A Discrete-Event Network Simulator
API
lte-test-tdmt-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 ("LenaTestTdMtFfMacScheduler");
56
58 : TestSuite ("lte-tdmt-ff-mac-scheduler", SYSTEM)
59{
60 NS_LOG_INFO ("creating LenaTestTdMtFfMacSchedulerSuite");
61
62 bool errorModel = false;
63
64 //Test Case : AMC works in TDMT
65
66 //Note: here the MCS is calculated by the wideband 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 LenaTdMtFfMacSchedulerTestCase (1,0,2196000,2292000, errorModel), TestCase::EXTENSIVE);
80 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (3,0,2196000,749000,errorModel), TestCase::QUICK);
81 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (6,0,2196000,373000, errorModel), TestCase::EXTENSIVE);
82 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (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 bytes/sec for 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 LenaTdMtFfMacSchedulerTestCase (1,4800,1383000,807000,errorModel), TestCase::EXTENSIVE);
96 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (3,4800,1383000,253000,errorModel), TestCase::EXTENSIVE);
97 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (6,4800,1383000,125000,errorModel), TestCase::EXTENSIVE);
98 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (12,4800,1383000,62000,errorModel), TestCase::EXTENSIVE);
99
100 // DOWNLINK - DISTANCE 6000 -> MCS 20 -> Itbs 18 (from table 7.1.7.2.1-1 of 36.213)
101 // 1 user -> 24 PRB at Itbs 18 -> 1191 -> 1191000 byte/sec for one UE; 0 bytes/sec for other UEs
102 // 3 users -> 1191000 among 3 users -> 1191000 bytes/sec for one UE; 0 bytes/sec for other UEs
103 // 6 users -> 1191000 among 6 users -> 1191000 bytes/sec for one UE; 0 bytes/sec for other UEs
104 // 12 users ->1191000 among 12 users -> 1191000 bytes/sec for one UE; 0 bytes/sec for other UEs
105 // UPLINK - DISTANCE 6000 -> MCS 12 -> Itbs 11 (from table 7.1.7.2.1-1 of 36.213)
106 // 1 user -> 25 PRB at Itbs 11 -> 621 -> 621000 bytes/sec
107 // 3 users -> 8 PRB at Itbs 11 -> 201 -> 201000 bytes/sec
108 // 6 users -> 4 PRB at Itbs 11 -> 97 -> 97000 bytes/sec
109 // after the patch enforcing min 3 PRBs per UE:
110 // 12 users -> 3 PRB at Itbs 11 -> 73 bytes * 8/12 UE/TTI -> 48667 bytes/sec
111 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (1,6000,1191000,621000, errorModel), TestCase::EXTENSIVE);
112 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (3,6000,1191000,201000, errorModel), TestCase::EXTENSIVE);
113 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (6,6000,1191000,97000, errorModel), TestCase::EXTENSIVE);
114 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (12,6000,1191000,48667, errorModel), TestCase::EXTENSIVE);
115
116 // DOWNLINK - DISTANCE 10000 -> MCS 14 -> Itbs 13 (from table 7.1.7.2.1-1 of 36.213)
117 // 1 user -> 24 PRB at Itbs 13 -> 775 -> 775000 byte/sec for one UE; 0 bytes/sec for other UEs
118 // 3 users -> 775000 among 3 users -> 775000 bytes/sec for one UE; 0 bytes/sec for other UEs
119 // 6 users -> 775000 among 6 users -> 775000 bytes/sec for one UE; 0 bytes/sec for other UEs
120 // 12 users -> 775000 among 12 users -> 775000 bytes/sec for one UE; 0 bytes/sec for other UEs
121 // UPLINK - DISTANCE 10000 -> MCS 8 -> Itbs 8 (from table 7.1.7.2.1-1 of 36.213)
122 // 1 user -> 24 PRB at Itbs 8 -> 437 -> 437000 bytes/sec
123 // 3 users -> 8 PRB at Itbs 8 -> 137 -> 137000 bytes/sec
124 // 6 users -> 4 PRB at Itbs 8 -> 67 -> 67000 bytes/sec
125 // after the patch enforcing min 3 PRBs per UE:
126 // 12 users -> 3 PRB at Itbs 8 -> 49 bytes * 8/12 UE/TTI -> 32667 bytes/sec
127 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (1,10000,775000,437000,errorModel), TestCase::EXTENSIVE);
128 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (3,10000,775000,137000,errorModel), TestCase::EXTENSIVE);
129 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (6,10000,775000,67000,errorModel), TestCase::EXTENSIVE);
