Piero Castoldi

Piero Castoldi
Scuola Superiore Sant'Anna | SSSUP · Institute of Communication, lnformation and Perception Technologies TECIP

PhD

About

587
Publications
86,344
Reads
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6,892
Citations
Introduction
Piero Castoldi has been Professor in Telecommunications area-leader of the "Networks and Services" area since 2001, and Coordinator of the "Communications" Macro-area since Jan. 2012 at the TeCIP Institute at Scuola Superiore Sant'Anna in Pisa (Italy). He has been involved in several european projects (STRONGEST, e-photon/ONE, e-photon/ONE+, BONE and has been coordinator of the research activity of several corporate-sponsored projects (with Ericsson and Rete Ferroviaria Italiana).
Additional affiliations
January 2005 - January 2010
Consorzio Nazionale Interuniversitario per le Telecomunicazioni
Position
  • Managing Director
March 2001 - present
Scuola Superiore Sant'Anna
Position
  • Professor (Associate)
December 1997 - February 2001
Università di Parma
Position
  • Research Associate

Publications

Publications (587)
Article
Nowadays, the fiber spectrum is only partially exploited, i.e., mainly in the C-band and more recently in the C + L-band, where the fiber attenuation profile experiences the minimum. Thus, fiber communications technology—amplifiers, switching, transceivers, etc.—and networking solutions are mature for those spectrum bands. However, the continuous i...
Article
Service chaining is becoming one of the most considered service deployment frameworks in the context of Network Function Virtualization (NFV) in edge and data center environments, conveniently supported by automatic connectivity configurations offered by Software Defined Networking (SDN). Current research on the topic is focusing on how to guarante...
Article
Full-text available
Autonomic networking and monitoring will drive the evolution of next generation software defined networking (SDN) optical networks towards the zero touch networking paradigm. Optical telemetry services will play a key role to enable advanced network awareness at device and component granularity. Optical disaggregation is pushing the adoption of ope...
Article
Edge Computing, along with Software Defined Networking and Network Function Virtualization, are causing network infrastructures to become as distributed clouds extended to the edge with services provided as dynamically established sequences of virtualized functions (i.e., dynamic service chains) thereby elastically addressing different processing r...
Preprint
Full-text available
In the modern era of artificial intelligence, increasingly sophisticated artificial neural networks (ANNs) are implemented, which pose challenges in terms of execution speed and power consumption. To tackle this problem, recent research on reduced-precision ANNs opened the possibility to exploit analog hardware for neuromorphic acceleration. In thi...
Conference Paper
Full-text available
This paper presents potentials and challenges of disaggregated metro-edge networking based on open packet-optical nodes encompassing coherent pluggable modules, SONiC open operating system, and P4-based packet switching programmability.
Article
Full-text available
Software Defined Networking represents a mature technology for the control of optical networks, though all open controller implementations present in the literature still lack the adequate level of maturity and completeness to be considered for (pre)-production network deployments. This work aims at experimenting on, assessing and discussing the us...
Conference Paper
Exploiting bands beyond C+L can effectively upgrade network capacity, but Stimulated Raman Scattering (SRS) affects wideband-transmission, potentially degrading active channels. Upgrades exploiting E- and S-band are compared in terms of capacity and number of reconfigurations.
Article
We propose mode-group (MG) division multiplexing in a MIMO-free configuration to increase the capacity and the flexibility in reduced-complexity spatial division multiplexed metro networks. We take in account innovative few mode fibers (FMFs) supporting a large number of spatial modes, which allow to select suitable combinations of MGs providing li...
Article
Few Mode Fibers (FMF) and Space Division Multiplexing (SDM) are an attractive solution to offer high capacity in optical networks. Although transmission along FMF presents several issues mainly due to the cross-talk among modes, the use of Multiple Input Multiple Output (MIMO) coherent receivers permits to limit the impact of such physical impairme...
Article
In the last twenty years, optical networks have witnessed recurrent changes in their management and control architecture. In this paper, we present an historical timeline and a future perspective of the evolution of optical network management and control deployed for Wavelength Switched Optical Networks (WSON), Elastic Optical Networks (EON) and (m...
Conference Paper
Full-text available
The first implementation of the OneM2M IoT platform used to control optical networks is presented. The platform provides remarkable scalability performance particularly as a function of the number of monitored devices.
Article
