Green Optical Slot Switching Torus for Mega-Datacenters

  • Bigo S.
  • Dupas A.
  • Jenneve P.
  • Mardoyan H.
  • Mestre Adrover M.
  • Pointurier Y.
  • Uscumlic B.

We propose a torus topology to interconnect Optical Slot Switching rings using elastic-rate transponders. Power consumption in mega-datacenters can be reduced by more than 3x and interfaces and cables by more than 500x when compared with the traditional Ethernet architecture.

Power efficient service differentiation based on traffic-aware survivable elastic optical networks

  • Morea A.

This study assesses the feasibility of defining different service classes based on protection schemes in core optical networks. Moreover, we propose a dedicated energy saving strategy for each of the service classes in order to minimize the overall power consumption of the network. Four classes of service are proposed: platinum, ...

Elasticity for dynamic recovery in optical transport networks

  • Charlet G.
  • Morea A.
  • Verchere D.

We provide the advantages of 'just-enough' recovery due to the joint use of elastic optical networks with OTN switches in case of optical recovery

Complexity and Flexible Grid Networks

  • Morea A.

Flexible grids promise to revolutionize the net- work design and control plane of future optical networks by providing increased adaptability of spectral resources to heterogeneous network conditions. Unfortunately, flexibility is often provided at the cost of additional complexity in the network management. In this paper, we consider the optimization of ...

Cost benchmarking of different WSS sizes in OXCs

  • Bertolini M.
  • Morea A.
  • Zami T.

We show how the size and the contention property of the add/drop blocks in the optical nodes impact the quantity of devices of the CONUS WDM network with incremental traffic.

Impact of traffic fluctuations and dedicated protection on energy savings in dynamic elastic optical networks

  • Morea A.
  • Turus I.
  • Verchere D.

We present an analysis of the energy savings when taking into account a realistic traffic model. Daily and weekly traffic fluctuations as well as yearly traffic growth are taken into account when analyzing the power consumption given by the powered-on equipment as well as the IDLE opto-electronic devices. We also ...

Load-based Transparent Reach Maximization in Elastic Optical Networks

  • Alberto Bononi
  • Morea A.
  • Paolo Serena

We propose a novel power-selection strategy for maximizing the transparent reach in elastic optical networks based on knowledge of the average wavelength load, and we quantify the savings in regenerations with respect to using the full-load standard reach.

A dimensional comparison between embedded 3D-printed and silicon microchannels

  • Jeffers N.
  • O'Connor J.
  • Punch J.
  • Stafford J.

The subject of this paper is the dimensional characterization of embedded mi- crochannel arrays created using contemporary 3D-printing fabrication techniques. Conven- tional microchannel arrays, fabricated using deep reactive ion etching techniques (DRIE) and wet-etching (KOH), are used as a benchmark for comparison. Rectangular and trapezoidal cross-sectional shapes were investigated. The ...

NNET: a Socket API and protocol stack for Process-to-Content Network Communication

  • Gallo M.
  • Lin Gu
  • Perino D.
  • Varvello M.

Inter-Process Communication (IPC) refers to the set of methods which enable data exchange among processes. When two processes are remote, or run on machines connected via a network, IPC is realized through the socket interface and the networking protocol stack implemented at end-hosts. Today, most computer networks rely on the ...

Investigation of Vapour Chamber Performance with a Concentrated Heat Source

  • Kempers R.
  • Ravache E.
  • Robinson A.
  • Siedel S.

This work aims to characterize the performance of a commercially available solid heat sink (SHS) and a vapour chamber heat sink (VCHS) with a small localized heat source. The heat sinks were tested under forced convection conditions in a dedicated wind tunnel. Heat transfer and temperature measurements facilitated the estimation ...

Development of a naturally aspirated thermosyphon for power amplifier cooling

  • Kempers R.
  • Kerslake S.
  • Robinson A.
  • Siedel S.

This paper details the early development steps of a two-phase thermosyphon thermal management solution for power amplifiers (PA) in the telecommunication industry. These components, attached to a vertical PCB within an enclosure between the RF filter and a natural or forced convection heat sink, dissipate a large amount of heat ...

