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Code Issues Releases Wiki Activity

More fixes on propagation model

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This commit is contained in:
Tim Schubert 2020-08-19 16:26:27 +02:00
parent ad22221f42
commit df97dfa3e4
4 changed files with 71 additions and 88 deletions
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33
examples/leo-delay-tracing-example.cc
View file

@ -74,17 +74,18 @@ int main (int argc, char *argv[])
// Install internet stack on nodes // Install internet stack on nodes
AodvHelper aodv; AodvHelper aodv;
aodv.Set ("HelloInterval", TimeValue (Seconds (1))); //aodv.Set ("HelloInterval", TimeValue (Minutes (1)));
aodv.Set ("TtlStart", UintegerValue (10)); aodv.Set ("TtlStart", UintegerValue (5));
aodv.Set ("TtlIncrement", UintegerValue (10)); aodv.Set ("TtlIncrement", UintegerValue (5));
aodv.Set ("TtlThreshold", UintegerValue (100)); aodv.Set ("TtlThreshold", UintegerValue (200));
aodv.Set ("RreqRetries", UintegerValue (100)); aodv.Set ("RreqRetries", UintegerValue (1000));
aodv.Set ("RreqRateLimit", UintegerValue (10)); aodv.Set ("RreqRateLimit", UintegerValue (100));
aodv.Set ("RerrRateLimit", UintegerValue (10)); //aodv.Set ("RerrRateLimit", UintegerValue (1));
aodv.Set ("ActiveRouteTimeout", TimeValue (Minutes (1))); //aodv.Set ("ActiveRouteTimeout", TimeValue (Minutes (1)));
aodv.Set ("NextHopWait", TimeValue (MilliSeconds (200))); //aodv.Set ("NextHopWait", TimeValue (MilliSeconds (200)));
aodv.Set ("NetDiameter", UintegerValue (1000)); aodv.Set ("NetDiameter", UintegerValue (100));
aodv.Set ("PathDiscoveryTime", TimeValue (Seconds (1))); //aodv.Set ("AllowedHelloLoss", UintegerValue (10000));
//aodv.Set ("PathDiscoveryTime", TimeValue (Seconds (1)));
InternetStackHelper stack; InternetStackHelper stack;
stack.SetRoutingHelper (aodv); stack.SetRoutingHelper (aodv);
@ -107,8 +108,8 @@ int main (int argc, char *argv[])
Address remote = stations.Get (1)->GetObject<Ipv4> ()->GetAddress (1, 0).GetLocal ();//utIp.GetAddress (1, 0); Address remote = stations.Get (1)->GetObject<Ipv4> ()->GetAddress (1, 0).GetLocal ();//utIp.GetAddress (1, 0);
std::cout << "REMOTE=" << Ipv4Address::ConvertFrom (remote); std::cout << "REMOTE=" << Ipv4Address::ConvertFrom (remote);
UdpClientHelper echoClient (remote, 9); UdpClientHelper echoClient (remote, 9);
echoClient.SetAttribute ("MaxPackets", UintegerValue (360)); echoClient.SetAttribute ("MaxPackets", UintegerValue (60));
echoClient.SetAttribute ("Interval", TimeValue (Seconds (10.0))); echoClient.SetAttribute ("Interval", TimeValue (Seconds (1)));
echoClient.SetAttribute ("PacketSize", UintegerValue (1024)); echoClient.SetAttribute ("PacketSize", UintegerValue (1024));
clientApps.Add (echoClient.Install (stations.Get (3))); clientApps.Add (echoClient.Install (stations.Get (3)));
@ -118,9 +119,11 @@ int main (int argc, char *argv[])
std::cout << "Context,Sequence Number,Timestamp,Delay" << std::endl; std::cout << "Context,Sequence Number,Timestamp,Delay" << std::endl;
serverApps.Start (Seconds (1)); serverApps.Start (Seconds (1));
clientApps.Start (Seconds (2)); clientApps.Start (Seconds (1));
serverApps.Stop (Minutes (1));
clientApps.Stop (Minutes (1));
Simulator::Stop (Minutes (60)); Simulator::Stop (Minutes (1));
Simulator::Run (); Simulator::Run ();
Simulator::Destroy (); Simulator::Destroy ();

