On the Performance of Packet Aggregation in IEEE 802.11ac MU-MIMO WLANs Articles uri icon

authors

  • Bellalta, B
  • Oliver, M
  • BARCELO VICENS, JAUME
  • Staehle, D.
  • Vinel, A.

publication date

  • October 2012

start page

  • 1588

end page

  • 1591

volume

  • 16

international standard serial number (ISSN)

  • 1089-7798

electronic international standard serial number (EISSN)

  • 1558-2558

abstract

  • 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.