Time Series Visualization of node congestion in wireless simulations

1. Time Series Visualization of node congestion in wireless simulations CPSC 689-606 Special Topics in User Interfaces for Information Visualization Advisor: Dr.Richard Furuta Isaac Aholu Jeevan Joseph John Dept of Computer Science Texas A & M University

2. Introduction • The Problem • Node congestion visualization • Current visualizations

3. Introduction • The Plan • Provide time-series node visualization using ns2 trace file as the data source

4. Previous works • The Network Simulator- ns2 • support for the simulation of TCP, routing, and multicast protocols • The Network Animator- nam • for viewing network simulation traces and real world packet traces • supports topology layout, packet level animation, and various data inspection tools

5. Data Source • trace files from network simulator (ns2) • contains multiple lines of traces • each line representing a single trace

6. Discrete Tracefile

7. Limitations • Ns2 simulation is continuous in time • Ns2 trace file records discrete events • Mapping of number of lines to time • Approximation of this mapping to a linear scale

8. The Algorithm • Node color changes from green (R=0,G=255,B=0) to red (R=255,G=0,B=0) as congestion increases and vice versa • Node color changes from a current color to a shade of red as congestion increases , ie for s – d , r – d and d- d • Node color changes from a current color to a shade of green as congestion decreases, ie for s – s, r – r, d- s, d- r, s- r and r- s

9. Future work • Make the interface generic for all kinds of traces (wired and wired-cum-wireless networks) • Provide a more real time visualization for congestion

10. Demo