arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.05874cs.NIcs.GTcs.MA
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潮汐流量下光网络中的公平资源分配

Fair Resource Allocation in Optical Networks under Tidal Traffic

Tania Panayiotou, Georgios Ellinas

AI总结:

针对潮汐流量下的弹性光网络,提出基于α公平的RSA框架,通过平均主义频谱分配显著改善连接过度/不足配置并实现零阻塞,优于功利主义分配。

摘要:

我们针对可重构弹性光网络在建模的潮汐流量下,提出了一种基于α公平的路由与频谱分配(RSA)框架,该框架基于由标量α(不平等厌恶参数)参数化的社会福利函数的最大化。目标是在所有争用网络资源的连接中,近似一种平均主义的频谱分配(SA),该分配最大化可能的最小SA,从而偏离了仅最大化网络效率的广泛使用的功利主义SA。我们考察了一组现有指标(即连接阻塞、资源利用率、效用的变异系数(CV)),并引入了一组新度量(即连接过度配置(COP)和配置不足(CUP)的改进、未服务流量的CV),使网络运营商能够提前推导并评估一组α公平的RSA解决方案,并选择最符合单个连接和整体网络性能要求的那一个。我们表明,与功利主义分配相比,平均主义SA通过显著改善COP(最高达20%)和CUP(最高达80%)来更好地利用网络资源,同时实现零阻塞。重要的是,效用和未服务流量的CV表明,就分配给连接的效用数量而言最公平的SA并不意味着该SA在连接的可实现服务质量(QoS)方面也是最公平的,而平均主义SA更好地近似了基于QoS的最公平SA。

英文摘要:

We propose an alpha-fair routing and spectrum allocation (RSA) framework for reconfigurable elastic optical networks under modeled tidal traffic, that is based on the maximization of the social welfare function parameterized by a scalar alpha (the inequality aversion parameter). The objective is to approximate an egalitarian spectrum allocation (SA) that maximizes the minimum possible SA over all connections contending for the network resources, shifting from the widely used utilitarian SA that merely maximizes the network efficiency. A set of existing metrics are examined (i.e., connection blocking, resource utilization, coefficient of variation (CV) of utilities), and a set of new measures are also introduced (i.e., improvement on connection over- (COP) and under-provisioning (CUP), CV of unserved traffic), allowing a network operator to derive and evaluate in advance a set of alpha-fair RSA solutions and select the one that best fits the performance requirements of both the individual connections and the overall network. We show that an egalitarian SA better utilizes the network resources by significantly improving both COP (up to 20%) and CUP (up to 80%), compared to the utilitarian allocation, while attaining zero blocking. Importantly, the CVs of utilities and unserved traffic indicate that a SA that is fairest with respect to the amount of utilities allocated to the connections does not imply that the SA is also fairest with respect to the achievable QoS of the connections, while an egalitarian SA better approximates a fairest QoS-based SA.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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