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Traffic shaping and scheduling for OBS-based IP/WDM backbones 基于obs的IP/WDM主干网流量整形与调度
OptiComm: Optical Networking and Communications Conference Pub Date : 2003-10-01 DOI: 10.1117/12.533541
Mahmoud Elhaddad, R. Melhem, T. Znati, D. Basak
{"title":"Traffic shaping and scheduling for OBS-based IP/WDM backbones","authors":"Mahmoud Elhaddad, R. Melhem, T. Znati, D. Basak","doi":"10.1117/12.533541","DOIUrl":"https://doi.org/10.1117/12.533541","url":null,"abstract":"We introduce Proactive Reservation-based Switching (PRS) -- a switching architecture for IP/WDM networks based on Labeled Optical Burst Switching. PRS achieves packet delay and loss performance comparable to that of packet-switched networks, without requiring large buffering capacity, or burst scheduling across a large number of wavelengths at the core routers. PRS combines proactive channel reservation with periodic shaping of ingress-egress traffic aggregates to hide the offset latency and approximate the utilization/buffering characteristics of discrete-time queues with periodic arrival streams. A channel scheduling algorithm imposes constraints on burst departure times to ensure efficient utilization of wavelength channels and to maintain the distance between consecutive bursts through the network. Results obtained from simulation using TCP traffic over carefully designed topologies indicate that PRS consistently achieves channel utilization above 90% with modest buffering requirements.","PeriodicalId":187370,"journal":{"name":"OptiComm: Optical Networking and Communications Conference","volume":"25 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132287443","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: 8
Linear formulation for segment shared protection 线段共享保护的线性公式
OptiComm: Optical Networking and Communications Conference Pub Date : 2003-10-01 DOI: 10.1117/12.533176
János Tapolcai, P. Ho
{"title":"Linear formulation for segment shared protection","authors":"János Tapolcai, P. Ho","doi":"10.1117/12.533176","DOIUrl":"https://doi.org/10.1117/12.533176","url":null,"abstract":"This paper proposes a novel linear formulation for the problem of segment shared protection, where the switching/merging nodes and the least-cost link-disjoint working and protection segments corresponding to each switching/merging node-pair are jointly determined for a connection request. A novel approach of arc-reversal graph transformation is introduced. We verify the ILP and compare it with three reported approaches for solving the segment shared protection problem, namely CDR, PROMISE, and OPDA, by launching dynamic connection requests on two network topologies. From the experiment results, we observe that the ILP can always yield better results in terms of the total cost taken by the working and protection segments. We conclude that the proposed ILP formulation is a step ahead of the most state-of-the-art techniques in solving the shared protection problem, which provides a means of evaluating any other segment shared protection algorithms.","PeriodicalId":187370,"journal":{"name":"OptiComm: Optical Networking and Communications Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126415648","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
MICRON: A framework for connection establishment in optical networks MICRON:光网络中连接建立的框架
OptiComm: Optical Networking and Communications Conference Pub Date : 2003-10-01 DOI: 10.1117/12.533307
R. Srinivasan
{"title":"MICRON: A framework for connection establishment in optical networks","authors":"R. Srinivasan","doi":"10.1117/12.533307","DOIUrl":"https://doi.org/10.1117/12.533307","url":null,"abstract":"Traffic grooming in optical networks has gained significance due to the prevailing sub-wavelength requirement of end users. Optical networks get upgraded to the latest technology slowly with time, with only a subset of nodes being upgraded to the latest technology. The optical networks are thus comprised of nodes employing heterogeneous switching architectures. In this paper, we develop a framework, called Methodology for Information Collection and Routing in Optical Networks (MICRON), for connection establishment in WDM grooming networks with heterogeneous switching architectures. We illustrate with examples some of the information that could be collected from a link. The link information may be combined in a variety of ways to obtain different properties of a path. We complete the MICRON framework by providing a generic channel assignment procedure that may be adapted to implement different channel assignment schemes. The framework can be easily implemented with simple traffic engineering extensions to the already existing routing protocols in the wide-area networks.","PeriodicalId":187370,"journal":{"name":"OptiComm: Optical Networking and Communications Conference","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127506016","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: 7
Resource reservation in optical burst switching: architectures and realizations for reservation modules 光突发交换中的资源预留:预留模块的架构与实现
OptiComm: Optical Networking and Communications Conference Pub Date : 2003-10-01 DOI: 10.1117/12.533822
