taking advantage of data correlation to control the topology of wireless sensor networks n.
Download
Skip this Video
Download Presentation
Taking Advantage of Data Correlation to Control the Topology of Wireless Sensor Networks

Loading in 2 Seconds...

play fullscreen
1 / 19

Taking Advantage of Data Correlation to Control the Topology of Wireless Sensor Networks - PowerPoint PPT Presentation


  • 108 Views
  • Uploaded on

Taking Advantage of Data Correlation to Control the Topology of Wireless Sensor Networks. Sergio Bermudez and Prof. Stephen Wicker School of ECE, Cornell University To be presented at the 15th International Conference on Telecommunications. Agenda. Introduction Motivation Background

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Taking Advantage of Data Correlation to Control the Topology of Wireless Sensor Networks' - kennan-dunn


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
taking advantage of data correlation to control the topology of wireless sensor networks

Taking Advantage of Data Correlation to Control the Topology of Wireless Sensor Networks

Sergio Bermudez and Prof. Stephen Wicker

School of ECE, Cornell University

To be presented at the 15th International Conference on Telecommunications

agenda
Agenda
  • Introduction
    • Motivation
    • Background
  • Model and Results
    • Assumptions
    • Analysis
  • Conclusions

"Topology Control," Sergio Bermudez

introduction
Introduction
  • Application of wireless sensor network (WSN)
    • Power Grid
    • Water supply pipes
  • Keep nodes in place for long periods
  • Necessity to extend their lifetime
  • Reducing their energy consumption

"Topology Control," Sergio Bermudez

motivation
Motivation
  • Sleeping Schemes
    • reduce energy consumption
  • Data aggregation
    • routing scheme with compression of correlated data

"Topology Control," Sergio Bermudez

motivation1
Motivation
  • Random Clustering
    • Data aggregation at cluster heads

"Topology Control," Sergio Bermudez

conceptual idea
Conceptual idea
  • Combination of approaches to extend the network lifetime
  • Exploit data correlation to control the topology of a wireless network
  • Application to monitor physical infrastructure
    • Modal vibration in structures, e.g. a girder

"Topology Control," Sergio Bermudez

conceptual idea1
Conceptual Idea
  • autonomous creation of clusters
  • scheduling algorithm within these clusters

"Topology Control," Sergio Bermudez

proposed scheme
Proposed Scheme
  • Active nodes and backup nodes
    • Active nodes form the active network
  • Network Functional lifetime
    • network can carry-out useful operations
  • Focus on network connectivity

"Topology Control," Sergio Bermudez

proposed scheme1
Proposed Scheme
  • Two-step procedure:
    • Initial setup: clusters
      • information obtained by the correlation of the sensed data
    • Organization: Sleeping Scheduling
      • energy-efficient scheduling mechanism controls the underlying topology of the network
  • Random value at deployment
    • Cluster formation
  • Random scheduling
    • Energy saving

"Topology Control," Sergio Bermudez

proposed scheme2
Proposed Scheme
  • Advantages
    • Localized protocol
    • Allows for continuous sensing
  • Disadvantages
    • Applicable in environments with strong data correlation
    • Non-uniform energy depletion—secondary concern

"Topology Control," Sergio Bermudez

assumptions
Assumptions
  • Measurements are perfectly correlated within distance tc – spatial correlation
  • Nodes are able to determine data correlation information
  • Nodes distributed according to a Poisson spatial process with intensity 
  • High density of node platforms
  • Boolean communication model, radius rc
  • Uniform energy depletion when a node is active

"Topology Control," Sergio Bermudez

assumptions1
Assumptions
  • Cluster Formation
    • Based on the spatial correlation
    • Define Active and Backup nodes, with

probability pa, pb

  • Sleeping Scheduling
    • Random energy-efficient scheduling mechanism
      • backup nodes belonging to a cluster go to sleep randomly and independently from each other
    • For network robustness the backup nodes wake up periodically, with low-duty cycle

"Topology Control," Sergio Bermudez

analysis network connectivity
Analysis: network connectivity
  • We get a Marked Poisson process
    • Active and Backup nodes, with probability pa, pb
    • Choose appropriate µ such that there is connectivity with high probability

"Topology Control," Sergio Bermudez

results network connectivity
Results: network connectivity

Connectivity as

function of active nodes

Connectivity as

function of

node density

"Topology Control," Sergio Bermudez

analysis number of neighbors
Analysis: number of neighbors
  • Distribution of nearest-neighbor distance
  • Probability that exists a backup node as a neighbor for aj

"Topology Control," Sergio Bermudez

results number of neighbors
Results: number of neighbors

"Topology Control," Sergio Bermudez

results increase in lifetime
Results: increase in lifetime

"Topology Control," Sergio Bermudez

conclusions
Conclusions
  • Approach to control the topology of wireless sensor networks by data correlation
  • Increase of functional lifetime, relevant for the monitoring of physical infrastructure
  • Future work:
    • Analysis with respect to other deployment distribution
    • Couple this scheme with mobile sensor networks

"Topology Control," Sergio Bermudez

further reading
Further Reading
  • “Networking Wireless Sensors”B. Krishnamachari
  • “A survey of Energy-Efficient scheduling mechanisms in sensor networks”L. Wang and Y. Xiao
  • “The impact of spatial correlation on routing with compression in wireless sensor networks”S. Pattem, B. Krishnamachari, andR. Govindan

"Topology Control," Sergio Bermudez