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Robust routing in ISP networks considering YouTube traffic demand fluctuations 考虑YouTube流量需求波动的ISP网络鲁棒路由
2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks) Pub Date : 2014-11-20 DOI: 10.1109/NETWKS.2014.6959201
Gerd Windisch, T. M. Knoll, T. Bauschert
{"title":"Robust routing in ISP networks considering YouTube traffic demand fluctuations","authors":"Gerd Windisch, T. M. Knoll, T. Bauschert","doi":"10.1109/NETWKS.2014.6959201","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959201","url":null,"abstract":"Content Delivery Networks (CDN) are responsible for a large traffic share in today's ISP networks. CDN operators deploy load balancing between their data centers which may cause large traffic fluctuations within an ISP network. These traffic shifts in turn can lead to severe congestion situations if the traffic routing is not able to distribute the load properly. In this paper we first present a traffic demand model that includes the representation of YouTube traffic fluctuations caused by the dynamic data center selection mechanism applied in the YouTube CDN. This model is derived from measurements of the YouTube data center selection behavior and from traffic measurements in a large German ISP network. We then address the problem of determining a robust routing scheme using our traffic demand model. The target of the routing optimization is to minimize the maximum link utilization in an ISP network with given link capacities. Finally we apply our robust routing approach on different network topology and traffic demand scenarios and discuss the results.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116313905","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
On the trade-offs between ODU and OCh preplanned shared restoration in transport networks 传输网络中ODU和OCh预规划共享恢复的权衡
2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks) Pub Date : 2014-11-20 DOI: 10.1109/NETWKS.2014.6959252
J. Pedro, B. Gangopadhyay
{"title":"On the trade-offs between ODU and OCh preplanned shared restoration in transport networks","authors":"J. Pedro, B. Gangopadhyay","doi":"10.1109/NETWKS.2014.6959252","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959252","url":null,"abstract":"Failure survivability mechanisms are indispensable in transport networks but their support can demand a significant overprovisioning of network resources. Shared restoration is seen as a mechanism that can help in reducing the amount of extra resources needed, while still providing a reasonable capability to withstand failures. By having all restoration resources defined in advanced, Preplanned Shared Restoration (PSR) can reduce the down time between a failure occurrence and the conclusion of all steps of the restoration process. Noteworthy, PSR schemes can be employed either with fine granularity via electrical cross connects or with coarse granularity via optical cross connects or even using both, depending on the target Service Level Agreement (SLA). This paper overviews both flavors of PSR, looking at the requirements they impose to the transport network, comparing them qualitatively, and presenting a case study to compare their overprovisioning requirements, thereby hinting at which network and traffic scenarios are best fitted to using one or the other.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132790676","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: 6
Experimental investigation on the role of optical amplification for TV broadcasting optical networks 光放大在电视广播光网络中作用的实验研究
2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks) Pub Date : 2014-11-20 DOI: 10.1109/NETWKS.2014.6958529
G. Tripaldi, S. Betti, F. Matera, S. Di Bartolo, A. Pizzoleo
{"title":"Experimental investigation on the role of optical amplification for TV broadcasting optical networks","authors":"G. Tripaldi, S. Betti, F. Matera, S. Di Bartolo, A. Pizzoleo","doi":"10.1109/NETWKS.2014.6958529","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6958529","url":null,"abstract":"Experimental investigations are presented concerning on the use of optical amplifiers in Fiber-to-the-Building/Home (FTTB/H) access networks sharing TV channels for broadcasting DVB-T signals. Both Erbium Doped Fibre Amplifier (EDFA) and Semiconductor Optical Amplifiers (SOA) have been considered and the experimental results show that SOA can induce severe constraints that have to be suitably faced in the case of its application for TV broadcasting via optical fibre links.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129333887","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
