Research Article
User and network level evaluation of VoIP over emergency ad-hoc networks
@INPROCEEDINGS{10.4108/ICST.MOBIMEDIA2009.7475, author={Konstantinos Birkos and Christos Papageorgiou and Tasos Dagiuklas and Stavros Kotsopoulos}, title={User and network level evaluation of VoIP over emergency ad-hoc networks}, proceedings={Secure and reliable multimedia communications and coordination for Emergency Services in heterogeneous wireless networks}, publisher={ACM}, proceedings_a={PEACE}, year={2010}, month={5}, keywords={VoIP evaluation emergency communications ad-hoc networks human mobility model}, doi={10.4108/ICST.MOBIMEDIA2009.7475} }- Konstantinos Birkos
Christos Papageorgiou
Tasos Dagiuklas
Stavros Kotsopoulos
Year: 2010
User and network level evaluation of VoIP over emergency ad-hoc networks
PEACE
ICST
DOI: 10.4108/ICST.MOBIMEDIA2009.7475
Abstract
In this paper, a performance evaluation of VoIP over ad hoc networks in emergency scenarios is presented. In these scenarios, emergency workers need to act and communicate with each other in disaster areas that significantly differ from the usual scenarios found in the literature. Obstacles placed in the network area pose limitations to nodes' mobility and signal propagation with considerable impact on the voice quality. Simulations based on the Human Obstacle Mobility model (HUMO) have been performed in order to quantify the performance degradation due to the presence of obstacles. In doing so, network performance metrics and human perception metrics based on the extended E-model have been used. It is shown how different voice codecs behave in different obstacle coverage and mobility scenarios. Furthermore, MOS distribution is approximated. Results underline the importance of simulation environment to the derivation of realistic results concerning VoIP quality.