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This paper attempts to give a survey of some free software tools for wireless sensor networks. It targets teachers and students who might have the need for education in this area. As a first stage in creating this survey, a process of software collection is presented. First collection step is search through the Shanghai list for the first 50 universities. From these universities, available information...
Fault-tolerant topology control is a critical problem in WSNs. It is important for improving network lifetime and reliability. In this paper, we present a novel algorithm FTMRT, which ensures Fault Tolerance by constructing a Multi-Routing Tree. We firstly construct a multi-routing tree of the initial topology, which ensures there are at least k-disjoint paths from each sensor to the set of supernodes...
Wireless sensor networks (WSNs) serving in hostile environments are susceptible to multiple collocated failures due to explosives and natural calamities such as avalanches, landslides, etc., which can partition the network into disjoint segments. In such a scenario, federating the segments becomes essential for reestablishing communication among segments and resuming the WSN operation. Placing relays...
Devices running on Wireless Sensor Networks (WSNs) generally have limited energy resources, which makes it important to design energy-aware algorithms. Capacitated Minimum Spanning Tree (CMST) algorithms can be designed for finding energy-aware routing paths and for load-balancing among sub-trees connected to the sink device. Despite being studied extensively in central settings, there has not been...
In group activities, tablet scale devices are convenient in applications, such as for trip group message broadcast/communication. This work is to provide proper charger topologies, and the targeted chargers charge all devices in the same time before given to users. The number of devices is from low tens to high tens. We analyze possible scenarios and propose two charger topologies. One is tube-shape...
In consequence of advances in wireless communication, digital systems and micro-electronic-mechanical system technologies wireless sensor networks (WSNs) have been developed and applied in lots of different real-world applications such as military, industrial, environmental, health, etc. Due to their limited resources and constraints, WSNs face with several problems such as energy consumption, node...
Wireless sensor networks are designed to collect information related to some events in hostile environments where human presence is not often possible. That is why we consider that once they are deployed, the sensors are autonomous. Their lifetime tightly rely on the manner of their batteries are utilized during network operations. Then, the most critical feature in sensor networks is the hardship...
In this work, we concentrate on network which is not able communicate with the sensors due to fail in the sensing process due to the temporary links of clutter with the access point. The novelty of the work is mainly divided into two folds mainly i)to know the connectivity problems and its requirements in the relay networks, ii) to restore the connection problems on the sensor nodes and to recover...
The growth of the IP cameras market, due to their low price and high availability, is making Wireless Video Sensor Networks (WVSNs) attractive. In a mesh, multi-hop video surveillance scenario Wi-Fi is the enabling technology for WVSNs, due to its flexibility and low cost. However, WVSNs still suffer from bad performance, throughput unfairness, and energy inefficiency. Previously, we proposed FM-WiFIX+,...
In Wireless Sensor Networks, topology management guarantees energy efficiency and maintains the connection among the nodes.Most of the existing systems are not providing trust among the sensor nodes.Therefore,issues in security should also be considered in the management of topology in WSN.To overcome the above problem,in this paper,we propose (TBR) a TRust Based Routing with Topology management.Moreover...
Wireless sensor networks (WSNs) is an assemblage of several lightweight and portable devices, usually deployed for monitoring and surveillance purposes. On the account of their small size these sensor nodes suffer from certain limitations such as limited source of energy, constrained memory size and low processing speed. Nowadays major research areas include devising new methods to prolong the network...
Now a days usage of Wireless Sensor Networks (WSNs) is increasing, because of its wide application. Unlike common networks the WSNs have the capability of reconfiguration, whenever any defect occurs in the network. However, while routing in these network the loss of data is occurring due to its security lack. Hence many researchers have presented their research for providing secure routing in WSNs...
Many networking applications implement topology adaptations to cope with network dynamics. Related work focuses on the specific application, lacking a general model for topology adaptations. In this paper, we analyze 14 topology adaptations from two different application domains. Based on the derived characteristics, we propose a general topology adaptation model. We present the Topology Adaptation...
Wireless Sensor Network solve the problem of various applications like military, nuclear power plant. This type of application required continuous monitoring, hence security is required for such network. WSN is affected by many attacks, wormhole and selective forwarding attacks are of them. In selective forwarding attack, attacker may refeuse or forward certain messages and simply drop them. In wormhole...
We address the design space exploration of wireless body area networks for wearable and implantable technologies, a task that is increasingly challenging as the number and variety of devices per person grow. Our method efficiently decomposes the problem into smaller subproblems by coordinating specialized analysis and optimization techniques. We leverage mixed integer linear programming to generate...
Wireless Sensor Networks (WSN), driven from multiple engineering disciplines, provide a communication infrastructure for various types of critical and innovative applications. These kinds of miniaturised, autonomous, versatile, lightweighted and autoconfigurable networks have inherent issues that are considered as a very interesting research area. Even if the use of WSN is diverse it seems that they...
In this paper, we present a novel approach to assign paths to data streams in a mission-centric heterogeneous wireless mesh network where nodes have multi-channel radio interfaces. Different than conventional packet-switching routing, our approach assigns the paths using a link utility based on sub-topologies of non-orthogonal frequencies. We use a graph coloring algorithm to calculate the utility...
Energy consumption, traffic adaptability, fast data collection, etc are the major issues in wireless sensor networks (WSNs). Most existing WSN protocols are able to handle one or two of the above issues with the other(s) being compromised. In order to reduce the energy consumption of wireless sensor nodes while having fast data collection under different traffic generating rates, this paper proposes...
Wireless Sensor Network (WSN) is an integration of simple sensing, processing, storage and communication technology into cheap miniature sized devices. Distributed WSN is used for ambient intelligence, where tiny senor nodes sense, process and communicate signals to the base station (BS) for smart decision making. Nodes are deployed randomly in any unattended area for monitoring any physical attribute...
Wireless technology having great application in office, home and business automation and it is a prominent field of research. ZigBee is built on the top of IEEE 802.15.4 standard for communication in wireless personal area network (WPAN). ZigBee is having feature of low cost of implementation, ease of access, low data over IEEE 802.15.4 standard and other traditional wireless network. ZigBee is mess...
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