anonymous_namespace{three-gpp-propagation-loss-model.cc} Namespace Reference

Enumerations
enum	SFCL_params {   S_LOS_sigF , S_NLOS_sigF , S_NLOS_CL , Ka_LOS_sigF ,   Ka_NLOS_sigF , Ka_NLOS_CL }
	The enumerator used for code clarity when performing parameter assignment in the GetLoss Methods. More...

Functions
double	ComputeAtmosphericAbsorptionLoss (double freq, double elevAngle)
	Computes the atmospheric absorption loss using the formula described in 3GPP TR 38.811, Sec 6.6.4.
double	ComputeClutterLoss (double freq, const std::map< int, std::vector< float > > *sfcl, double elevAngleQuantized)
	Computes the clutter loss using the formula described in 3GPP TR 38.811, Sec 6.6.6.1-4 and 6.6.6.2, respectively.
double	ComputeIonosphericPlusTroposphericScintillationLoss (double freq, double elevAngleQuantized)
	Computes the ionospheric plus tropospheric scintillation loss using the formulas described in 3GPP TR 38.811, Sec 6.6.6.1-4 and 6.6.6.2, respectively.
double	ComputeNtnPathloss (double freq, double dist3d)
	Computes the free-space path loss using the formula described in 3GPP TR 38.811, Table 6.6.2.
std::tuple< double, double, double, double >	GetBsUtDistancesAndHeights (ns3::Ptr< const ns3::MobilityModel > a, ns3::Ptr< const ns3::MobilityModel > b)
	Get the base station and user terminal relative distances and heights.
std::tuple< double, double >	GetBsUtHeightsUmiStreetCanyon (double heightA, double heightB)
	Get the base station and user terminal heights for the UmiStreetCanyon scenario.

Variables
const double	atmosphericAbsorption [101]
	Array containing the attenuation given by atmospheric absorption.
constexpr double	M_C = 3.0e8
	propagation velocity in free space
const std::map< int, std::vector< float > >	SFCL_DenseUrban
	The map containing the 3GPP value regarding Shadow Fading and Clutter Loss tables for the NTN Dense Urban scenario.
const std::map< int, std::vector< float > >	SFCL_SuburbanRural
	The map containing the 3GPP value regarding Shadow Fading and Clutter Loss tables for the NTN Suburban and Rural scenarios.
const std::map< int, std::vector< float > >	SFCL_Urban
	The map containing the 3GPP value regarding Shadow Fading and Clutter Loss tables for the NTN Urban scenario.
const std::map< int, float >	troposphericScintillationLoss
	Map containing the Tropospheric attenuation in dB with 99% probability at 20 GHz in Toulouse used for tropospheric scintillation losses.

Enumeration Type Documentation

SFCL_params

enum anonymous_namespace{three-gpp-propagation-loss-model.cc}::SFCL_params

The enumerator used for code clarity when performing parameter assignment in the GetLoss Methods.

Enumerator
S_LOS_sigF
S_NLOS_sigF
S_NLOS_CL
Ka_LOS_sigF
Ka_NLOS_sigF
Ka_NLOS_CL

Definition at line 28 of file three-gpp-propagation-loss-model.cc.

Function Documentation

ComputeAtmosphericAbsorptionLoss()

double anonymous_namespace{three-gpp-propagation-loss-model.cc}::ComputeAtmosphericAbsorptionLoss	(	double	freq,
		double	elevAngle )

Computes the atmospheric absorption loss using the formula described in 3GPP TR 38.811, Sec 6.6.4.

Parameters

freq	the operating frequency
elevAngle	the elevation angle between the communicating nodes

Returns

the atmospheric absorption loss for NTN scenarios

Definition at line 186 of file three-gpp-propagation-loss-model.cc.

References atmosphericAbsorption.

ComputeClutterLoss()

double anonymous_namespace{three-gpp-propagation-loss-model.cc}::ComputeClutterLoss	(	double	freq,
		const std::map< int, std::vector< float > > *	sfcl,
		double	elevAngleQuantized )

Computes the clutter loss using the formula described in 3GPP TR 38.811, Sec 6.6.6.1-4 and 6.6.6.2, respectively.

Parameters

freq	the operating frequency
elevAngleQuantized	the quantized elevation angle between the communicating nodes
sfcl	the nested map containing the Shadow Fading and Clutter Loss values for the NTN Suburban and Rural scenario

Returns

the clutter loss for NTN scenarios

Definition at line 236 of file three-gpp-propagation-loss-model.cc.

References Ka_NLOS_CL, and S_NLOS_CL.

