In recent years, users of mobile terminals including cellular phones are growing rapidly, and the use range of mobile applications has greatly spread. In proportion to the spreading, the demand that the users want to use the applications in mobile environments as in the fixed ones is increasing. In mobile environments, however, there are problems to be solved for adapting to limited resources (memory, CPU, bandwidth, and so on) on mobile terminals and changes of the environments in which applications are executed. In order to realize these demands as mentioned, a new mechanism is necessary for solving these problems. In order to realize the mechanism, we proposed a mobile agent-based middleware. In this paper, we consider a migration control mechanism of mobile agents for realization of the proposed middleware.
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