Design cost and spectrum efficiency comparison of fixed-grid and flex-grid optical networks with grooming 带疏导的固定网格和柔性网格光网络的设计成本和频谱效率比较
2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks) Pub Date : 2014-11-20 DOI: 10.1109/NETWKS.2014.6959208
Amaro F. de Sousa, Carlos Borges Lopes, P. Monteiro
{"title":"Design cost and spectrum efficiency comparison of fixed-grid and flex-grid optical networks with grooming","authors":"Amaro F. de Sousa, Carlos Borges Lopes, P. Monteiro","doi":"10.1109/NETWKS.2014.6959208","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959208","url":null,"abstract":"This paper deals with the design of optical networks aiming to minimize the design cost and the spectrum usage. We present an optimization method that is able to find the optimal solutions of relevant sized instances. We apply the method to realistic case studies. With the obtained solutions, we make a cost and spectrum efficiency comparison analysis between fixed-grid and flex-grid optical networks. The results show that flex-grid gains are significant over the fixed-grid alternatives only after the introduction of 400 Gbps line rates and marginal gains are obtained without this line rate.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133852773","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: 5
Flexible optical transmission systems for future networking 面向未来网络的灵活光传输系统
2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks) Pub Date : 2014-11-20 DOI: 10.1109/NETWKS.2014.6958526
J. Reis, M. Garrich, D. M. Pataca, J. Diniz, V. Rozental, L. Carvalho, E. Magalhães, U. Moura, N. G. González, Juliano R. F. Oliveira, Julio Oliveira
{"title":"Flexible optical transmission systems for future networking","authors":"J. Reis, M. Garrich, D. M. Pataca, J. Diniz, V. Rozental, L. Carvalho, E. Magalhães, U. Moura, N. G. González, Juliano R. F. Oliveira, Julio Oliveira","doi":"10.1109/NETWKS.2014.6958526","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6958526","url":null,"abstract":"This paper describes the path for future implementations of flexible optical transmission. The baseline discussion is divided into the transponder technical aspects and the network subsystem elements. Regarding flexible transponder, three degrees of freedom such as modulation format, symbol rate and number of channels are exploited in order to obtain rate adaptive transmitters and receivers. In addition, digital signal processing is discussed to relax the hardware resources and to enhance transmission performance. As far as the optical networking is concerned, some functionalities present in node subsystems as optical amplifiers and filters in reconfigurable optical add/drop multiplexers (ROADM) / wavelength selective switches (WSS) are optimized and implemented to support the requirements needed in software defined networks (SDN).","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123210048","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: 11
Enriching the poor man's traffic engineering: Virtual link provisioning for optimal OSPF TE 丰富穷人流量工程:虚拟链路发放，实现最优OSPF TE
2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks) Pub Date : 2014-11-20 DOI: 10.1109/NETWKS.2014.6959240
K. Németh, Attila Korosit, G. Rétvári
{"title":"Enriching the poor man's traffic engineering: Virtual link provisioning for optimal OSPF TE","authors":"K. Németh, Attila Korosit, G. Rétvári","doi":"10.1109/NETWKS.2014.6959240","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959240","url":null,"abstract":"In this paper we introduce a framework that substantially enhances OSPF Traffic Engineering by augmenting its ability to handle load balancing situations. Our solution uses only unmodified OSPF ECMP and does not require the installation of any new hardware or software elements by the network operator. The main problem with ECMP is that it can only divide the traffic in equal proportion among the least-cost paths. This is overcame in our Virtual Link Provisioning Framework by a simple technique: setting up virtual links alongside the existing ones, thereby tricking OSPF into non-even load-sharing. In this work we facilitate each network node to split the traffic - formerly it was only possible at the sources. This way we put considerably less requirements on the network infrastructure, yet achieve significantly better overall performance.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122846304","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: 1
Demand analysis of Internet access services in Japan: Fixed-line broadband services become needless? 日本互联网接入服务需求分析:固网宽带服务变得不必要?
