Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium最新文献_第3页

Broadband demand and the role of new technologies 宽带需求和新技术的作用

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium Pub Date : 2008-09-01 DOI: 10.1109/NETWKS.2008.4763670

K. Stordahl

{"title":"Broadband demand and the role of new technologies","authors":"K. Stordahl","doi":"10.1109/NETWKS.2008.4763670","DOIUrl":"https://doi.org/10.1109/NETWKS.2008.4763670","url":null,"abstract":"Huge investments have been used to roll out broadband networks during the recent years. Long-term broadband demand forecasts have been and are crucial for investments decisions, rollouts and dimensioning of the networks. The main broadband access technologies have been DSL and Cable modem (Hybrid Fiber Coax). Also other technologies like fiber (FTTx) and fixed radio access are entering the market. Especially in Japan, Hong Kong and Korea, the growth of FTTx has been significant during the last years. However, the fiber access evolution in Western Europe has been quite modest. To cover the residual broadband market, technologies like WiMAX and mobile broadband are needed. The forecasting models are based on four parameters Logistic models and substitution effects between demands for different broadband technologies. For mobile broadband limited demand data, so far, are available. In addition specific attention is put on FTTx which is the long-term ultimate broadband solution. The long-term FTTx forecasts for Western Europe are dependent of a set of assumptions like time delay, regulatory aspects, degree of densely populated areas etc. The access forecasts for Western Europe show that the dominating technology, DSL, soon start to loose market share.","PeriodicalId":442274,"journal":{"name":"Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124459294","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: 9

NETWORKS 2010 - 14th International Telecommunications Network Strategy and Planning Symposium [Welcome message] 网络2010 -第十四届国际电讯网络策略及规划研讨会[欢迎辞]

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium Pub Date : 2008-09-01 DOI: 10.1109/NETWKS.2008.6231384

M. Pióro

引用次数: 0

Next generation networks techno-economic insights 下一代网络技术经济见解

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium Pub Date : 2008-09-01 DOI: 10.1109/NETWKS.2008.4763768

Santiago Andrés Azcoitia

引用次数: 2

Load control techniques in SIP signaling servers using multiple thresholds 使用多个阈值的SIP信令服务器中的负载控制技术

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium Pub Date : 2008-09-01 DOI: 10.1109/NETWKS.2008.4763678

S. Montagna, M. Pignolo

引用次数: 11

Cost and time trade-off of scheduling Grid tasks over grooming capable networks 调度网格任务与梳理能力网络的成本和时间权衡

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium Pub Date : 2008-09-01 DOI: 10.1109/NETWKS.2008.4763704

J. Gál, Norbert Szabo, Á. Ladányi, T. Cinkler

引用次数: 0

Network global strategy 网络全球战略

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium Pub Date : 2008-09-01 DOI: 10.1109/NETWKS.2008.6231382

Bernard Jarry-Lacombe

引用次数: 1

Coordinated network management and control system for reservation and real-time optical-path provisioning 协调网络管理和控制系统的预留和实时光路供应

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium Pub Date : 2008-09-01 DOI: 10.1109/NETWKS.2008.4763700

Kazuhisa Yamada, Y. Tsukishima, K. Matsuda, M. Jinno

引用次数: 0

Novel availability metrics for network topologies 新颖的网络拓扑可用性指标

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium Pub Date : 2008-09-01 DOI: 10.1109/NETWKS.2008.4763717

A. Zahemszky, János Tapolcai, A. Császár, A. Mihály

{"title":"Novel availability metrics for network topologies","authors":"A. Zahemszky, János Tapolcai, A. Császár, A. Mihály","doi":"10.1109/NETWKS.2008.4763717","DOIUrl":"https://doi.org/10.1109/NETWKS.2008.4763717","url":null,"abstract":"This paper presents two novel definitions for availability concerning communication networks. It is shown that currently used network availability metrics cannot fully describe the resiliency of a network. The aim of this paper is to provide metrics that enable network operators to compare different network topology designs assuming a given population distribution. A transport network is considered to be in down state when at least a certain percentage of all subscribers for at least 10 seconds have no connectivity, or have only poor performance. We also present another availability metric named Session Completion Ratio, which is a more user-centric performance indicator since any user with poor performance or no connectivity deteriorates the overall network performance. Simulation results are presented and different transport network topologies are compared based on their availability performance, followed by a case study, where the availability of a network is improved by allocating extra capacity on the links. The results proved that single link failure-tolerant capacity setting leads to high-availability. Finally a tool is presented that helps identifying those parts of the network that have the strongest influence on resiliency.","PeriodicalId":442274,"journal":{"name":"Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121245470","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: 0

Efficient and scalable design of Protected Working Capacity Envelope 高效和可扩展的保护工作容量包络设计

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium Pub Date : 2008-09-01 DOI: 10.1109/NETWKS.2008.4763725

S. Sebbah, B. Jaumard

{"title":"Efficient and scalable design of Protected Working Capacity Envelope","authors":"S. Sebbah, B. Jaumard","doi":"10.1109/NETWKS.2008.4763725","DOIUrl":"https://doi.org/10.1109/NETWKS.2008.4763725","url":null,"abstract":"The Protected Working Capacity Envelope (PWCE) concept was proposed by Grover (2004) in order to simplify network and operation management in survivable WDM networks. In this paper, we focus on PCWE with p-cycles and investigate a new design method, highly efficient and scalable, for designing survivable WDM networks. Traditional design methods proceed in two steps: A first step where a large (sometimes huge) number of cycles is enumerated followed by a second step where the selection of the most promising p-cycles is made with the help of combinatorial optimization tools. We develop a new (single step) method based on large scale optimization tools, i.e., column generation techniques, where the generation of cycles is dynamic and embedded within the optimization process. The key advantage of column generation (CG) techniques is that no a priori cycle enumeration step is required ahead of the optimization process: The generation of the relevant cycles, only one or few at a time, is embedded in the optimization process. We conducted intensive computational experiments. Not only do we considered several network instances with quite different topology characteristics, but we also compared our CG-based model and solution method with several existing models and methods from the literature. Results obtained in the experiments on five different network instances, show that the CG-based model and method outperform by far the results of all previous studies, both with respect to the scalability (much smaller computing times for large network instances) but also with respect to the quality of the solutions.","PeriodicalId":442274,"journal":{"name":"Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium","volume":"224 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116310109","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: 19

Network topology design considering detour traffic caused by link failure 考虑链路故障引起的绕行流量的网络拓扑设计

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium Pub Date : 2008-09-01 DOI: 10.1109/NETWKS.2008.4763724

N. Kamiyama, R. Kawahara, H. Yoshino

引用次数: 5