Detecting QoS degradation in wireless networks to assist reliable media streaming

T. Dammes, C. Schilling, R. Kays
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引用次数: 3

Abstract

This paper describes an approach to detect Quality of Service degradation due to packet congestion within wireless networks. The proposed approach can assist management systems to detect a degradation based on easy determinable packet metrics. Metrics like interface queue length, round trip times and retry ratio are evaluated regarding thresholds and detection performance. With a combination of metrics, a robust detection can be achieved for TCP and UDP streams using a IEEE 802.11 a/b/g ad-hoc network. As soon as a detection event occurs, a channel transition is engaged as an exemplary counter-measure. This successfully solves transmission problems due to congestion.
检测无线网络中的QoS退化,以帮助可靠的媒体流
本文描述了一种检测无线网络中由于分组拥塞而导致的服务质量下降的方法。所提出的方法可以帮助管理系统基于易于确定的数据包度量来检测降级。根据阈值和检测性能评估接口队列长度、往返时间和重试比率等指标。通过度量的组合,可以使用IEEE 802.11 a/b/g ad-hoc网络实现对TCP和UDP流的鲁棒检测。一旦发生检测事件,通道转换就会作为一种示例性的应对措施。这成功地解决了由于拥塞造成的传输问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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