Patents Assigned to Cisco Technology
  • NEED-BASED ANTENNA SWITCHING IN WI-FI ANGLE-OF-ARRIVAL LOCATIONING
    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
  • CHANNEL AVAILABILITY CHECK OPTIMIZATION
    Publication number: 20220225131
    Abstract: Channel availability check optimization may be provided. A plurality of Pulse Repetition Intervals (PRIs) may be determined for a respective plurality of bursts on a respective plurality of frequencies. A list of at least a portion of the plurality of frequencies may be generated. The list may include a plurality of bias factors respectively indicating a probability that each of the respective plurality of bursts was a radar burst based on the respective plurality of PRIs. An Access Point (AP) may perform a plurality of preemptive Channel Availability Checks (CACs) on each of the respective plurality of frequencies on the list in order of highest probability to lowest probability based on the plurality of bias factors.
    Type: Application
    Filed: January 14, 2021
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Vishal Satyendra DESAI, Edgard VANGEEL, Jerome HENRY, Robert E. Barton
  • LOW-OVERHEAD CHANNEL SOUNDING IN WI-FI7 BASED ON PARTIAL BAND CHANNEL ESTIMATION
    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
  • ANTENNA BEAM SWITCHING IN MULTI-ACCESS POINT COORDINATION
    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
  • MULTICAST CONTAINMENT IN A MULTIPLE PRE-SHARED KEY (PSK) WIRELESS LOCAL AREA NETWORK (WLAN)
    Publication number: 20220225097
    Abstract: A method for providing multicast frames in a Multi-Dwelling Unit (MDU) is provided herein. An Access Point (AP) can receive a join request from a first client device. The AP can generate a Group Master Key (GMK) from the Pre-Shared Key (PSK) associated with a Basic Service Set (BSS) that includes the first client device. The AP can then derive a Group Transient Key (GTK) from the GMK. The AP may then send the GTK to the first client device. Thereinafter, the AP can send multicast frames to the first client device encrypted by the GTK. The first client device can decrypt the multicast frames with the GTK. However, a second client device, that does not share the PSK, may receive the multicast frame but cannot decrypt the multicast frames.
    Type: Application
    Filed: January 12, 2021
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Ugo Mario Campiglio, Amine Choukir, Roberto Muccifora, Domenico Ficara, Sachin Dinkar Wakudkar
  • PRESERVING TRANSMISSION PROPERTIES OF REAL-TIME SCENES IN AN ENVIRONMENT WHEN AN INCREASING NUMBER OF USERS JOIN A SESSION
    Publication number: 20220224756
    Abstract: Preserving transmission properties of real-time scenes in an environment when an increasing number of users join a session may be provided. A plurality of metrics associated with transmission of scenes having a Coarse Grain (CG) layer and a Fine Grain (FG) layer may be determined. Then a current client, based on a first one of a plurality of metrics, may be revoked. One of the following may then be performed: blocking a new client based on a second one of a plurality of metrics; and allowing the new client based on the second one of a plurality of metrics.
    Type: Application
    Filed: January 11, 2021
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Malcolm Muir SMITH, Sergio MENA, Lorenzo GRANAI, Jerome HENRY
  • RELIABLE AND AVAILABLE WIRELESS FORWARDING INFORMATION BASE (FIB) OPTIMIZATION
    Publication number: 20220225171
    Abstract: Optimal determination of wireless network pathway configurations may be provided. A computing device may receive an error profile and a response instruction associated with the error profile, as generated by a network controller. The computing device may then monitor, for an error, on a communication Track, in a network, between an ingress node and an egress node. Then, the computing device, upon detecting the error, can determine that the error is similar to the error profile, and based on the determination that the error is similar to the error profile, enact the response instruction. The response instruction can direct the computing device to switch from the communication Track to a communication subTrack between the ingress node and the egress node.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Arman Rezaee
  • DYNAMIC RADIO CONFIGURATION FOR SEAMLESS BACKHAUL FREQUENCY OPTIMIZATION
    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
  • ADAPTIVE BEAMWIDTH SWITCHING AND BEAM STEERING IN LARGE PUBLIC VENUE (LPV) SMART ANTENNA SYSTEM
    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
  • SWITCH AND BACKHAUL CAPACITY-BASED RADIO RESOURCE MANAGEMENT
    Publication number: 20220225172
    Abstract: Systems and methods herein can analyze a bandwidth restriction in a communication stream of an Access Point (AP). Then, based on the bandwidth restriction, the AP can determine a lower amount of wireless bandwidth to provide to station wireless communicating to the AP. The AP can then modify a bandwidth allocation assigned to the station based on the lower amount of wireless bandwidth.
