公开(公告)号：US20230283636A1

公开(公告)日：2023-09-07

申请号：US17686612

申请日：2022-03-04

Applicant: Cisco Technology, Inc.

Inventor： Olivier Roques ,  Luca Muscariello ,  Giovanna Carofiglio

IPC: H04L9/40 ,  H04L51/06 ,  H04L51/046

CPC classification number: H04L63/166 ,  H04L63/0442 ,  H04L51/06 ,  H04L51/046

Abstract: In one embodiment, a delivery service provided by a device receives one or more Messaging Layer Security commit messages comprising a plurality of public and private keys for a Messaging Layer Security group. The delivery service identifies subsets of the plurality of public and private keys to be sent to different destination subgroups in the Messaging Layer Security group. The delivery service maps each of the subsets to Hybrid Information-Centric Networking names. The delivery service sends, based on the Hybrid Information-Centric Networking names, the subsets of the plurality of public and private keys to destination subgroups in the Messaging Layer Security group.

公开(公告)号：US20220360618A1

公开(公告)日：2022-11-10

申请号：US17871556

申请日：2022-07-22

Applicant: Cisco Technology, Inc.

Inventor： Giovanna Carofiglio ,  Giulio Grassi ,  Enrico Loparco ,  Michele Papalini ,  Jacques Samain

IPC: H04L65/80 ,  H04L65/75 ,  H04N21/442 ,  H04L65/65

Abstract: A method includes, at a media bridge configured to distribute a plurality of media streams among a plurality of client devices connected to the media bridge over a network during a real-time communication (RTC) instance, receiving a plurality of quality of experience (QoE) preferences from the plurality of client devices via the media bridge, the plurality of QoE preferences being transmitted as a real-time transport protocol (RTP) control protocol (RTCP) extension header of a transmitted data packet. The method also includes receiving a plurality of QoE metrics at the media bridge, and in response to a determination that a degradation in network conditions of the network has occurred, downgrading at least one of the plurality of media streams based on the plurality of QoE preferences.

公开(公告)号：US11050724B2

公开(公告)日：2021-06-29

申请号：US15928265

申请日：2018-03-22

Applicant: Cisco Technology, Inc.

Inventor： Fabio De Gaspari ,  Alberto Compagno ,  Luca Muscariello ,  Giovanna Carofiglio

IPC: H04L29/06 ,  H04L9/08

Abstract: A producer communicates over a network with a user application in an infrastructure-as-a-service (IaaS) and an IaaS node. The producer encrypts content with first encryption using a first key and second encryption using a second key, to produce twice encrypted content. The producer encrypts the second key with attribute-based encryption and symmetric encryption using an IaaS key, to produce a twice encrypted second key. The producer provides to the user application the twice encrypted content, the twice encrypted second key, and key information configured to remove the first encryption from the twice encrypted content. The producer provides to the IaaS node the IaaS key to enable the IaaS node to remove the symmetric encryption from the twice encrypted second key, such that the user application and the IaaS node are constrained to exchange with each other key-related information and intermediate decryption results in order to recover the content.

公开(公告)号：US11038899B1

公开(公告)日：2021-06-15

申请号：US17014097

申请日：2020-09-08

Applicant: Cisco Technology, Inc.

Inventor： Giovanna Carofiglio ,  Michele Papalini ,  Jacques Olivier Samain ,  Xuan Zeng ,  Luca Muscariello ,  Carl Nathan Buckles

IPC: H04N7/15 ,  H04L29/06

Abstract: Presented herein are methods for dynamic management of names and of named-based requests for media flows in an Information-Centric Network (ICN)-based real-time communication system. The use of different naming schemes on contribution segments and on distribution segments in such architectures results in an effective low latency and scalable communication model based on the notion of active speakers regardless of the underlying mapping between active speakers and participants controlled by the media bridge. Operations are performed both at client side and at media bridge side to dynamically manage binding of names to speakers, while minimizing overhead and complexity of operations involved by a change of active speaker/quality/layout.

公开(公告)号：US10931559B2

公开(公告)日：2021-02-23

申请号：US16178967

申请日：2018-11-02

Applicant: Cisco Technology, Inc.

