Patents by Inventor Pascal Thubert

Pascal Thubert 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).

  • Patent number: 10952115
    Abstract: In one embodiment, a supervisory service for a wireless network receives telemetry data indicative of client movement of wireless clients of the network within a location. The service determines a measure of client movement stability for the location, based on the received telemetry data. The service selects one or more of the clients for wireless access point reassignment, when the determined measure of client movement stability exceeds a predefined threshold. The service causes the selected one or more clients to switch from a first wireless access point at the location to a second wireless access point at the location.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: March 16, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Jean-Philippe Vasseur, Pascal Thubert, Jerome Henry
  • Publication number: 20210075580
    Abstract: In one embodiment, an access point is configured with a plurality of resource units (RUs). Each RU is configured to use a frequency range that differs from frequency ranges used by the other RUs. The access point receives first information indicating, for each RU, a first signal quality that the station associates with the respective RU. The access point receives second information indicating, for each RU, a second signal quality that the station associates with the respective RU. The access point further determines, based on at least the first information and the second information, a pattern indicating a recurring signal quality that the station associates with each RU. The access point uses the pattern to allocate one of the RUs for communicating with the station.
    Type: Application
    Filed: September 9, 2019
    Publication date: March 11, 2021
    Inventors: Pascal Thubert, Jerome Henry, Patrick Michel Pierre Wetterwald, Eric Michel Levy-Abegnoli
  • Publication number: 20210075718
    Abstract: In one embodiment, a method is performed. A spine node in communication with a network may determine a subtree of a shadow cone of the spine node. The subtree may comprise a plurality of nodes and a plurality of links connecting pairs of the nodes. The spine node may determine a disaggregated route to a first leaf node to which a disaggregated prefix may be attached. The disaggregated route may be propagated to the plurality of the nodes of the subtree.
    Type: Application
    Filed: November 23, 2020
    Publication date: March 11, 2021
    Applicant: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Nagendra Kumar Nainar, Carlos M. Pignataro
  • Patent number: 10945296
    Abstract: In one embodiment, a parent device in an unaligned wireless network may determine a superframe comprising a header timeslot followed by a plurality of sub timeslots. The parent device may transmit, to a plurality of child devices in the unaligned wireless network, a beacon during the header timeslot, wherein the beacon comprises i) synchronization information used by the plurality of child devices to synchronize to the header timeslot and ii) reservation information that indicates one or more reserved sub timeslots of the plurality of sub timeslots. The parent device may receive, from a particular child device of the plurality of child devices, a message during a particular sub timeslot of the plurality of sub timeslots that is different than the one or more reserved sub timeslots.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: March 9, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Feiliang Wang, Huimin She, Patrick Wetterwald
  • Publication number: 20210068137
    Abstract: The aspects ensure redundancy by including at least two access points (APs), in an environment, that are capable of serving at least one station (STA). A first AP functions as a primary AP and a second AP functions as a secondary AP. The primary AP can send a layer 2 (L2) control message, for example, a Target Wait Time (TWT) response, to a STA. The primary AP may then wait for an indication (e.g., an Acknowledgement (ACK) signal) of receipt of the L2 control message. The primary AP can also provide the L2 control message to the secondary AP that covers the same room. In at least some configurations, the L2 control message includes metadata about when the secondary AP is to send the copy of the L2 control message over the air. The secondary AP can then relay the L2 control message to the STA.
    Type: Application
    Filed: September 4, 2019
    Publication date: March 4, 2021
    Applicant: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Patrick Wetterwald, Eric Levy-Abegnoli
  • Publication number: 20210058478
    Abstract: Presented herein are techniques that aggregate messages using a subroot node. A plurality of messages is received from a corresponding plurality of nodes by a subroot node acting as a proxy in a wireless mesh sub-network. The plurality of messages is aggregated into a single message according to a template. The single message is wireless transmitted to a root node, wherein the root node has a wired connection to a network.
    Type: Application
    Filed: August 20, 2019
    Publication date: February 25, 2021
    Inventors: Pascal Thubert, Robert Edgar Barton, Jerome Henry, Eric Levy-Abegnoli
  • Publication number: 20210045034
    Abstract: In one embodiment, a method by a wireless network device in a wireless data network comprises: joining a non-storing mode destination-oriented directed acyclic graph (DODAG) in response to receiving a multicast DODAG information object (DIO) message originated by a root device; generating and transmitting a unicast destination advertisement (DAO) message destined for the root device and indicating the wireless network device has joined the DODAG; advertising as a subroot of a subDAG in the DODAG, based on outputting a second message specifying subDAG information identifying the subDAG; receiving a second unicast DAO message generated by a child network device in the subDAG and addressed to the wireless network device, the second unicast DAO message indicating the child network device has joined the subDAG; and generating and sending a third unicast DAO message to the root device specifying the child network device is reachable via the wireless network device.
