Marginless Operation of Field-Trial Network Experiencing ageing

Over 228km of field-deployed fiber, we demonstrate successful dynamic operation of an SDN-based optical network, free of unnecessary margins under fiber/amplifier ageing and filter ageing, leveraging directed learning of QoT from monitoring.

On the performance prediction of optical transmission systems in presence of filtering

We investigate the impact of optical filtering from routing nodes in optical networks, and how to predict it. From measurements in presence of tight optical filtering, we propose a new method relying on an extended back-to-back model for improved QoT prediction.

FOLC-SR: Fast and Optimal Loop-free IGP Convergence using Segment Routing

Large networks usually rely a link-state IGP protocol (such as IS-IS or OSPF) to route packets inside their network. In case of topology change, routers recompute their shortest paths toward each destination using Dijkstra's algorithm. Even id routers update their forwarding table (FIB) quickly, transient forwarding contradictions between routers may ...

FOLC-SR: Fast and Optimal Loop-free Convergence using Segment Routing for link-state protocols.

In large networks, operators usually rely on a link-state IGP protocol (such as IS-IS or OSPF) to route packets inside their network. In case of network topology changes, routers can efficiently recompute their shortest paths toward each destination by using the Dijkstra's algorithm. Even if routers update their forwarding table ...

System Design Considerations for Internet of Things (IoT) with category-M devices in LTE networks

Successful network deployment of the Internet of Things (IoT) requires many critical system design considerations. This paper highlights how an LTE system supporting Cat-M devices can be engineered to deal with the numerous constraints the 3GPP standard imposes for this new device type. Fundamental changes to the control channels, control ...

End-to-End VoIP and Real-Time Multimedia Peering Across MSOs and Other Service Provider IP Networks

We first present the VoIP architecture based on available technologies for ENUM-based IP-address resolution of the E.164 telephone numbers, SIP signaling between the service provider VoIP servers, IP peering between the IP/MPLS networks and end-to-end QoS for the VoIP signaling and bearer traffic, and possibly call admission control. We then ...

Novel bitloading algorithms for coded G.fast DSL transmission with linear and nonlinear precoding

Precoding is a technique that counteracts the crosstalk in downlink DSL transmission. While linear precoding is adequate in VDSL2 because of the moderate crosstalk environment, this might no longer be the case in G.fast, which uses higher frequencies and therefore is affected by higher crosstalk levels. In this contribution we ...

ORCHESTRA: Cross-layer and dynamic network orchestration based on optical performance monitoring

An optical network, like any system, has to be observable before being subject to optimization, and this is the main capability that ORCHESTRA network introduces. ORCHESTRA's high observability relies on information provided by the coherent transceivers that can be extended, almost for free, to operate as software defined optical performance ...

Deterministic Dynamic Optical Network: The enabler of Tactile Internet

The ultimate purpose of Tactile Internet is to free human beings from the burden of repetitive automatic daily tasks, so they can focus on the goal of their actions rather than how their actions are actually performed. Tactile Internet will rely on Edge Cloud, a network architecture based on distributed ...