On the Way to 5G

  • Zakrzewska A.

This presentation analyses new technologies that could enable 5G networking, discusses potential standardisation and development directions, and presents recent research efforts in the area of future mobile networks. This overview was prepared at the Technical University of Denmark (DTU) prior to joining Bell Labs.

Adaptive DC-DC Converter for Efficient 4G Macro-Cell Base Station

  • Ferling D.
  • Fernandéz Y.
  • Jueschke P.
  • Maugars P.
  • Nguyen Trieu Luan Le
  • Philippe D.
  • Retrouvey J.

Abstract—This article presents a new solution for DC-to-DC converters realized for 4G (LTE) macro cell base stations with improved efficiency. The concepts proposed in the EARTH project target a factor two reduction of power consumption in 4G base stations. The solutions are presented and detailed and required DC-to-DC converter specifications ...

NetCurator: Content Curation Made Passively

  • Ben Houidi Z.
  • Finamore A.
  • Mellia M.
  • Scavo G.
  • Teixeira R.
  • Traverso S.

The Internet today serves as a large content distribution platform. It carries a diversity of content types from traditional news, TV series, and movies to specialized blogs and family pictures shared over social networks. The recognition that the amount of information available online today overwhelms most users is giving rise ...

Experimental characterization of novel microdiffuser elements

  • Ehrlich L.
  • Jeffers N.
  • Punch J.
  • Stafford J.

Micropumps can play a significant role in thermal management applications, as a component of microfluidic cooling systems. For next-generation high density optical communication systems, in particular, heat flux levels are sufficiently high to require a microfluidic circuit for cooling. Valveless piezoelectrically-actuated micropumps are a particularly promising technology to be deployed ...

Benchmarking of a novel contactless characterisation method for micro thermoelectric modules

  • Hickey S.
  • Jeffers N.
  • Punch J.

Significant challenges exist in the thermal control of Photonics Integrated Circuits (PICs) for use in optical communications. Increasing component density coupled with greater functionality is leading to higher device-level heat fluxes, stretching the capabilities of conventional cooling methods using thermoelectric modules (TEMs). A tailored thermal control solution incorporating micro thermoelectric ...

Ethernet VPN for Next-Generation Services

  • Hankins G.
  • Rabadan J.

Ethernet VPN (EVPN) introduces a new model for Ethernet services delivery. With EVPN, service providers can meet evolving demands for higher speeds, sophisticated QoS and guaranteed SLAs. EVPN can support the requirements driven by new applications in a way that existing technologies can’t.

Calculating & Composing Elementary Risks: Novel Decision Support System for Cyber Defence

  • Dubus S.
  • Kanoun W.
  • Papillon S.

Since we started to rely more than ever on Information and Communications Technologies (ICT) in every aspect of modern life, we witness an accelerating growth in volume and complexity of drastic cyber attacks. In this cyber realm, where new vulnerabilities are daily discovered, organizations strive to manage risks dynamically & ...

Passive content curation based on HTTP logs

  • Ben Houidi Z.
  • Finamore A.
  • Mellia M.
  • Scavo G.
  • Teixeira R.
  • Traverso S.

Content curation refers to assisting users to identify relevant and interesting content in the overwhelming amount of online content available today. Existing content curation services rely either on experts or on the wisdom of the crowds to promote content. This paper designs HotNet, a passive, crowdsource-based content curation system. HotNet ...

5GNOW: Intermediate Transceiver and Frame Structure Concepts and Results

  • Chen Y.
  • Dryjanski M.
  • Gaspar I.
  • Kasparick M.
  • Ktenas D.
  • Michailow N.
  • Piertrcyk S.
  • Schaich F.
  • Wild T.
  • Wunder G.

This paper provides intermediate transceiver and frame structure concepts and corresponding results for the European FP7 research project 5GNOW. The Unified Frame Structure concept is presented which supports an integrated 5G air interface, capable of dealing both with broadband data services and small packet services within the same band. Waveforms ...