A Discrete-Event Network Simulator
API
lte-test-fdmt-ff-mac-scheduler.cc
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1/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2/*
3 * Copyright (c) 2011 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
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: Marco Miozzo <marco.miozzo@cttc.es>,
19 * Nicola Baldo <nbaldo@cttc.es>
20 * Dizhi Zhou <dizhi.zhou@gmail.com>
21 */
22
23#include <iostream>
24#include <sstream>
25#include <string>
26#include <ns3/object.h>
27#include <ns3/spectrum-interference.h>
28#include <ns3/spectrum-error-model.h>
29#include <ns3/log.h>
30#include <ns3/test.h>
31#include <ns3/simulator.h>
32#include <ns3/packet.h>
33#include <ns3/ptr.h>
34#include "ns3/radio-bearer-stats-calculator.h"
35#include <ns3/constant-position-mobility-model.h>
36#include <ns3/ff-mac-scheduler.h>
38#include <ns3/eps-bearer.h>
39#include <ns3/node-container.h>
40#include <ns3/mobility-helper.h>
41#include <ns3/net-device-container.h>
42#include <ns3/lte-ue-net-device.h>
43#include <ns3/lte-enb-net-device.h>
44#include <ns3/lte-ue-rrc.h>
45#include <ns3/lte-helper.h>
46#include "ns3/string.h"
47#include "ns3/double.h"
48#include <ns3/lte-enb-phy.h>
49#include <ns3/lte-ue-phy.h>
50#include <ns3/boolean.h>
51#include <ns3/enum.h>
52
53using namespace ns3;
54
55NS_LOG_COMPONENT_DEFINE ("LenaTestFdMtFfMacScheduler");
56
58 : TestSuite ("lte-fdmt-ff-mac-scheduler", SYSTEM)
59{
60 NS_LOG_INFO ("creating LenaTestFdMtFfMacSchedulerSuite");
61
62 bool errorModel = false;
63
64 //Test Case : AMC works in FDMT
65
66 //Note: here the MCS is calculated by the narrowband CQI
67
68 // DOWNLINK - DISTANCE 0 -> MCS 28 -> Itbs 26 (from table 7.1.7.2.1-1 of 36.213)
69 // 1 user -> 24 PRB at Itbs 26 -> 2196 -> 2196000 bytes/sec for one UE; 0 bytes/sec for other UEs
70 // 3 users -> 2196000 among 3 users -> 2196000 bytes/sec for one UE; 0 bytes/sec for other UEs
71 // 6 users -> 2196000 among 6 users -> 2196000 bytes/sec for one UE; 0 bytes/sec for other UEs
72 // 12 users -> 2196000 among 12 users -> 2196000 bytes/sec for one UE; 0 bytes/sec for other UEs
73 // UPLINK- DISTANCE 0 -> MCS 28 -> Itbs 26 (from table 7.1.7.2.1-1 of 36.213)
74 // 1 user -> 25 PRB at Itbs 26 -> 2292 -> 2292000 bytes/sec
75 // 3 users -> 8 PRB at Itbs 26 -> 749 -> 749000 bytes/sec
76 // 6 users -> 4 PRB at Itbs 26 -> 373 -> 373000 bytes/sec
77 // after the patch enforcing min 3 PRBs per UE:
78 // 12 users -> 3 PRB at Itbs 26 -> 277 bytes * 8/12 UE/TTI -> 184670 bytes/sec
79 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (1,0,2196000,2292000, errorModel), TestCase::EXTENSIVE);
80 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (3,0,2196000,749000,errorModel), TestCase::QUICK);
81 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (6,0,2196000,373000, errorModel), TestCase::EXTENSIVE);
82 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (12,0,2196000,184670, errorModel), TestCase::EXTENSIVE);
83
84 // DOWNLINK - DISTANCE 4800 -> MCS 22 -> Itbs 20 (from table 7.1.7.2.1-1 of 36.213)
85 // 1 user -> 24 PRB at Itbs 20 -> 1383 -> 1383000 byte/secfor one UE; 0 bytes/sec for other UEs
86 // 3 users -> 1383000 among 3 users -> 1383000 bytes/sec for one UE; 0 bytes/sec for other UEs
87 // 6 users -> 1383000 among 6 users -> 1383000 bytes/sec for one UE; 0 bytes/sec for other UEs
88 // 12 users -> 1383000 among 12 users -> 1383000 bytes/sec for one UE; 0 bytes/sec for other UEs
89 // UPLINK - DISTANCE 4800 -> MCS 14 -> Itbs 13 (from table 7.1.7.2.1-1 of 36.213)
90 // 1 user -> 25 PRB at Itbs 13 -> 807 -> 807000 bytes/sec
