Luís Cordeiro

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The evolution of Software-Defined Networking and the overall acceptance of protocols such as OpenFlow, demonstrates the added value of decoupling the data plane from the control plane. Existing SDN Controllers enable the expected flexibility from such networks by dynamically providing a fine-grained control of each flow. However, hardware-specific(More)
EuQoS is the acronym of “End-to-end Quality of Service support over heterogeneous networks”, which is an IST research project aimed at building a complete QoS framework, addressing all the relevant network layers, protocols, and technologies. EuQoS customers will be able to subscribe to the EuQoS system, for which we are currently proposing and developing(More)
CityFlow is an EU FP7 project, aiming to create a set of multi-autonomous-system OpenFlow experiments on the OFELIA infrastructure to emulate a city of one million inhabitants. In this demo, we demonstrate all of the key components of the CityFlow experimentation stack working together.
Software defined Networking (SDN) such as Open-Flow decouples the control plane from forwarding devices and embeds it into one or more external entities called controllers. We implemented a framework in OpenFlow through which business customers receive higher Quality of Service (QoS) than best-effort customers in all conditions (e.g. failure conditions). In(More)
This paper discusses the use of the Policy Based Network paradigm, COPS (Common Open Policy Service) and NSIS (Next Steps In Signalling) frameworks being developed by the IETF, in the context of the European Project EuQoS (End-to-End Quality of Service over Heterogeneous Networks). An overview of the EuQoS architecture is provided followed by the analysis(More)
In typical video-to-video transmissions, security and confidentiality is becoming an issue of greater importance, but these features come at a cost. In mobile environments, where CPU time is a valuable resource, such features should be thoroughly thought over as they usually require heavy computational resources. In this paper a short analysis on existing(More)
The location of data centres is crucial when mobile network operators are moving towards cloudified mobile networks to optimize resource utilization and to improve performance of services. Quality of Experience (QoE) can be enhanced in terms of content access latency, by placing user content at locations where they will be present in the future. The(More)
Cloud computing enables the on-demand delivery of resources for a multitude of services and gives the opportunity for small agile companies to compete with large industries. In the telco world, cloud computing is currently mostly used by mobile network operators (MNO) for hosting non-critical support services and selling cloud services such as applications(More)