80
model/isl-propagation-loss-model.cc
View file

@ -1,29 +1,8 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2005,2006,2007 INRIA
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
* Contributions: Timo Bingmann <timo.bingmann@student.kit.edu>
* Contributions: Gary Pei <guangyu.pei@boeing.com> for fixed RSS
* Contributions: Tom Hewer <tomhewer@mac.com> for two ray ground model
* Pavel Boyko <boyko@iitp.ru> for matrix
*/
#include "ns3/log.h" #include "ns3/log.h"
#include "ns3/mobility-model.h" #include "ns3/mobility-model.h"
#include "ns3/double.h"
#include "math.h" #include "math.h"
#include "isl-propagation-loss-model.h" #include "isl-propagation-loss-model.h"
@ -41,6 +20,12 @@ IslPropagationLossModel::GetTypeId (void)
.SetParent<PropagationLossModel> () .SetParent<PropagationLossModel> ()
.SetGroupName ("Leo") .SetGroupName ("Leo")
.AddConstructor<IslPropagationLossModel> () .AddConstructor<IslPropagationLossModel> ()
.AddAttribute ("MaxDistance",
"Cut-off distance for signal propagation",
DoubleValue (1000.0),
MakeDoubleAccessor (&IslPropagationLossModel::SetCutoffDistance,
&IslPropagationLossModel::GetCutoffDistance),
MakeDoubleChecker<double> ())
; ;
return tid; return tid;
} }
@ -53,33 +38,30 @@ IslPropagationLossModel::~IslPropagationLossModel ()
{ {
} }
const double
IslPropagationLossModel::EARTH_RAD_E6 = 6.371;
bool bool
IslPropagationLossModel::GetLos (Ptr<MobilityModel> a, Ptr<MobilityModel> b) IslPropagationLossModel::GetLos (Ptr<MobilityModel> moda, Ptr<MobilityModel> modb)
{ {
// origin of LOS // origin of LOS
Vector3D o = a->GetPosition (); Vector3D oc = moda->GetPosition ();
o = Vector3D (o.x / 1e6, o.y / 1e6, o.z / 1e6); Vector3D bp = modb->GetPosition ();
double ol = o.GetLength ();
// second point of LOS // direction unit vector
Vector3D bp = b->GetPosition (); Vector3D u = Vector3D (bp.x - oc.x, bp.y - oc.y, bp.z - oc.z);
bp = Vector3D (bp.x / 1e6, bp.y / 1e6, bp.z / 1e6);
// unit vector
Vector3D u = Vector3D (o.x-bp.x, o.y-bp.y, o.z-bp.z);
u = Vector3D (u.x / u.GetLength (), u.y / u.GetLength (), u.z / u.GetLength ()); u = Vector3D (u.x / u.GetLength (), u.y / u.GetLength (), u.z / u.GetLength ());
// center point of sphere is 0 double a = u.x*u.x + u.y*u.y + u.z*u.z;
double uo = (u.x*o.x) + (u.y*o.y) + (u.z*o.z); double b = 2.0 * (oc.x*u.x + oc.y*u.y + oc.z*u.z);
double delta = (uo*uo) - (ol*ol - (EARTH_RAD_E6*EARTH_RAD_E6)); double c = (oc.x*oc.x + oc.y*oc.y + oc.z*oc.z) - (LEO_EARTH_RAD*LEO_EARTH_RAD);
double discriminant = b*b - 4*a*c;
//NS_LOG_DEBUG ("a_pos="<<o<<";b_pos"<<bp<<";delta="<<delta); NS_LOG_DEBUG ("a_pos="<<moda->GetPosition ()<<";b_pos"<<modb->GetPosition ()
<<";u="<<u
<<";a="<<a
<<";b="<<b
<<";c="<<c
<<";disc="<<discriminant);
return delta < 0; return discriminant < 0;
} }
double double
@ -87,12 +69,13 @@ IslPropagationLossModel::DoCalcRxPower (double txPowerDbm,
Ptr<MobilityModel> a, Ptr<MobilityModel> a,
Ptr<MobilityModel> b) const Ptr<MobilityModel> b) const
{ {
if (!GetLos (a, b)) if (a->GetDistanceFrom (b) > m_cutoffDistance || !GetLos (a, b))
{ {
NS_LOG_DEBUG ("DROP;"<<a->GetPosition ()<<";"<<b->GetPosition ());
return -1000.0; return -1000.0;
} }
NS_LOG_INFO ("LOS;"<<a->GetPosition ()<<";"<<b->GetPosition ()); NS_LOG_DEBUG ("LOS;"<<a->GetPosition ()<<";"<<b->GetPosition ());
return txPowerDbm; return txPowerDbm;
} }
@ -103,4 +86,15 @@ IslPropagationLossModel::DoAssignStreams (int64_t stream)
return 0; return 0;
} }
void
IslPropagationLossModel::SetCutoffDistance (double d)
{
m_cutoffDistance = d * 1000.0;
}
double
IslPropagationLossModel::GetCutoffDistance () const
{
return m_cutoffDistance / 1000.0;
}
}; };

