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Body Area Networks (BANs) are only recently beginning to revolutionize e-healthcare by making monitoring of various patients accessible and convenient for physicians and patients. Past research in BANs has focused on biosensor design, signal processing, power efficiency, and wireless protocols. However, numerous challenges plague its development and implementation to this day. One of these is the...
Existing deployments of wireless sensor networks (WSNs) are often conceived as stand-alone monitoring tools. In this paper, we report instead on a deployment where the WSN is a key component of a closed-loop control system for adaptive lighting in operational road tunnels. WSN nodes along the tunnel walls report light readings to a control station, which closes the loop by setting the intensity of...
Sensor networks can be used to monitor and control pipeline infrastructures. This paper discusses and compares different sensor network architectures that can be used for monitoring underwater pipelines infrastructures. These architectures are underwater wired sensor networks, underwater acoustic wireless sensor networks, RF (Radio Frequency) wireless sensor networks, integrated wired/acoustic wireless...
This paper investigates the mechanism for nodes placement along the riverbanks. The proposed algorithm intends to minimize the total number of sensor nodes with several constraints such as network connectivity and network reliability. This algorithm also aims to achieve the maximum transmission distance along the riverbank which will guarantee the river sensored information coverage, connectivity...
Wireless mesh networks (WMNs) is a new type of network paradigm in which each node is communicates to others to enhance network reliability and performance. Multimedia communication in wireless mesh network is a challenging task. The concept of field based routing (FBR) is gaining the popularity because it uses a little information to route the packets. These routing algorithms are robust, inexpensive...
Wireless sensor networks can be used in industrial applications to overcome some limits of wired fieldbuses. This paper proposed a reliable wireless communication protocol (RWCP) for industrial applications. Protocol design focused on network reliability and power consumption. Reliability was improved by creating redundant links dynamically. Deterministic communication was provided through super frame...
The wireless sensor networks (WSN) with their constant evolution, need new management methods to be monitored efficiently by taking into account their constraints such as energy consumption, reliability and remote monitoring. Note that WSN has diverse application domains: smart home, smart care, environmental data collection etc. In order to manage a large scale WSN, some wireless sensor network management...
The paper proposes Markov models for the reliability analysis of the wireless sensor networks. There are presented the theoretical aspects and some of the variables that are used in the domain of fault tolerant systems. There is also presented a comparison between systems using dedicated replacements and universal replacements for defective nodes. There has been conducted a study regarding the reliability...
To reduce the transmissions among sensor nodes and prolong the lifecycle of the wireless sensor network, a data fusion mechanism based on immune was put forward. The self-study and self-adaptation characters of artificial immune system were used to bring an immune fusion algorithm forward. In the algorithm, the immune anti-redundancy, immune selection and immune memory were used to ensure high reliability...
Cooperative communications have been demonstrated to be effective in combating the multiple fading effects in wireless networks, and improving the network performance in terms of adaptivity, reliability, data throughput and network life time. In this paper, we investigate the use of cooperative communications for quality of service (QoS) provisioning in resource-constrained wireless sensor networks,...
In a wireless sensor network (WSN), the heterogeneous types of sensors can be viewed as intelligent agents that interact with each other locally. The sensors interact with each other either in a cooperative way to form coalitions or in a noncooperative way to deal with conflicts. In this way, the sensors ultimately form desirable topology patterns in terms of various applications. This article addresses...
Due to very sensitive and crucial nature of the collected data, any wireless sensor network (WSN) has to handle efficiently securing it as well as to employ energy-aware and delay-sensitive algorithms in its all layers from application to the physical. These key topics strictly related to each other are of high importance for building and maintaining reliable and long-lasting WSN applications. However,...
Microclimates in many wildland cultural heritage sites are not under surveillance up to now, due to the lack of power supply and network access. However, accurate microclimate data in cultural heritage sites are very important for research and conservation. In this paper, we present a wireless sensor system for long-term microclimate monitoring in wildland cultural heritage sites, and its deployment...
This article proposes a new Mac layer scheme (WSC-MAC) for Wireless Sensor Network (WSN) improving the overall the network reliability by using cooperative communication. We focus our work on a way to define a relay node among the neighborhood of a node, efficiently and with only few signaling messages. We developed a solution based on an automatic forwarder selection and a link state evaluation in...
Routing algorithm problem is one of the major issues to be resolved in wireless sensor network research. This article analyses the optimal hop routing algorithm based on the limitations presented of the minimal hop routing algorithm. The algorithm can synthetically balance the wireless sensor networkpsilas hop, energy and load to achieves optimum network routing, and through stimulation program proofed...
Wireless sensor networks (WSNs) have many applications in industry and environmental monitoring where sensor nodes are deployed at fixed places for monitoring some phenomena. One of the commonly used deterministic deployment topologies is a rectangular grid. In a WSN reliability measure that considers the aggregate flow of sensor data into a sink node is formulated, and it has been shown that computing...
In this work, the optimal network plan in terms of node class selection and number of nodes required to achieve a given network reliability in a wireless mesh network (WMN) was investigated. The network is said to be optimal if it minimizes the network implementation cost while achieving the application matrix requirements. In this work, these requirements are described in terms of communication range,...
In this paper we introduce the concept of a highly synchronised wireless mesh model, leading to a very reliable and coordination-free network. The reliability improvement is caused by the spatial diversity of the propagation paths - the reception of multiple packetspsila copies over many paths, some of them possibly faded or disrupted. To prove the inherently coordination-free capability, the paper...
A new approach to modeling wireless networks is presented that allows for the determination of network reliability using diverse fault assumptions. It is shown that one can exploit network topologies by taking advantage of the broadcast paradigm of wireless communication to detect and possibly correct benign and malicious act. Specifically, a general wireless network model is presented that maps subsets...
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