GaussMarkovMobility

simple module

Uses a Gauss-Markov model to control the randomness in the movement. Totally random walk (Brownian motion) is obtained by setting alpha=0, while alpha=1 results a linear motion.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Extends

Name	Type	Description
MovingMobilityBase	simple module	Abstract base module for mobility models.

Parameters

Name	Type	Default value	Description
subjectModule	string	"^"	module path which determines the subject module, the motion of which this mobility model describes, the default value is the parent module
coordinateSystemModule	string	""	module path of the geographic coordinate system module
displayStringTextFormat	string	"p: %p\nv: %v"	format string for the mobility module's display string text
updateDisplayString	bool	true	enables continuous update of the subject module's position via modifying its display string
constraintAreaMinX	double	-inf m	min x position of the constraint area, unconstrained by default (negative infinity)
constraintAreaMinY	double	-inf m	min y position of the constraint area, unconstrained by default (negative infinity)
constraintAreaMinZ	double	-inf m	min z position of the constraint area, unconstrained by default (negative infinity)
constraintAreaMaxX	double	inf m	max x position of the constraint area, unconstrained by default (positive infinity)
constraintAreaMaxY	double	inf m	max y position of the constraint area, unconstrained by default (positive infinity)
constraintAreaMaxZ	double	inf m	max z position of the constraint area, unconstrained by default (positive infinity)
updateInterval	double	0.1s	the simulation time interval used to regularly signal mobility state changes and update the display
faceForward	bool	true
alpha	double	0.5	[0;1], 0 - brown motion, 1 - linear motion
speed	double
speedStdDev	double		speed standard deviation
angle	double	uniform(0deg, 360deg)
angleStdDev	double		angle standard deviation
margin	double

Properties

Name	Value	Description
display	i=block/cogwheel
class	GaussMarkovMobility

Signals

Name	Type	Unit
mobilityStateChanged	inet::MobilityBase

Scheduled messages (observed)

msg	kind	ctrl	tags	msgname	context
omnetpp::cMessage	0			move

Direct method calls (observed)

call to	function	info
SuperpositioningMobility	inet::SuperpositioningMobility::receiveSignal	mobilityStateChanged

Source code

//
// Uses a Gauss-Markov model to control the randomness in the movement.
// Totally random walk (Brownian motion) is obtained by setting alpha=0,
// while alpha=1 results a linear motion.
//
simple GaussMarkovMobility extends MovingMobilityBase
{
    parameters:
        @class(GaussMarkovMobility);
        double alpha = default(0.5); // [0;1], 0 - brown motion, 1 - linear motion
        double speed @unit(mps);
        double speedStdDev @unit(mps);     // speed standard deviation
        double angle @unit(deg) = default(uniform(0deg, 360deg));
        double angleStdDev @unit(deg);     // angle standard deviation
        double margin @unit(m);
}

File: src/inet/mobility/single/GaussMarkovMobility.ned