Adaptative control of packetization to improve the energy efficiency of VoIP applications in IEEE 802.11 networks

Antonio Estepa, Rafael Estepa, Vicente Mayor, German Madinabeitia, Mark Davis


This paper presents an adaptive algorithm that improves the energy efficiency of VoIP applications over IEEE 802.11 networks. The algorithm seeks to achieve the largest energy savings subject to reaching a minimum speech quality under the prevailing network conditions. The control mechanism used is the dynamic selection of the packet size during the communication. Three different variants of the algorithm a presented.

Our proposal has been implemented in a VoIP application and experimentally validated in a testbed, and the results demonstrate that our packetization period control algorithm can provide energy savings in uncongested IEEE 802.11 networks (up to 30%). Furthermore, under
poor network conditions the algorithm can prolong the duration of the call before it is dropped at the expense of a higher energy consumption during such conditions. Each variant of the algorithm provides a unique balance between keeping quality and saving energy.


Energy efficiency; VoIP ; IEEE 802.11; multimedia

Full Text:



To make sure that you can receive messages from us, please add the '' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.

Copyright © Macrothink Institute ISSN 1943-3581