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Demand for users accessing networks anytime and from anywhere has been increasing in the forthcoming advent of heterogeneous society which is the convergence of the existing networks. The existing NAT technologies have some flaws and canpsilat meet the requirements in such environment. In this paper, we present a distributed NAT traversal mechanism suitable for the IP heterogeneous network. The mechanism...
Route optimization provides a short path between the mobile node and the correspondent node in mobile IPv6 protocol and makes them communicate efficiently. Some insider attacks were found while analyzing vulnerability of the route optimization. The simulation experiment shows that the insider attacks make the mobile node fail in using optimized route, and it results in performance degradation and...
Routing algorithms play important roles in wireless sensor networks (WSNs). Usually, nodes in a WSN run on battery with limited power. Hence, routing with efficient power consumption is becoming a critical issue for WSNs. In this paper, a routing algorithm, referred to as Energy Prediction and Ant Colony Optimization Routing (EPACOR), is proposed. In the EPACOR, when a node needs to deliver data to...
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