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RECERCAT author Bellalta, Boris author Barceló Vicens, Jaume author Staehle, Dirk author Vinel, Alexey author Oliver Riera, Miquel 2020-04-29T08:26:39Z2020-04-29T08:26:39Z2012 Multi-user spatial multiplexing combined with packet aggregation can significantly increase the performance of Wireless Local Area Networks (WLANs). In this letter, we present and evaluate a simple technique to perform packet aggregation in IEEE 802.11ac MU-MIMO (Multi-user Multiple Input Multiple Output) WLANs. Results show that in non-saturation conditions both the number of active stations (STAs) and the queue size have a significant impact on the system performance. If the number of STAs is excessively high, the heterogeneity of destinations in the packets contained in the queue makes it difficult to take full advantage of packet aggregation. This effect can be alleviated by increasing the queue size, which increases the chances of scheduling a large number of packets at each transmission, hence improving the system throughput at the cost of a higher delay.The authors want to express their gratitude to the anonymous reviewers and the editor for their helpful comments. This work has been partially supported by the Spanish Government under projects TEC2008-06055 (Plan Nacional I+D), CSD2008-00010 (Consolider-Ingenio Program), the Catalan Government (SGR2009#00617) and WINEMO IC0906 COST Action. © 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. http://dx.doi.org/10.1109/LCOMM.2012.081612.120744 info:eu-repo/semantics/openAccess IEEE 802.11ac MU-MIMO Packet aggregation WLANs On the performance of packet aggregation in IEEE 802.11ac MU-MIMO WLANs info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion