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 (C...

Ngày tải lên: 12/09/2015, 08:19

... 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 E...

Ngày tải lên: 16/10/2015, 11:57

... Cort´ s, and A Brandwajn, e Exploring landmark placement strategies for self localization in wireless sensor networks,” 2006, http://rp.lip6.fr/∼benbadis/landmarks placement/ ... routing performance, avoiding the need of equally distant landmark placement We also notice again that as the number of landmarks increases up to a certain threshold, considerable performance ga...

Ngày tải lên: 22/06/2014, 00:20

... consistency) Although the estimation of clock parameters using a quadratic model is computationally more demanding than using the linear model, it helps in maintaining long-term synchronization among ... after every minutes Therefore, there is a need for a better model to estimate the clock parameters for achieving long-term synchronization in WSNs And this paper targets...

Ngày tải lên: 22/06/2014, 19:20

... In Chapter 5, the decision making protocols for winner determination in reverse auction- based task allocation are introduced Our proposed Energy and Delay Efficient Distributed Winner Determination ... centralized winner determination method The task message format for centralize method is {Task, Task Size, Task Deadline} where Task can be any low-level tasks such as s...

Ngày tải lên: 30/09/2015, 14:23

... world In the paper, we presented an analytical modeling to formulate the hop-distance relationship considering the quasi-UDG model Senor nodes are randomly distributed in a circular region according ... developed hop-distance relationship considering the quasi-UDG model in WSN localizations We designed a LS-based localization algorithm using our developed relationship...

Ngày tải lên: 20/06/2014, 22:20

... 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 b...

Ngày tải lên: 21/06/2014, 11:20

... 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 Universita...

Ngày tải lên: 21/06/2014, 17:20

... low-memory implementations for SPIHT compression In strip-based coding, SPIHT coding is sequentially performed on a few lines of wavelet coefficients that are stored in a strip buffer as shown in ... improvements in lowmemory implementations for image compression In stripbased coding, a few image lines that are acquired in raster scan format are first wavelet transform...

Ngày tải lên: 21/06/2014, 20:20

... Collaborative Target Tracking Framework In this study, we develop an energy-efficient distributed collaborative target tracking framework based on mobile agent computing paradigm The target tracking task initialization, ... before sending its TargetInfo message The collection of TargetInfo messages is fulfilled in a time window in each cycling time step Any TargetInfo mes...

Ngày tải lên: 21/06/2014, 20:20

... 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 Universita...

Ngày tải lên: 21/06/2014, 23:20

... link costs IL,B-Sink , IL,D-Sink , and IL,J-Sink , and then add their link costs to ASink to form CB-Sink , CD-Sink , and CJ-Sink , respectively Nodes B, D, and J store these information in their ... carefully defining link cost as a function of receiving and transmission power using that link The transmission-value is set initially same for all the nodes The link cost between nodes u...

Ngày tải lên: 21/06/2014, 23:20

... mean of the ARE of all sink nodes We generate 100 connected network instances for each simulation and spawn multirate queries in each network instance for 100 times The average performance for ... optimizing the number of replicas for event information in wireless sensor networks, when queries are disseminated using expanding rings The authors also derived the replication st...

Ngày tải lên: 22/06/2014, 19:20

... sections introduce the framework for conversational video applications, a new and simple model of conversational video over wireless LAN dimensioning, and show that different results are achieved using ... the other hand, taking into account the kind of applications proposed, that is, multivideo conference, fixedmobile convergent video applications over a single terminal,...

Ngày tải lên: 22/06/2014, 19:20

... 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 an...

Ngày tải lên: 14/09/2015, 14:05