Auction based strategy for distributed task allocation in wireless sensor networks

... 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

... 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...

Ngày tải lên: 21/06/2014, 17:20

... frequency-asynchronous networks is a challenging task and is left for future work DISTRIBUTED TIME SYNCHRONIZATION AS COUPLED DISCRETE -TIME PLLs The purpose of this section is to discuss the distributed synchronization ... baseband signal received by the kth node in the nth time period reads (sampling index m ranges within −N/2 < m ≤ N/2 with m = corresponding to the firi...

Ngày tải lên: 22/06/2014, 19:20

... 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

... 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

... the node mobility of mobile nodes to provide an efficient dynamic coverage of the region of interest after the initial deployment stage Exploiting mobile nodes for continuous coverage in mobile sensor ... maintain an approximately uniform coverage over time Taking these factors into account, in this paper, we propose a new distributed mobility protocol for mobile node...

Ngày tải lên: 21/06/2014, 05:20

... 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

... scheme, differing only in the fact that multiple keys are used to establish pairwise key instead of just one By increasing the amount of key overlap required for key establishment, this scheme increases ... Generating Key Pool The initial key pool consists of L key groups and each key group consists of M initial keys Hence, the initial key pool contains P = L ∗ M initial k...

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

... 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

... 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

... 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...

Ngày tải lên: 21/06/2014, 16:20

... 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

... 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