earticle

영어

For the activeness and autonomy of a sensor network, a mobile agent's role that enables a code itself to move between sensor nodes or migrate to a server and carry out a given task is important. Since such a migration method of the mobile agent is a factor that affects the overall performance of the entire distributed system, it is necessary to find efficient migration methods of the mobile agent within the sensor network and to collect and store data related to various components (server, sink and sensor node) of the sensor network, thereby providing consistent naming services. For this, in this paper, we design an improved MetaTable that is divided into MetaData where information on the sensor data server is stored and SubMetaData where various types of information on sink nodes and data on sensor nodes connected with the sink nodes is stored. Also, we propose the efficient method of naming service on the sensor network by using the proposed MetaTable. The migration of mobile agent depends on the information of MetaData and SubMetaData referred to, and the reliability of the migration information is determined by mutual cooperation between a naming agent and each sensor server. And, we implement the migration method of mobile agent by using the naming service via meta_data generation method, migration list and priority. For the verification of validity and guarantee of applicability of the proposed method, we performed experiments on the migrations of the mobile agent and active rule execution through the mutual relations between agents by using meta_data on the components of the sensor network.