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Aiming at satisfying in a cost-effective manner the forecast traffic growth that future mobile networks will need to support, traditional distributed Radio Access Networks (RANs) are evolving towards centralized architectures. Specifically, the Cloud-RAN (C-RAN) architecture has shown that can alleviate to some extent the ever increasing Total Cost of Ownership in mobile networks. The current trend...
Networks are currently essential for computing: It is therefore essential to guarantee the quality of network links in order to ensure a proper operation of computing systems. However, a widespread deployment of network monitoring devices might not be economically feasible. In this paper, we propose the use of Programmable System-on-Chip FPGAs (PSoCs) for enabling a comprehensive testing of networks...
The expected explosion of services offered in the cloud has revealed new paradigms in telecommunication networks and motivated research to satisfy the needs arising. Interconnection between facilities hosting computing resources or between computing resources and end-users may require service-specific Service Level Agreement (SLA) parameters. In this paper, we study the minimum connectivity requirements...
Radio Access Network (RAN) costs savings are expected in future Cloud RAN (C-RAN). Differently from traditional distributed RAN architecture, in C-RAN Remote Radio Heads (RRH) from different sites can share baseband processing resources from virtualized Base Band Unit (BBU) pools placed in few central locations (CO). Due to the stringent requirements of the several interfaces needed in C-RAN, optical...
An isolated dc-dc series-resonant converter that is controlled by a combination of variable-frequency and secondary-side-switch delay-time control is employed as the output stage of the on-board charger module (OBCM) that operates with a wide battery-voltage range. The delay-time control which is implemented by the modulation of secondary-side switches is used to assist the conventional variable-switching-frequency...
An algorithm for Customer Virtual Network (CVN) reconfiguration with QoS constraints and bandwidth guarantees is presented. An MPLS virtual network supporting CVNs is pre-planned or dynamically reconfigured. Exhaustive simulations results show 19% CAPEX savings when the MPLS network is reconfigured.
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