arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1811.04763math.PR
收藏

大规模Erlang队列网络的平衡状态

The Equilibrium States of Large Networks of Erlang Queues

INRIA Paris(巴黎国家信息与自动化研究所)

Davit Martirosyan, Philippe Robert

AI总结:

本文研究了大规模Erlang队列网络中分配算法的平衡状态,通过解析和概率方法分析了动态系统的稳定性及多平衡点的存在条件。

摘要:

对具有大量节点且容量有限的网络中分配算法的平衡性质进行了研究。每个节点都在接收请求流,当请求到达一个饱和节点(即容量完全利用的节点)时,分配算法可能会尝试将请求重新分配到未饱和的节点。对于考虑的算法,重新分配会产生代价:要么系统需要额外容量,要么重新分配请求的处理时间会增加。本文分析了当节点数量变得很大时,所关联的渐近动态系统平衡点的性质。此时,经典的Gibbens、Hunt和Kelly(1990)模型在此领域被重新审视。对于对应的动态系统,已知的Lyapunov函数的缺乏显著复杂化了分析。采用了几种技术:解析和缩放方法来识别平衡点。我们确定了参数子集,使得这些网络的极限随机模型具有多个平衡点。概率方法,如耦合,被用来证明其中一些的稳定性。还获得了关于平衡点的指数稳定性准则,该准则与关联线性算子的谱间隙有关。

英文摘要:

The equilibrium properties of allocation algorithms for networks with a large number of nodes with finite capacity are investigated. Every node is receiving a flow of requests and when a request arrives at a saturated node, i.e. a node whose capacity is fully utilized, an allocation algorithm may attempt to re-allocate the request to a non-saturated node. For the algorithms considered, the re-allocation comes at a price: either an extra-capacity is required in the system or the processing time of a re-allocated request is increased. The paper analyzes the properties of the equilibrium points of the asymptotic associated dynamical system when the number of nodes gets large. At this occasion the classical model of {\em Gibbens, Hunt and Kelly} (1990) in this domain is revisited. The absence of known Lyapunov functions for the corresponding dynamical system complicates significantly the analysis. Several techniques are used: Analytic and scaling methods to identify the equilibrium points. We identify the subset of parameters for which the limiting stochastic model of these networks has multiple equilibrium points. Probabilistic approaches, like coupling, are used to prove the stability of some of them. A criterion of exponential stability with the spectral gap of the associated linear operator of equilibrium points is also obtained.

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。

↑