Location and user-behavior awareness service architecture based on opportunistic computing in ad-hoc sensor networks

The rapid development of mobile computing and ad-hoc sensor networks is gradually making opportunistic computing a reality. In this paper, we discuss the service named Children Care System which is a hypothetical opportunistic computing service designed to provide a solid understanding of the service domain. Children Care System can quickly send alarm messages to the parents when detecting the abnormal status of the children. The service is achieved through the collaboration of the nodes participating in it without a central server or coordinator. For this service, we designed and implemented prototype devices and the essential service components. We also experimentally verified the service with an ad-hoc sensor network testbed. The results show that the performance of Children Care System is quite reasonable as a practical service, even though our study is only at the beginning stages.