    Type: Application
    Filed: August 8, 2019
    Publication date: February 11, 2021
    Inventors: Pascal Thubert, Huimin She
  • Publication number: 20210037069
    Abstract: Embodiments include technologies for creating a manifest for a conferencing event in a network, adding a name tag identifying the conferencing event to the manifest, receiving an interest packet including one or more parameters indicating a named flow being produced at a source node, adding content metadata of the named flow to the manifest, and sending the manifest to the source node. Further embodiments include adding, to the manifest, session-level metadata associated with a user of the source node. Embodiments include receiving a second interest packet with one or more second parameters identifying a user of a client node, where the second interest packet indicates a request to authorize the user of the client node to subscribe to the conferencing event. In further embodiments, session-level metadata associated with the user is added to the manifest if the user is authorized to subscribe to the conferencing event.
    Type: Application
    Filed: October 20, 2020
    Publication date: February 4, 2021
    Inventors: Pascal Thubert, Xiaoqing Zhu, Giovanna Carofiglio
  • Patent number: 10911400
    Abstract: In one embodiment, a tracking device detects a first device connecting to a computer network, and forces an install of fake routing information on the first device that is unique to the first device. Upon detecting a second device connecting to the computer network, the second device having at least one identifying property in common with the first device and at least one identifying property differing from the first device, the tracking device may then query the second device to determine if the second device knows the fake routing information unique to the first device. As such, the tracking device may then determine that the second device is the first device in response to the second device knowing the fake routing information unique to the first device.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: February 2, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Eric Levy-Abegnoli, Patrick Wetterwald, Pascal Thubert
  • Patent number: 10911262
    Abstract: According to one or more embodiments of the disclosure, a first tunnel router may receive a reservation request to establish a deterministic path between a first node and a second node. The first tunnel router may determine, based on the reservation request, a destination address of the second node. The first tunnel router may identify, based on the destination address of the second node, a second tunnel router associated with the second node. The first tunnel router may encapsulate a deterministic packet sent by the first towards the second node into a tunnel packet, wherein a multicast address in a header of the tunnel packet is set to the destination address of the second node. The first tunnel router can forward the tunnel packet along the deterministic path. The multicast address in the header of the tunnel packet causes nodes to send the tunnel packet according to the deterministic path.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: February 2, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Rekha Ramachandran, Pascal Thubert
  • Patent number: 10904157
    Abstract: Telemetry for cloud switches queuing excursion may be provided. A first hysteresis threshold and a second hysteresis threshold for a queue of the network switch may be specified. Next, a queue position relative to the first hysteresis threshold and the second hysteresis threshold may be determined for each incoming packets for the queue. A number of crossings including the queue position passing the first hysteresis threshold and subsequently passing the second hysteresis threshold in a first predetermined time period may be determined. A number of data packets being sent to the queue of the network switch may then be altered based on one or more of the number of crossings, the first hysteresis threshold, and the second hysteresis threshold.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: January 26, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Pascal Thubert, Jerome Henry, Robert E. Barton
  • Patent number: 10904882
    Abstract: Disclosed are systems, methods, and computer-readable media for integrating deterministic packet transmissions scheduling of short range local area networks (e.g., 6TiSCH networks) with deterministic packet transmission scheduling for wireless networks such as LTE/4G/5G networks. In one aspect, a wireless communication network includes a plurality of first nodes configured to communicate using a first communication protocol; and a second node configured to communicate with the plurality of first nodes using the first communication protocol and configured to communicate with a third node using a second communication protocol, the second node being further configured to map corresponding transmission schedule of the first communication protocol to a second transmission schedule for the second communication protocol.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: January 26, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Pascal Thubert, Jp Vasseur, Eric Levy-Abegnoli, Patrick Wetterwald
  • Publication number: 20210021520
    Abstract: In one embodiment, a method comprises: receiving, by a switching device in a deterministic network, a first data packet associated with an identified flow of data packets, and queuing the first data packet for deterministic transmission at a deterministic transmit instance to a next-hop device in the deterministic network; detecting, by the switching device, reception of a newest data packet associated with the identified flow and before the deterministic transmission of the first data packet; and prioritizing for the identified flow, by the switching device, the newest data packet based on deterministically transmitting, at the deterministic transmit instance, the newest data packet instead of the first data packet.
    Type: Application
    Filed: July 19, 2019
    Publication date: January 21, 2021
    Inventors: PATRICK WETTERWALD, ERIC MICHEL LEVY-ABEGNOLI, PASCAL THUBERT
  • Publication number: 20210021510
    Abstract: In one embodiment, a particular device in a deterministic network performs classification of one or more packets of a traffic flow between a source and a destination in the deterministic network. The particular device determines, based on the classification of the one or more packets, a requirement of the traffic flow. The particular device performs, based on the requirement, a packet operation on at least one packet of the traffic flow. The particular device sends packets of the traffic flow towards the destination via two or more paths in the deterministic network.