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This paper proposes a new paradigm for control plane in Time Sensitive Networks (TSN). An SDN controller proactively instructs network elements on the reconfigurations to perform locally if some specific events occur (e.g., failures, performance degradations). Instructions are given in the form of Finite State Machines (FSMs), which store informati...
Article
Full-text available
The new radio technologies (i.e. 5G and beyond) will allow a new generation of innovative services operated by vertical industries (e.g. robotic cloud, autonomous vehicles, etc.) with more stringent QoS requirements, especially in terms of end-to-end latency. Other technological changes, such as Network Function Virtualization (NFV) and Software-De...
Article
Full-text available
Optical network disaggregation is attracting significant consensus to avoid vendor lock-in solutions. However, the presence of network controllers, nodes, and hardware/software components potentially provided by different entities and manufacturers may lead to remarkable responsibility issues in case of service level degradation. We propose the use...
Preprint
In the modern era of artificial intelligence, increasingly sophisticated artificial neural networks (ANNs) are implemented, which pose challenges in terms of execution speed and power consumption. To tackle this problem, recent research on reduced-precision ANNs opened the possibility to exploit analog hardware for neuromorphic acceleration. In thi...
Article
Full-text available
Reconfigurable linear optical processors can be used to perform linear transformations and are instrumental in effectively computing matrix–vector multiplications required in each neural network layer. In this paper, we characterize and compare two thermally tuned photonic integrated processors realized in silicon-on-insulator and silicon nitride p...
Conference Paper
Full-text available
Effective telemetry streaming for disaggregated whitebox is discussed, focusing on implementation issues. A novel gRPC peer-to-peer telemetry for next-generation AI-equipped xPonders is proposed and evaluated in a disaggregated testbed exploiting OpenConfig and OpenROADM models.
Conference Paper
Full-text available
A programmable P4 node performing neural network acceleration is demonstrated. The node implements both traffic feature extraction and neural networking computations. Cyber security use case targeting DDoS attack detection is deployed. © 2021 The Author(s) 1. Introduction Bringing in-network Artificial Intelligence (AI) is hot topic in the developm...
Article
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Telemetry data acquisition is becoming crucial for efficient detection and timely reaction in the case of network status changes, such as failures. Streaming telemetry data to many collectors might be hindered by scalability issues, causing delay in localization and detection procedures. Providing efficient mechanisms for managing the massive telem...
Conference Paper
Full-text available
This demo shows a 5G X-haul testbed enhanced with P4 switches implementing the offloading of the User Plane Function module. The P4 code includes GTP protocol encapsulation/decapsulation function, fully configurable N3-N6- N9 steering, and advanced online monitoring of the experienced latency metadata.
Article
Full-text available
5G Networks revolution will be enabled by deep integration of Software Defined Networking (SDN) and Network Function Virtualization (NFV) to support multi-tenancy, per-user and per-application quality of service and experience. However, full softwarization and current SDN platforms may not be able to sustain the complexity and the heterogeneity of...
Conference Paper
Currently, most of the Emergency Service interventions involve as operators on board of ambulances only nurses and volunteers, without the presence of doctors. In this work REC-VISIO 118, a new system of remote medical tutoring to the operators involved in emergency interventions, is illustrated. The system is composed by a subsystem worn by the op...
Article
Optical interconnection networks promise to overcome the limitations of current electronic switching fabrics, enabling higher throughput, lower latency, and lower power consumption. Multi-plane architectures, based on multiple optical switching domains (e.g., space, time, wavelength, orbital angular momentum), are gaining research attention because...
Conference Paper
Full-text available
We present a reduced-precision integrated photonic electronic multiply-accumulate (MAC) neuron with ADC-embedded nonlinearity. The proposed device trades off speed with resolution, outperforming both analog and digital electronic solutions in terms of speed and energy consumption. © 2021 The Author(s) 1. Introduction In recent years, deep neural ne...
Conference Paper
This demo shows how crowd management can benefit from 5G connectivity and accelerated edge cloud AI-based computation to achieve low latency and scalability with respect to a mobile device-based physical distancing computation.
Conference Paper
Effective control of pluggable transceivers in SONiC-based packet-optical nodes is demonstrated. A workflow for multi-layer recovery upon soft failure detection is validated, showing no traffic disruption and fast node-driven coordination between packet and optical operations.