Inventor： Marcel Paul Sosthène Enguehard ,  Jordan François Jean Augé ,  Giovanna Carofiglio ,  Michele Papalini

IPC: H04L12/751 ,  H04L12/24

Abstract: A network of routers configure resource nodes connected to the network in accordance with a configuration model including configuration objects that imply resources. A router device among the network of router devices receives, from forwarding paths in the network relative to the router device, originated at the resource nodes and that indicate resources supported by the resource nodes. The router device creates mappings of the resources as advertised to the forwarding paths. The router device receives from the network an Intent request to create a configuration object among the configuration objects, and determines whether the configuration object matches a resource in the mappings. If the configuration object matches a resource in the mappings, the router device generates a new Intent request that identifies the resource, specifically, and forwards the new Intent request along the forwarding path mapped to the resource.

公开(公告)号：US10924540B2

公开(公告)日：2021-02-16

申请号：US15943775

申请日：2018-04-03

Applicant: Cisco Technology, Inc.

Inventor： Alberto Compagno ,  Luca Muscariello ,  Giovanna Carofiglio ,  Marcel Paul Enguehard

IPC: H04L29/08 ,  G06F16/901 ,  G06F16/22 ,  H04W72/04 ,  H04W84/18

Abstract: In one embodiment, a device in a network receives an interest request for one or more pieces of content data available in the network. The interest request specifies the one or more pieces of content data via one or more bits sets in a content request bitmap of the interest request, each bit of the content request bitmap being associated with a different piece of content data. The device compares the content request bitmap to a content availability bitmap in a forwarding information base (FIB) of the device that is associated with a particular interface of the device and each bit of the content availability bitmap indicates whether a particular piece of content data is available via the particular interface. The device forwards the interest request via the particular interface, based on the comparison between the content request bitmap and the content availability bitmap in the FIB of the device.

公开(公告)号：US20210037069A1

公开(公告)日：2021-02-04

申请号：US17074955

申请日：2020-10-20

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Xiaoqing Zhu ,  Giovanna Carofiglio

IPC: H04L29/06

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.

公开(公告)号：US10805825B2

公开(公告)日：2020-10-13

申请号：US15658638

申请日：2017-07-25

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Luca Muscariello ,  Giovanna Carofiglio

IPC: H04W28/02 ,  H04W72/12 ,  H04N21/238 ,  H04L29/08 ,  H04W84/12

Abstract: A method is provided in one example embodiment and may include determining each station of a plurality of stations connected to a WiFi access point that are to receive downlink video transmissions from the WiFi access point, wherein the WiFi access point is connected to an Information-Centric Networking-based (ICN-based) network; associating each station of the plurality of stations to each of a corresponding ICN face of a plurality of ICN faces maintained by the WiFi access point; and managing a downlink transmission buffer for each station of the plurality of stations based, at least in part, a modulation and coding scheme (MCS) associated with downlink video transmissions for each station of the plurality of stations, wherein each downlink transmission buffer is associated with the corresponding ICN face associated with each station.

公开(公告)号：US20220368729A1

公开(公告)日：2022-11-17

申请号：US17320606

申请日：2021-05-14

Applicant: Cisco Technology, Inc.

Inventor： Jacques Samain ,  Giovanna Carofiglio ,  Giulio Grassi ,  Enrico Loparco ,  Michele Papalini

IPC: H04L29/06

Abstract: A method includes, at a media bridge configured to distribute a plurality of media streams among a plurality of client devices connected to the media bridge over a network, receiving the plurality of media streams from the plurality of client devices via the media bridge. The media bridge connects the plurality of client devices. The method further includes assigning a pair of names for each of the plurality of media streams. The pair of names include a contribution name and a distribution name. The method further includes presenting a first list to the plurality of client devices. The first list including a plurality of the distribution names for the plurality of media streams received from the plurality of client devices. The method further includes providing an indication of a current active speaker within the plurality of media streams via a signaling process.

公开(公告)号：US11245677B2

公开(公告)日：2022-02-08

申请号：US16044672

申请日：2018-07-25

Applicant: Cisco Technology, Inc.

Inventor： Alberto Compagno ,  Michele Papalini ,  Luca Muscariello ,  Giovanna Carofiglio

IPC: H04L29/06 ,  H04L9/32

Abstract: In various implementations, a network device receives a packet from a content producer. The packet includes data and further includes a signature generated by the content producer, based on the data, using a private key of the content producer. The network device modifies the packet without affecting the signature and forwards the modified packet toward a user device. The network device also sends the user device a manifest specifying how the packet was modified. The user device receives the packet and manifest, restores the packet's original data based on the manifest, and verifies the original data using the signature and a public key corresponding to the private key of the content producer. In response to verification of the original data, an application on the user device is allowed to use the data.