Mobile agent based metadata framework for heterogeneous wireless sensor network

Wireless sensor network are promising to be used in a wide range of applications, the need to effective save and retrieve the data will grow. Metadata, self-describing data about sensor nodes and sensing data, assist to the data exchange between different users and understand different capabilities provided by heterogeneous sensor networks. Metadata management in resource constrained sensor nodes is unfeasible. Meanwhile, the agent is suitable to the heterogeneous sensor network with its characteristics of self-organization, distributed and strong processing capability. So, to minimize the energy cost of sensor, prolong the lifetime of sensor network and meet the requirements of access to real-time data we propose a framework that store and collection metadata in mobile agent. The proposed approach can deal with complex metadata of heterogeneous sensor network and achieve better performance in communication costs and real time process.