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propagation-delay-model.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2005,2006,2007 INRIA
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
19  */
20 #include "propagation-delay-model.h"
21 #include "ns3/mobility-model.h"
22 #include "ns3/double.h"
23 #include "ns3/string.h"
24 #include "ns3/pointer.h"
25 
26 namespace ns3 {
27 
28 NS_OBJECT_ENSURE_REGISTERED (PropagationDelayModel);
29 
30 TypeId
31 PropagationDelayModel::GetTypeId (void)
32 {
33  static TypeId tid = TypeId ("ns3::PropagationDelayModel")
34  .SetParent<Object> ()
35  ;
36  return tid;
37 }
38 
39 PropagationDelayModel::~PropagationDelayModel ()
40 {
41 }
42 
43 int64_t
44 PropagationDelayModel::AssignStreams (int64_t stream)
45 {
46  return DoAssignStreams (stream);
47 }
48 
49 // ------------------------------------------------------------------------- //
50 
51 NS_OBJECT_ENSURE_REGISTERED (RandomPropagationDelayModel);
52 
53 TypeId
54 RandomPropagationDelayModel::GetTypeId (void)
55 {
56  static TypeId tid = TypeId ("ns3::RandomPropagationDelayModel")
57  .SetParent<PropagationDelayModel> ()
58  .AddConstructor<RandomPropagationDelayModel> ()
59  .AddAttribute ("Variable",
60  "The random variable which generates random delays (s).",
61  StringValue ("ns3::UniformRandomVariable"),
62  MakePointerAccessor (&RandomPropagationDelayModel::m_variable),
63  MakePointerChecker<RandomVariableStream> ())
64  ;
65  return tid;
66 }
67 
68 RandomPropagationDelayModel::RandomPropagationDelayModel ()
69 {
70 }
71 RandomPropagationDelayModel::~RandomPropagationDelayModel ()
72 {
73 }
74 Time
75 RandomPropagationDelayModel::GetDelay (Ptr<MobilityModel> a, Ptr<MobilityModel> b) const
76 {
77  return Seconds (m_variable->GetValue ());
78 }
79 
80 int64_t
81 RandomPropagationDelayModel::DoAssignStreams (int64_t stream)
82 {
83  m_variable->SetStream (stream);
84  return 1;
85 }
86 
87 NS_OBJECT_ENSURE_REGISTERED (ConstantSpeedPropagationDelayModel);
88 
89 TypeId
90 ConstantSpeedPropagationDelayModel::GetTypeId (void)
91 {
92  static TypeId tid = TypeId ("ns3::ConstantSpeedPropagationDelayModel")
93  .SetParent<PropagationDelayModel> ()
94  .AddConstructor<ConstantSpeedPropagationDelayModel> ()
95  .AddAttribute ("Speed", "The speed (m/s)",
96  DoubleValue (300000000.0),
97  MakeDoubleAccessor (&ConstantSpeedPropagationDelayModel::m_speed),
98  MakeDoubleChecker<double> ())
99  ;
100  return tid;
101 }
102 
103 ConstantSpeedPropagationDelayModel::ConstantSpeedPropagationDelayModel ()
104 {
105 }
106 Time
107 ConstantSpeedPropagationDelayModel::GetDelay (Ptr<MobilityModel> a, Ptr<MobilityModel> b) const
108 {
109  double distance = a->GetDistanceFrom (b);
110  double seconds = distance / m_speed;
111  return Seconds (seconds);
112 }
113 void
114 ConstantSpeedPropagationDelayModel::SetSpeed (double speed)
115 {
116  m_speed = speed;
117 }
118 double
119 ConstantSpeedPropagationDelayModel::GetSpeed (void) const
120 {
121  return m_speed;
122 }
123 
124 int64_t
125 ConstantSpeedPropagationDelayModel::DoAssignStreams (int64_t stream)
126 {
127  return 0;
128 }
129 
130 
131 } // namespace ns3