Quality of service considerations in collaborative learning environments

Virtual laboratories and distance learning have produced a comfortable, sophisticated, interactive and adaptable teaching model. Moreover, the consistent technical progress in this field allows the development of increasingly interesting applications. We chose to select those elements to create a virtual learning environment. This paper presents QoS considerations in collaborative learning environments, and an architecture capable of managing collaboration with QoS. Simulation results are significant. This model was tested with different network loads. Results indicate that improvements caused by traffic differentiation, even without special network loads, become even more significant as the number of users increases.

[1]  Alejandro Quintero,et al.  Performance evaluation of a broadband wireless access system subjected to heavy load , 2004, Comput. Commun..

[2]  Shervin Shirmohammadi,et al.  JETS: a Java-enabled telecollaboration system , 1997, Proceedings of IEEE International Conference on Multimedia Computing and Systems.

[3]  Hamid Aghvami,et al.  Diffserv extensions for QoS provisioning in IP mobility environments , 2003, IEEE Wirel. Commun..

[4]  Betty A. Collis,et al.  Applications of computer communications in education: an overview , 1999, IEEE Commun. Mag..

[5]  Mikhail J. Atallah,et al.  Internet, education, and the Web , 1996, Proceedings of WET ICE '96. IEEE 5th Workshop on Enabling Technologies; Infrastucture for Collaborative Enterprises.

[6]  Andreas Ausserhofer Web based teaching and learning: a panacea? , 1999, IEEE Commun. Mag..

[7]  Michael C. Dorneich,et al.  The design and implementation of a learning collaboratory , 2000, Smc 2000 conference proceedings. 2000 ieee international conference on systems, man and cybernetics. 'cybernetics evolving to systems, humans, organizations, and their complex interactions' (cat. no.0.

[8]  Samuel Pierre,et al.  Towards a Telecommunication Platform for Supporting Distributed Virtual Laboratories , 2001 .

[9]  G. Licea,et al.  A pattern system supporting QoS for synchronous collaborative systems , 1997, Proceedings of International Conference on Protocols for Multimedia Systems - Multimedia Networking.

[10]  Hayley J. Mayall,et al.  Asynchronous distributed problem-based learning , 2001, Proceedings IEEE International Conference on Advanced Learning Technologies.

[11]  Zheng Wang,et al.  An Architecture for Differentiated Services , 1998, RFC.

[12]  David L. Black,et al.  An Architecture for Differentiated Service , 1998 .

[13]  Betty Collis,et al.  Tele-Learning in a Digital World: The Future of Distance Learning , 1996 .

[14]  Christos Bouras,et al.  Aspects of a Collaborative Learning Environment using Distributed Virtual Environments , 2001 .