Improving VHT MU-MIMO communications by concatenating long data streams in consecutive groups

A. Syed, L. Trajković
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引用次数: 4

Abstract

Very High Throughput Multi-User Multiple Input Multiple Output (VHT MU-MIMO) is an 802.11ac communication mode that allows an Access Point (AP) to simultaneously transmit multiple data streams as Aggregated Multi-Protocol Data Units (A-MPDUs) to a group of multiple stations (STAs) over the same channel. This mode combines communication technologies that enable the 802.11ac protocol to use spectrum more efficiently compared to the previous standards. However, VHT MU-MIMO wastes an unused part of the Physical Protocol Data Unit (PPDU) interval when short and long data streams are grouped together. In this paper, we propose a solution that improves VHT MUMIMO communications by reducing wasted portion of the PPDU duration of short data streams by concatenating longer data streams in consecutive groups. Simulations of the VHT MUMIMO communication process with and without the proposed approach indicate smaller wasted part and shorter transmission time of randomly generated STAs data streams.
通过在连续组中连接长数据流来改进VHT MU-MIMO通信
非常高吞吐量多用户多输入多输出(VHT MU-MIMO)是一种802.11ac通信模式,允许接入点(AP)同时将多个数据流作为聚合多协议数据单元(a - mpdu)传输到同一信道上的一组多个站点(sta)。与以前的标准相比,这种模式结合了通信技术,使802.11ac协议能够更有效地使用频谱。然而,当短数据流和长数据流分组在一起时,VHT MU-MIMO浪费了物理协议数据单元(PPDU)间隔中未使用的部分。在本文中,我们提出了一种解决方案,通过将较长的数据流串联在连续的组中,减少了短数据流的PPDU持续时间的浪费部分,从而改善了VHT MUMIMO通信。对采用和不采用该方法的VHT MUMIMO通信过程的仿真表明,随机生成的sta数据流的浪费部分更小,传输时间更短。
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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