Sclable Collaborative Virtual Environment Considering User's Interests Based on P2P Overlay Network

Recently, many applications of VR called collaborative virtual environment (CVE) have been proposed and their cooperation methods by users and scalability issues to support a number of users have been investigated. However, by using conventional client/server model, the usability of co-operative works by users degreases and scalability in CVE cannot be attained as the number of the user increases. Also, in conventional CVE system, the presentation and interaction of 3D objects in CVE to users were simple, limited and did not consider the users background such as users interest and generation. Eventually the user satisfaction for CVE application was not necessarily enough. In order to overcome those difficulties, we introduce a new method which uses P2P overlay network to realize scalable CVE and recommendation system which uses user's interest to present and offer the proper objects in CVE. Using our suggested method, the 3D objects are distributed on the P2P overlay networks and their computing loads can be reduced, eventually the scalability of the CVE can be improved. Furthermore, by reflecting user interest information to the application system, user can access and communicate to 3D objects and contents in which he or she is more interested with higher priority. Thus, the total usability of the CVE system can be improved. In this paper, we propose a new CVE system using P2P overlay network and user recommendation system to reflect user s interest