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arXiv 1709.04818cs.NI
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基于IEEE 802.11 ax和IEEE 802.11 ac网络的下行链路调度策略和吞吐量优化

Scheduling strategies and throughput optimization for the Downlink for IEEE 802.11ax and IEEE 802.11ac based networks

Oran Sharon, Yaron Alpert

摘要:

新的IEEE 802.11标准IEEE 802.11ax具有挑战性的目标,即与其前身IEEE 802.11ac相比,为更多用户提供服务,从而实现每个站点一致和可靠的数据流(平均吞吐量)。本文探讨了IEEE 802.11ax的一些新机制,并比较了IEEE 802.11ax和IEEE 802.11ac中基于多输入多输出(MU-MIMO)和正交频分多址(OFDMA)传输复用格式的下行单向UDP多用户(MU)三元组的吞吐量上界。以及在可靠和不可靠信道中用于1、4、8、16、32和64个站场景的MU模式。该比较是根据所使用的调制和编码方案(MCS)进行的。在IEEE 802.11ax中,我们考虑两种类型的确认操作设置,其中最大确认窗口分别为64或256。在SU场景中,IEEE 802.11ax的吞吐量上限在可靠和不可靠信道中分别超过IEEE 802.11ac约52%和74%。在MU-MIMO场景中,IEEE 802.11ax的吞吐量上限在可靠和不可靠信道中分别超过IEEE 802.11ac约59%和103%。此外,随着站的数量增加,IEEE 802.11ax在接入延迟方面的优势也增加。

英文摘要:

The new IEEE 802.11 standard, IEEE 802.11ax, has the challenging goal of serving more users compared to its predecessor IEEE 802.11ac, enabling consistent and reliable streams of data (average throughput) per station. In this paper we explore some of the IEEE 802.11ax new mechanisms and compare between the upper bounds on the throughputs of the Downlink unidirectional UDP Multi Users (MU) triadic based on Multiple-Input-Multiple-Output (MU-MIMO) and Orthogonal Frequency Division Multiple Access (OFDMA) transmission multiplexing format in IEEE 802.11ax vs. IEEE 802.11ac in the Single User (SU) and MU modes for 1, 4, 8, 16, 32 and 64 stations scenario in reliable and unreliable channels. The comparison is made as a function of the Modulation and Coding Schemes (MCS) in use. In IEEE 802.11ax we consider two flavors of acknowledgment operation settings where the maximum acknowledgment windows are 64 or 256 respectively. In SU scenario IEEE 802.11ax upper bounds on the throughputs outperform IEEE 802.11ac by about 52% and 74% in reliable and unreliable channels respectively. In MU-MIMO scenario IEEE 802.11ax upper bounds on the throughputs outperform IEEE 802.11ac by about 59% and 103% in reliable and unreliable channels respectively. Also, as the number of stations increases, the advantage of IEEE 802.11ax in terms of the access delay also increases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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