Field trial of a 15 Tb/s adaptive and gridless OXC supporting elastic 1000-fold all-optical bandwidth granularity

An adaptive gridless OXC is implemented using a 3D-MEMS optical backplane plus optical modules (sub-systems) that provide elastic spectrum and time switching functionality. The OXC adapts its architecture on demand to fulfill the switching requirements of incoming traffic. The system is implemented in a seven-node network linked by installed fiber and is shown to provide suitable architectures on demand for three scenarios with increasing traffic and switching complexity. In the most complex scenario, signals of mixed bit-rates and modulation formats are successfully switched with flexible per-channel allocation of spectrum, time and space, achieving over 1000-fold bandwidth granularity and 1.5 Tb/s throughput with good end-to-end performance

First demonstration of all-optical programmable SDM/TDM intra data centre and WDM inter-DCN communication

We successfully demonstrate a flat-structured DCN powered by large-port-count fibre-switch-based OCS, PLZT-switch enabled TDM and MEFs supported SDM. The inter-DCN ToR-to-ToR direct optical connections are setup through metro/core networks using all-optical SDM/WDM converters

Field Trial of a 1.5 Tb/s Adaptive and Gridless OXC Supporting Elastic 1000-Fold Bandwidth Granularity

An adaptive gridless OXC is demonstrated using field fiber. The OXC adapts its architecture on demand to switch variable type signals in frequency, time and space domain with 1000-fold bandwidth granularity and 1.5 Tb/s throughput

First demonstration of service-differentiated converged optical sub-wavelength and LTE/WiFi networks over GEANT

A converged optical-wireless testbed is formed integrating TSON sub-wavelength networking in UK and the NITOS wireless solution in Greece. End-to-end service provisioning and flow differentiation are demonstrated across two networks communicating over the GEANT. © OSA 2015

A converged network architecture for energy efficient mobile cloud computing

Mobile computation offloading has been identified as a key enabling technology to overcome the inherent processing power and storage constraints of mobile end devices. To satisfy the low-latency requirements of content-rich mobile applications, existing mobile cloud computing solutions allow mobile devices to access the required resources by accessing a nearby resource-rich cloudlet, suffering increased capital and operational expenditures. To address this issue, in this paper we propose an infrastructure and architectural approach based on the orchestrated planning and operation of Optical Data Center networks and Wireless Access networks. To this end, a novel formulation based on a multi-objective Non Linear Programming model is presented that considers energy efficient virtual infrastructure planning over the converged wireless, optical network interconnecting DCs with mobile devices, taking a holistic view of the infrastructure. Our modelling results identify trends and trade-offs related to end-to-end service delay, resource requirements and energy consumption levels of the infrastructure across the various technology domains. © 2014 IFIP

Wireless and wired network convergence in support of Cloud and mobile Cloud services: The CONTENT approach

The project CONTENT proposes a next generation ubiquitous converged infrastructure to support Cloud and mobile Cloud computing services. The proposed infrastructure facilitates interconnection of fixed and mobile end users with computational resources through a heterogeneous network integrating optical metro and wireless access networks. In this paper, we present the CONTENT converged network Infrastructure and layered architecture which deploys crossdomain virualization as a key technology. In accordance to the CONTENT proposal this paper also presents a novel virtual infrastructure planning scheme that takes a holistic approach considering jointly the network and computational resources. © VDE VERLAG GMBH, Berlin, Offenbach, Germany

Planning of dynamic mobile optical virtual network infrastructures supporting cloud services

This paper proposes a next generation ubiquitous converged infrastructure to support Cloud and mobile Cloud computing services. The proposed infrastructure facilitates interconnection of fixed and mobile end users with computational resources through a heterogeneous network integrating optical metro and wireless access networks. To satisfy the low-latency requirements of content-rich mobile applications, a novel stochastic virtual infrastructure planning model that takes a holistic approach considering jointly the network and computational resources is presented. Our modelling results identify trends and trade-offs related to end-to-end service delay, resource requirements and energy consumption levels of the infrastructure across the various technology domains under traffic uncertainty. © 2014 IEEE

CONTENT project: Considerations towards a cloud-based internetworking paradigm

Although cloud computing and the Software Defined Network (SDN) framework are fundamentally changing the way we think about network services, multi-domain and multitechnology problems are not sufficiently investigated. These multidomain, end-to-end problems concern communication paths that span from the wireless access and the wireless backhaul networks to the IT resources through optical networks. In this paper we present the CONTENT project approach to network and infrastructure virtualization over heterogeneous, wireless and metro optical networks, that can be used to provide end-to-end cloud services. The project goal is to drive innovation across multi-technology infrastructures and allow ICT to be delivered and consumed as a service by Virtual Network Operators. The communication mechanics between wireless and optical domains and the physical layer abstractions of a CONTENT Virtual Network are presented and the relation of the proposed approach with the SDN framework is investigated