Carlos Colman Meixner

University of Bristol | UB · Department of Electrical and Electronic Engineering

The future of the manufacturing industry highly depends on digital systems that transform existing production and monitoring systems into autonomous systems fulfilling stringent requirements in terms of availability, reliability, security, low latency, and positioning with high accuracy. In order to meet such requirements, private 5G networks are c...

The adoption of private 5G networks or Non-Public Networks (NPN) by industry verticals is igniting a digital transformation across various sectors and also leading to industry 4.0. This impetus comes from the integration of private wireless networks with 5G capabilities. Currently, a range of innovative applications and use cases are emerging and r...

Along with the adoption of 5G, the development of neutral host solutions provides a unique opportunity for mobile networks operators to accommodate the needs of emerging use-cases and in the consolidation of new business models. By exploiting the concept of network slicing, as one key enabler in the transition to 5G, infrastructure and service prov...

The study of Service Function Chains (SFCs) placement problem is crucial to support services flexibly and use resources efficiently. Solutions should satisfy various Quality of Service requirements, avoid edge resource congestion, and improve service acceptance ratio (SAR). This work presents a novel approach to address these challenges by solving...

This white paper on AI and ML as enablers of beyond 5G (B5G) networks is based on contributions from 5G PPP projects that research, implement and validate 5G and B5G network systems. The white paper introduces the main relevant mechanisms in Artificial Intelligence (AI) and Machine Learning (ML), currently investigated and exploited for 5G and B5G...

5G relies on its pervasive and convergent cloud-based architecture to accomplish its futuristic challenge of being the next-generation communication platform. However, the new perspectives opened by 5G networks do not go unnoticed. Regardless of their motivation or objectives, cyberattackers find in the new 5G ecosystem, including its tenancy-drive...

The introduction of novel approaches that cause a paradigm shift on a technological level can become the driver of innovative business models that benefit from capabilities that may have emerged. Such is the case for 5G which offers an entirely new way of delivering services that affects consumers and even more fundamentally the providers. The intr...

5G network demands massive infrastructure deployment to meet its requirements. The most cost-effective deployment solution is now a challenge. This paper identifies a cost implementation strategy for 5G by reformulating existing cost models. It analyses three geo-type scenarios and calculates the total cost of ownership (TCO) after estimating the C...

We present the design and implementation of the Software-Defined IoT Management (SDIM) framework based on a Software-Defined Networking (SDN) enabled architecture that is purpose-built for edge computing multi-domain Wireless Sensor Networks (WSNs). This framework can dynamically provision IoT devices to enable machine-to-machine communication as w...

5G network demands massive infrastructure deployment to meet its requirements. The most cost-effective deployment solution is now a challenge. This paper identifies a cost implementation strategy for 5G by reformulating existing cost models. It analyses three geo-type scenarios and calculates the total cost of ownership (TCO) after estimating the C...

Smart cities are one of the most important 5G verticals due to their impact on people's life. The neutral host model is key for this vertical, specially to promote the infrastructure sharing between operators for a pervasive infrastructure deployment. However, it demands enhancements in today's virtualization technologies to support geographically...

As a concept to enhance and extend cloud-computing capabilities, edge-computing aims to provide Internet-based services in the close proximity to users by placing IT infrastructures at network edge in forms of tiny datacenters. Taking the advantage of the close distance to end user and access networks, edge datacenters can provide low-latency and c...

The advent of 5G promises to unleash highly pervasive network coverage and density, increased data rate and capacity, optimized instantiation of virtualized resources in a multi-tenant and multi-service network capable of fulfilling the stringent requirements of various heterogeneous applications. Network slicing is a key enabler of 5G to allow mul...

To support ultra-low latency 5G services flexibly and use limited resources in Multi-access Edge Computing (MEC) servers efficiently, the study of latency-aware optimal hierarchical resource allocation for Service Function Chains in 5G becomes essential. In this regard, we address this resource allocation problem, for the first time, by designing a...

This document is focused on the definition and/or design of the 5GCity Infrastructure on each one of the cities involved in 5GCity to support the different Use cases to be deployed in each one of them. To do so, this deliverable provides the needed level of detail (technical and deployment) to achieve the demonstration goals the project has within...

With the massive growth of cutting-edge media services such as Ultra-High Definition (UHD/4K) video and immersive media (i.e. Virtual and Augmented Reality-VR/AR), demand for large investments in a scalable, ubiquitous, and robust communication infrastructure and services increases enormously. The H2020 5GCity project aims to provide a solution for...

Network Function Virtualization (NFV) framework can increase the flexibility and reduce the cost of network functions deployment and operation, but needs to be tailored when this framework is pushed to the domain of edge computing, which is the typical scenario for a 5G neutral host. In such scenario, edge-heavy NFV systems need to address the pres...

