With the development of wireless network and the popularity of mobile terminal devices,users can watch videos through both the traditional fixed terminals and smart mobile terminals.However,network resources cannot be...With the development of wireless network and the popularity of mobile terminal devices,users can watch videos through both the traditional fixed terminals and smart mobile terminals.However,network resources cannot be effectively shared between fixed terminals and mobile terminals,which causes a huge waste of resources.To solve this problem,this paper proposes a super peer-based P2P VoD architecture for supporting multiple terminals.In the architecture,resources of various terminals can be shared and server load can be reduced.An architecture was first built based on super peers.And then,a super peer selection algorithm was proposed to select super peers to manage other terminals.Considering the characteristics of the different types of terminals,a corresponding caching mechanism was designed for different terminals to achieve efficient resource sharing.Final,the maintenance of the architecture was discussed.The experiment demonstrates that the architecture is feasible.The architecture can effectively improve the quality and fluency of video playback,and reduce the server load.展开更多
Efficient resource search method has significant impact on the scalability and availability of P2P network. Generally there are two search methods, pure Peer-to-Peer method and central index method. Recently, some sea...Efficient resource search method has significant impact on the scalability and availability of P2P network. Generally there are two search methods, pure Peer-to-Peer method and central index method. Recently, some search methods with super-peer concept are appearing, which are the compromise of those two methods and have favorable scalability and avafiability. In this paper, we compare the advantage and deficiency of these three kinds of search methods, and based on JXTA platform design the super-peer search method.展开更多
A hierarchical clustered BitTorrent(CBT)system is proposed to improve the file sharing perfor-mance of the BitTorrent system,in which peers are grouped into clusters in a large-scale BitTorrent-likeunderlying overlay ...A hierarchical clustered BitTorrent(CBT)system is proposed to improve the file sharing perfor-mance of the BitTorrent system,in which peers are grouped into clusters in a large-scale BitTorrent-likeunderlying overlay network in such a way that clusters are evenly distributed and that the peers within thecluster are relatively close to each other.A fluid model is developed to compare the performance of theproposed CBT system with the BitTorrent system,and the result shows that the CBT system can effectivelyimprove the performance of the system.Simulation results also demonstrate that the CBT system improvesthe system scalability and efficiency while retaining the robustness and incentives of the original BitTorrentparadigm.展开更多
基金the National Natural Science Foundation(No.61762029,No.U1811264,No.61662012)Guangxi Natural Science Foundation(No.2016GXNSFAA380193)+1 种基金Guangxi Key Laboratory of Trusted Software(No.kx201726)and the Foundation of Key Laboratory of Cognitive Radio and Information Processing,Ministry of Education(No.CRKL150105)。
文摘With the development of wireless network and the popularity of mobile terminal devices,users can watch videos through both the traditional fixed terminals and smart mobile terminals.However,network resources cannot be effectively shared between fixed terminals and mobile terminals,which causes a huge waste of resources.To solve this problem,this paper proposes a super peer-based P2P VoD architecture for supporting multiple terminals.In the architecture,resources of various terminals can be shared and server load can be reduced.An architecture was first built based on super peers.And then,a super peer selection algorithm was proposed to select super peers to manage other terminals.Considering the characteristics of the different types of terminals,a corresponding caching mechanism was designed for different terminals to achieve efficient resource sharing.Final,the maintenance of the architecture was discussed.The experiment demonstrates that the architecture is feasible.The architecture can effectively improve the quality and fluency of video playback,and reduce the server load.
文摘Efficient resource search method has significant impact on the scalability and availability of P2P network. Generally there are two search methods, pure Peer-to-Peer method and central index method. Recently, some search methods with super-peer concept are appearing, which are the compromise of those two methods and have favorable scalability and avafiability. In this paper, we compare the advantage and deficiency of these three kinds of search methods, and based on JXTA platform design the super-peer search method.
基金the National High Technology Research and Development Programme of China(No2004AA104280,2006AA01Z172)
文摘A hierarchical clustered BitTorrent(CBT)system is proposed to improve the file sharing perfor-mance of the BitTorrent system,in which peers are grouped into clusters in a large-scale BitTorrent-likeunderlying overlay network in such a way that clusters are evenly distributed and that the peers within thecluster are relatively close to each other.A fluid model is developed to compare the performance of theproposed CBT system with the BitTorrent system,and the result shows that the CBT system can effectivelyimprove the performance of the system.Simulation results also demonstrate that the CBT system improvesthe system scalability and efficiency while retaining the robustness and incentives of the original BitTorrentparadigm.
