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OBS突发装配的缓存安全间隔机制

Scheme of buffer safety space for OBS burst assembly
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摘要 研究了光突发交换边缘路由器上的突发装配,着眼于使其更加通用、合理和高效.为此,引入了单位输入比特率的概念以提高通用性,然后提出和分析了装配中的缓存安全间隔机制及其作用.通过设置适当的缓存安全间隔值,不仅可以避免因缓存溢出引起的分组损失,而且所获得的固定最大发送时间也为突发的信道调度带来了便利.采用边缘路由器上的自相似流量模型,通过网络仿真,讨论了缓存安全间隔取值对突发生成、网络性能及缓存使用的影响,并获得了相关结论. The process of burst assembly at edge routers in optical burst switched networks （OB-SNs） is presented for setting up more universal, reasonable and high-powered networks. A conception of unit input bit rate is introduced to improve universality, and then a scheme of buffer safety space is proposed and discussed. By setting an appropriate value of buffer safety space, the scheme not only avoids packet loss from buffer overflows, but also provides convenience for channel scheduling since the transmission time has been bounded strictly. Using the self-similar traffic model at each ER （edge router）, the influences of the scheme on burst creating, network performance and buffer utilization are simulated, and some related useful conclusions are drawn.
作者 李雷 张明德 孙小菡
机构地区 东南大学电子工程系
出处 《东南大学学报（自然科学版）》 EI CAS CSCD 北大核心 2005年第6期876-880,共5页 Journal of Southeast University：Natural Science Edition
基金 国家自然科学基金资助项目(60272048)
关键词 波分复用 光突发交换 突发装配 缓存安全间隔 自相似流量 wavelength division multiplexing optical burst switching burst assembly buffer safety space self-similar traffic
分类号 TN913.7 [电子电信—通信与信息系统] TP393 [自动化与计算机技术—计算机应用技术]
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参考文献16

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二级参考文献10

  • 1Wei J Y. Advances in the management and control of optical Internet [J]. IEEE Journal on Selected Areas in Communications, 2002, 20(4): 768-785.
  • 2Suzuki M, Otani T, Hayashi M. Trends of optical networking technologies [A]. Proceedings of 2003 5th International Conference on Transparent Optical Networks [C]. 2003. 1, 26-31.
  • 3Brunner M, Mouftah H, Ulema M. Management of optical networks and services[J]. IEEE Communications Magazine, 2004, 42 (1): 34-35.
  • 4Yoo M, Qiao C. Just-Enough-Time (JET): A high speed protocol for bursty traffic in optical networks[A]. Digest of the IEEE/LEOS Summer Topical Meetings [C]. Montreal, Que, Canada: 1997. 26-27.
  • 5Turner J S. Terabit burst switching [J]. Journal of High Speed Network, 1999, 8(1): 3-16.
  • 6Qiao C, Yoo M. Optical burst switching (OBS) - A new paradigm for an optical Internet [J]. Journal of High Speed Network, 1999, 8(1): 69-84.
  • 7Battestilli T, Perros H. An introduction to optical burst switching [J]. IEEE Communications Magazine, 2003, 41(8): S10-S15.
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  • 10Luo Jiangtao, Zeng Qingji, Chi Hao, et al. The impacts of burst assembly on the traffic properties in optical burst switching networks [A]. International Conference on Communication Technology (ICCT) [C]. 2003. 521-524.

共引文献1

东南大学学报（自然科学版）
2005年 第6期

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