ComputeIonosphericPlusTroposphericScintillationLoss()

double anonymous_namespace{three-gpp-propagation-loss-model.cc}::ComputeIonosphericPlusTroposphericScintillationLoss	(	double	freq,
		double	elevAngleQuantized )

Computes the ionospheric plus tropospheric scintillation loss using the formulas described in 3GPP TR 38.811, Sec 6.6.6.1-4 and 6.6.6.2, respectively.

Parameters

freq	the operating frequency
elevAngleQuantized	the quantized elevation angle between the communicating nodes

Returns

the ionospheric plus tropospheric scintillation loss for NTN scenarios

Definition at line 208 of file three-gpp-propagation-loss-model.cc.

References troposphericScintillationLoss.

ComputeNtnPathloss()

double anonymous_namespace{three-gpp-propagation-loss-model.cc}::ComputeNtnPathloss	(	double	freq,
		double	dist3d )

Computes the free-space path loss using the formula described in 3GPP TR 38.811, Table 6.6.2.

Parameters

freq	the operating frequency
dist3d	the 3D distance between the communicating nodes

Returns

the path loss for NTN scenarios

Definition at line 171 of file three-gpp-propagation-loss-model.cc.

GetBsUtDistancesAndHeights()

std::tuple< double, double, double, double > anonymous_namespace{three-gpp-propagation-loss-model.cc}::GetBsUtDistancesAndHeights	(	ns3::Ptr< const ns3::MobilityModel >	a,
		ns3::Ptr< const ns3::MobilityModel >	b )

Get the base station and user terminal relative distances and heights.

Parameters

a	the mobility model of terminal a
b	the mobility model of terminal b

Returns

The tuple [dist2D, dist3D, hBs, hUt], where dist2D and dist3D are the 2D and 3D distances between a and b, respectively, hBs is the bigger height and hUt the smallest.

Definition at line 133 of file three-gpp-propagation-loss-model.cc.

References ns3::ThreeGppChannelConditionModel::Calculate2dDistance(), and ns3::CalculateDistance().

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GetBsUtHeightsUmiStreetCanyon()

std::tuple< double, double > anonymous_namespace{three-gpp-propagation-loss-model.cc}::GetBsUtHeightsUmiStreetCanyon	(	double	heightA,
		double	heightB )

Get the base station and user terminal heights for the UmiStreetCanyon scenario.

Parameters

heightA	the first height in meters
heightB	the second height in meters

Returns

The tuple [hBs, hUt], where hBs is assumed to be = 10 and hUt other height.

Definition at line 154 of file three-gpp-propagation-loss-model.cc.

Variable Documentation

atmosphericAbsorption

const double anonymous_namespace{three-gpp-propagation-loss-model.cc}::atmosphericAbsorption[101]

Initial value:

= {
    0,        0.0300,   0.0350,  0.0380,  0.0390,  0.0410,  0.0420,  0.0450,  0.0480,   0.0500,
    0.0530,   0.0587,   0.0674,  0.0789,  0.0935,  0.1113,  0.1322,  0.1565,  0.1841,   0.2153,
    0.2500,   0.3362,   0.4581,  0.5200,  0.5200,  0.5000,  0.4500,  0.3850,  0.3200,   0.2700,
    0.2500,   0.2517,   0.2568,  0.2651,  0.2765,  0.2907,  0.3077,  0.3273,  0.3493,   0.3736,
    0.4000,   0.4375,   0.4966,  0.5795,  0.6881,  0.8247,  0.9912,  1.1900,  1.4229,   1.6922,
    2.0000,   4.2654,   10.1504, 19.2717, 31.2457, 45.6890, 62.2182, 80.4496, 100.0000, 140.0205,
    170.0000, 100.0000, 78.1682, 59.3955, 43.5434, 30.4733, 20.0465, 12.1244, 6.5683,   3.2397,
    2.0000,   1.7708,   1.5660,  1.3858,  1.2298,  1.0981,  0.9905,  0.9070,  0.8475,   0.8119,
    0.8000,   0.8000,   0.8000,  0.8000,  0.8000,  0.8000,  0.8000,  0.8000,  0.8000,   0.8000,
    0.8000,   0.8029,   0.8112,  0.8243,  0.8416,  0.8625,  0.8864,  0.9127,  0.9408,   0.9701,
    1.0000}

Array containing the attenuation given by atmospheric absorption.

100 samples are selected for frequencies from 1GHz to 100GHz. In order to get the atmospheric absorption loss for a given frequency f: 1- round f to the closest integer between 0 and 100. 2- use the obtained integer to access the corresponding element in the array, that will give the attenuation at that frequency. Data is obtained form ITU-R P.676 Figure 6.