91 // 3 users -> 8 PRB at Itbs 13 -> 253 -> 253000 bytes/sec
92 // 6 users -> 4 PRB at Itbs 13 -> 125 -> 125000 bytes/sec
93 // after the patch enforcing min 3 PRBs per UE:
94 // 12 users -> 3 PRB at Itbs 13 -> 93 bytes * 8/12 UE/TTI -> 62000 bytes/sec
95 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (1,4800,1383000,807000,errorModel), TestCase::EXTENSIVE);
96 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (3,4800,1383000,253000,errorModel), TestCase::EXTENSIVE);
97 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (6,4800,1383000,125000,errorModel), TestCase::EXTENSIVE);
98 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (12,4800,1383000,62000,errorModel), TestCase::EXTENSIVE);
99
100
101 // DOWNLINK - DISTANCE 6000 -> MCS 20 -> Itbs 18 (from table 7.1.7.2.1-1 of 36.213)
102 // 1 user -> 24 PRB at Itbs 18 -> 1191 -> 1191000 byte/sec for one UE; 0 bytes/sec for other UEs
103 // 3 users -> 1191000 among 3 users -> 1191000 bytes/sec for one UE; 0 bytes/sec for other UEs
104 // 6 users -> 1191000 among 6 users -> 1191000 bytes/sec for one UE; 0 bytes/sec for other UEs
105 // 12 users ->1191000 among 12 users -> 1191000 bytes/sec for one UE; 0 bytes/sec for other UEs
106 // UPLINK - DISTANCE 6000 -> MCS 12 -> Itbs 11 (from table 7.1.7.2.1-1 of 36.213)
107 // 1 user -> 25 PRB at Itbs 11 -> 621 -> 621000 bytes/sec
108 // 3 users -> 8 PRB at Itbs 11 -> 201 -> 201000 bytes/sec
109 // 6 users -> 4 PRB at Itbs 11 -> 97 -> 97000 bytes/sec
110 // after the patch enforcing min 3 PRBs per UE:
111 // 12 users -> 3 PRB at Itbs 11 -> 73 bytes * 8/12 UE/TTI -> 48667 bytes/sec
112 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (1,6000,1191000,621000, errorModel), TestCase::EXTENSIVE);
113 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (3,6000,1191000,201000, errorModel), TestCase::EXTENSIVE);
114 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (6,6000,1191000,97000, errorModel), TestCase::EXTENSIVE);
115 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (12,6000,1191000,48667, errorModel), TestCase::EXTENSIVE);
116
117 // DOWNLINK - DISTANCE 10000 -> MCS 14 -> Itbs 13 (from table 7.1.7.2.1-1 of 36.213)
118 // 1 user -> 24 PRB at Itbs 13 -> 775 -> 775000 byte/sec for one UE; 0 bytes/sec for other UEs
119 // 3 users -> 775000 among 3 users -> 775000 bytes/sec for one UE; 0 bytes/sec for other UEs
120 // 6 users -> 775000 among 6 users -> 775000 bytes/sec for one UE; 0 bytes/sec for other UEs
121 // 12 users -> 775000 among 12 users -> 775000 bytes/sec for one UE; 0 bytes/sec for other UEs
122 // UPLINK - DISTANCE 10000 -> MCS 8 -> Itbs 8 (from table 7.1.7.2.1-1 of 36.213)
123 // 1 user -> 24 PRB at Itbs 8 -> 437 -> 437000 bytes/sec
124 // 3 users -> 8 PRB at Itbs 8 -> 137 -> 137000 bytes/sec
125 // 6 users -> 4 PRB at Itbs 8 -> 67 -> 67000 bytes/sec
126 // after the patch enforcing min 3 PRBs per UE:
127 // 12 users -> 3 PRB at Itbs 8 -> 49 bytes * 8/12 UE/TTI -> 32667 bytes/sec
128 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (1,10000,775000,437000,errorModel), TestCase::EXTENSIVE);
129 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (3,10000,775000,137000,errorModel), TestCase::EXTENSIVE);
130 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (6,10000,775000,67000,errorModel), TestCase::EXTENSIVE);
131 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (12,10000,775000,32667,errorModel), TestCase::EXTENSIVE);
132
133 // DONWLINK - DISTANCE 20000 -> MCS 8 -> Itbs 8 (from table 7.1.7.2.1-1 of 36.213)
134 // 1 user -> 24 PRB at Itbs 8 -> 421 -> 421000 bytes/sec for one UE; 0 bytes/sec for other UEs
