Christian Esteve Rothenberg

State University of Campinas (UNICAMP) | UNICAMP · Departamento de Engenharia de Computação e Automação Industrial (DCA)

The emergence of quantum computing and related technologies presents opportunities for enhancing network security. The transition towards quantum computational power paves the way for creating strategies to mitigate the constantly advancing threats to network integrity. In response to this technological advancement, our research presents QML-IDS, a...

O paradigma de redes definidas por software (SDN) habilitou diversas inovações em redes de computadores, principalmente na programabilidade do processamento de pacotes. Neste trabalho, investigou-se a viabilidade e os impactos em recursos computacionais do algoritmo de cifra de fluxo Forro14 em hardware de switch programável Tofino usando a linguag...

À medida que a arquitetura de redes 5G amadurece, novos serviços tornam-se disponíveis para as operadoras de redes móveis e provedores de serviço. A implementação de tais serviços, aliada à busca pela independência de fornecedor e potencializada pelas tecnologias SDN, é um dos fatores que impulsionam a inovação. Dentro deste contexto, o cell site g...

Integrating Time-Sensitive Networking (TSN) and wireless networks, like the Fifth Generation of mobile networks (5G), affords deterministic communication with great flexibility and mobility, enabling new services to be used in smart industries. This work aims to provide advances in simulating this integration through OMNeT++ simulator and developin...

A ascensão da utilidade quântica no campo da computação quântica apresenta não apenas desafios, mas também oportunidades para aprimorar a segurança de redes. Esta mudança de paradigma nas capacidades computacionais permite o desenvolvimento de soluções avançadas para contrapor a rápida evolução dos ataques de rede. Aproveitando este avanço tecnológ...

We propose an SGD-based QoT estimation technique that operates on a network-wide scale by transferring gradients among neighboring wavelengths. Simulation results indicate effective and low-complexity QoT estimation using only transponder SNR telemetry.

Recent advancements in video streaming technologies have brought about a new era of user experiences, including gaming and online events. However, ensuring a good user experience remains a significant challenge. The pursuit of self-driving networks has increased the demand for intelligent, edge-based networking solutions. Delivering high-quality vi...

We propose a DNN-based QoT estimation technique that operates on a network-wide scale. The DNN training data is composed of connection paths, frequency slots, and OSNR transponder telemetry, collected from both synthetic and physical connections. Simulation results indicate effective and low-complexity QoT estimation.

A presente invenção se refere a um método para estimar a qualidade de transmissão (Quality of Transmission - QoT) em redes ópticas. De forma geral, tal estimativa é alcançada por meio da estimação da relação sinal/ruído (SNR signal-to-noise ratio), em toda a rede óptica, em que os gradientes calculados para um caminho óptico estabelecido são transf...

Software de geração de gêmeos digitais de redes ópticas avançadas.

This work presents Chat-IBN-RASA, a conversational AI chatbot based on the open-source RASA framework, acting as an Intent Translator component for Intent-Based Networking (IBN) architectures. The IBN-driven RASA chatbot allows users to interact with the network management system using high-level language communication without the need for in-depth...

Os mecanismos de Fast-Reroute (FRR) operam na recuperação de falhas em diversas arquiteturas de redes, prevenindo a degradação dos fluxos de pacotes das aplicações. Os trabalhos que suportam mecanismos de FRR na arquitetura de switches programáveis na linguagem Programming Protocol-independent Packet Processor (P4) aplicam uma abordagem de recupera...

The use of virtual and software-based environments, such as Mininet, has become popular for network experimentation. However, these platforms often have limitations, including low transmission speeds and trade-offs between scalability and performance fidelity. Advances in P4 programmability and new P4 hardware that supports Tofino Native Architectu...

In cellular networks, a set of Base Stations (BSs) might be out of service and failed in the aftermath of natural disasters. One of the promising solutions to fix this situation is to send low altitude drones equipped with a small cellular BS (DBSs) to the target locations. This can provide cellular networks with vital communication links and make...

We discuss the potential of deploying a network digital twin to support future data-driven optical networks implementing advanced telemetry. Use cases of intent-based connection allocation and soft-failure localization are addressed.

We demonstrate a packet-optical differentiated survivability mechanism implemented in P4 switches using gNMI telemetry. The controller detects the premium slice interruption and switches it to an alternative path reducing the throughput of the regular slice.

We demonstrate packet-optical intent-based networking with survivability intents in a Mininet-Optical testbed. The intent agent negotiates intents with users based on path availability and allocates end-to-end connectivity services.

Demand for wireless video streaming services increases with users expecting to access high-quality video streaming experiences. Ensuring Quality of Experience (QoE) is quite challenging due to varying bandwidth and time constraints. Since most of today’s mobile devices are equipped with multiple network interfaces, one promising approach is to bene...

End-to-End (E2E) services in beyond 5G (B5G) networks are expected to be built upon resources and services distributed in multi-domain, multi-technology environments. In such scenarios, key challenges around multi-domain management and collaboration need to be tackled. ETSI Zero-touch network and Service Management (ZSM) architectural framework pro...

A Comunicação entre dispositivos quânticos vem avançando em direção a redes de topologias complexas e de longa distâncias. No entanto, limitações intrínsecas dos sinais quânticos fazem com que eles não possam ser replicados ou amplificados, dificultando a adoção das técnicas tradicionais de roteamento. Além disso, a heterogeneidade de tecnologias e...

In optical transport networks, failure localization is usually triggered as a response to alarms and significant anomalous behaviors. However, the recent evolution of network control and management leveraging software-defined networking (SDN) and streaming-based telemetry opens up new possibilities for automated methods that can localize even subtl...

