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Power consumption evaluation of circuit-switched versus packet-switched optical backbone networks

机译:电路交换与分组交换光骨干网络的功耗评估

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摘要

While telecommunication networks have historically been dominated by a circuit-switched paradigm, the last decades have seen a clear trend towards packet-switched networks. In this paper we evaluate how both paradigms perform in optical backbone networks from a power consumption point of view, and whether the general agreement of circuit switching being more power-efficient holds. We consider artificially generated topologies of various sizes, mesh degrees and not yet previously explored in this context transport linerates. We cross-validate our findings with a number of realistic topologies. Our results show that, as a generalization, packet switching can become preferable when the traffic demands are lower than half the transport linerate. We find that an increase in the network node count does not consistently increase the energy savings of circuit switching over packet switching, but is heavily influenced by the mesh degree and (to a minor extent) by the average link length.
机译:尽管电信网络在历史上一直以电路交换模式为主导,但在过去的几十年中,分组交换网络已呈现出明显的趋势。在本文中,我们从功耗的角度评估两种范例在光骨干网中的性能,以及是否保持了电路开关的总体协议更加节能。我们考虑了人工生成的各种大小,网格度的拓扑,并且在此之前尚未进行过运输衬板的探索。我们使用多种实际拓扑对我们的发现进行交叉验证。我们的结果表明,作为概括,当流量需求低于传输线速的一半时,分组交换会变得更可取。我们发现,网络节点数的增加并不能始终如一地增加数据包交换上电路交换的节能量,但受网状度和(在较小程度上)受平均链路长度的影响很大。

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