precoder matrices may be sent to the one or more APs, and the one or more decoder matrices may be sent to the one or more clients. A transmission may be sent to a first client using null-steering and interference alignment based on the one or more precoder matrices, wherein the transmitting is synchronized with transmissions by the one or more APs to the one or more clients.

公开(公告)号：US20240172163A1

公开(公告)日：2024-05-23

申请号：US17989313

申请日：2022-11-17

Applicant: Cisco Technology, Inc.

Inventor： Ardalan Alizadeh ,  Sivadeep R. Kalavakuru ,  Matthew Aaron Silverman ,  John Matthew Swartz

IPC: H04W64/00 ,  H04L1/16

CPC classification number: H04W64/00 ,  H04L1/1607

Abstract: In some aspects, the techniques described herein relate to a method including: determining a series of predetermined phases for wireless signals to be used in location calculations for a station device accessing a wireless access point; reflecting wireless signals from the wireless access point off of an intelligent reflecting surface to the station device; and controlling the intelligent reflecting surface such that a series of the wireless signals are reflected off of the intelligent reflecting surface with the predetermined phases.

公开(公告)号：US20240129862A1

公开(公告)日：2024-04-18

申请号：US18046525

申请日：2022-10-14

Applicant: Cisco Technology, Inc.

Inventor： Sivadeep Reddy Kalavakuru ,  Ardalan Alizadeh ,  John Martin Blosco ,  Aaron Patrick Tondra

IPC: H04W52/34 ,  H04W52/36

CPC classification number: H04W52/346 ,  H04W52/367 ,  H04W84/12

Abstract: Automatically changing Access Point (AP) system configurations for Power over Ethernet (PoE) adaptation and Radio Frequency (RF) power improvement on band edge channels, particularly for Wireless Local Area Networks (WLAN) may be provided. A PoE budget for an AP may be determined. Then, an evaluation of inputs associated with the AP may be performed. The evaluation may include determining an entity input from an entity associated with the AP, determining a client input from a client interfacing with the AP, and/or determining a device input from the AP. Next, a configuration of the AP may be determined based on the PoE budget and the entity input, the client input, and/or the device input. The operation of the AP may be altered based on the configuration.

公开(公告)号：US11832197B2

公开(公告)日：2023-11-28

申请号：US17305032

申请日：2021-06-29

Applicant: Cisco Technology, Inc.

Inventor： Gautam D. Bhanage ,  Matthew A. Silverman ,  Sivadeep R. Kalavakuru ,  Ardalan Alizadeh

IPC: H04W56/00 ,  H04W8/00 ,  H04W72/12 ,  H04W16/14

CPC classification number: H04W56/001 ,  H04W8/005 ,  H04W16/14 ,  H04W56/0065 ,  H04W72/1215

Abstract: Techniques for neighborhood management between WiFi and unlicensed spectrum radios. A wireless access point (AP), including a first radio, identifies a neighboring second radio operating using at least a portion of an unlicensed radio spectrum, based on a time that the AP receives a transmission from the second radio using a frequency within the unlicensed radio spectrum. Transmission between the first radio and the second radio is synchronized by identifying a clock offset between a first clock relating to the first radio and a second clock relating to the second radio.

公开(公告)号：US11818706B2

公开(公告)日：2023-11-14

申请号：US17241928

申请日：2021-04-27

Applicant: Cisco Technology, Inc.

Inventor： Gautam D. Bhanage ,  Vishal Satyendra Desai ,  Ramadhasan Thangachamy ,  Ardalan Alizadeh ,  Khashayar Mirfakhraei ,  Robert E. Barton ,  Jerome Henry

IPC: H04W72/1263 ,  H04B17/318 ,  H04W72/21 ,  H04W84/18 ,  H04W84/12

CPC classification number: H04W72/1263 ,  H04B17/318 ,  H04W72/21 ,  H04W84/12 ,  H04W84/18

Abstract: Improved mesh performance using Overlapping Basic Service Set (OBSS) coloring and transmission scheduling may be provided. A controller may determine that a plurality of Access Points (APs) in a mesh network each have a Received Signal Strength Indicator (RSSI) that is in a predetermined range. Next, the controller may assign, in response to determining that the plurality of APs each have the RSSI that is in the predetermined range, OBSS colors to links between the plurality of APs to limit packet collision in the mesh network between the plurality of APs. The controller may then create a transmission schedule for transmissions between the plurality of APs in the mesh network based on the assigned OBSS colors.

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：US11678205B2

公开(公告)日：2023-06-13

申请号：US17833811

申请日：2022-06-06

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 ,  H04W84/12

CPC classification number: H04W16/28 ,  H04B17/391 ,  H04W24/02 ,  H04W64/006 ,  H04W84/12

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：US11659559B2

公开(公告)日：2023-05-23

申请号：US17682049

申请日：2022-02-28

Applicant: Cisco Technology, Inc.

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

IPC: H04W72/21 ,  H04B7/06 ,  H04L43/0829 ,  H04B17/318

CPC classification number: H04W72/21 ,  H04B7/0617 ,  H04B7/0695 ,  H04B17/318 ,  H04L43/0841

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.

公开(公告)号：US11569884B2

公开(公告)日：2023-01-31

申请号：US17116975

申请日：2020-12-09

Applicant: Cisco Technology, Inc.

Inventor： Arunkumar Ravichandran ,  Pooya Monajemi ,  Ardalan Alizadeh

IPC: H04L12/26 ,  H04B7/06 ,  H04W76/15 ,  H04L5/00

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.