Intelligent Transportation Systems, or ITS for short, includes a variety of services and applications such as road traffic management, traveler information systems, public transit system management, and autonomous vehicles, to name a few. ITS are expected to be an integral part of urban planning and future smart cities, contributing to improved roa...

Cloud-Network Slice (CNS) is defined as an end-to-end infrastructure composed by computing, networking, and storage resources and it is expected to be a key enabler for novel verticals such as Industry 4.0, IoT and Vehicular Networks. This paper presents the design, implementation and integration of the Architecture for Orchestration and Management...

Flexibility is considered a key feature of 5G softwarization to deliver a timely response to changes in network requirements that may be caused by traffic variation, user mobility, dynamic network function chains, slice lifecycle management operations, among others. In this article, we evolve the upf-bpf1 open-source project by proposing a new desi...

This paper focuses on hybrid pipeline designs for User Plane Function and next-generation NodeB leveraging target-specific features and an insightful discussion of P4 and target challenges and limitations. The entire or disaggregated UPF runs on P4 targets and allocates packet processing data paths in P4 hardware or DPDK/x86 software based on flow...

The research community has recently proposed several solutions based on modern programmable switches to detect entirely in the data plane the flows exceeding pre-determined thra eshold in a time window, i.e., Heavy Hitters (HH). This is commonly achieved by dividing the network stream into fixed time slots and identifying each separately without co...

A presente invenção propõe um método de localização de falhas em uma rede óptica física/real por meio da interpretação de análises probabilísticas realizadas por uma rede neural treinada. Tal rede neural foi treinada inicialmente com dados de uma rede padrão sem falhas e a partir de dados de falhas suaves e abruptas gerados de forma artificial na r...

Terrestrial infrastructure-based wireless networks do not always guarantee their resources will be shared uniformly by nodes in vehicular networks. This is due mainly to the uneven and dynamic geographical distribution of vehicles and path loss effects. In this paper, we leverage multiple fifth-generation (5G) unmanned aerial vehicles (UAVs) to enh...

The edge computing infrastructure can scale from datacenters to single device. The well-known technology for fast packet processing is DPDK, which has outstanding performance regarding the throughput and latency. However, there are some drawbacks when the usage is done in the edge: (i) the polling mechanism for packet processing keeps the CPU exclu...

The growth of cloud application services delivered through data centers with varying traffic demands unveils limitations of traditional load balancing methods. Aiming to attend evolving scenarios and improve the overall network performance, this paper proposes a load balancing method based on an Artificial Neural Network (ANN) in the context of Kno...

Para trocar dados a longas distâncias, em redes com topologias complexas, construída com tecnologias heterogêneas e gerenciadas por organizações independentes, são necessários métodos que permitam que protocolos quânticos se conectem às implementações de hardware subjacentes de forma transparente. No entanto, os sinais quânticos são frágeis e não p...

We demonstrate a soft-failure localization framework using SDN-based network-wide telemetry. Soft failures are generated in a small-scale laboratory environment and collected in an SDN architecture. Failure localization is accomplished by ML algorithms.

Soft-failure localization frameworks typically use if-else rules to localize failures based on the received telemetry data. However, in certain cases, particularly in disaggregated networks, some devices may not implement telemetry, or their telemetry may not be readily available. Alternatively, machine-learning-based (ML-based) frameworks can auto...

Vehicular networks are critical pieces in support of advanced intelligent transportation systems (ITS). These networks are formed by vehicles that can be connected to one another as well as to the infrastructure, and are subject to constant topology changes, disconnections, and data congestion. Each ITS application could have a different set of com...

Autonomous management capability is the main pillar for paving Zero-touch Networks and efficiently deliver and operate use cases under the light of 5G requirements. To this end, Closed Control Loop (CCL), Intent-Based Networking (IBN), and Machine Learning (ML) are regarded as enablers to automatically executed all operational processes, ideally wi...

5G communication technologies promise reduced latency and increased throughput, among other features. The so-called enhanced Mobile Broadband (eMBB) type of services will contribute to further adoption of video streaming services. In this work, we use a realistic emulation environment based on 5G traces to investigate how Dynamic Adaptive Streaming...

Cloud-network slicing is a promising approach to serve vertical industries delivering their services over multiple administrative and technological domains. However, there are numerous open challenges to provide end-to-end slices due to complex business and engineering requirements from service and resource providers. This article presents a refere...

In-band Network Telemetry (INT) is gaining traction as an advanced network monitoring approach. Despite a few recent initiatives to orchestrate the collection of in-band network statistics, state-of-the-art approaches fall short when it comes to efficiently collect telemetry items while subjected to real-world constraints. In this letter, we propos...

In this paper, we introduce a novel dynamic controller assignment algorithm targeting connected vehicle services and applications, also known as Internet of Vehicles (IoV). The proposed approach considers a hierarchically distributed control plane, decoupled from the data plane, and uses vehicle location and control traffic load to perform controll...

A computação em nuvem tem se tornado cada vez mais frequente em empresas e universidades, principalmente devido ao fato da nuvem computacional ser mais facilmente administrada uma vez que seu ambiente esteja devidamente configurado. Entretanto, há resistência na implantação de ambientes de computação de alto desempenho em nuvem e isso, provavelment...

Targeting soft failure localization, we present a machine learning approach using SDN streaming telemetry of network-wide parameters. The artificial neural network only requires a few training scenarios to achieve adequate interpolation performance. The framework implementation is validated using gNMI telemetry in an emulated NSFNet topology.

HTTP adaptive streaming (HAS) is the de-facto standard for video services over the Internet delivering increased Quality of Experience (QoE) as a function of the network status. Such adaptive streaming atop HTTP relies predominantly on TCP as the reliable transport protocol. Recently, QUIC, an alternative of TCP transport, has emerged to overcome T...