    Type: Application
    Filed: April 4, 2022
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Vishal Satyendra Desai, Benjamin Jacob Cizdziel, Pooya Monajemi, Young Il Choi, Santosh Babaji Kulkarni
  • SEAMLESS ROAMING FOR MULTI-LINK DEVICE CLIENTS
    Publication number: 20220225200
    Abstract: Seamless client roaming for Multi-Link Device (MLD) clients may be provided. First, a Traffic Identifier (TID)-to-link map may be established by an Upper Service Access Point (U-SAP) of a multi-AP MLD entity that assigns subsets of TIDs to at least two links of the entity. For example, a client device logically associates with the U-SAP, while the client device physically connects to a first and second AP of the entity on a respective first and second link, where the first and second AP include first and second Lower Service Access Points (L-SAPs) and are non-collocated. Next, using the map, data received at the U-SAP is directed over one of the two links for transmission to the client device. Further, frame aggregation and block acknowledgment functions may be performed by one of the first or second L-SAP based on whether data transmission is over the first or second link.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Malcolm Muir SMITH, Brian D. HART, Pooya MONAJEMI, Santosh Babaji KULKARNI, Vishal Satyendra DESAI
  • OPENROAMING BASED REMOTE WORKER
    Publication number: 20220224565
    Abstract: A method for establishing a VPN with a client device is provided. In the method, an AP can receive an access request directed to an OpenRoaming (OR) Service Set Identifier (SSID) from the client device. The AP can send the access request to an OR connector. In response to the access request, the AP may receive an access response from the OR connector. The access response can include an attribute indicating an address to connect to a company Virtual Private Network (VPN) headend. The AP may then use the attribute to establish the VPN connection with the company VPN headend.
    Type: Application
    Filed: January 13, 2021
    Publication date: July 14, 2022
    Applicant: Cisco Technology, Inc.
    Inventors: Vincent Cuissard, Domenico Ficara, Amine Choukir, Roberto Muccifora
  • Monitoring voice-over-IP performance over the internet
    Patent number: 11388292
    Abstract: Techniques for monitoring Voice-over-IP (VoIP) network services over the Internet are disclosed. In some embodiments, a system, process, and/or computer program product for monitoring and/or troubleshooting VoIP network services over the Internet includes performing VoIP call initiation testing using a source agent and a target agent; performing synthetic VoIP call quality testing using the source agent and the target agent over the Internet; and generating a report based on the VoIP call initiation testing and the synthetic VoIP call quality testing over the Internet.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: July 12, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Joao Antunes, Ricardo V. Oliveira
  • Load balancing based on security parameter index values
    Patent number: 11388225
    Abstract: Techniques for load balancing encrypted traffic based on security parameter index (SPI) values of packet headers and sets of 5-tuple values of the packet headers are described herein. Additionally, techniques for including quality of service (QoS)-type information in SPI value fields of packet headers are also described herein. The QoS-type information may indicate a particular traffic class according to which the packet is to be handled. Further, techniques for pre-configuring a backend host such that encrypted traffic may be migrated to the backend host from another backend host without causing temporary service disruptions are also described herein.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: July 12, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Grzegorz Boguslaw Duraj, Leonardo Rangel Augusto, Kyle Andrew Donald Mestery
  • Ethernet virtual private network attachment circuit aware virtual local area network bundle service
    Patent number: 11388084
    Abstract: Techniques for routing traffic across different virtual local area networks (VLANs) within a single bridge domain are described. One technique includes receiving at a first network device a packet from a second network device on a first interface of multiple interfaces within a bridge domain at the first network device. Attachment circuit information associated with the packet is determined. An information element that includes an indication of the attachment circuit information is generated. The information element is transmitted to the third network device.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: July 12, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Ali Sajassi, Mankamana P. Mishra, Samir Thoria, Patrice Brissette, Mei Zhang, Tapraj Singh
  • Video analysis using a deep fusion reasoning engine (DFRE)
    Patent number: 11386667
