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Cloud computing is a new model of consuming and delivering IT and infrastructure resources. It enables users to obtain what they need, as they need it, from advanced applications to IT infrastructure and platform services, including virtual infrastructure, servers and storage. It can provide significant economies of scale and greater business agility, while accelerating the pace of innovation. Network...
In hierarchical Wireless Sensor Networks (WSNs), the Cluster Head (CH) election criterion is critical for the optimum network usage and longevity. With a well-defined criterion, a highly connected topology is formed which is well suited to the requirements of a certain application. A pre-emptive choice of a single and permanent criterion becomes inflexible for those WSNs that are connected to web...
IEEE 802.15.4 Wireless Personal Area Networks (WPANs) are envisaged to play an important role in future ubiquitous network applications. When multiple PANs operate in the same area called personal operating space (POS), they are not aware of each other's presence and hence not able to communicate with each other. In this paper, we present a framework for intercommunication of neighboring PANs located...
Wired-cum-wireless networks are interconnected through proxy or gateway that acts as router and also caters for link MTU mismatch between the two networks. In IPv6 based networks, TCP is mandatory for bulk data transfer from wired to wireless host. This results in end-to-end TCP session through the default proxy. The single proxy supporting a large number of TCP sessions; is vulnerable to buffer overflow...
Wireless Sensor Networks (WSNs) are prone to failures as they are usually deployed in remote and unattended environments. To mitigate the effect of these failures, fault tolerance becomes imperative. Nonetheless, it remains to be a second tier activity—it should not undermine the execution of the mission oriented tasks of WSNs through overly taxing their resources. We define architecture for fault...
RFID technology finds immense applicability in various domains utilizing identification as the base operation such as in access control, localization, and tracking etc. It may be designed to work satisfactorily for either singular or a limited range of applications. However, the strict-coupling between applications and RFID equipment must be relaxed to scale up their usability. In order to achieve...
Location is a kind of contextual information that is often realized through localization technologies in strict sense. The technologies such as WSNs provide geographical location as in Cartesian coordinates or in referenced landmarks, rendering a rigid and unilateral interface to multiple applications. A myriad of applications using localization technologies often do not require precise location,...
Target tracking is one of the key military applications of wireless sensor networks (WSN). The overall procedure involves target detection, localization, and target tracking. Because of the WSNs' resource (especially energy) constraints, it is desired that target tracking could be done by involving as less number of sensor nodes as possible. Due to the uncertain behavior of the target, this goal is...
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