    Type: Application
    Filed: October 2, 2020
    Publication date: January 21, 2021
    Inventors: Patrick Wetterwald, Eric Levy-Abegnoli, Pascal Thubert
  • Publication number: 20210022098
    Abstract: In one embodiment, a method comprises: receiving, by a constrained wireless network device comprising a local clock, a plurality of messages from respective neighboring wireless network devices advertising as available parent devices in a directed acyclic graph of a time-synchronized network that is synchronized to a master clock device; determining, by the constrained wireless network device, a corresponding timing error of the local clock relative to each message output by the corresponding available parent device; and executing, by the constrained wireless network device, a distributed time synchronization of the local clock with the master clock device based on correlating the respective timing errors relative to the local clock.
    Type: Application
    Filed: July 15, 2019
    Publication date: January 21, 2021
    Inventors: PASCAL THUBERT, PATRICK WETTERWALD, JEAN-PHILIPPE VASSEUR, ERIC MICHEL LEVY-ABEGNOLI
  • Patent number: 10897516
    Abstract: In one embodiment, a method comprises: storing, by a computing device in a non-deterministic data network, a plurality of data packets originated by a source device into a mass storage medium associated with the computing device; receiving, by the computing device, a data request originated by an access point device providing deterministic reachability to a deterministic device in a deterministic data network providing reachability to multiple deterministic devices, the request specifying one or more deterministic constraints associated with reaching the deterministic device; and supplying, by the computing device, a selected one of the data packets to the access point device for delivery of data stored therein to the deterministic device according to the one or more deterministic constraints.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: January 19, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Patrick Wetterwald, Pascal Thubert, Maik Guenter Seewald, Eric Michel Levy-Abegnoli
  • Publication number: 20210014159
    Abstract: In one illustrative example, a network node connected in a network fabric may identify that it is established as part of a multicast distribution tree for forwarding multicast traffic from a source node to one or more host receiver devices of a multicast group. In response, the network node may propagate in the network fabric a message for advertising the network node as a candidate local source node at which to join the multicast group. The message for advertising may include data such as a reachability metric. The propagation of the message may be part of a flooding of such messages in the network fabric. The network node serving as the candidate local source node may thereafter “locally” join a host receiver device in the multicast group at the network node so that the device may receive the multicast traffic from the source node via the network node.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 14, 2021
    Inventors: Mankamana Prasad Mishra, Pascal Thubert, IJsbrand Wijnands, Krishnaswamy Ananthamurthy, Ramakrishnan Chokkanathapuram Sundaram, Stig Ingvar Venaas
  • Patent number: 10887224
    Abstract: In one embodiment, a method comprises attaching, by a constrained network device in a data network, to a first parent network device in a tree-based storing mode topology in response to receiving a first advertisement message generated by the first parent network device; outputting to the first parent network device a plurality of routes stored in the constrained network device, the routes identifying destinations reachable via the constrained network device; determining, by the constrained network device, that the first parent network device is encountering saturation of stored routes based on the constrained network device receiving a second advertisement message from the first parent network device; and eliminating, by the constrained network device, the saturation encountered by the first parent network device based on moving at least a portion of the routes from the first parent network device to a second parent network device in the tree-based storing mode topology.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: January 5, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Pascal Thubert, Huimin She, Patrick Wetterwald, Li Zhao
  • Publication number: 20200413354
    Abstract: In one embodiment, a method comprises: detecting, by a constrained network device in a low power and lossy network, a loss of synchronization with a neighboring network device based on a determined absence of a prescribed transmission activity by the neighboring network device within a prescribed listening interval that is limited to a prescribed guard time according to a wireless time-slotted transmission protocol; and executing, by the constrained network device, localized sync recovery based on shifting a next listening interval to a shifted listening interval based on selectively shifting, based on a selected shift amount, the prescribed guard time of a corresponding next instance of the prescribed listening interval, enabling the constrained network device to recover synchronization with the neighboring network device based on detecting the prescribed transmission activity that is outside the prescribed listening interval and within the shifted listening interval.
    Type: Application
    Filed: June 25, 2019
    Publication date: December 31, 2020
    Inventors: PASCAL THUBERT, JEAN-PHILIPPE VASSEUR, ERIC MICHEL LEVY-ABEGNOLI, PATRICK WETTERWALD
  • Patent number: 10880344
    Abstract: Embodiments include technologies for creating a manifest for a conferencing event in a network, adding a name tag identifying the conferencing event to the manifest, receiving an interest packet including one or more parameters indicating a named flow being produced at a source node, adding content metadata of the named flow to the manifest, and sending the manifest to the source node. Further embodiments include adding, to the manifest, session-level metadata associated with a user of the source node. Embodiments include receiving a second interest packet with one or more second parameters identifying a user of a client node, where the second interest packet indicates a request to authorize the user of the client node to subscribe to the conferencing event. In further embodiments, session-level metadata associated with the user is added to the manifest if the user is authorized to subscribe to the conferencing event.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: December 29, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Pascal Thubert, Xiaoqing Zhu, Giovanna Carofiglio