Cisco Technology, Inc.

Sergio Mena

Jerome Henry

Malcolm Muir Smith

Lorenzo Granai

Xiaoqing Zhu

Jiantao Fu

Embodiments for virtual reality (VR) and augmented reality (AR) scenes updates at VR/AR devices in a network are described. Network traffic for the scene updates is divided into traffic layers such as coarse grain (CG) layer traffic and a fine grain (FG) layer traffic for a give VR/AR scene update. The CG layer traffic is scheduled first in resource units (RUs) of a plurality a transmission opportunity (TXOP) for a VR device and FG layer traffic is scheduled in remaining RUs during the TXOP to provide synchronous viewing experiences to users of the VR/AR devices.

Synchronicity for virtual reality/augmented reality interactive sessions in wireless networks

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.

Preserving transmission properties of real-time scenes in an environment when an increasing number of users join a session

A controller of a network, including routers to forward flows of packets originated at senders to receivers along distinct network paths each including multiple links, such that the flows merge at a common link that imposes a traffic bottleneck on the flows, receives from one or more of the routers router reports that each indicate an aggregate packet loss that represents an aggregate of packet losses experienced by each of the flows at the common link. The controller sends to the senders aggregate loss reports each including the aggregate packet loss so that the senders have common packet loss information for the common link on which to base decisions as to whether to switch from delay-based to loss-based congestion control modes when implementing dual-mode congestion control of the flows. In lieu of the controller, another example employs in-band router messages populated with packet losses by the routers the messages traverse.

Network-based coordination of loss/delay mode for congestion control of latency-sensitive flows

A method comprises obtaining a wireless channel variance value. The wireless channel variance value is indicative of a degradation to a specified bandwidth of the wireless channel as a function of conditions of the wireless channel. The method further includes determining a reliably usable bandwidth value of the wireless channel as a function of the wireless channel variance value. The method further includes determining a data frame transmission rate associated with a particular application running on the client device, wherein the data frame transmission rate is constrained by a function of the reliably usable bandwidth value and a quality of experience (QoE) level value.

Growing community of inventors

Saubraz, Switzerland

Sergio Mena