Hwang-Bin Ryou

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SUMMARY An important objective of surveillance sensor networks is to effectively monitor the environment, and detect, localize, and classify targets of interest. The optimal sensor placement enables us to minimize manpower and time, to acquire accurate information on target situation and movement, and to rapidly change tactics in the dynamic field. Most of(More)
In this paper, we propose a novel and efficient genetic algorithm to the optimal sensor placement of nodes for a wireless sensor network designed to monitor enemy vehicles in a hostile region. A notable feature of our genetic algorithm is the combination of mutation derived from physics and crossover in which heterogeneity between genes is removed by(More)
Traditional service discovery protocols cannot be applied directly to mobile ad hoc networks because of their heterogeneity and mobility. It is also important to implement mechanisms to detect, as soon as possible, both the availability and unavailability of services produced when a device joins or leaves the network. Security in these networks is also(More)
MANET(Mobile Ad hoc NETwork) consists of movable only wireless nodes, except fixed station in the wired network. Not only hosts, but also routers for data packet forwarding in network topology changes. It is hard for routing algorithm using previous wired network to be applied to this ad hoc network. In the beginning, table-driven algorithm such as DSDV was(More)