Definition at line 93 of file three-gpp-propagation-loss-model.cc.

Referenced by ComputeAtmosphericAbsorptionLoss().

M_C

double anonymous_namespace{three-gpp-propagation-loss-model.cc}::M_C = 3.0e8

constexpr

propagation velocity in free space

Definition at line 255 of file three-gpp-propagation-loss-model.cc.

SFCL_DenseUrban

const std::map<int, std::vector<float> > anonymous_namespace{three-gpp-propagation-loss-model.cc}::SFCL_DenseUrban

Initial value:

{
    {10, {3.5, 15.5, 34.3, 2.9, 17.1, 44.3}},
    {20, {3.4, 13.9, 30.9, 2.4, 17.1, 39.9}},
    {30, {2.9, 12.4, 29.0, 2.7, 15.6, 37.5}},
    {40, {3.0, 11.7, 27.7, 2.4, 14.6, 35.8}},
    {50, {3.1, 10.6, 26.8, 2.4, 14.2, 34.6}},
    {60, {2.7, 10.5, 26.2, 2.7, 12.6, 33.8}},
    {70, {2.5, 10.1, 25.8, 2.6, 12.1, 33.3}},
    {80, {2.3, 9.2, 25.5, 2.8, 12.3, 33.0}},
    {90, {1.2, 9.2, 25.5, 0.6, 12.3, 32.9}},
}

The map containing the 3GPP value regarding Shadow Fading and Clutter Loss tables for the NTN Dense Urban scenario.

Definition at line 42 of file three-gpp-propagation-loss-model.cc.

SFCL_SuburbanRural

const std::map<int, std::vector<float> > anonymous_namespace{three-gpp-propagation-loss-model.cc}::SFCL_SuburbanRural

Initial value:

{
    {10, {1.79, 8.93, 19.52, 1.9, 10.7, 29.5}},
    {20, {1.14, 9.08, 18.17, 1.6, 10.0, 24.6}},
    {30, {1.14, 8.78, 18.42, 1.9, 11.2, 21.9}},
    {40, {0.92, 10.25, 18.28, 2.3, 11.6, 20.0}},
    {50, {1.42, 10.56, 18.63, 2.7, 11.8, 18.7}},
    {60, {1.56, 10.74, 17.68, 3.1, 10.8, 17.8}},
    {70, {0.85, 10.17, 16.5, 3.0, 10.8, 17.2}},
    {80, {0.72, 11.52, 16.3, 3.6, 10.8, 16.9}},
    {90, {0.72, 11.52, 16.3, 0.4, 10.8, 16.8}},
}

The map containing the 3GPP value regarding Shadow Fading and Clutter Loss tables for the NTN Suburban and Rural scenarios.

Definition at line 74 of file three-gpp-propagation-loss-model.cc.

SFCL_Urban

const std::map<int, std::vector<float> > anonymous_namespace{three-gpp-propagation-loss-model.cc}::SFCL_Urban

Initial value:

{
    {10, {4, 6, 34.3, 4, 6, 44.3}},
    {20, {4, 6, 30.9, 4, 6, 39.9}},
    {30, {4, 6, 29.0, 4, 6, 37.5}},
    {40, {4, 6, 27.7, 4, 6, 35.8}},
    {50, {4, 6, 26.8, 4, 6, 34.6}},
    {60, {4, 6, 26.2, 4, 6, 33.8}},
    {70, {4, 6, 25.8, 4, 6, 33.3}},
    {80, {4, 6, 25.5, 4, 6, 33.0}},
    {90, {4, 6, 25.5, 4, 6, 32.9}},
}

The map containing the 3GPP value regarding Shadow Fading and Clutter Loss tables for the NTN Urban scenario.

Definition at line 58 of file three-gpp-propagation-loss-model.cc.

troposphericScintillationLoss

const std::map<int, float> anonymous_namespace{three-gpp-propagation-loss-model.cc}::troposphericScintillationLoss

Initial value:

{
    {10, {1.08}},
    {20, {0.48}},
    {30, {0.30}},
    {40, {0.22}},
    {50, {0.17}},
    {60, {0.13}},
    {70, {0.12}},
    {80, {0.12}},
    {90, {0.12}},
}

Map containing the Tropospheric attenuation in dB with 99% probability at 20 GHz in Toulouse used for tropospheric scintillation losses.

From Table 6.6.6.2.1-1 of 3GPP TR 38.811.

Definition at line 110 of file three-gpp-propagation-loss-model.cc.

Referenced by ComputeIonosphericPlusTroposphericScintillationLoss().