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Although solutions have been proposed for NAT traversal in UDP based P2P applications, TCP based NAT traversal still remains challenges due to the relatively complicated protocols. In this paper, we propose a Port Correlation Analysis and Prediction (PCAP) algorithm to predict the NAT allocated port number and a novel PCAP based TCP NAT traversal scheme to build successful P2P connections. We evaluate...
In large scale wireless sensor networks, clustering is an effective technique for the purpose of improving the utilization of limited energy and prolonging the network lifetime. However, the problem of unbalanced energy dissipation exists in the multi-hop clustering model, where the cluster heads closer to the sink have to relay heavier traffic and consume more energy than farther nodes. Unequal clustering...
In this paper, a novel peer-to-peer (P2P) neighbor selection mechanism was proposed to enhance the efficiency of the file sharing process in P2P networks. In the mechanism, a modified and well-designed neighbor peer selection approach was introduced, which selects the neighbor peer based on the weighted value it holds. The weighted value includes several factors, such as the trust value, the number...
IP Multimedia Subsystem (IMS) is a new network architecture for providing multimedia service in the next generation network. 3GPP R6 standards specified that both Internet Protocol version 6 (IPv6) and Session Initiation Protocol (SIP) are default protocols. So IMS network needs to interwork with the early deployed Internet Protocol version 4 (IPv4)-based IMS clients. In this paper, we introduce a...
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