S. Junghans, C. Gauger
{"title":"Resource reservation in optical burst switching: architectures and realizations for reservation modules","authors":"S. Junghans, C. Gauger","doi":"10.1117/12.533822","DOIUrl":"https://doi.org/10.1117/12.533822","url":null,"abstract":"This paper presents an architecture and a realization of a burst reservation module for optical burst switching using the just-enough-time (JET) reservation scheme. JET is a reserve-a-fixed-duration reservation algorithm, i.e., wavelength channels are allocated exactly for the burst transmission time. As the exact start and end times of all bursts have to be recorded and processed for JET burst reservation, several publications assumed its realization to be prohibitively complex. This paper proposes an architecture for a hardware-based reservation module for JET. This architecture has been described in VHDL and synthesized on an FPGA representative for today's programmable logic technology. The proposed solution is evaluated under dynamic traffic based on timing and resource utilization results taken from the FPGA realization. The results of the performance evaluation prove that with this reservation module JET can even be realized for burst durations in the microsecond range.","PeriodicalId":187370,"journal":{"name":"OptiComm: Optical Networking and Communications Conference","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128882948","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
System architecture for proactively adapting lasercom systems 主动适应激光通信系统的系统架构
OptiComm: Optical Networking and Communications Conference Pub Date : 2003-10-01 DOI: 10.1117/12.533336
V. Kukshya, H. Izadpanah, G. Tangonan
{"title":"System architecture for proactively adapting lasercom systems","authors":"V. Kukshya, H. Izadpanah, G. Tangonan","doi":"10.1117/12.533336","DOIUrl":"https://doi.org/10.1117/12.533336","url":null,"abstract":"High susceptibility to adverse atmospheric conditions can severely limit the use of free-space optical systems for critical applications. This paper proposes a new architecture for lasercom systems for proactive adaptability during adverse atmospheric conditions. The hardware and software components of the proposed architecture are described in detail. We also present an in-field lasercom test-bed setup, the wireless channel propagation measurements recorded using the test-bed, and the results to validate the recommended design.","PeriodicalId":187370,"journal":{"name":"OptiComm: Optical Networking and Communications Conference","volume":"5285 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130873571","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
Backup resource pooling in (M:N)n fault recovery schemes in GMPLS optical networks GMPLS光网络中(M:N) N种故障恢复方案的备份资源池
OptiComm: Optical Networking and Communications Conference Pub Date : 2003-10-01 DOI: 10.1117/12.533330
K. Sriram, D. Griffith, Sukyoung Lee, N. Golmie
{"title":"Backup resource pooling in (M:N)n fault recovery schemes in GMPLS optical networks","authors":"K. Sriram, D. Griffith, Sukyoung Lee, N. Golmie","doi":"10.1117/12.533330","DOIUrl":"https://doi.org/10.1117/12.533330","url":null,"abstract":"In resilient optical networks, there is a tradeoff between the amount of resources allocated for protection versus the probability that a failed working path can not be recovered, known as protection blocking probability. Often the network topology permits multiple protected groups of working paths (WPs) to share protection bandwidth and other network resources. The Common Control and Measurement Plane (CCAMP) working group in the IETF has defined an (M:N)n shared recovery scheme, in which defined n WP groups each consisting of N WPs and M backup paths (BPs) share some or all of the BP resources. In this paper, we present an analytical model that predicts protection blocking probability as a function of BP resource sharing for this shared recovery scheme. We also propose an algorithm that efficiently manages BP resources while doing protection assignments. We provide numerical results that highlight the benefits and tradeoffs involved. Our analytical model can assist in providing engineering guidelines to service providers so that they can effectively allocate resources and manage protection and restoration in their networks.","PeriodicalId":187370,"journal":{"name":"OptiComm: Optical Networking and Communications Conference","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115096205","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: 13
Performance evaluation and enhancement of OCDMA systems with broadband light sources 宽带光源下的OCDMA系统性能评价与改进
OptiComm: Optical Networking and Communications Conference Pub Date : 2003-10-01 DOI: 10.1117/12.533824
H. Lundqvist, G. Karlsson
