Mobile enabled large scale wireless sensor networks

Abstract—The combined and separated research advancement in the fields of sensing, communication, and computing have driven the research efforts in wireless sensor networks (WSN) in recent years. According to the traditional definition of WSNs, a dense, static, and prohibitively expensive sensor deployment is im-plicitly required, which has limited the feasibility of WSNs in non-military approaches. Aside from stationary sensor and sink de-ployment, the introduction of mobility of mobile terminals into WSNs can be leveraged to alleviate the burden of certain sta-tic sinks in order for efficient information repository, dissemina-tion and sharing. In fact, the rapid development of diverse short distance wireless communication methods, such as Bluetooth and Zigbee, have not only popularized multi-radio functioned mobile devices, but also found their potential applications via WSN net-working. To realize the goal of large scale wireless sensor net-work deployment, in this paper, we introduce an architecture of multi-radio enabled mobile wireless sensor network (MEMO-SEN), which has taken the heterogeneity and mobility of sensors and sinks into account. The capacity gain and topology dynamics due to mobility in MEMOSEN have been addressed. The design challenges and potential applications of MEMOSEN have been an-alyzed as well. Index Terms—wireless sensor network, mobility, heterogeneity I