Coverage and connectivity management in wireless sensor networks

... Managing network coverage and connectivity is thus important in sensor networks This thesis focuses on the coverage and connectivity management problem in wireless sensor networks The coverage and ... methods and procedures to monitor and control the network sensing coverage (area coverage) and connectivity It involves the functions of coverage and connectivity planning, monitoring and maintenance ... down to coverage and connectivity management In this work, the coverage and connectivity management functions are categorized into microscale management and macroscale management according to...

Báo cáo hóa học: " Research Article Tree Based Protocol for Key Management in Wireless Sensor Networks" pptx

... resistance against the hardest attack: node compromising STKM: A Spanning Tree- Based Key Management Solution for WSNs In this section, we describe a new key management protocol for WSNs Our main objective ... paper Each sensor node i, including the base station, maintains the following variables (i) Fatheri : the father of the sensor in the ﬁnal spanning tree The base station is the root of the tree, so ... neighbors of nodes S5 join the tree Finally, the complete tree is depicted in Figure 3(c) 3.3 Tree Maintenance and Rekeying Once the tree is constructed, each node shares a symmetric key with the base...

Báo cáo sinh học: " Decentralized estimation over orthogonal multiple- access fading channels in wireless sensor networks-- optimal and suboptimal estimators" pot

... Decentralized estimation over orthogonal multipleaccess fading channels in wireless sensor networks— optimal and suboptimal estimators Xin Wang∗1 and Chenyang Yang1 School of Electronics and ... Abstract We study optimal and suboptimal decentralized estimators in wireless sensor networks over orthogonal multipleaccess fading channels in this paper Considering multiple-bit quantization ... existing approaches, and the suboptimal estimator performs closely to the optimal MLE Keywords Decentralized estimation, maximum likelihood estimation, fading channels, wireless sensor network 1 Introduction...

báo cáo hóa học:" Decentralized estimation over orthogonal multiple- access fading channels in wireless sensor networks-- optimal and suboptimal estimators" ppt

Báo cáo sinh học: " Research Article Linear High-Order Distributed Average Consensus Algorithm in Wireless Sensor Networks Gang Xiong and Shalinee Kishore" doc

... S Boyd, and S Lall, “A scheme for robust distributed sensor fusion based on average consensus, ” in Proceedings of the 4th International Symposium on Information Processing in Sensor Networks ... failure, and other practical conditions when utilizing the DAC algorithm in wireless sensor networks References [1] R Olfati-Saber, J A Fax, and R M Murray, Consensus and cooperation in networked ... distributed computation problem in wireless sensor networks Interestingly, the high-order DAC algorithm can be regarded as a spatial-temporal processing technique, where nodes in the network represent...

Báo cáo hóa học: " Research Article Modelling and Implementation of QoS in Wireless Sensor Networks: A Multiconstrained Trafﬁc Engineering Model" pdf

... to a source and carry the information concurrently to the destination in order to achieve load balancing and rapid delivery of the information In a wireless sensor network, both single paths and ... reveals a gain which increases with the reduction of the play-back delay Note however that while multipath routing may result in playback delay gain, increasing the path multiplicity can increase ... [3] C Intanagonwiwat, R Govindan, and D Estrin, “Directed diﬀusion: a scalable and robust communication paradigm for sensor networks,” in Proceedings of the ACM/IEEE Annual International Conference...

Báo cáo hóa học: " Research Article Adaptive Power Allocation in Wireless Sensor Networks with Spatially Correlated Data and Analog Modulation: Perfect and Imperfect CSI Muhammad Hafeez Chaudhary and Luc Vandendorpe" pptx

... Genova, Italy, June 2009 [12] I Bahceci and A K Khandani, “Linear estimation of correlated data in wireless sensor networks with optimum power allocation and analog modulation,” IEEE Transactions ... Power Allocation with Perfect CSI 3.1 Minimization of the Distortion Subject to the Power Constraint We base our adaptive power allocation design on the following optimization problem Prob Minimize ... follows waterﬁlling on channel SNR, that is, Pi increases with increasing ζi ; and for ζi > ζi(o) , the power allocation is according to inversion in the channel SNR, that is, increasing ζi decreases...

báo cáo hóa học:" Bayesian filtering for indoor localization and tracking in wireless sensor networks" doc

... Mahonen, Combining Particle Filtering with Cricket System for Indoor Localization and Tracking Services Personal, Indoor and Mobile Radio Communications, 2007, in PIMRC 2007 IEEE 18th International ... Bayesian ﬁltering for indoor localization and tracking in wireless sensor networks Anup Dhital1,2 , Pau Closas∗3 and Carles Fern´ ndez-Prades3 a Universitat ... account for a priori information of the moving device, the so-called Bayesian ﬁlters In particular, Gaussian ﬁlters and particle ﬁlters were studied and compared in the nonlinear setup The former included...

