On resource management and QoS guarantees for long range dependent traffic
On resource management and QoS guarantees for long range dependent traffic
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长距离相关流量的资源管理和 QoS 保证
DOI：
10.1109/infcom.1995.515947
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
A. Mukherjee
中科院分区：
文献类型：
--
作者：
A. Adas;A. Mukherjee
通过一个受控分数差分ARIMA（1，d，0）输入过程，研究了长记忆过程对单排队系统队长统计的影响。该过程具有两个参数，分别表示自回归分量和长程相关分量。结果表明，所研究的队长统计量（均值、方差和0.999分位数）与e（c/sup c/spl phi/1/）e（c/sub 2/d）成正比，其中（c/sub 1/，c/sub 2/）为正常数，且c/sub 2/>c/sub 1/.自相关结构对队列长度统计的影响也依赖于输入过程分布的尾部。因此，对于长程相关过程可以实现复用增益，因为所得到的过程具有更紧密的尾部分布。考虑到这些观察结果，以及提供保证的最大延迟、延迟抖动界限和低信元丢失概率的需要，解决方案似乎是（a）如果分布尾部较大，则分配较高的速率，（B）使用复用来缩小这些尾部，（c）结合主动信元丢弃策略应用每个电路帧时钟来处理长距离依赖性。
The effect of long-memory processes on queue length statistics of a single queue system is studied through a controlled fractionally differenced ARIMA (1,d,0) input process. This process has two parameters /spl phi//sub 1/ and d representing an auto-regressive component and a long-range dependent component, respectively. Results show that the queue length statistics studied (mean, variance and the 0.999 quantile) are proportional to e(c/sup c/spl phi/1/) e(c/sub 2/d), where (c/sub 1/, c/sub 2/) are positive constants, and c/sub 2/>c/sub 1/. The effect of the auto-correlation structure on queue length statistics is also dependent on the tail of the distribution of the input process. Therefore, multiplexing gains can be achieved for long-range dependent processes because the resulting process has a tighter tail distribution. Given these observations, and the need to provide guaranteed maximum-delay, delay-jitter bounds, and low cell-loss probabilities, the solution appears to be (a) allocating higher rates if the distribution tails are large, (b) using multiplexing to narrow these tails, (c) applying a per circuit frame-clock in conjunction with an active cell-discard strategy to deal with long-range dependence.