Online ISSN
2043-6394
Print ISSN
2043-6386
IET Wireless Sensor Systems
Volume 1, Issue 4, December 2011
Volumes & issues:
Volume 1, Issue 4
December 2011
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- Author(s): H.F. Rashvand ; Weidong Yi ; Li Cui
- Source: IET Wireless Sensor Systems, Volume 1, Issue 4, p. 179 –180
- DOI: 10.1049/iet-wss.2011.0174
- Type: Article
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- Author(s): M. Bala Krishna and M.N. Doja
- Source: IET Wireless Sensor Systems, Volume 1, Issue 4, p. 181 –190
- DOI: 10.1049/iet-wss.2011.0068
- Type: Article
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Wireless sensor networks (WSNs) function with constraints in energy, computation and storage. The real-time monitored sensor data are transmitted to the base station through intermediate nodes. Application-specific protocols are being developed to enhance the functionality and performance of WSNs. WSN topology is classified into three phases: (i) topology construction; (ii) topology control and (iii) topology maintenance. The authors propose Swarm Intelligence (SI)-based topology maintenance for link failure and congestion control in WSN. SI-based models like Particle Swarm Optimisation (PSO) and Ant Colony Optimisation (ACO) are used in topology maintenance. The proposed model is compared with the existing distributed topology control techniques based on neighbour, location and direction attributes for WSNs. SI-based techniques indicate performance improvement in topology as compared to the existing techniques. The proposed SI model for topology maintenance evaluates WSN attributes based on (i) particle position and particle velocity in PSO; (ii) pheromone cost and (iii) forage success rate in ACO. SI-based topology maintenance is based on finding global and local minima during the search process. Simulation results indicate performance improvement in throughput, data transmission rate and average power efficiency in SI techniques as compared to the existing topology maintenance techniques. - Author(s): Z. Zhao ; G.-H. Yang ; Q. Liu ; V.O.K. Li ; L. Cui
- Source: IET Wireless Sensor Systems, Volume 1, Issue 4, p. 191 –199
- DOI: 10.1049/iet-wss.2011.0013
- Type: Article
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The authors propose EasiTest, a multi-radio testbed for heterogeneous wireless sensor networks (WSNs). Two types of sensor nodes, specifically, high-speed multi-radio node (EZ271) and low-speed single-radio node (EZ521) are developed. An administration platform is provided to monitor and control the testbed. EasiTest enjoys high flexibility, powerful processing capability and ease of expansion. EasiTest provides a powerful tool not only for the study and evaluation of large-scale, heterogeneous sensor networks, but also for quick prototyping of practical WSN applications. To demonstrate the capability of the testbed, the co-existence problem of IEEE 802.11 and IEEE 802.15.4 is studied. Guidelines are given on channel allocation and network parameter configuration to minimise the interference. In addition, to demonstrate the flexibility of the testbed, the authors evaluate robust opportunistic scheduling for ad hoc networks, a distributed opportunistic scheduling protocol, based on the testbed. The experimental results match with the simulation results very well. - Author(s): S.A. Asghari ; H.G. Zadeh ; H. Taheri ; H. Pedram
- Source: IET Wireless Sensor Systems, Volume 1, Issue 4, p. 200 –205
- DOI: 10.1049/iet-wss.2011.0022
- Type: Article
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Since wireless sensor networks (WSN) as ad hoc networks do not have infrastructures and their topologies change dynamically, network nodes should be able to take suitable decisions without needing to know the network topology. One of these decisions is selecting the appropriate policy for service distribution of the whole network. The method of service distribution in the network is uniform by default. Therefore there may be some nodes in the network that provide service and there is less or no demand for them. So, based on the default attitude, energy and power consumption are high and since WSN are sensitive to the energy and power consumption, this is undesirable. In this study, a self-organised system for service placement and substitution in WSN is presented. By utilising this method, nodes can act automatically in delivering a service. Therefore the nodes that have no service request will be automatically omitted in the network. By utilising the proposed method of this study, the energy and power consumption of a wireless sensor network can be reduced by more than a half. - Author(s): R. Rizk ; H. Elhadidy ; H. Nassar
- Source: IET Wireless Sensor Systems, Volume 1, Issue 4, p. 206 –217
- DOI: 10.1049/iet-wss.2011.0047
- Type: Article
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An optimised mobile radio aware (OMRA) routing algorithm is proposed for wireless sensor networks (WSNs). The proposed OMRA algorithm deals with the network instability, asymmetric links and network connectivity at the same time. It can handle the failure and recover from losing the connection in a network at different communication ranges. It presents mobility to preserve connectivity. It considers variant network conditions to determine alternate routes that provide reliability under lossy WSNs. A general non-linear programming algorithm is suggested in the design of OMRA to achieve the optimal of both flow rate and energy consumption. The results show that OMRA achieves the maximum information flow rate and minimises the total energy usage so that the network lifetime is maximised. - Author(s): X.-X. Cui ; Z. Fang ; P.-C. Zhou ; K. Liu
- Source: IET Wireless Sensor Systems, Volume 1, Issue 4, p. 218 –228
- DOI: 10.1049/iet-wss.2010.0105
- Type: Article
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A popular family of sensing systems work using binary sensors. In this study, the behaviour of binary sensing methods is investigated where the individual sensors only return information regarding the target's presence or absence within their own sensing range. In order to enhance their performance the authors propose a new compact distributed algorithm based on a triplet circle intersection principle where they take the central point of their common intersection arc among the sensor detection circles is considered as the target's position. It was shown that the new model can reduce the cost of resourcing as well as decreasing overhead communication traffics; it therefore fits very well with low-power sensor network applications. The experimental test-bench results verify the superior performance of our algorithm. Moreover, the results reveal improved performance criteria for conventional tracking evaluation of the average error and the root-mean-square error because of inherent measurement effectiveness of the target-tracking problem. - Author(s): D.S. Ghataoura ; J.E. Mitchell ; G.E. Matich
