arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.08110cs.NI
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使用IEEE 802.11 k/v的归属WiFi网络中的信道负载感知PDKEEPAAA/扩展器选择

Channel load aware AP / Extender selection in Home WiFi networks using IEEE 802.11k/v

Toni Adame, Marc Carrascosa, Boris Bellalta, Iván Pretel, Iñaki Etxebarria

摘要:

下一代家庭WiFi网络必须在性能方面向前迈进。诸如在线游戏、虚拟现实或高质量视频内容的新应用将进一步要求更高的吞吐量水平以及低延迟。除了物理(PHY)和介质访问控制(MAC)改进之外,在给定区域中部署多个接入点(AP)可以通过简单地改进平均覆盖和数据率来显著地有助于实现这些性能目标。然而,它开启了一个新的挑战:为每个给定的站(STA)确定最佳AP。本文研究了在家庭WiFi网络中使用辅助AP(也称为扩展器)在吞吐量和延迟方面可实现的性能增益。为了做到这一点,我们引入了一个集中的,易于实现的信道负载感知选择机制的WiFi网络,充分利用IEEE 802.11k/v的能力,从STA收集数据,并相应地分发关联决策。这些决定完全基于AP选择决定度量在AP中(或者,可替换地,在外部网络控制器中)计算,除了RSSI之外,AP选择决定度量还考虑每个潜在的STA-AP/扩展器连接的接入和回程无线链路的负载。所提出的信道负载感知AP和扩展器选择机制的性能评估已经首先在专用模拟器中进行,导致主要分析指标(吞吐量和延迟)的整体改善,并且与传统的基于RSSI的WiFi关联相比,能够在保持网络不拥塞的同时提供至少35%以上的流量。当在实际部署中测试信道负载感知机制时,这种趋势得到了证实,其中STA与所指示的AP/扩展器相关联,并且总吞吐量增加了77.12%。

英文摘要:

Next-generation Home WiFi networks have to step forward in terms of performance. New applications such as on-line games, virtual reality or high quality video contents will further demand higher throughput levels, as well as low latency. Beyond physical (PHY) and medium access control (MAC) improvements, deploying multiple access points (APs) in a given area may significantly contribute to achieve those performance goals by simply improving average coverage and data rates. However, it opens a new challenge: to determine the best AP for each given station (STA). This article studies the achievable performance gains of using secondary APs, also called Extenders, in Home WiFi networks in terms of throughput and delay. To do that, we introduce a centralized, easily implementable channel load aware selection mechanism for WiFi networks that takes full advantage of IEEE 802.11k/v capabilities to collect data from STAs, and distribute association decisions accordingly. These decisions are completely computed in the AP (or, alternatively, in an external network controller) based on an AP selection decision metric that, in addition to RSSI, also takes into account the load of both access and backhaul wireless links for each potential STA-AP/Extender connection. Performance evaluation of the proposed channel load aware AP and Extender selection mechanism has been first conducted in a purpose-built simulator, resulting in an overall improvement of the main analyzed metrics (throughput and delay) and the ability to serve, at least, 35% more traffic while keeping the network uncongested when compared to the traditional RSSI-based WiFi association. This trend was confirmed when the channel load aware mechanism was tested in a real deployment, where STAs were associated to the indicated AP/Extender and total throughput was increased by 77.12%.

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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