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Optimized traffic profile for FlexGrid optical networks

機(jī)譯：針對(duì)FlexGrid光網(wǎng)絡(luò)的優(yōu)化流量配置文件

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摘要

This work is focused on studying the connections' bandwidth distribution effects on the FlexGrid network performance. An accurate study of spectrum occupancy in heavy loaded FlexGrid optical networks is carried out. This analysis is useful to figure out which traffic profiles are more suitable for this kind of networks. Two different cases are considered with respect to the offered connections. In the elastic case, connections sizes can take any value from 1 to a maximum number of spectrum slots. In the multi-rate case, only three connections sizes are allowed. It is demonstrated that by generating the connections with some specific statistical properties, the network performance is improved. These properties are derived from the theoretical study of spectrum occupation in ideal conditions. The main contribution of this work is therefore the proposal of an Optimum traffic profile which allows to efficiently use the spectrum in FlexGrid optical networks. The gain obtained by generating the proposed traffic profile is evaluated by means of simulations at the link as well as at the whole network level.
機(jī)譯：這項(xiàng)工作的重點(diǎn)是研究連接的帶寬分布對(duì)FlexGrid網(wǎng)絡(luò)性能的影響。對(duì)重負(fù)荷FlexGrid光網(wǎng)絡(luò)中的頻譜占用進(jìn)行了精確的研究。該分析有助于確定哪些流量配置文件更適合此類網(wǎng)絡(luò)。對(duì)于提供的連接，考慮兩種不同的情況。在彈性情況下，連接大小可以為1到最大頻譜時(shí)隙數(shù)之間的任何值。在多速率情況下，僅允許三個(gè)連接大小。事實(shí)證明，通過生成具有某些特定統(tǒng)計(jì)屬性的連接，可以改善網(wǎng)絡(luò)性能。這些特性來自理想條件下頻譜占用的理論研究。因此，這項(xiàng)工作的主要貢獻(xiàn)是提出了最佳流量配置文件的建議，該配置文件允許在FlexGrid光網(wǎng)絡(luò)中有效地使用頻譜。通過生成鏈路和整個(gè)網(wǎng)絡(luò)級(jí)別的仿真，可以評(píng)估通過生成建議的流量配置文件獲得的增益。

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