- Source: IET Wireless Sensor Systems, Volume 1, Issue 4, p. 229 –240
- DOI: 10.1049/iet-wss.2011.0045
- Type: Article
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A system termed VIGILANT+ is outlined, which utilises situation awareness for the purposes of enabling distributed, autonomic, sensor management, so that savings on consumption of network resources can be achieved. VIGILANT+ is a novel proposition allowing deployed, unattended, wireless sensor nodes to self-organise into dynamic groups and self-manage their transmissions efficiently, according to a current common mission objective. First, a distributed situation assessment system named PORTENT model detects and characterises potential situations occurring within an uncertain environment, using the metric, quality of surveillance information. Secondly, a Bayesian belief network is utilised to understand and analyse the significance associated with the potential situation, primarily to enable deployed sensors to self-organise and assign themselves to mission objectives autonomously. Thirdly, a system is introduced for distributed autonomic transmission control, which enables the efficient management of sensor network resource consumption. Simulations have been undertaken to verify the integrated VIGILANT+ concepts and to demonstrate the effectiveness of the proposed approach in improving network efficiency, without compromising the presentation of mission surveillance utility. - Author(s): Y. Zhang ; S.F. Zhang ; Y. Ji ; G.X. Wu
- Source: IET Wireless Sensor Systems, Volume 1, Issue 4, p. 241 –247
- DOI: 10.1049/iet-wss.2011.0031
- Type: Article
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Considering that intravenous in blood infusion, usually applied without a proper control of the progress and velocity under unreliable manual monitoring practice, is the most popular and frequent clinical activity throughout the world, which can potentially endanger a patient's life, leads to a huge burden as patients, relatives and nursing staff can cause serious cases of medical negligence. In order to resolve this problem and provide a networkable solution the authors propose a novel radio frequency identification-based wireless sensor networkable intravenous infusion monitoring system. The proposed system is a wireless sensor system based on taking a fork-type light barrier as a sensor, a micro-control unit (MCU) as a ZigBee-based radio frequency device. The system's performance is evaluated through some laboratory experiments using tuning algorithm to demonstrate that the results show the required accuracy of the system to meet practical needs. - Author(s): H. Xia ; Z. Jia ; L. Ju ; Y. Zhu
- Source: IET Wireless Sensor Systems, Volume 1, Issue 4, p. 248 –266
- DOI: 10.1049/iet-wss.2011.0042
- Type: Article
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Owing to the openness in network topology and the absence of centralised administration in management, mobile ad hoc network (MANET) is vulnerable to attacks from malicious nodes. In order to decrease the hazards from these malicious nodes, the authors incorporate the concept of trust into the MANET, and build a trust management model which is divided into two parts: subjective trust evaluation model and trusted routing model. In subjective trust evaluation model, the credibility of nodes can be evaluated using analytic hierarchy process theory and fuzzy logic rules prediction method. Based on the fuzzy dynamic programming theory, in trusted routing model, the authors present a novel trusted routing algorithm which can kick out the untrustworthy nodes in order to obtain a reliable passage delivery route. As an application of the proposed trusted routing algorithm, a novel reactive routing protocol on the basis of the standard dynamic source routing protocol, called fuzzy trusted dynamic source routing (FTDSR) protocol is proposed. Several experiments have been conducted to evaluate the efficiency of the protocol in malicious node identification and attack resistance. The experimental results show that FTDSR can effectively detect the malicious nodes that guarantee the packet delivery ratio and the network throughput. - Author(s): S. Ye ; Y. Lin ; R. Li
- Source: IET Wireless Sensor Systems, Volume 1, Issue 4, p. 267 –274
- DOI: 10.1049/iet-wss.2011.0050
- Type: Article
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In wireless visual sensor networks, the effect of transmission losses on the visual quality of images is always varying and depends on the burst loss length. Among the existing transmission error control techniques, interleaving can improve the visual quality of images without redundant data incurred. Conventionally a larger interleaving data size will be more effective in converting long burst loss into isolated losses. This is at the cost of transmitting more pixels. But how to effectively reduce individual sensor's data load in an energy-constrained distributed transmission network is still an unsolved issue. An energy-aware interleaving algorithm is proposed to regulate burst loss effects by spreading out packets according to each image region's pre-calculated transmission income. Experimental results demonstrate that the proposed scheme can not only improve the end-to-end image transmission quality, but also prolong the lifetime of visual sensor network.
Editorial: Wireless Sensor Networks (WSN) 2011
Swarm intelligence-based topology maintenance protocol for wireless sensor networks
Implementation and application of a multi-radio wireless sensor networks testbed
Designing a self-organised system for service substitution and placement in wireless sensor networks
Optimised mobile radio aware routing algorithm for wireless sensor networks
Compact distributed target-tracking algorithm with binary sensors
VIGILANT+: mission objective interest groups for wireless sensor network surveillance applications
Wireless sensor network-enabled intravenous infusion monitoring
Trust management model for mobile ad hoc network based on analytic hierarchy process and fuzzy theory
Energy-aware interleaving for robust image transmission over visual sensor networks
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