Báo cáo hóa học: " Bayesian filtering for indoor localization and tracking in wireless sensor networks" docx

Báo cáo hóa học: " Research Article Hop-Distance Estimation in Wireless Sensor Networks with Applications to Resources Allocation Liang Zhao and Qilian Liang" pot

... energy savings and source -to- sink delay in data dissemination for wireless sensor networks, ” in Proceedings of the 8th ACM Symposium on Modeling, Analysis and Simulation of Wireless and Mobile ... D Demaine, and S Teller, “Mobile-assisted localization in wireless sensor networks, ” in Proceedings of the 24th Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM ... Societies (INFOCOM ’05), vol 1, pp 138–149, Miami, Fla, USA, March 2005 [3] A Caruso, S Chessa, S De, and A Urpi, “GPS free coordinate assignment and routing in wireless sensor networks, ” in Proceedings...

Lifetime maximization for connected target coverage in wireless sensor networks

... scheduling sensor activities while maintaining target coverage has been studied in [16, 51, 52, 53, 54] The problem of scheduling sensor activities while maintaining connectivity has been studied in ... related work on scheduling sensor activities and lifetime maximization in wireless sensor networks In chapter 3, we introduce the Connected Target coverage (CTC) problem The sensor ﬁeld consists ... the working sensors A sensor is turned on only if it minimizes the overlapping area with the existing working sensors and if it covers an intersection point of two working sensors A sensor can...

Resource management for target tracking in wireless sensor networks

... domains in wireless sensor networks 1.1 Resource Management in Wireless Sensor Networks Wireless Sensor Networks (WSNs) consist of large numbers of low-power nodes, each with sensing, processing ... RESOURCE MANAGEMENT FOR TARGET TRACKING IN WIRELESS SENSOR NETWORKS HAN MINGDING (B.Eng (Hons), NUS ) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF ... covered in this thesis, organized into three categories: (i) state estimation for target tracking and information-based approaches for sensor selection, (ii) data routing in wireless sensor networks, ...

SECURITY IN WIRELESS SENSOR NETWORKS – IMPROVING THE LEAP PROTOCOL pptx

... The types of topologies used for sensor networks include star, mesh, star-mesh etc [2] In Wireless sensor networks there are two kinds of wireless nodes; sensor and base station nodes The main ... ensuring that the LEAP protocol is able to handle all three scenarios aforementioned, the LEAP protocol will be improved in terms of security for WSNs I used the same mechanisms as the original LEAP ... focuses on LEAP protocol taking into consideration its advantages and attempts to overcome its disadvantages LEAP PROTOCOL LEAP is also a very popular security solution in Wireless Sensor Networks...

Event-to-Sink Reliable Transport in Wireless Sensor Networks docx

... simplicity III THE RELIABLE TRANSPORT PROBLEM IN WSN In the preceding discussions, we introduced the notion of event-to-sink reliability in WSN and pointed out the inapplicability of existing transport ... AKYILDIZ: EVENT-TO-SINK RELIABLE TRANSPORT IN WIRELESS SENSOR NETWORKS 1009 soon as possible We can achieve such an aggressive increase by invoking the fact that the versus relation, is ship in the ... there is a single event occurrence in the wireless sensor ﬁeld as shown in Fig In this case, the sink achieves the desired event-to-sink reliability with minimum energy expenditure using the ESRT...

Báo cáo hóa học: "IDEA1: A validated SystemC-based system-level design and simulation environment for wireless sensor networks" pot

... read the sensor data with kHz sample rate and send the data to the coordinator within a short latency At the early stage, some preliminary designs based on the existing hardware platforms and ... platforms 5.2 Simulation results For each algorithm, many cases with different configurations of parameters (e.g., payload, superframe length, macMaxCSMABackoffs, and macMaxFrameRetries) have ... Cite this article as: Du et al.: IDEA1: A validated SystemC-based systemlevel design and simulation environment for wireless sensor networks EURASIP Journal on Wireless Communications and Networking...

Xem thêm