共查询到20条相似文献,搜索用时 62 毫秒
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光突发交换与交换粒度介于光电路交换(即波长交换)和光分组交换之间的一种光交换模式,因为它克服了光电路交换和光分组交换的缺点,具有很大的技术优势,很有可能成为下一代互联网骨干网络的核心技术,真正实现光子互联网。本介绍光突发交换技术的基本原理,讨论了光突发交换的协议,突发封装和在IP骨干网中的应用等问题,并指出在这项技术得到应用之前需要解决的诸多课题。 相似文献
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Paiva M. H. M. Caporossi G. Ribeiro M. R. N. Segatto M. E. V. 《Photonic Network Communications》2020,40(3):149-159
Photonic Network Communications - Physical topologies are evolving from elementary survivable rings into complex mesh networks. Nevertheless, no topology model is known to provide an economic,... 相似文献
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引入广义光突发汇聚(GOBA)概念对传统光突发交换(OBS)进行扩展,形成新的广义OBS(GOBS)网络。针对GOBS的多业务承载目标,提出了一种支持多业务承载的GOBA机制,采用将业务最小时延要求作为汇聚时间的汇聚方式,将多种用户数据业务汇聚到不同粒度的广义数据突发(GDB)中。仿真结果表明,在GOBS环境下,与MSMAP(max burst-size max assembly period)机制相比,GOBA能够在满足较高数据成功接收率的基础上显著地减小约10%的总体数据超时率,同时降低约15%的突发碰撞率,并提高约20%信道利用率。 相似文献
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Existing performance studies on optical burst switched (OBS) networks have been focusing on channel blocking, i.e., when the required wavelength is not available on a link along a burst’s route. However, we identify another type of
blocking as the receiver blocking, i.e., when the receiver at a burst’s destination node is occupied by another burst. Receiver blocking may account for the
much larger part of total burst blocking. Receiver blocking has been largely ignored in existing research. In this paper we propose using multiple receivers or fiber delay lines (FDL)
in front of the receivers in order to reduce the receiver blocking probability. Extensive simulation results on bi-directional
OBS rings are presented to illustrate the problem and the performance of our proposed approaches. The results indicate that
receiver blocking can be almost eliminated by using as little as three receivers and can be reduced by using a FDL of small
length. To our knowledge, this is the first performance study that covers both channel and receiver blocking for OBS networks. 相似文献
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一种基于标准CMOS工艺的单片光互连 总被引:2,自引:2,他引:0
探索了采用标准CMOS工艺实现单片光互连的可行性。采用特许(Chartered)半导体公司3.3V、0.35μm标准模拟CMOS工艺设计并制造了一种单片光互连系统,并用两种结构研究了衬底噪声耦合对互连性能的影响。测试结果表明:该光互连系统可工作于几×103Hz,验证了基于标准CMOS工艺的单片光互连系统是可行的。 相似文献
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Sung Hwan Hwang Mu Hee Cho Sae-Kyoung Kang Hyo-Hoon Park Han Seo Cho Sang-Hoon Kim Kyoung-Up Shin Sang-Won Ha 《Photonics Technology Letters, IEEE》2006,18(5):652-654
We propose a passively assembled chip-to-chip optical interconnection system using fiber-optic technology. To demonstrate the system, three components were prepared: a fiber-embedded optical printed-circuit board (OPCB), optical transmitter/receiver modules, and 90/spl deg/-bent fiber connectors. All components were assembled using precise guide pins and holes so that complete passive alignment was achieved in the OPCB. An optical link of 5-Gb/s/ch signals with a total link loss of -1.5 dB has been successfully demonstrated from the assembled system. 相似文献
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光突发交换网络中突发组装机制的性能分析 总被引:1,自引:0,他引:1
研究了光突发交换网络中关键技术之一的突发组装机制,介绍了基于时间门限组装、基于长度门限组装和混合门限组装3种典型的突发组装机制,并对比分析了三种组装机制对网络汇聚性能(突发大小、组装时延)的影响以及自相似性能的改善情况,得出混合门限组装机制能获得更好的网络汇聚性能和自相似性能的改善的结论。 相似文献
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文章首先讨论了与光突发交换(OBS)相关的一些问题。接着讨论了OBS如何应用于下一代光互联网中,特别是偏置时间和延迟预留协议有助于避免使用光缓存,能在波分复用(WDM)层支持服务质量(QoS)服务。 相似文献
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光突发交换(OBS)是近年来出现的一种新型光交换技术.OBS结合了光电路交换和光分组交换的优点,比电路交换更加灵活,而与光分组交换相比又提供了光层的统计复用能力且易于实现.OBS能提供高吞吐量、高带宽利用率和低时延,使其成为下一代城域网的有力竞争者.文章采用M/G/1排队模型,在限定条件下对不同优先级的突发包在OBS环网中的传输延迟进行了分析,最后给出了突发包在OBS环网中所经历的时延. 相似文献