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EMP: The Framework of a Parallel Delivery Scheme for Large Scale Virtual Worlds

Now all kinds of 3D virtual worlds have been popular on Internet, but due to gigantic data of virtual scenes and limit network bandwidth, traditional Client/Server based downloading scheme has been bottleneck for a user to construct local virtual worlds swiftly. This paper proposes a parallel delivery scheme for large scale virtual scenes in a two-layer hybrid based P2P(Peer-to-Peer) overlay, in which server notification scheme is used to discover neighbors firstly, then an EMTFOI(Extended Multi-Tier Field of Interest) based culling algorithm is employed to cull needed virtual scenes. To compare with C/S based downloading scheme, this scheme realizes progressive delivery of virtual scenes in parallel with viewpoint movement in a multi-user environment and used bandwidth between nodes soundly.