propagation-delay-model.cc

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/*
 * 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>
 */
#include "propagation-delay-model.h"
 
#include "ns3/double.h"
#include "ns3/mobility-model.h"
#include "ns3/pointer.h"
#include "ns3/string.h"
 
namespace ns3
{
 
NS_OBJECT_ENSURE_REGISTERED(PropagationDelayModel);
 
TypeId
PropagationDelayModel::GetTypeId()
{
    static TypeId tid =
        TypeId("ns3::PropagationDelayModel").SetParent<Object>().SetGroupName("Propagation");
    return tid;
}
 
PropagationDelayModel::~PropagationDelayModel()
{
}
 
int64_t
PropagationDelayModel::AssignStreams(int64_t stream)
{
    return DoAssignStreams(stream);
}
 
// ------------------------------------------------------------------------- //
 
NS_OBJECT_ENSURE_REGISTERED(RandomPropagationDelayModel);
 
TypeId
RandomPropagationDelayModel::GetTypeId()
{
    static TypeId tid =
        TypeId("ns3::RandomPropagationDelayModel")
            .SetParent<PropagationDelayModel>()
            .SetGroupName("Propagation")
            .AddConstructor<RandomPropagationDelayModel>()
            .AddAttribute("Variable",
                          "The random variable which generates random delays (s).",
                          StringValue("ns3::UniformRandomVariable"),
                          MakePointerAccessor(&RandomPropagationDelayModel::m_variable),
                          MakePointerChecker<RandomVariableStream>());
    return tid;
}
 
RandomPropagationDelayModel::RandomPropagationDelayModel()
{
}
 
RandomPropagationDelayModel::~RandomPropagationDelayModel()
{
}
 
Time
RandomPropagationDelayModel::GetDelay(Ptr<MobilityModel> a, Ptr<MobilityModel> b) const
{
    return Seconds(m_variable->GetValue());
}
 
int64_t
RandomPropagationDelayModel::DoAssignStreams(int64_t stream)
{
    m_variable->SetStream(stream);
    return 1;
}
 
NS_OBJECT_ENSURE_REGISTERED(ConstantSpeedPropagationDelayModel);
 
TypeId
ConstantSpeedPropagationDelayModel::GetTypeId()
{
    static TypeId tid =
        TypeId("ns3::ConstantSpeedPropagationDelayModel")
            .SetParent<PropagationDelayModel>()
            .SetGroupName("Propagation")
            .AddConstructor<ConstantSpeedPropagationDelayModel>()
            .AddAttribute("Speed",
                          "The propagation speed (m/s) in the propagation medium being considered. "
                          "The default value is the propagation speed of light in the vacuum.",
                          DoubleValue(299792458),
                          MakeDoubleAccessor(&ConstantSpeedPropagationDelayModel::m_speed),
                          MakeDoubleChecker<double>());
    return tid;
}
 
ConstantSpeedPropagationDelayModel::ConstantSpeedPropagationDelayModel()
{
}
 
Time
ConstantSpeedPropagationDelayModel::GetDelay(Ptr<MobilityModel> a, Ptr<MobilityModel> b) const
{
    double distance = a->GetDistanceFrom(b);
    double seconds = distance / m_speed;
    return Seconds(seconds);
}
 
void
ConstantSpeedPropagationDelayModel::SetSpeed(double speed)
{
    m_speed = speed;
}
 
double
ConstantSpeedPropagationDelayModel::GetSpeed() const
{
    return m_speed;
}
 
int64_t
ConstantSpeedPropagationDelayModel::DoAssignStreams(int64_t stream)
{
    return 0;
}
 
} // namespace ns3