Bell Labs Technical Journal最新文献_第9页

Optimized ASIC/FPGA Design Flow for Energy Efficient Network Nodes 面向节能网络节点的优化ASIC/FPGA设计流程

Bell Labs Technical Journal Pub Date : 2013-11-27 DOI: 10.1002/bltj.21634

Hans Sahm, Matthias Sauppe, Erik Markert, Thomas Horn, Ulrich Heinkel, Klaus-Holger Otto

{"title":"Optimized ASIC/FPGA Design Flow for Energy Efficient Network Nodes","authors":"Hans Sahm, Matthias Sauppe, Erik Markert, Thomas Horn, Ulrich Heinkel, Klaus-Holger Otto","doi":"10.1002/bltj.21634","DOIUrl":"10.1002/bltj.21634","url":null,"abstract":"This paper describes the ENERSAVE research project, which is funded by the German ministry of research. The project target is a 30 percent power reduction for network nodes via introduction of a holistic, energy-aware design flow for application-specific integrated circuit (ASIC) and field programmable gate array (FPGA) design. Using today's state of the art design methods, advanced calculation of system power budgets is a major challenge since current methods do not offer sufficient means for supporting energy awareness and efficiency throughout the complete component design process. The ENERSAVE project is developing a methodology to support power awareness and provides the ability to target power constraints from the system level all the way down to the silicon. It introduces formal tools for power optimizations and demonstrates, on an optical transmission system card, how using this new design methodology enables the envisioned power target to be achieved. The paper presents methodology improvement results to date and offers a preview of expected demonstrable results by project completion in 2014. © 2013 Alcatel-Lucent.","PeriodicalId":55592,"journal":{"name":"Bell Labs Technical Journal","volume":"18 3","pages":"195-209"},"PeriodicalIF":0.0,"publicationDate":"2013-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/bltj.21634","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51438587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Elastic Optical Networks: The Global Evolution to Software Configurable Optical Networks 弹性光网络:向软件可配置光网络的整体演进

Bell Labs Technical Journal Pub Date : 2013-11-27 DOI: 10.1002/bltj.21631

Patricia Layec, Annalisa Morea, Francesco Vacondio, Olivier Rival, Jean-Christophe Antona

{"title":"Elastic Optical Networks: The Global Evolution to Software Configurable Optical Networks","authors":"Patricia Layec, Annalisa Morea, Francesco Vacondio, Olivier Rival, Jean-Christophe Antona","doi":"10.1002/bltj.21631","DOIUrl":"10.1002/bltj.21631","url":null,"abstract":"Worldwide operator deployment of high-speed 100G coherent optical networks is currently underway. To ensure a competitive solution offering significant performance improvements to cope with the ever-increasing traffic demand, a novel network concept has been proposed for improved resource utilization based on “elasticity”; specifically, the ability to make a number of previously fixed transmission parameters tunable, for example optical data rate or channel spacing. The benefits are numerous, including increased network capacity, lower cost per bit, and improved energy efficiency and scalability. In this paper, we review the work carried out within the Cooperation for a Sustained European Leadership in Telecommunications (CELTIC) Elastic-Optical NETwork (EO-Net) project towards advancing the state of software-configurable optical networking. We identify the key building blocks for enabling elastic optical networks to provide desired performance improvements over static optical networks. We examine the design of elastic transponders capable of data rate adaptation, interfaces between client packet devices and transponders supporting flexible traffic aggregation, and associated algorithms for traffic grooming and routing. We also perform network cost/energy analyses. Finally, we review the experimental demonstration of such elastic functionalities. © 2013 Alcatel-Lucent.","PeriodicalId":55592,"journal":{"name":"Bell Labs Technical Journal","volume":"18 3","pages":"133-151"},"PeriodicalIF":0.0,"publicationDate":"2013-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/bltj.21631","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51438835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 53

Semi-Empirical Description and Projections of Internet Traffic Trends Using a Hyperbolic Compound Annual Growth Rate 使用双曲线复合年增长率的互联网流量趋势的半经验描述和预测

