Frame Aggregation in Central Controlled 802.11 WLANs: The Latency Versus Throughput Tradeoff

Published on Nov 1, 2017in IEEE Communications Letters3.46
· DOI :10.1109/LCOMM.2017.2741940
Jose Saldana8
Estimated H-index: 8
(University of Zaragoza),
Jose Ruiz-Mas7
Estimated H-index: 7
(University of Zaragoza),
Jose Almodovar2
Estimated H-index: 2
Frame aggregation is widely used in 802.11 WLANs in order to provide a significant throughput improvement. However, the latency increase that comes as a counterpart can reduce the quality experienced by the users of applications with real-time constraints. This letter explores the throughput versus latency tradeoff in the context of central controlled solutions (e.g. SDWN-based). First, a scenario with a single Access Point (AP) is used to illustrate the problem and to propose two possible solutions. Then, a centralized algorithm that dynamically (de)activates aggregation is tested in a scenario with a number of APs. The results show that aggregation parameters can be tuned in order to keep latency in low levels, with a low throughput penalty.
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