    Abstract: In one embodiment, a video analysis service receives video data captured by one or more cameras at a particular location. The service applies a neural network-based model to portions of the video data, to identify objects within the video data. The service maps outputs of the neural network-based model to symbols using a conceptual space. The outputs of the model comprise the identified objects. The service applies a symbolic reasoning engine to the symbols, to generate an alert. The service sends the alert to a user interface in conjunction with the video data.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: July 12, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Hugo Latapie, Enzo Fenoglio, David Delano Ward, Guillaume Sauvage De Saint Marc, Carole Gridley
  • Anomaly detection triggered proactive rerouting for software as a service (SaaS) application traffic
    Patent number: 11388042
    Abstract: In one embodiment, a device forms a telemetry cluster by applying clustering to telemetry data regarding a plurality of network connections over an access network between a plurality of entities and a remote application. The device applies anomaly detection to the telemetry cluster, to identify one or more anomalies. The device makes a determination as to whether the one or more anomalies are attributable to the remote application or to the access network. The device initiates a corrective measure, based on the determination as to whether the one or more anomalies are attributable to the remote application or to the access network.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: July 12, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Jean-Philippe Vasseur, Grégory Mermoud, Vinay Kumar Kolar
  • Forecasting SDN fabric saturation and machine learning-based flow admission control
    Patent number: 11381518
    Abstract: In one embodiment, a device of a software defined wide area network (SD-WAN) predicts characteristics of a new traffic flow to be admitted to the SD-WAN, based on a set of initial packets of the flow. The device predicts an impact of admitting the flow to the SD-WAN, based in part on extrinsic or exogenous data regarding the SD-WAN. The device admits the flow to the SD-WAN, based on the predicted impact. The supervisory device uses reinforcement learning to adjust one or more call admission control (CAC) parameters of the SD-WAN, based on captured telemetry data regarding the admitted flow.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: July 5, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Patrick Wetterwald, Pascal Thubert, Jean-Philippe Vasseur, Eric Levy-Abegnoli, Stephane Labetoulle
  • Pre-shared secret key capabilities in secure MAC layer communication protocols
    Patent number: 11381391
    Abstract: A first computing node configures for communication with a second computing node according to a secure Media Access Layer (MAC) layer communication protocol. The first computing node transmits a first message, to the second computing node. The first message includes at least a first indication that the first computing node is capable of communicating according to the secure MAC layer communication protocol based on a pre-shared secret key. The first computing nodes determines to communicate with the second computing node according to the secure MAC layer communication protocol based on one of a pre-shared secret key or a distributed shared key. The first computing node, at least in part based on the determining, transmits a second message to the second computing node according to the secure MAC layer communication protocol based on the one of the pre-shared secret key or the distributed shared key.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: July 5, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Lionel Florit, Chennakesava Reddy Gaddam, Annu Singh, Gaurav Kumar, Shwetha Subray Bhandari
  • Context preservation
    Patent number: 11379522
    Abstract: This disclosure describes techniques for performing context preservation related to a conversational user interface of a first user device. The techniques include receiving an inquiry regarding an operational status of a computing resource network and based at least in part on the inquiry, generating a response to the inquiry for display in the conversational user interface. The techniques also include identifying supplemental data as being relevant to the support session, and causing the response to the inquiry and the supplemental data to be displayed concurrently. A data package may be created that represents the support session, including the inquiry, the response, the supplemental data, and an indication that the response and the supplemental data were displayed concurrently. The techniques may include exporting the data package to a second user device for presentation of the support session.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: July 5, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Akshay Sachin Zade, Dineshkumar Jayakumar, Sourav Chakraborty