Bell Labs Technical Journal Pub Date : 2013-11-27 DOI: 10.1002/bltj.21625

Steven K. Korotky

{"title":"Semi-Empirical Description and Projections of Internet Traffic Trends Using a Hyperbolic Compound Annual Growth Rate","authors":"Steven K. Korotky","doi":"10.1002/bltj.21625","DOIUrl":"10.1002/bltj.21625","url":null,"abstract":"For the purpose of projecting future macroscopic Internet traffic, we have analyzed historical U.S. and global Internet traffic volumes previously reported for 1990 to the present. The empirical long-term traffic trends are characterized by growth rates that have generally been decreasing over time, and so are not adequately described as exponential growth. Based on regression analyses, we also conclude that the decreasing growth rates are not well represented by the saturation characteristic of the logistic function alone. However, we find the observed traffic data are well reproduced over ranges spanning more than six orders of magnitude of traffic volume and a period of 17 years by a hyperbolic dependence of the compound annual growth rate on time. Using a semi-empirical hyperbolic function to model the growth rate we have carried out linearized regression analyses of a combination of historical and near-term traffic forecasts to project macroscopic Internet traffic to 2020 for several geo-economic regions, market segments, and application categories. In contrast to the decade of 2000–2010 when global Internet traffic grew more than 100-fold, the projections indicate that over the decade 2010–2020 the global wireline Internet traffic will grow approximately 16 times larger to approach 250 exabytes per month and the global mobile Internet traffic will grow approximately 150 times larger to approach 40 exabytes per month. The projections also indicate that over the decade the compound annual growth rate of global wireline Internet traffic will decrease from approximately 45 percent to 25 percent per year and the growth rate of global mobility Internet traffic will decrease from approximately 170 percent to 30 percent per year. By considering both the historical trends and near-term forecasts, our analyses and projections call attention to those traffic categories for which estimates of future Internet traffic may carry lesser or greater uncertainty. © 2013 Alcatel-Lucent.","PeriodicalId":55592,"journal":{"name":"Bell Labs Technical Journal","volume":"18 3","pages":"5-21"},"PeriodicalIF":0.0,"publicationDate":"2013-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/bltj.21625","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51438060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 36

Current and Future Flexible Wavelength Routing Cross-Connects 当前和未来的柔性波长路由交叉连接

Bell Labs Technical Journal Pub Date : 2013-11-27 DOI: 10.1002/bltj.21626

Thierry Zami

{"title":"Current and Future Flexible Wavelength Routing Cross-Connects","authors":"Thierry Zami","doi":"10.1002/bltj.21626","DOIUrl":"10.1002/bltj.21626","url":null,"abstract":"Existing and evolving telecommunication services rely upon transport infrastructure for their carriage, including that provided by wavelength division multiplexing (WDM) based networking. In order to maximize reach in the photonic domain, thus limiting the total number of costly and power-greedy optoelectronic regenerators required for reliable transport, optimization of wavelength routing cross-connect (WRXC) properties is essential. There are several relevant WRXC properties. These include low physical impact on optical channels, enabling usage of advanced modulation formats with high spectral efficiency, support for flexible wavelength allocation as well as multi-directional, colorless, and contentionless insertion/extraction of traffic, resilience against failures, and automatic lightpath setup. Other factors supporting WRXC deployment involve fair initial cost, compactness and modularity, and scalability to high connectivity and to significant add/drop capacity. Some of these features are a “must have” whereas others are a “nice to have.” This paper reviews the primary trends affecting current and future WRXC evolution considering these functionalities as well as the corresponding tradeoffs. ©2013 Alcatel-Lucent.","PeriodicalId":55592,"journal":{"name":"Bell Labs Technical Journal","volume":"18 3","pages":"23-38"},"PeriodicalIF":0.0,"publicationDate":"2013-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/bltj.21626","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51438111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Protocol Enhancements for “Greening” Optical Networks “绿化”光网络的协议增强

Bell Labs Technical Journal Pub Date : 2013-11-27 DOI: 10.1002/bltj.21635

Annalisa Morea, Jordi Perelló, Salvatore Spadaro, Dominique Verchère, Martin Vigoureux

引用次数: 12

A New Perspective on Burst-Switched Optical Networks 突发交换光网络的新视角

Bell Labs Technical Journal Pub Date : 2013-11-27 DOI: 10.1002/bltj.21630

Giorgio Cazzaniga, Christian Hermsmeyer, Iraj Saniee, Indra Widjaja

引用次数: 8

Recent Alcatel-Lucent Patents 最近的阿尔卡特朗讯专利

Bell Labs Technical Journal Pub Date : 2013-11-27 DOI: 10.1002/bltj.21640

引用次数: 0