Path loss model that uses a dual-slope approach with different path loss exponents for different distance ranges. Models signal attenuation with a breakpoint distance that divides propagation into two regions, each with its own path loss characteristics. Particularly useful for environments where propagation behavior changes significantly at a certain distance, such as indoor/outdoor transitions or urban scenarios with varying obstacle densities.

Inheritance diagram

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

Extends

Name	Type	Description
Module	compound module	Base module for all INET compound modules.

Parameters

Name	Type	Default value	Description
displayStringTextFormat	string	""	Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
l01	double		Initial path loss for the near-distance region
l02	double		Initial path loss for the far-distance region
alpha1	double		Path loss exponent for the near-distance region
alpha2	double		Path loss exponent for the far-distance region
breakpointDistance	double

Properties

Name	Value	Description
class	BreakpointPathLoss

Source code

//
// Path loss model that uses a dual-slope approach with different path loss
// exponents for different distance ranges. Models signal attenuation with a
// breakpoint distance that divides propagation into two regions, each with its
// own path loss characteristics. Particularly useful for environments where
// propagation behavior changes significantly at a certain distance, such as
// indoor/outdoor transitions or urban scenarios with varying obstacle densities.
//
module BreakpointPathLoss extends Module like IPathLoss
{
    parameters:
        double l01 @unit(dB);  // Initial path loss for the near-distance region
        double l02 @unit(dB);  // Initial path loss for the far-distance region
        double alpha1;  // Path loss exponent for the near-distance region
        double alpha2;  // Path loss exponent for the far-distance region
        double breakpointDistance @unit(m);
        @class(BreakpointPathLoss);
}

File: src/inet/physicallayer/wireless/common/pathloss/BreakpointPathLoss.ned

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