Transmission of VoIP Traffic in Multihop Ad Hoc IEEE 802.11b Networks: Experimental Results

Authors:
S. Armenia;L. Galluccio;A. Leonardi;S. Palazzo
Affiliations:
University of Catania;University of Catania;University of Catania;University of Catania
Venue:
WICON '05 Proceedings of the First International Conference on Wireless Internet
Year:
2005

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Abstract

In the last decade numerous studies have been carried out intothe transmission of VoIP traffic over wireless networks. However,only a few works have addressed the topic of supporting real-timeaudio applications on multihop IEEE 802.11 ad hoc networks fromthe perspective of simulations and testbeds. This paper presentsthe results of the implementation of a VoIP testbed on a multihop IEEE 802.11b ad hoc network with stationary hosts. The real-time audiotransmission is evaluated using two different multihop routing protocols,AODV and OLSR. The quality of the voice transmission, using differentcodecs, is measured through different performance metrics such asend-to-end delay, delay jitter and sequence number error.