2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks) Pub Date : 2014-11-20 DOI: 10.1109/NETWKS.2014.6959202
A. Inoue, Yohei Tsuchiya, Mizuki Saito, M. Iwashita
{"title":"Demand analysis of Internet access services in Japan: Fixed-line broadband services become needless?","authors":"A. Inoue, Yohei Tsuchiya, Mizuki Saito, M. Iwashita","doi":"10.1109/NETWKS.2014.6959202","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959202","url":null,"abstract":"Due to the improvement of wireless technologies such as LTE and WiMax services, various changes occur around the Internet market. High-speed wireless services become competitors of fixed-line broadband-services. We present the current situation of Internet-access-service market in Japan. We analyzed the change of the preference for the Internet access services from the following two customer segments: fixed-line broadband-service customers and wireless-service customers. This paper presents the results based on the original survey data collected from customers of major three mobile-carriers: docomo, au and SoftBank in Japan. Finally, we conclude and discuss the future demand of the Internet access services.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128617577","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: 2
Challenges in the design and deployment for packet optical converged core network 分组光融合核心网设计与部署中的挑战
2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks) Pub Date : 2014-11-20 DOI: 10.1109/NETWKS.2014.6958540
Hosong Lee, Kwang-Koog Lee, Sangwan Na, Youngwuk Lee
{"title":"Challenges in the design and deployment for packet optical converged core network","authors":"Hosong Lee, Kwang-Koog Lee, Sangwan Na, Youngwuk Lee","doi":"10.1109/NETWKS.2014.6958540","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6958540","url":null,"abstract":"Most of the network operators are looking into how to upgrade their existing network infrastructures in a cost-effective manner. As packet optical convergence has been a major trend in optical networking, network operators are interested in packet optical convergence technologies. POTN (Packet Optical Transport Network) is a recently emerging technology that integrates optical, circuit and packet layer into a single converged device. It enhances bandwidth efficiency by optimizing multiple layer network and reduces operational costs compared with separated network architecture. In order to verify the feasibility of POTN, we designed core network architecture based on POTN for building a unified core transport network. We carried out intensive laboratory tests and a nationwide field trial. This paper presents our approach for deploying packet optical converged core network. And the paper introduces our trial experiences and shows key considerations for POTN deployment from a network operator perspective.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126386013","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
Network virtualization: Paving the way to carrier clouds 网络虚拟化:为运营商云铺平道路
2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks) Pub Date : 2014-11-20 DOI: 10.1109/NETWKS.2014.6959226
S. Aleksic, I. Miladinovic
{"title":"Network virtualization: Paving the way to carrier clouds","authors":"S. Aleksic, I. Miladinovic","doi":"10.1109/NETWKS.2014.6959226","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959226","url":null,"abstract":"Network function virtualization (NFV) and multilayer software-defined networking (SDN) will enable an automated control, management and orchestration of network resources across several network layers and areas. They may also open new possibilities for communication service providers (CSP) to expand their business and offer cloud services with carrier-level service-level agreements (SLA). In this paper, we briefly review technological, legal and business aspects of NFV and carrier clouds.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125298351","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: 11
Modelling of network nodes with threshold mechanisms and multi-service sources 具有阈值机制和多服务源的网络节点建模
2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks) Pub Date : 2014-11-20 DOI: 10.1109/NETWKS.2014.6959224
M. Głąbowski, M. Sobieraj
{"title":"Modelling of network nodes with threshold mechanisms and multi-service sources","authors":"M. Głąbowski, M. Sobieraj","doi":"10.1109/NETWKS.2014.6959224","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959224","url":null,"abstract":"This paper presents an analytical model of multiservice systems with multi-service traffic sources that generate call streams according to the Poisson distribution, binomial distribution and negative binomial distribution. A particular attention is given to modelling of the influence of threshold mechanisms that control access of calls of particular traffic classes to resources of network nodes. Additionally, the paper proposes a method for a determination of traffic characteristics of switching networks with threshold mechanisms and multiservice traffic sources that are a key element of modern network nodes. The method developed by the authors is based on the concept of effective availability. In order to evaluate the accuracy of the proposed method appropriate, original computational and simulation programs have been used. The results obtained by the analytical model are compared with the results of the simulation experiments. The study confirms high accuracy of the proposed methods for a determination of the blocking probability in switching networks with multi-service traffic sources and threshold mechanisms.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"248 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114417846","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
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