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Reseach of Audio & Video Communication System Based on P2P Network

Author: ZuoQiangXiang
Tutor: WuJie
School: Nanjing University of Aeronautics and Astronautics
Course: Applied Computer Technology
Keywords: Peer-to-peer Audio and video communication Overlay network Topology-aware Heterogeneity Hierarchical
CLC: TN919.8
Type: Master's thesis
Year: 2008
Downloads: 59
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Abstract


Audio and video communication systems in the current application is extremely broad, and are also increasingly important . This is the emergence of the present , most of the C / S mode , in this mode , the server have to bear all the burden , which caused a great deal of pressure to the server , the server is undoubtedly the biggest bottleneck of the system , peer-to-peer (P2P) technology feasible way to resolve . Characterized according to the P2P technology , the major research and application problems are concentrated in the overlay network formed by the layer . Thus , the ultimate question of this paper is how to design a good P2P overlay network model , which is P2P technology research and application key . Therefore, we designed a hierarchical topology -aware network the model - PPAVCS network model and design the corresponding algorithm . The model is a the Kademlia network model based on improved , mainly for the logical network and physical network does not match the common problem of two structured network and node heterogeneity made ??a tentative solution . Introduces the concept of the super- node and domain model supernode play by the strong overall performance of the node , a domain is a super node with its physical distance similar to ordinary nodes , so as to achieve the physical network matching and node different the purpose of the structural . The ordinary node query resources only in the domain when it queries fails by supernode help the inter-domain query . Model performance in a simulated environment P2PSim simulator simulation analysis , simulation results show that the improved model outperforms the Kademlia network model , designed to achieve a basic functions, audio and video communication systems , in order to verify the reality of the model feasible sex .

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