QoS mapping along the protocol stack: discussion and preliminary results
QoS mapping along the protocol stack: discussion and preliminary results
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沿协议栈的 QoS 映射：讨论和初步结果
DOI：
10.1109/icc.2000.853592
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
L. Dasilva
中科院分区：
文献类型：
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作者：
L. Dasilva
综合网络中需要服务质量（QoS）机制，以满足异构应用的性能要求。我们概述了一个框架，用于预测端到端的QoS在应用层的基础上映射的QoS保证跨层的协议栈和级联的保证跨多个不同的子网络。需要映射来将较低层中提供的QoS保证转换为它们对上层性能指标的影响。我们说明了一些初步的结果，由于分组的分割QoS映射的过程中，我们进行了最坏的情况下的分析，生成一个封闭形式的映射的延迟和两层之间的损失。这项工作的未来扩展将考虑到流量汇总过程以及定量和定性保证的结合。
Quality of service (QoS) mechanisms are needed in integrated networks so that the performance requirements of heterogeneous applications are met. We outline a framework for predicting end-to-end QoS at the application layer based on mapping of QoS guarantees across layers in the protocol stack and concatenation of guarantees across multiple dissimilar sub-networks. Mapping is needed to translate QoS guarantees provided in the lower layers into their effects on upper-layer performance indicators. We illustrate the process with some preliminary results for QoS mapping due to segmentation of packets; we conduct a worst-case analysis, generating a closed-form mapping of delay and losses between two layers. Future extensions of this work will take into account flow aggregation processes and the combination of quantitative and qualitative guarantees.