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Network virtualization has been proposed as a key contribution to the future internetworking paradigm and is expected to play a crucial role in the next generation Internet. Although interesting progress has been made towards network virtualization, end-to-end Quality of Service (QoS) provisioning for multimedia services in network virtualization environments is still an important open topic. In this...
The core issue of deploying PKI always focuses on how to increase the issue efficiency of CRL (Certificate Revocation List) and decrease the deployment cost. Starting with the discussion on change of network structure for the traditional CRL issue mechanism, this paper adopted the dispersed P2P instead of the centralized Client/Server network structure and analyzed its issue efficiency. Finally we...
Internet has developed so fast that networked learning is gradually becoming one important part of the modern education. With many great advantages such as the abundant shared resources, convenient communication and flexible collaboration, the networked learning community is now popular among the youth to make individual education. In this paper, networked learning community is introduced including...
The management organization of the large-scale PKI (public key infrastructure) generally adopts the CRL (certificate revocation list) to collect the invalid digital certificates due to the password disclosure and expiration. It is the core issue that how to increase the distribution efficiency of CRL to decrease the deployment cost. In the paper, it discussed the feasibility of distributing the digital...
The core of large-scale PKI (Public Key Infrastructure) is digital certificate, while in the service of certificate, the existing factors of password disclosure and expiration will lead to the certificate invalidation. Presently, PKI Administration always adopts the method of Certificate Revocation List ('CRL') to summarize the invalidation certificate. However, the biggest bottleneck of CRL application...
By the popularization of the Internet application, the performance requirement of Web servers is becoming higher and higher. Using several hosts as the cluster to provide services together is the common scheme for the moment, with high performance-price ratio, high reliability and scalability, while the key performance of the cluster system is the balancing algorithm. Based on the LVS project, this...
Video sharing is becoming a popular service in Internet. As the popularity of video sharing goes up, the cost of operating a video sharing system is also soaring upward. With its good scalability and flexibility, CDN is commonly adopted as the basic platform in most video sharing services. In this paper, we introduce a typical DNS based CDN architecture, and focus on improving the performance for...
This paper provides a method for Web user access pattern mining based on kohonen neural network. User session vectors were first input to kohonen network, after training we found several clusters, compute the median of each cluster and characterize what the cluster represents with the URLs. When the online user requests URLs, a matching category is found according to the pages the user has accessed...
The increasing video multicasting application over the Internet imposes new challenges to quality of service (QoS), especially due to Internet's inherent heterogeneous networking characteristic. A novel adaptive scheme for multicasting video is presented in this paper, in which MPEG-4 video streaming is split into different priority video layers, and QoS filtering is used on the intermediate network...
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