{"title":"Performance evaluation and enhancement of OCDMA systems with broadband light sources","authors":"H. Lundqvist, G. Karlsson","doi":"10.1117/12.533824","DOIUrl":"https://doi.org/10.1117/12.533824","url":null,"abstract":"In this paper the performance of low complexity optical CDMA systems is evaluated. Beat noise is the main performance limitation for an implementation using an incoherent receiver. Therefore, a channel model with both interference and beat noise is presented. From the channel model a maximum likelihood soft decoding method is derived. The system considered is a passive optical network with tree topology where the headend can use information about the number of active users to improve the receiver performance. In order to simulate systems with forward error correction (FEC) and soft decoding an efficient simulation method is used. The simulations show that the performance is highly overestimated when the beat noise is neglected. The results also show that it is better to use FEC to expand the bandwidth compared with only using CDMA spreading, in particular since the efficiency of FEC can be further increased with soft decoding.","PeriodicalId":187370,"journal":{"name":"OptiComm: Optical Networking and Communications Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121066541","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
Packet-selective photonic add/drop mulitplexer at 40Gb/s using optical-code label 使用光码标签的40Gb/s分组选择性光子加/丢多路复用器
OptiComm: Optical Networking and Communications Conference Pub Date : 2003-10-01 DOI: 10.1117/12.533325
N. Kataoka, K. Kitayama, N. Wada, F. Kubota
{"title":"Packet-selective photonic add/drop mulitplexer at 40Gb/s using optical-code label","authors":"N. Kataoka, K. Kitayama, N. Wada, F. Kubota","doi":"10.1117/12.533325","DOIUrl":"https://doi.org/10.1117/12.533325","url":null,"abstract":"Packet-by-packet selective photonic add/drop multiplexer, of the finest data granularity, is experimentally demonstrated at 40Gbit/s. Optical code-label, attached to the packet, enables to determine in optical domain either to drop, cut through, or add packets.","PeriodicalId":187370,"journal":{"name":"OptiComm: Optical Networking and Communications Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126171665","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
OTN network design and optimization under the optical amplifier noise constraint 光放大器噪声约束下OTN网络的设计与优化
OptiComm: Optical Networking and Communications Conference Pub Date : 2003-10-01 DOI: 10.1117/12.533812
G. Maier, Roberto Gibellini, A. Pattavina, M. Martinelli
{"title":"OTN network design and optimization under the optical amplifier noise constraint","authors":"G. Maier, Roberto Gibellini, A. Pattavina, M. Martinelli","doi":"10.1117/12.533812","DOIUrl":"https://doi.org/10.1117/12.533812","url":null,"abstract":"A design method is proposed that minimizes the deployment cost of a network when only a limited number of OXCs is capable of 3-R regeneration. Optimization, based on a given static-traffic matrix, is carried out by routing lightpaths with constrained signal degradation. Constraint-based routing and wavelength assignment is performed considering accumulation of noise due to amplified spontaneous emission of optical amplifiers as the major cause of signal degradation. A general multilayer design and optimization procedure is developed and applied to some case-study networks. The effects of the variation of design parameters such as amplification-span length, wavelength conversion capability distribution and optical protection capability is investigated.","PeriodicalId":187370,"journal":{"name":"OptiComm: Optical Networking and Communications Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122595379","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
Sparse-partial wavelength conversion in wavelength-routed all-optical networks 波长路由全光网络中的稀疏部分波长转换
OptiComm: Optical Networking and Communications Conference Pub Date : 2003-10-01 DOI: 10.1117/12.533332
Xiaowen Chu, B. Li, Zhensheng Zhang
{"title":"Sparse-partial wavelength conversion in wavelength-routed all-optical networks","authors":"Xiaowen Chu, B. Li, Zhensheng Zhang","doi":"10.1117/12.533332","DOIUrl":"https://doi.org/10.1117/12.533332","url":null,"abstract":"Wavelength conversion has been shown as one of the key techniques that can improve the blocking performance in a wavelength-routed all-optical network. Given that wavelength converters nowadays are still very expensive, how to make effective use of the limited number of wavelength converters becomes an important issue. In this paper, we propose a novel sparse-partial wavelength conversion (SPWC) architecture with the inherent flexibility that can facilitate network carriers to migrate the optical backbone to support wavelength conversion. We demonstrate that this architecture can significantly save the number of wavelength converters while still achieving excellent blocking performance. We further investigate the wavelength converter placement problem. Simulation results indicate that, with appropriate wavelength assignment and wavelength converter placement scheme, the performance of the wavelength-routed all-optical network with only 1-5% of wavelength conversion capability is very close to that of the networks with full-complete wavelength conversion capability.","PeriodicalId":187370,"journal":{"name":"OptiComm: Optical Networking and Communications Conference","volume":"5285 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129788951","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: 8
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