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In dynamic Wireless Sensor Networks (WSNs), each sensor node should be allowed to schedule tasks by itself based on current environmental changes. Task scheduling on each sensor node should be done online towards balancing the tradeoff between resources utilization and application performance. In order to solve the problem of frequent exchange of cooperative information in existing cooperative learning...
Device-free localization (DFL) is an emerging wireless network target localization technique that does not need to attach any electronic device with the target. It is remaining as a challenging research problem due to the weak wireless signals and the uncertain wireless communication environment. In this paper, a novel Gaussian Process (GP) based wireless propagation model is proposed to describe...
The fault rate of on-load tap-changer (OLTC) has always been in a high level, and that is exactly the primary reason of transformer faults. As a result, an on-line detection method of OLTC was proposed. The embedded platform and wireless sensor network (WSN) technology was introduced into the on-line detection system. WSN was used to obtain OLTC status information. The embedded platform software,...
With the ubiquity of mobile appliances, efficient wireless access has become an urgent need for mobile users. Efficient wireless access requires accurate radio signal maps. Unfortunately, most of solutions could not be applied to large-scale urban space. Crowdsensing schemes could leverage the smartphone to sense WiFi signals, but could not provide accurate map because of the intolerable noises in...
In this paper we propose and analyze a localized backbone renovating algorithm (LBR) to renovate a broken backbone in the network. This research is motivated by the problem of virtual backbone maintenance in wireless ad hoc and sensor networks, where the coverage area of nodes are disks with identical radii. According to our theoretical analysis, the proposed algorithm has the ability to renovate...
In a wireless sensor network with mobile sinks, the maintenance of efficient data delivery structure often brings a large amount of control overhead, which may offset the benefit of introducing mobile sinks. In this paper, we propose a multi-stage data routing protocol (called MLRP) to address this problem. To reduce the protocol overhead, MLRP integrates layered Voronoi scoping and dynamic anchor...
In a data collection sensor network, how to maximize the network lifetime through topology control remains an open research problem. Previous work has studied this problem by aiming to build a max-lifetime data collection tree, however, tree-based data collection does not necessarily yield maximum network lifetime. In this paper, we consider collaborative multipath data delivery and formulate the...
Diagnosing a large-scale sensor network is a crucial but challenging task. Particular challenges include the resource and bandwidth constraints on sensor nodes, the spatiotemporally dynamic network behaviors, and the lack of accurate models to understand such behaviors in a hostile environment. In this paper, we present the Sensor Anomaly Visualization Engine (SAVE), a system that fully leverages...
In this paper, the configuration characteristic of the safe parameter measurement and alarm system used in a new type mine is introduced. The system is made up of wire communication and radio communication with a topological structure. Then, it respectively introduces the hardware and software construction, the working principle and the method of design, which makes the enhanced single chip microcomputer...
In this paper, we consider how to exploit multi-packet reception (MPR) to increase the capacity for a wireless sensor network. Since MPR behavior at the physical layer affects link layer scheduling, it is necessary to follow a cross-layer approach to obtain an optimal solution. Due to the complexity of cross-layer optimization, although MPR has great potential to increase capacity, optimal solutions...
We study the capabilities of virtual addressing schemes for efficient and failure tolerant routing in sensor networks. In particular, we present the virtual cord protocol (VCP) that uses techniques known from peer-to-peer networks, i.e. distributed hash tables (DHTs) are used to associate data items in sensor networks with particular node addresses. The addresses of nodes are dynamically maintained...
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