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The wireless assistance system safe@home builds a wireless sensor network which enables the localisation of a person wearing a tag and to collect the person's vital data. Furthermore it provides the opportunity to connect to home automation elements like EnOcean1 sensors and actuators. The goal to this project is to provide a system which can easily be installed into existing homes and therefore is...
The wireless sensor network is a decentralized and self-organized system. Each sensor node in the sensor network should be intelligent enough to carry out its task of monitoring the environment. There would be numerous ways for deploying the sensor nodes in the environment. In this paper, swarm intelligence-based sensor network deployment strategy is proposed. To make a reference point for each sensor...
Mobile sensors are often employed for enhancing the sensing coverage and assisting the data gathering in wireless sensor networks. Equipped with unlimited mobility, they are able to move anywhere within the monitored field. Despite the promising simulation (or testbed) result and theoretical conclusion in paper, we have to realize the assumption on unlimited mobility has limitations and is practically...
This paper proposes a framework to maximize the lifetime of the wireless sensor networks (WSNs) by using a mobile sink when the underlying applications tolerate delayed information delivery to the sink. Within a prescribed delay tolerance level, each node does not need to send the data immediately as it becomes available. Instead, the node can store the data temporarily and transmit it when the mobile...
In wireless sensor networks, mobile sensors are often employed for enhancing the sensing coverage and detection accuracy. Current approaches assume mobile sensors with the capability of arbitrary movement. The usage of such sensors with unlimited mobility, however, requires complicated sensor manufactures and high intelligence of movement which are practically unrealistic in many practical applications...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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