135 // 3 users -> 421000 among 3 users -> 421000 bytes/sec for one UE; 0 bytes/sec for other UEs
136 // 6 users -> 421000 among 6 users -> 421000 bytes/sec for one UE; 0 bytes/sec for other UEs
137 // 12 users -> 421000 among 12 users -> 421000 bytes/sec for one UE; 0 bytes/sec for other UEs
138 // UPLINK - DISTANCE 20000 -> MCS 2 -> Itbs 2 (from table 7.1.7.2.1-1 of 36.213)
139 // 1 user -> 25 PRB at Itbs 2 -> 233 -> 137000 bytes/sec
140 // 3 users -> 8 PRB at Itbs 2 -> 69 -> 41000 bytes/sec
141 // 6 users -> 4 PRB at Itbs 2 -> 32 -> 22000 bytes/sec
142 // after the patch enforcing min 3 PRBs per UE:
143 // 12 users -> 3 PRB at Itbs 2 -> 26 bytes * 8/12 UE/TTI -> 12000 bytes/sec
144 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (1,20000,421000,137000,errorModel), TestCase::EXTENSIVE);
145 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (3,20000,421000,41000,errorModel), TestCase::EXTENSIVE);
146 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (6,20000,421000,22000,errorModel), TestCase::EXTENSIVE);
147 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (12,20000,421000,12000,errorModel), TestCase::EXTENSIVE);
148
149 // DOWNLINK - DISTANCE 100000 -> CQI == 0 -> out of range -> 0 bytes/sec
150 // UPLINK - DISTANCE 100000 -> CQI == 0 -> out of range -> 0 bytes/sec
151 AddTestCase (new LenaFdMtFfMacSchedulerTestCase (1,100000,0,0,errorModel), TestCase::QUICK);
152}
153
155
156
157// --------------- T E S T - C A S E ------------------------------
158
159std::string
161{
162 std::ostringstream oss;
163 oss << nUser << " UEs, distance " << dist << " m";
164 return oss.str ();
165}
166
167LenaFdMtFfMacSchedulerTestCase::LenaFdMtFfMacSchedulerTestCase (uint16_t nUser, double dist, double thrRefDl, double thrRefUl, bool errorModelEnabled)
168 : TestCase (BuildNameString (nUser, dist)),
169 m_nUser (nUser),
170 m_dist (dist),
171 m_thrRefDl (thrRefDl),
172 m_thrRefUl (thrRefUl),
173 m_errorModelEnabled (errorModelEnabled)
174{
175}
176
178{
179}
180
181
182void
184{
185
186 NS_LOG_FUNCTION (this << m_nUser << m_dist);
187
189 {
190 Config::SetDefault ("ns3::LteSpectrumPhy::CtrlErrorModelEnabled", BooleanValue (false));
191 Config::SetDefault ("ns3::LteSpectrumPhy::DataErrorModelEnabled", BooleanValue (false));
192 }
193
194 Config::SetDefault ("ns3::LteHelper::UseIdealRrc", BooleanValue (true));
195 Config::SetDefault ("ns3::MacStatsCalculator::DlOutputFilename", StringValue (CreateTempDirFilename ("DlMacStats.txt")));
196 Config::SetDefault ("ns3::MacStatsCalculator::UlOutputFilename", StringValue (CreateTempDirFilename ("UlMacStats.txt")));
197 Config::SetDefault ("ns3::RadioBearerStatsCalculator::DlRlcOutputFilename", StringValue (CreateTempDirFilename ("DlRlcStats.txt")));
198 Config::SetDefault ("ns3::RadioBearerStatsCalculator::UlRlcOutputFilename", StringValue (CreateTempDirFilename ("UlRlcStats.txt")));
199
204 Ptr<LteHelper> lteHelper = CreateObject<LteHelper> ();
205 lteHelper->SetAttribute ("PathlossModel", StringValue ("ns3::FriisSpectrumPropagationLossModel"));
206
207 // Create Nodes: eNodeB and UE
208 NodeContainer enbNodes;
209 NodeContainer ueNodes;
210 enbNodes.Create (1);
211 ueNodes.Create (m_nUser);
212
213 // Install Mobility Model
215 mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
216 mobility.Install (enbNodes);
217 mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
218 mobility.Install (ueNodes);
219
220 // Create Devices and install them in the Nodes (eNB and UE)
221 NetDeviceContainer enbDevs;
222 NetDeviceContainer ueDevs;
223 lteHelper->SetSchedulerType ("ns3::FdMtFfMacScheduler");
