Performance Analysis and Comparison between Legacy-PSM and U-APSD

Vinhas, Adriano; Bernardo, Vitor; Pascoal Curado, Marilia; Braun, Torsten (14 November 2013). Performance Analysis and Comparison between Legacy-PSM and U-APSD. In: 13th Portuguese Conference on Computer Networks (CRC 2013). Leiria, Portugal. November 14 - 15, 2013.

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This paper evaluates the performance of the most popular power saving mechanisms defined in the IEEE 802.11 standard, namely the Power Save Mode (Legacy-PSM) and the Unscheduled Automatic Power Save Delivery (U-APSD). The assessment comprises a detailed study concerning energy efficiency and capability to guarantee the required Quality of Service (QoS) for a certain application. The results, obtained in the OMNeT++ simulator, showed that U-APSD is more energy efficient than Legacy-PSM without compromising the end-to- end delay. Both U-APSD and Legacy-PSM revealed capability to guarantee the application QoS requirements in all the studied scenarios. However, unlike U-APSD, when Legacy-PSM is used in the presence of QoS demanding applications, all the stations connected to the network through the same access point will consume noticeable additional energy.

Item Type:

Conference or Workshop Item (Paper)


08 Faculty of Science > Institute of Computer Science (INF) > Communication and Distributed Systems (CDS)
08 Faculty of Science > Institute of Computer Science (INF)

UniBE Contributor:

Pascoal Curado, Marilia, Braun, Torsten


000 Computer science, knowledge & systems
500 Science > 510 Mathematics




Dimitrios Xenakis

Date Deposited:

12 Mar 2014 12:27

Last Modified:

05 Dec 2022 14:29

Uncontrolled Keywords:

IEEE 802.11, Energy Efficiency, Power Save Mode, U-APSD




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