Fast Data Collection in Tree-Based Wireless Sensor Networks

projects 2012

Fast Data Collection in Tree-Based Wireless Sensor Networks– Mobile Computing, projects 2012

Abstract:Fast Data Collection in Tree-Based Wireless Sensor Networks

We investigate the following fundamental question – how fast can information be collected from a wireless sensor network organized as tree? To address this, we explore and evaluate a number of different techniques using realistic simulation models under the many-to-one communication paradigm known as convergecast. We first consider time scheduling on a single frequency channel with the aim of minimizing the number of time slots required (schedule length) to complete a convergecast. Next, we combine scheduling with transmission power control to mitigate the effects of interference, and show that while power control helps in reducing the schedule length under a single frequency, scheduling transmissions using multiple frequencies is more efficient. We give lower bounds on the schedule length when interference is completely eliminated, and propose algorithms that achieve these bounds. We also evaluate the performance of various channel assignment methods and find empirically that for moderate size networks of about 100 nodes, the use of multi-frequency scheduling can suffice to eliminate most of the interference. Then, the data collection rate no longer remains limited by interference but by the topology of the routing tree. To this end, we construct degree-constrained spanning trees and capacitated minimal spanning trees, and show significant improvement in scheduling performance over different deployment densities. Lastly, we evaluate the impact of different interference and channel models on the schedule length.

Fast Data Collection in Tree-Based Wireless Sensor Networks– Mobile Computing, projects 2012

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3 Thoughts to “Fast Data Collection in Tree-Based Wireless Sensor Networks”

  1. R.Suganya

    need some model modules for fast data collection in tree-based wireless sensor networks.reply for my mail

    1. R.Suganya

      reply me immediately

  2. coniagin

    send me this project

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