224 lteHelper->SetSchedulerAttribute ("UlCqiFilter", EnumValue (FfMacScheduler::SRS_UL_CQI));
225 enbDevs = lteHelper->InstallEnbDevice (enbNodes);
226 ueDevs = lteHelper->InstallUeDevice (ueNodes);
227
228 // Attach a UE to a eNB
229 lteHelper->Attach (ueDevs, enbDevs.Get (0));
230
231 // Activate an EPS bearer
232 enum EpsBearer::Qci q = EpsBearer::GBR_CONV_VOICE;
233 EpsBearer bearer (q);
234 lteHelper->ActivateDataRadioBearer (ueDevs, bearer);
235
236
237 Ptr<LteEnbNetDevice> lteEnbDev = enbDevs.Get (0)->GetObject<LteEnbNetDevice> ();
238 Ptr<LteEnbPhy> enbPhy = lteEnbDev->GetPhy ();
239 enbPhy->SetAttribute ("TxPower", DoubleValue (30.0));
240 enbPhy->SetAttribute ("NoiseFigure", DoubleValue (5.0));
241
242 // Set UEs' position and power
243 for (int i = 0; i < m_nUser; i++)
244 {
246 mm->SetPosition (Vector (m_dist, 0.0, 0.0));
247 Ptr<LteUeNetDevice> lteUeDev = ueDevs.Get (i)->GetObject<LteUeNetDevice> ();
248 Ptr<LteUePhy> uePhy = lteUeDev->GetPhy ();
249 uePhy->SetAttribute ("TxPower", DoubleValue (23.0));
250 uePhy->SetAttribute ("NoiseFigure", DoubleValue (9.0));
251 }
252
253
254 double statsStartTime = 0.300; // need to allow for RRC connection establishment + SRS
255 double statsDuration = 0.6;
256 double tolerance = 0.1;
257 Simulator::Stop (Seconds (statsStartTime + statsDuration - 0.000001));
258
259 lteHelper->EnableMacTraces ();
260 lteHelper->EnableRlcTraces ();
261 Ptr<RadioBearerStatsCalculator> rlcStats = lteHelper->GetRlcStats ();
262 rlcStats->SetAttribute ("StartTime", TimeValue (Seconds (statsStartTime)));
263 rlcStats->SetAttribute ("EpochDuration", TimeValue (Seconds (statsDuration)));
264
265
266 Simulator::Run ();
267
271 NS_LOG_INFO ("DL - Test with " << m_nUser << " user(s) at distance " << m_dist);
272 std::vector <uint64_t> dlDataRxed;
273 for (int i = 0; i < m_nUser; i++)
274 {
275 // get the imsi
276 uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
277 uint8_t lcId = 3;
278 dlDataRxed.push_back (rlcStats->GetDlRxData (imsi, lcId));
279 NS_LOG_INFO ("\tUser " << i << " imsi " << imsi << " bytes rxed " << (double)dlDataRxed.at (i) << " thr " << (double)dlDataRxed.at (i) / statsDuration << " ref " << m_thrRefDl);
280 }
281
287 uint8_t found = 0;
288 for (int i = 0; i < m_nUser; i++)
289 {
290 double throughput = (double)dlDataRxed.at (i) / statsDuration;
291 if (throughput != 0 && found == 0)
292 {
293 NS_TEST_ASSERT_MSG_EQ_TOL (throughput, m_thrRefDl, m_thrRefDl * tolerance, " Unfair Throughput!");
294 found = 1;
295 }
296 else if (throughput != 0 && found == 1)
297 {
298 NS_TEST_ASSERT_MSG_EQ_TOL (0, m_thrRefDl, m_thrRefDl * tolerance, " Unfair Throughput!");
299 }
300 else
301 NS_TEST_ASSERT_MSG_EQ_TOL (throughput, 0, 0, " Unfair Throughput!");
302 }
303
307 NS_LOG_INFO ("UL - Test with " << m_nUser << " user(s) at distance " << m_dist);
308 std::vector <uint64_t> ulDataRxed;
309 for (int i = 0; i < m_nUser; i++)
310 {
311 // get the imsi
312 uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
313 // get the lcId
314 uint8_t lcId = 3;
315 ulDataRxed.push_back (rlcStats->GetUlRxData (imsi, lcId));
316 NS_LOG_INFO ("\tUser " << i << " imsi " << imsi << " bytes rxed " << (double)ulDataRxed.at (i) << " thr " << (double)ulDataRxed.at (i) / statsDuration << " ref " << m_thrRefUl);
317 }
324 for (int i = 0; i < m_nUser; i++)
325 {
326 NS_TEST_ASSERT_MSG_EQ_TOL ((double)ulDataRxed.at (i) / statsDuration, m_thrRefUl, m_thrRefUl * tolerance, " Unfair Throughput!");
327 }
328 Simulator::Destroy ();
329
330}
331
This system test program creates different test cases with a single eNB and several UEs,...
double m_thrRefDl
DL throughput reference.
