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The obstacles in the transmission path, the non-isotropic antennas and the impact of environmental phenomena in WSNs may result to unreliable and unpredicted radio transmission, and therefore affect the evaluation of applications which specifically require high coverage and connectivity. Such an issue is known by radio irregularity which greatly impacts algorithms performing under simplistic radio...
Wireless Sensor Networks (WSNs) have witnessed a dramatic increase of the interest of the research community in the last couple of decades. Many applications are being deployed on the base of distributed tiny sensors ranging from mobile target surveillance to intelligent home networking. Research in the WSNs field has always an important goal which is increasing the lifetime of the network. This is...
Wireless sensor networks (WSNs) are being used for many applications ranging from mobile target surveillance to intelligent home networking. Due to the sensitive nature of the data transmitted by these applications, appropriate protection mechanisms are needed to prevent attackers from exploiting the weaknesses of the radio links. In this paper, we propose a novel group key management scheme called...
Wireless Sensor Networks (WSNs) are based on elementary sensors that detect the occurrence of particular events in a monitored area. Among the recent critical WSN applications one can find the border surveillance applications. The first aim of this class of applications is to monitor a country border and detect the presence of intruders near the border line. In this paper, we investigate theoretically...
Wireless Sensor Networks (WSNs) are being used in many applications ranging from target surveillance in battle fields to intelligent home networking. From the recent applications, in which the WSNs are used, we can find the border surveillance applications. The first aim of this class of applications is to monitor a country border and detect the presence of the intruders near this border line. In...
Wireless Sensor Networks (WSNs) are being used for many applications ranging from mobile target surveillance to intelligent home networking. The data transmitted by those applications are sensitive. Then due to the weakness of the radio links, appropriate protection mechanisms are needed to prevent attackers from exploiting those lacks of security. In this paper we present a solution to authenticate...
Research in the wireless sensor networks field has been plagued by difficulties in realistic simulations. These difficulties are often the result of non-realistic assumptions which need to be removed from the mathematical models. Especially, radio propagation models are often simplified and do not take into consideration irregularities such as fading, shadowing, and temporal non-stationarity. In this...
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