Media Image
ricard vilalta
Company
CTTC
Position
Senior Researcher

Publications

White papers

Network Applications: Opening up 5G and beyond networks

5GPPP - Software Network Working Group
As part of the 5G-PPP Initiative, the Software Network Working Group prepared this white paper to demystify the concept of the Network Applications. In fact, the Network Application ecosystem is more than the introduction of new vertical applications that have interaction capabilities.
Conferences

Demo Paper: "Slice Grouping for Transport Network Slices Using Hierarchical Multi-domain SDN Controllers"

2023 Optical Fiber Communications Conference and Exhibition (OFC2023)
This demonstration showcases how TeraFlowSDN provides support for hierarchical control of multiple heterogeneous SDN domains (through IP, microwave and optical technologies). Different transport slices are offered with multiple SLAs and grouped to optimize resources.
Conferences

End-to-End Inter-domain Transport Network Slice Management Using DLT-enabled Cloud-based SDN Controllers (invited paper)

2023 Optical Fiber Communications Conference and Exhibition (OFC2023)
This paper discusses the advantages and challenges of multiple architectures that consider the negotiation of inter-domain transport network slices using blockchain technologies. To this end, we present results obtained using cloud-native ETSI TeraFlowSDN controller.
Conferences

Dynamic bypass of wavelength switching in SDN-enabled WDM VNTs over SDM Networks with high bit-rate optical channels

2023 Optical Fiber Communications Conference and Exhibition (OFC2023)
We experimentally demonstrate an SDN architecture for WDM VNTs to offload pass-through high bit-rate optical channels from overloaded ROADMs by provisioning spatial channels between the source and destination ROADM’s add-drop stages, and rerouting the optical channels.
Conferences

Demo paper: “Demonstration of a Scalable and Efficient Pipeline for ML-based Optical Monitoring”

2023 Optical Fiber Communications Conference and Exhibition (OFC2023)
We demonstrate a scalable processing of OPM data using ML to detect anomalies in optical services at run time. A dashboard will show operational SDN controller metrics, raw OPM data, and the ML assessment result.
Conferences

P5: Event-driven Policy Framework for P4-based Traffic Engineering

2023 IEEE 24th International Conference on High-Performance Switching and Routing (IEEE HPSR 2023)
We present P5; an event-driven policy framework that allows network operators to realize end-to-end policies on top of P4-based data planes in an intuitive and effective manner.
Journals

Flexible and scalable ML-based diagnosis module for optical networks: a security use case

2023 - Journal of Optical Communications and Networking Vol. 15, Issue 8, pp. C155-C165
To support the pervasive digital evolution, optical network infrastructures must be able to quickly and effectively adapt to changes arising from traffic dynamicity or external factors such as faults and attacks.
Conferences

Dynamic Reconfiguration of WDM Virtual Network Topology over SDM Networks for Spatial Channel Failure Recovery with gRPC Telemetry

2022 Optical Fiber Communications Conference and Exhibition (OFC2022)
We experimentally demonstrate the dynamic reconfiguration of WDM VNTs in response to SDM spatial channel failures. We present an SDN control architecture with gRPC-telemetry and analytics to detect failures and restore failed virtual WDM links.
Conferences

Microservice-Based Unsupervised Anomaly Detection Loop for Optical Networks

2022 Optical Fiber Communications Conference and Exhibition (OFC2022)
Unsupervised learning (UL) is a technique to detect previously unseen anomalies without needing labeled datasets. We propose the integration of a scalable UL-based inference component in the monitoring loop of an SDN-controlled optical network.
Conferences

Architecture to Deploy and Operate a Digital Twin Optical Network

2022 Optical Fiber Communications Conference and Exhibition (OFC2022)
We propose an architecture to deploy Digital Twin Optical Networks (DTON), which provide a virtual representation of the physical optical network. DTON allow the assessment of specific behaviors before actual implementation in the physical network.
Conferences

Demonstration of Zero-touch Device and L3-VPN Service Management using the TeraFlow Cloud-native SDN Controller

2022 Optical Fiber Communications Conference and Exhibition (OFC2022)
We demonstrate zero-touch device bootstrapping, monitoring, and L3-VPN service management using the novel TeraFlow OS SDN controller prototype.
Conferences

Experimental Demonstration of End-to-end NFV Orchestration on Top of the ADRENALINE Testbed

2022 IEEE International Conference on Network Softwarization (NetSoft2022)
This demonstration will showcase the end-to-end orchestration of virtual network functions in the full-fledged ADRENALINE Testbed Cloud Platform expanding from the edge to the cloud.
Conferences

Dynamic Upgrade/Downgrade of WDM Link Capacity in SDN-enabled WDM VNTs over SDM Networks

2022 European Conference on Optical Communication (ECOC2022)
We present a WDM over SDM control system that detects overloaded/underloaded WDM links between ROADMs and provisions/removes virtual WDM links in response to dynamic traffic changes in SDN-enabled WDM VNTs over SDM Networks.
Conferences

Experimental Demonstration of Transport Network Slicing with SLA Using the TeraFlowSDN Controller

2022 European Conference on Optical Communication (ECOC2022)
This demo presents the TeraFlowSDN controller as a solution to provide dedicated transport network slices with SLAs. To this end, the demo details how the interface between an NFV orchestrator and the SDN controller can provide transport network slices using protected disjoint paths.
Conferences

Towards Assessing Effects of Isolation on Determinism in Multi-Application Scenarios

2022 ACM SIGCOMM - FIRA'22: Workshop on Future of Internet Routing & Addressing
In addition to the already present heterogeneity in the network service and application ecosystem, new challenges come in the form of emerging applications which require deterministic delay performance characteristics that go beyond traditional SLAs.