具有复杂速率可变性和QoS的无线系统中吞吐量的近似

P. Fitzpatrick, M. Ivanovich
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引用次数: 1

摘要

超过3G的无线系统将通过使用QoS机制的通用分组交换无线信道支持实时和弹性流量。本文研究的关键问题是如何估计“尽力而为”弹性业务的吞吐量性能,当它受到可用容量变化的影响时,由于(i)高优先级业务量和(ii)无线电信道的变化。我们扩展了以前在这一领域的工作,表明对于所研究的QoS机制,等效的PS模型提供了呼叫平均吞吐量的良好封闭近似,具有与无线电信道变化和最佳努力呼叫量分布无关的理想特性。因此,我们的研究结果为在具有多个QoS级别和复杂速率可变性的无线电系统中,实际估计具有任意呼叫量分布的最佳努力流量的吞吐量性能提供了基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On Approximating Throughput in Wireless Systems with Complex Rate Variability and QoS
Beyond 3G wireless systems will support real time and elastic traffic over a common packet-switched radio channel using QoS mechanisms. This paper studies the key question of how to estimate the throughput performance of "best effort" elastic traffic when it is subject to available capacity variations due to changes in (i) the amount of higher priority traffic and (ii) the radio channel. We extend previous work in this area to show that for the QoS mechanisms studied, an equivalent PS model provides a good closed-form approximation to call-average throughput, with desirable properties of independence from radio channel variations and best effort call volume distribution. Our findings therefore provide a basis for practically estimating throughput performance of best effort traffic with arbitrary call volume distribution, in radio systems with multiple QoS levels and complex rate variability.
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