Supporting Service Differentiation and Maximizing System Saturation Throughput: A Contradictory in IEEE 802.11e WLAN
Supporting Service Differentiation and Maximizing System Saturation Throughput: A Contradictory in IEEE 802.11e WLAN
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DOI：
10.1109/icc.2008.483
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发表时间：
2008-05
期刊：
影响因子：
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通讯作者：
Yun Li;Qianbin Chen;Chonggang Wang;Keping Long
中科院分区：
文献类型：
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作者：
Yun Li;Qianbin Chen;Chonggang Wang;Keping Long
现有的研究主要集中在如何提高WLAN饱和吞吐量和如何提供差异化服务两个方面，而对二者关系的研究较少。在本文中，我们研究了服务差异化对IEEE 802.11e无线局域网饱和吞吐量最大化的影响，并从理论上证明了这是矛盾的，不可能同时实现两者。换句话说，饱和吞吐量在没有服务区分的情况下被最大化，或者服务区分或多或少地降低了最大可实现的饱和吞吐量。
While most existing work focuses separately on how to improve WLAN saturation throughout and how to provide differentiated service, few attention is put to study their relationship. In this paper, we investigate the impact of service differentiation on saturation throughput maximization in IEEE 802.11e WLANs and theoretically prove that it is contradictory and impossible to achieve both of them simultaneously. In other words, saturation throughput is maximized without service differentiation or service differentiation reduces the maximal achievable saturation throughput more or less.