Evaluating QoS effects on a user centered CVE

Abstract: Collaborative Virtual Environments (CVEs) allows geographically distributed team to work together around virtual object over the network. The deployment of CVE over the Internet must take into account that the Quality of Service (QoS) is not guaranteed. This paper presents an evaluation of the QoS effects on a CVE based on multi-channel network system. The aim of the study is to investigate the advantages of such a network system on a synchronous collaborative work. We first describe the network layer features of this CVE. Next we explain the method to assess the impacts of QoS on several interactivity indicators. And finally we discuss the results of an experiment carried out upon a collaborative application and propose a technical approach to evolve network communication layer of our CVE