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Taylor-series approximations for queues with arrival correlation

机译:具有到达相关性的队列的泰勒级数逼近

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This paper studies a discrete-time single-server queueing system with correlated arrivals. Arrivals at the queue stem from a number of active sessions, each generating a packet in a slot with a fixed probability q. Since an exact queueing analysis is not feasible for q not equal 1, we rely on Taylor-series expansions of the joint probability generating functions of the number of active sessions and the queue content around q = 0. These expansions are then either combined with the known generating function for q = 1 if the system is stable for q = 1, or with heavy-traffic results if this is not the case. In either case, we obtain expressions for the moments of queue content and packet delay and assess the accuracy of our approximations by a simulation study. (C) 2018 Elsevier Inc. All rights reserved.
机译:本文研究了具有相关到达的离散时间单服务器排队系统。到达队列的原因是许多活动会话,每个活动会话在时隙中以固定概率q生成一个数据包。由于对q不等于1进行精确的排队分析是不可行的,因此我们依赖于联合概率生成函数的泰勒级数展开,该展开概率是活动会话数和q = 0附近的队列内容。然后将这些展开与如果系统对于q = 1稳定,则已知的q = 1生成函数;如果不是,则生成大量交通流量。无论哪种情况,我们都获得队列内容和数据包延迟时刻的表达式,并通过模拟研究评估近似值的准确性。 (C)2018 Elsevier Inc.保留所有权利。

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