1,220 research outputs found
Management and Service-aware Networking Architectures (MANA) for Future Internet Position Paper: System Functions, Capabilities and Requirements
Future Internet (FI) research and development threads have recently been gaining momentum all over the world and as such the international race to create a new generation Internet is in full swing: GENI, Asia Future Internet, Future Internet Forum Korea, European Union Future Internet Assembly (FIA). This is a position paper identifying the research orientation with a time horizon of 10 years, together with the key challenges for the capabilities in the Management and Service-aware Networking Architectures (MANA) part of the Future Internet (FI) allowing for parallel and federated Internet(s)
The Design and Implementation of the Transatlantic Mission-Oriented Production and Experimental Networks
In this paper we present the design and implementation of the mission-oriented USLHCNet for HEP research community and the UltraLight network testbed. The design philosophy for these networks is to help meet the data-intensive computing challenges of the next generation of particle physics experiments with a comprehensive, network-focused approach. Instead of treating the network as a static, unchanging and unmanaged set of intercomputer links, we are developing and using it as a dynamic, configurable, and closely monitored resource that is managed from end-to-end. In this paper we will present our work in the various areas of the project including infrastructure construction, protocol research and application development. Our goal is to construct a next-generation global system that is able to meet the data processing, distribution, access and analysis needs of the particle physics community
Next-Generation Transport Networks Leveraging Universal Traffic Switching and Flexible Optical Transponders
Recent developments in communication technology contributed to the growth of network traffic exponentially. Cost per bit has to necessarily suffer an inverse trend, posing several challenges to network operators. Optical transport networks are no exception to this. On one hand, they have to keep up with the expectations of data speed, volume, and growth at the agreed quality-of-service (QoS), while on the other hand, a steep downward trend of the cost per bit is a matter of concern. Thus, the proper selection of network architecture, technology, resiliency schemes, and traffic handling contributes to the total cost of ownership (TCO). In this context, this chapter looks into the network architectures, including the optical transport network (OTN) switch (both traditional and universal), resiliency schemes (protection and restoration), flexible-rate line interfaces, and an overall strategy of handover in between metro and core networks. A design framework is also described and used to support the case studies reported in this chapter
Supporting QoE/QoS-aware end-to-end network slicing in future 5G-enabled optical networks
Copyright 2019 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.Network slicing with Quality of Experience/Quality of Service (QoE/QoS) guarantees is seen as one of the key enablers
of future 5G networks. Nevertheless, it poses several challenges in both resource provisioning and management that
need to be addressed for the efficient end-to-end service delivery. In particular, network slice deployments considering
operation across several domains and network segments, require of inter-domain configurations, continuous monitoring,
potential actuations, inter-slice isolation, among other, in order to be provisioned and maintained, looking forward to
guaranteeing their assured Key Performance Indicators (KPIs). In such scenario, optical networks are of prime
importance, enabling the inter-connectivity between multiple far away segments and Points of Presence (PoPs). In light
of this, in this paper we present an architecture design enabling network slice provisioning for 5G service chaining in
multi-segment/multi-domain optical network scenarios. The presented design is enriched with a policy-based monitoring
and actuation framework able to maintain the desired QoS for the provisioned end-to-end (E2E) network slice. We
experimentally validated the proposal against real slice deployments and traffic generation, providing a proof of concept
for the presented architecture, with special emphasis in the demonstration of the actuation framework as a key element
for quality guarantees.Peer ReviewedPostprint (published version
cISP: A Speed-of-Light Internet Service Provider
Low latency is a requirement for a variety of interactive network
applications. The Internet, however, is not optimized for latency. We thus
explore the design of cost-effective wide-area networks that move data over
paths very close to great-circle paths, at speeds very close to the speed of
light in vacuum. Our cISP design augments the Internet's fiber with free-space
wireless connectivity. cISP addresses the fundamental challenge of
simultaneously providing low latency and scalable bandwidth, while accounting
for numerous practical factors ranging from transmission tower availability to
packet queuing. We show that instantiations of cISP across the contiguous
United States and Europe would achieve mean latencies within 5% of that
achievable using great-circle paths at the speed of light, over medium and long
distances. Further, we estimate that the economic value from such networks
would substantially exceed their expense
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