Introduction to Simulating radio propagation models and COOJA ARM

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Introduction to Simulating radio propagation models and COOJA ARM

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Maximum values used by ray tracer. May become very time-consuming ... User may track ray paths from a transmitter to a point. Uses the current formula settings ... – PowerPoint PPT presentation

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Title: Introduction to Simulating radio propagation models and COOJA ARM

1
Introduction toSimulating radio propagation
modelsand COOJA ARM
2
One radio
REFRACTION
REFLECTION
DIFFRACTION

receiving a radio signal
Typically 4 different categories
Problem
What happens to the radio signal?
(And how is sound quality affected?)

SCATTERING
3
WSN radio model types

Unit Disk Graph
COOJAs Standard Radio Medium
Bit Error Ratio (BER)
Collected statistical data (or empirical models)
Ray tracing

4
COOJA ARM

Advanced Radio Medium
Advanced when compared to Standard )
Radio propagation models introduction
How ARM works

5
Wikis definitions

Radio Propagation
... is a term used to explain how radio waves
behave when they are transmitted, or are
propagated from one point on the Earth to
another.
Radio Propagation Model
... characterization of radio wave propagation
as a function of frequency, distance and other
conditions.

6
Empirical models

Lots of different models exist
Outdoor
City, Terrain, Rain, Earth curvature
Okumura model built using data collected in Tokyo
Indoor
ITU Model for indoor Attenuation
Log Distance Path Loss Model
Typical parameters frequency, distance, number
of floors, coefficients tuned to different
environments etc.
Above models based on empirical data

7
Analytical approach