The rapid adoption of cutting edge media services such as ultra-high definition (UHD/4K) video and immersive media i.e, virtual and augmented reality (VR/AR), will demand large investments in a scalable, ubiquitous, and robust communication infrastructure and services. The H2020 5GCity project aims to solve such issues and beyond while designing, d...

5G networks will offer advanced functionalities and features such as high throughput, low latency, security and reliability by leveraging technological advances like network virtualization, edge computing and network slicing. The latter will facilitate the entrance of new players in the value chain. Moreover, they will offer a means for network ope...

Software-defined optical networking (SDON) will become the next generation optical network architecture. However, the optical layer and control layer of SDON are vulnerable to cyberattacks. While, data encryption is an effective method to minimize the negative effects of cyberattacks, secure key interchange is its major challenge which can be addre...

Cloud Radio Access Network (C-RAN) will improve mobile radio coordination and resource efficiency by allowing baseband processing unit (BBU) functions to be virtualized and centralized, i.e., deployed in a BBU hotel. We consider a BBU hoteling scheme based on the concept of access cloud network (ACN). An ACN consists of virtualized BBUs (vBBUs) pla...

Today’s businesses increasingly rely on cloud computing, which brings both great opportunities and challenges. Resiliency is a critical challenges given that disruptions due to failures (either accidental or because of disasters or attacks) may entail significant revenue losses (e.g., USD 25.5 billion in 2010 for North America). Such failures may o...

In network virtualization, when a disaster hits a physical network infrastructure, it is likely to break multiple virtual network connections. So, after a disaster occurs, the network operator has to schedule multiple teams of repairmen to fix the failed components, by considering that these elements may be geographically dispersed. An effective sc...

In emerging cellular systems, optical fronthaul is expected to play a major role to support many control operations, e.g., Coordinated Multipoint (CoMP). CoMP is a promising technique for interference mitigation as it can transform interfering signals into joint transmission (reception) in which signals from adjacent cell sites are simultaneously t...

Abstract—Today’s businesses increasingly rely on cloud computing, which brings both great opportunities and challenges. One of the critical challenges is resiliency: disruptions due to failures (either accidental or because of disasters or attacks) may entail significant revenue losses (e.g., US$ 25.5 billion in 2010 for North America). Such failur...

Cloud computing uses cloud networks (CNs) that integrate and virtualize computing servers and communication networks. In a CN, virtual machines (VMs) are interconnected through virtual networks (VNs) provisioned over a physical optical network. A disaster event is a serious threat to cloud computing infrastructure, not only for CN disconnections ca...

Cloud-computing services are provided to consumers through a network of servers and network equipment. Cloud-network (CN) providers virtualize resources [e.g., virtual machine (VM) and virtual network (VN)] for efficient and secure resource allocation. Disasters are one of the worst threats for CNs as they can cause massive disruptions and CN disco...

Today's Internet applications include grid- and cloud-computing services which can be implemented by mapping virtual networks (VNs) over physical infrastructure such as an optical network. VN mapping is a resource-allocation problem where fractions of the resources (e.g., bandwidth and processing) in the physical infrastructure (e.g., optical netwo...

Con la expansión de Internet y el crecimiento de la demanda de capacidad de transmisión de datos, se incrementa el interés por la tecnología de redes Ópticas WDM. Con el enorme ancho de banda proveído por estas redes, gana importancia estratégica el estudio de la prevención y protección contrafallas. La protección basada en p-Cycle es un novedoso e...

The study of protection against failures in WDM optical networks plays strategic importance due to huge bandwidth of optical fiber. The p-Cycle is a novel protection approach based on pre-configured cycles to provide a fast recovery for single link failure. The optimal selection of cycles is the central problem to get a high protection performance...

The study of prevention and protection against failures is a central problem in Optical Networks due to the growth of capacity demand for data transmission, especially with the Internet traffic. Without protection, failures of links or nodes cause huge losses of data. The ρ-Cycle protection is a novel approach based on pre-configured protection cyc...

With the enormous breadth of potential bandwidth provided by WDM optical networks, the study of prevention and protection against failures becomes critical. The protection based on p-Cycles is a novel approach, based on optimal pre-configured cycles of protection to provide speed and efficient recovery. This paper proposes a Multiobjective Optimiza...

The study of prevention and protection against failures is a central problem in Optical Networks due to the growth of capacity demand for data transmission, especially with the Internet traffic. Without protection, failures of links or nodes cause huge losses of data. The ρ-Cycle protection is a novel approach based on pre-configured protection cyc...

The study of prevention and protection against failures is a central problem in Optical Networks due to the growth of capacity demand for data transmission, especially with the Internet traffic. Without protection, failures of links or nodes cause huge losses of data. The ρ- Cycle protection is a novel approach based on pre-configured protection cy...