34
model/isl-propagation-loss-model.h
View file

@ -1,26 +1,4 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2005,2006,2007 INRIA
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
* Contributions: Timo Bingmann <timo.bingmann@student.kit.edu>
* Contributions: Gary Pei <guangyu.pei@boeing.com> for fixed RSS
* Contributions: Tom Hewer <tomhewer@mac.com> for two ray ground model
* Pavel Boyko <boyko@iitp.ru> for matrix
*/
#ifndef ISL_PROPAGATION_LOSS_MODEL_H #ifndef ISL_PROPAGATION_LOSS_MODEL_H
#define ISL_PROPAGATION_LOSS_MODEL_H #define ISL_PROPAGATION_LOSS_MODEL_H
@ -28,13 +6,13 @@
#include <ns3/object.h> #include <ns3/object.h>
#include <ns3/propagation-loss-model.h> #include <ns3/propagation-loss-model.h>
#define LEO_EARTH_RAD 6.371009e6
namespace ns3 { namespace ns3 {
class IslPropagationLossModel : public PropagationLossModel class IslPropagationLossModel : public PropagationLossModel
{ {
public: public:
static const double EARTH_RAD_E6;
static TypeId GetTypeId (void); static TypeId GetTypeId (void);
IslPropagationLossModel (); IslPropagationLossModel ();
virtual ~IslPropagationLossModel (); virtual ~IslPropagationLossModel ();
@ -50,6 +28,14 @@ public:
*/ */
static bool GetLos (Ptr<MobilityModel> a, Ptr<MobilityModel> b); static bool GetLos (Ptr<MobilityModel> a, Ptr<MobilityModel> b);
private: private:
/**
* Cutoff distance for signal
*/
double m_cutoffDistance;
void SetCutoffDistance (double d);
double GetCutoffDistance () const;
/** /**
* Returns the Rx Power taking into account only the particular * Returns the Rx Power taking into account only the particular
* PropagationLossModel. * PropagationLossModel.

12
model/leo-propagation-loss-model.cc
View file

@ -103,26 +103,26 @@ LeoPropagationLossModel::DoCalcRxPower (double txPowerDbm,
Ptr<MobilityModel> b) const Ptr<MobilityModel> b) const
{ {
double distance = a->GetDistanceFrom (b); double distance = a->GetDistanceFrom (b);
double angle = GetAngle (a, b);
double rxc = txPowerDbm - m_atmosphericLoss - m_freeSpacePathLoss - m_linkMargin;
NS_LOG_DEBUG ("LEO propagation: a=" << a->GetPosition () << " b=" << b->GetPosition () << " m_cutOff="<<m_cutoffDistance<<" m_angle="<<m_elevationAngle<<" dist=" << distance << "angle=" << angle << "rxc=" << rxc);
if (distance > m_cutoffDistance) if (distance > m_cutoffDistance)
{ {
NS_LOG_DEBUG ("LEO DROP DISTANCE: " << distance); NS_LOG_DEBUG ("LEO DROP distance: a=" << a->GetPosition () << " b=" << b->GetPosition () << " m_cutOff="<<m_cutoffDistance<<" dist=" << distance);
return -1000.0; return -1000.0;
} }
double angle = GetAngle (a, b);
if (angle > m_elevationAngle / 2.0) if (angle > m_elevationAngle / 2.0)
{ {
NS_LOG_DEBUG ("LEO DROP ANGLE: " << angle <<"; " << distance); NS_LOG_DEBUG ("LEO DROP angle: a=" << a->GetPosition () << " b=" << b->GetPosition () << " m_cutOff="<<m_cutoffDistance<<" m_angle="<<m_elevationAngle<<" dist=" << distance << "angle=" << angle);
return -1000.0; return -1000.0;
} }
// txPowerDbm includes tx antenna gain and losses // txPowerDbm includes tx antenna gain and losses
// receiver loss and gain added at net device // receiver loss and gain added at net device
// P_{RX} = P_{TX} + G_{TX} - L_{TX} - L_{FS} - L_M + G_{RX} - L_{RX} // P_{RX} = P_{TX} + G_{TX} - L_{TX} - L_{FS} - L_M + G_{RX} - L_{RX}
double rxc = txPowerDbm - m_atmosphericLoss - m_freeSpacePathLoss - m_linkMargin;
NS_LOG_INFO ("LEO TRANSMIT: angle=" << angle <<";distance=" << distance << ";rxc=" << rxc);
return rxc; return rxc;
} }