Conference Paper
The characterization of a broadband Si 3 N 4 integrated linear optical processor operating in the C-band is reported. The impact of losses on the processor accuracy is discussed towards the photonic implementation of state-of-the-art neural networks.
Conference Paper
This paper presents Mode Group Division Multiplexing (MGDM), discussing transmission aspects, node architecture, and provisioning.
Conference Paper
This paper provides an overview of state of art and challenges for open packet-optical node solutions based on SONiC open operating system, coherent pluggable modules and P4-based packet switching programmability for edge networking.
Conference Paper
Full-text available
Traffic monitoring through in-band telemetry is extended up to the User Equipment (UE), providing accurate e2e latency measurement. The UE becomes aware of its experienced service performance, enabling autonomous operations for faster automatic source-based Edge-Cloud steering.
Article
Full-text available
Network services in 5G will be rolled out as pools of virtual network functions (VNFs) exploiting the advantages of both software-defined networking and network function virtualization. In this context, 5G network services are envisaged as ordered sequences of VNFs resulting in the so-called VNF Forwarding Graphs (VNFFGs). Such VNFs can be allocate...
Article
Full-text available
Fifth generation softwarized network systems will make it possible to flexibly partition the network infrastructure into logically independent network slices, hosting end-to-end network services able to dynamically meet the diverse requirements of vertical industries. However, the high dynamicity of NFV-related operations and the interdependence of...
Article
Multi-band (MB) optical transmission promises to extend the lifetime of existing optical fibre infrastructures, which usually transmit within the C-band only, with C+L-band being also used in a few high-capacity links. In this work, we propose a physical-layer-aware provisioning scheme tailored for MB systems. This solution utilizes the physical la...
Chapter
In future 5G infrastructures, network services will be deployed through sets of Virtual Network Functions (VNFs) leveraging the advantages of both Software Defined Networking (SDN) and Network Function Virtualization (NFV). A network service is composed of an ordered sequence of VNFs, i.e., VNF Forwarding Graph (VNFFG), deployed across distributed...
Chapter
Next generation networks – spanning from wide area networks to intra-datacenters – are expected to encompass devices and sub-devices from different vendors. Inter operability and vendor neutrality are now key topics for researchers and companies as a way to reduce costs avoiding to be tied to a single vendor. Also the management system is expected...
Article
Full-text available
Use of disaggregated equipment in optical transport networks is emerging as an attractive solution to bring flexibility and break vendor lock-in dependencies. The disaggregation process requires standard protocols and interfaces between the control plane and network equipment. NETCONF has been selected as the standard protocol, and multiple initiat...
Article
The Open Computing Language (OpenCL) is increasingly adopted for programming processors with reconfigurable hardware acceleration. The 5G telecommunication infrastructure, imposing strong latency constraints on the managed communications, may benefit from OpenCL-designed accelerated processing. This paper presents the first study to evaluate OpenCL...
Conference Paper
The demo shows the effectiveness of a low latency remote control based on 5G and image processing at the edge exploiting artificial intelligence and GPUs to make a robot rover slalom between posts.
Article
Full-text available
Photonic solutions are today a mature industrial reality concerning high speed, high throughput data communication and switching infrastructures. It is still a matter of investigation to what extent photonics will play a role in next-generation computing architectures. In particular, due to the recent outstanding achievements of artificial neural n...
Article
Full-text available
Modern controllers for software‐defined networks (SDN) enable the execution of arbitrary SDN applications (eg, Network Address Translation (NAT), traffic monitors) that may be exploited by an overarching set of services (eg, application‐layer orchestrators) to build even richer services. To this purpose, the above overarching services require a mec...
Conference Paper
Full-text available
We propose the use of blockchain for the ratification of QoT performance in multi-domain networks, where a transparent lightpath traverses several domains. End-to-end QoT is guaranteed by transferring "OSNR blocks" among domains' controllers. Experimental demonstration shows the feasibility of the method and its scalability.
Article
Optical networks have historically been designed to be operated statically. Connections are overprovisioned so that they remain uninterrupted over several (e.g., 10) years, using high physical-layer margins to cover the evolution of the physical conditions and modeling uncertainties. As a first step, we can increase the efficiency without sacrifici...