LenaFdMtFfMacSchedulerTestCase(uint16_t nUser, double dist, double thrRefDl, double thrRefUl, bool errorModelEnabled)
Constructor.
static std::string BuildNameString(uint16_t nUser, double dist)
Builds the test name string based on provided parameter values.
double m_dist
distance between the nodes
virtual void DoRun(void)
Implementation to actually run this TestCase.
double m_thrRefUl
UL throughput reference.
Test suite for LenaFdMtFfMacSchedulerTestCase test case.
AttributeValue implementation for Boolean.
Definition: boolean.h:37
Mobility model for which the current position does not change once it has been set and until it is se...
This class can be used to hold variables of floating point type such as 'double' or 'float'.
Definition: double.h:41
Hold variables of type enum.
Definition: enum.h:55
This class contains the specification of EPS Bearers.
Definition: eps-bearer.h:92
Qci
QoS Class Indicator.
Definition: eps-bearer.h:107
The eNodeB device implementation.
Ptr< LteEnbPhy > GetPhy(void) const
void SetSchedulerAttribute(std::string n, const AttributeValue &v)
Set an attribute for the scheduler to be created.
Definition: lte-helper.cc:293
NetDeviceContainer InstallEnbDevice(NodeContainer c)
Create a set of eNodeB devices.
Definition: lte-helper.cc:474
Ptr< RadioBearerStatsCalculator > GetRlcStats(void)
Definition: lte-helper.cc:1572
void SetSchedulerType(std::string type)
Set the type of scheduler to be used by eNodeB devices.
Definition: lte-helper.cc:279
void Attach(NetDeviceContainer ueDevices)
Enables automatic attachment of a set of UE devices to a suitable cell using Idle mode initial cell s...
Definition: lte-helper.cc:959
void EnableRlcTraces(void)
Enable trace sinks for RLC layer.
Definition: lte-helper.cc:1435
void ActivateDataRadioBearer(NetDeviceContainer ueDevices, EpsBearer bearer)
Activate a Data Radio Bearer on a given UE devices (for LTE-only simulation).
Definition: lte-helper.cc:1313
NetDeviceContainer InstallUeDevice(NodeContainer c)
Create a set of UE devices.
Definition: lte-helper.cc:489
void EnableMacTraces(void)
Enable trace sinks for MAC layer.
Definition: lte-helper.cc:1529
The LteUeNetDevice class implements the UE net device.
Helper class used to assign positions and mobility models to nodes.
holds a vector of ns3::NetDevice pointers
Ptr< NetDevice > Get(uint32_t i) const
Get the Ptr<NetDevice> stored in this container at a given index.
keep track of a set of node pointers.
void Create(uint32_t n)
Create n nodes and append pointers to them to the end of this NodeContainer.
Ptr< Node > Get(uint32_t i) const
Get the Ptr<Node> stored in this container at a given index.
void SetAttribute(std::string name, const AttributeValue &value)
Set a single attribute, raising fatal errors if unsuccessful.
Definition: object-base.cc:256
Ptr< T > GetObject(void) const
Get a pointer to the requested aggregated Object.
Definition: object.h:470
Hold variables of type string.
Definition: string.h:41
encapsulates test code
Definition: test.h:994
void AddTestCase(TestCase *testCase, TestDuration duration=QUICK)
Add an individual child TestCase to this test suite.
Definition: test.cc:299
std::string CreateTempDirFilename(std::string filename)
Construct the full path to a file in a temporary directory.
Definition: test.cc:430
A suite of tests to run.
Definition: test.h:1188
AttributeValue implementation for Time.
Definition: nstime.h:1308
void SetDefault(std::string name, const AttributeValue &value)
Definition: config.cc:849
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:205
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition: log.h:281
#define NS_TEST_ASSERT_MSG_EQ_TOL(actual, limit, tol, msg)
Test that actual and expected (limit) values are equal to plus or minus some tolerance and report and...
Definition: test.h:323
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1244
static LenaTestFdMtFfMacSchedulerSuite lenaTestFdMtFfMacSchedulerSuite
Every class exported by the ns3 library is enclosed in the ns3 namespace.
mobility
Definition: third.py:107