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We evaluate a routing metric, called TXPFI, which captures the expected number of frame transmissions needed for successful delivery of data in Wireless Sensor Networks (WSNs) featuring non-fully cooperative nodes and unreliable links. The study, which addresses the exploitation of the TXPFI in routing protocols of distance-vector type, assesses the impact of different network settings on the performance...
Wireless Sensor Networks (WSNs) often need to operate under strict requirements on energy consumption and be capable of self-adapting to the presence of non-trusted nodes which do not fully cooperate in the packet forwarding operation. In such an environment, the mechanism employed for the calculation of routing paths of minimum cost in terms of the number of transmissions executed for the reliable...
The proliferation of Wireless Sensor Networks (WSNs) has driven the design of Virtual Sensor Networks (VSNs) which decouple the physical sensor deployment from the applications running on top of it. In this concept, the Wireless Sensor Networks are no longer deployed to support a specific service but are capable of collaborating among each other (even if they belong to different administrator domains...
The diversity of applications that current and emerging Wireless Sensor Networks (WSNs) are called to support imposes different requirements on the underlying network with respect to delay and loss, while at the same time the WSN imposes its own intricacies. The satisfaction of these requirements highly depends on the metric upon which the forwarding routes are decided. In this view, the IETF ROLL...
Wireless Sensor Networks are gaining popularity due to the fact that they offer low-cost solutions for a variety of application areas. However, these networks are highly susceptible to attacks, due to both the open and distributed nature of the network, as well as the limited resources of the nodes, which dictate the implementation of sophisticated security frameworks. Addressing this challenge in...
Visual sensor networks (VSN) are considered among the most advanced streaming multimedia services of future ad hoc networks. A VSN is a network of miniaturized, battery powered sensing devices, able to capture and pre-process video streams and transmit them efficiently via session oriented wireless connections. Among the various challenging issues in VSN, we highlight streaming and service discovery...
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