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In the mobile Internet era, users access interesting information in a continuous manner rather than as one-time results through search engines. The traditional link-based ranking algorithms typically return the relevant “popular” web pages. The current, most important web pages are ranked lower than these pages. Furthermore, most of the results are repeated when the user submits the same query days...
Software-Defined Networking (SDN) brings great opportunities to improve network performance. However, due to budget constraints and technique limitations, Internet Service Providers (ISPs) can upgrade only a limited number of conventional switches to SDN switches in real backbone networks at one time. In this paper, we propose one heuristic scheme for deploying SDN switches in hybrid SDNs. Our scheme...
In Content-Centric Networks (CCN), multiple routers may cache the same content, which makes it possible to retrieve the content chunks in parallel. In this paper, we propose Multi-Source Request and Transmission mechanism (MSRT) for CCN. We develop a MinMax problem to compute the optimal solution to retrieve all the chunks from multiple sources in the shortest time. We prove that the problem is NP...
Current Internet packet forwarding only relies on destination IP address and thus neglects the validation of packet's IP source address for Internet accountability, which incurs many cyber-security threats. State-of-the-art solutions either have issues in spoofing packet filtering accuracy, e.g., false positive and false negative, or encounter scalability and deployment problems, i.e., end-host TCP/IP...
Undoubtedly, peer-to-Peer (P2P) technology is an effectively method for delivering streaming media content over the internet. However, current P2P stream systems also suffer many problems, such as huge bandwidth consumption, less effective in heterogeneous environment, protection of important data, etc. Scalable video coding (SVC), as an extension of H.264/AVC standard, has attracted many researchers...
P2P application has accounted a large proportion of the total Internet traffic. However, existing P2P topology formation protocols always assume a homogeneous environment or neglect the underlying Internet topology. These methods will increase inter-domain traffic so that ISPs always restrict the P2P traffic and current neighbor selection procedure always randomly chooses a peer as its neighbor probably...
In order to precisely procure the Chinese person information on the web, especially distinguish from the namesake, this paper propose a clustering algorithm based on latent semantic model. It establishes for every document a latent semantic model of sentence-word matrix based on central distance, central segment, document length, etc, by building the central word library of person attributes. It clusters...
To support mobile nodes moving across different networks as a whole, the IETF NEMOv6 (RFC 3963) has been proposed. Compared with Mobile IPv6 protocol, the NEMOv6 provides a method to enable a network moving entirely. Mobile Router (MR) is introduced to the NEMOv6, which performs mobility management function for the entire mobile network. All nodes belonged to the mobile network, fixed or mobile, are...
An entire network may move as a unit and change its point of attachment to the Internet dynamically. To support this kind of network mobility, a network mobility basic support protocol for IPv6 (NEMOv6) has been proposed by IETF. This paper analyzes the characteristics of IPv6-based network mobility management, and simulates handoff performance of a mobile router (MR) with a subnet, including one...
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