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Device centric service-oriented architectures have shown to be applicable in the automation industry for interconnecting manufacturing devices and enterprise systems, thus, establishing comprehensive heterogeneous service architectures. A similar scenario can also be found in the domain of integrated circuits where a growing number of components is being interconnected by a network inside a single...
The most difficult challenge for the design of wireless sensor networks (WSN) is to maintain long network lifetimes since the sensor nodes are severely energy-constrained. Traditional WSN assumes employment of conventional RF transmitters which consume most of the stored power on the sensor node. In this regard, modulated backscattering (MB) emerges as a promising communication technique alternative,...
A wireless sensor network (WSN) consists of autonomous devices equipped with sensors to cooperatively monitor certain physical or environmental phenomena, such as temperature, vibration, pressure, or pollutants, at different locations. These devices called sensor nodes (SNs) have sensing, computation and wireless communication capabilities. One of the significant features of SNs is their limited battery...
Through analysis of energy consumption of wireless sensor networks with uniform node distribution, this paper finds that energy hole in the wireless sensor networks with uniform node distribution can not be avoided. When network lifetime ends, as much as 90% of network energy remains. However, network lifetime can increase several times by selecting different transmission power levels. The main conclusions...
Traditional energy-balanced clustering algorithms in wireless sensor networks (WSNs) usually overlooked the different characters of energy consumption among clusters, which greatly influenced the efficiency of energy employing. To solve this problem, in this paper, a distributed power proportional clustering (DPPC) algorithm is proposed, in which the clusters are determined to be an optimal distribution...
The wireless mesh network (WMN) is a promising solution to support wireless broadband applications. However, mesh networks face the power unfairness issue. Compared to the users far away from the gateway, the users near the gateway have to relay more traffic and consume more power. This paper proposes a scalable ring-based WMN that can ensure power fairness among users by adjusting its ring widths...
Routing algorithms play important roles in wireless sensor networks (WSNs). Usually, nodes in a WSN run on battery with limited power. Hence, routing with efficient power consumption is becoming a critical issue for WSNs. In this paper, a routing algorithm, referred to as Energy Prediction and Ant Colony Optimization Routing (EPACOR), is proposed. In the EPACOR, when a node needs to deliver data to...
Many sensor networks are deployed for the purpose of covering and monitoring a particular region, and detecting the object of interest in the region. In this paper, based on the probabilistic sensing model, we conduct comprehensive analytical and simulation studies on collaborative information coverage and object detection in wireless sensor networks. More specifically, we first define point information...
Distributed connected dominating tree (CDT) algorithm with multiple objective constraints is proposed for the construction of connected dominating set (CDS) in wireless sensor network. Many algorithms have been presented to guarantee connectivity and coverage of CDS. However, no previous research work considers energy consumption and transmission delays for CDS simultaneously. Based on an (alpha,...
The IEEE802.15.4a Task Group for wireless personal area networks (WPAN) is working on an ultra-wideband (UWB) radio standard for the indoor sensor network applications. In 4a Task Group, various modulation and signal sources are being proposed to find the sensor network solutions satisfied with low cost and low power consumption. Among of them, the non-coherent direct sequences (DS) chaotic system...
In the sensor network the nodes which are nearer to the base station (BS) have additional communication loads of forwarding data generated by distant nodes. Thus they lose their energy rapidly and die soon where as distant nodes remain alive. It creates a bottleneck of communication after sometime for alive nodes. We propose here that distance between two successive nodes around BS should be lesser...
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