130 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (12,10000,775000,32667,errorModel), TestCase::EXTENSIVE);
131
132 // DONWLINK - DISTANCE 20000 -> MCS 8 -> Itbs 8 (from table 7.1.7.2.1-1 of 36.213)
133 // 1 user -> 24 PRB at Itbs 8 -> 421 -> 421000 bytes/sec for one UE; 0 bytes/sec for other UEs
134 // 3 users -> 421000 among 3 users -> 421000 bytes/sec for one UE; 0 bytes/sec for other UEs
135 // 6 users -> 421000 among 6 users -> 421000 bytes/sec for one UE; 0 bytes/sec for other UEs
136 // 12 users -> 421000 among 12 users -> 421000 bytes/sec for one UE; 0 bytes/sec for other UEs
137 // UPLINK - DISTANCE 20000 -> MCS 2 -> Itbs 2 (from table 7.1.7.2.1-1 of 36.213)
138 // 1 user -> 25 PRB at Itbs 2 -> 233 -> 137000 bytes/sec
139 // 3 users -> 8 PRB at Itbs 2 -> 69 -> 41000 bytes/sec
140 // 6 users -> 4 PRB at Itbs 2 -> 32 -> 22000 bytes/sec
141 // after the patch enforcing min 3 PRBs per UE:
142 // 12 users -> 3 PRB at Itbs 2 -> 26 bytes * 8/12 UE/TTI -> 12000 bytes/sec
143 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (1,20000,421000,137000,errorModel), TestCase::EXTENSIVE);
144 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (3,20000,421000,41000,errorModel), TestCase::EXTENSIVE);
145 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (6,20000,421000,22000,errorModel), TestCase::EXTENSIVE);
146 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (12,20000,421000,12000,errorModel), TestCase::EXTENSIVE);
147
148 // DOWNLINK - DISTANCE 100000 -> CQI == 0 -> out of range -> 0 bytes/sec
149 // UPLINK - DISTANCE 100000 -> CQI == 0 -> out of range -> 0 bytes/sec
150 AddTestCase (new LenaTdMtFfMacSchedulerTestCase (1,100000,0,0,errorModel), TestCase::QUICK);
151}
152
154
155
156// --------------- T E S T - C A S E ------------------------------
157
158std::string
160{
161 std::ostringstream oss;
162 oss << nUser << " UEs, distance " << dist << " m";
163 return oss.str ();
164}
165
166LenaTdMtFfMacSchedulerTestCase::LenaTdMtFfMacSchedulerTestCase (uint16_t nUser, double dist, double thrRefDl, double thrRefUl, bool errorModelEnabled)
167 : TestCase (BuildNameString (nUser, dist)),
168 m_nUser (nUser),
169 m_dist (dist),
170 m_thrRefDl (thrRefDl),
171 m_thrRefUl (thrRefUl),
172 m_errorModelEnabled (errorModelEnabled)
173{
174}
175
177{
178}
179
180
181void
183{
184
185 NS_LOG_FUNCTION (this << m_nUser << m_dist);
186
188 {
189 Config::SetDefault ("ns3::LteSpectrumPhy::CtrlErrorModelEnabled", BooleanValue (false));
190 Config::SetDefault ("ns3::LteSpectrumPhy::DataErrorModelEnabled", BooleanValue (false));
191 }
192
193 Config::SetDefault ("ns3::LteHelper::UseIdealRrc", BooleanValue (true));
194 Config::SetDefault ("ns3::MacStatsCalculator::DlOutputFilename", StringValue (CreateTempDirFilename ("DlMacStats.txt")));
195 Config::SetDefault ("ns3::MacStatsCalculator::UlOutputFilename", StringValue (CreateTempDirFilename ("UlMacStats.txt")));
196 Config::SetDefault ("ns3::RadioBearerStatsCalculator::DlRlcOutputFilename", StringValue (CreateTempDirFilename ("DlRlcStats.txt")));
197 Config::SetDefault ("ns3::RadioBearerStatsCalculator::UlRlcOutputFilename", StringValue (CreateTempDirFilename ("UlRlcStats.txt")));
198
199 //Disable Uplink Power Control
200 Config::SetDefault ("ns3::LteUePhy::EnableUplinkPowerControl", BooleanValue (false));
201
206 Ptr<LteHelper> lteHelper = CreateObject<LteHelper> ();
207 lteHelper->SetAttribute ("PathlossModel", StringValue ("ns3::FriisSpectrumPropagationLossModel"));
208
209 // Create Nodes: eNodeB and UE
210 NodeContainer enbNodes;
211 NodeContainer ueNodes;
212 enbNodes.Create (1);
213 ueNodes.Create (m_nUser);
214
215 // Install Mobility Model
217 mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
218 mobility.Install (enbNodes);
219 mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
220 mobility.Install (ueNodes);
221
222 // Create Devices and install them in the Nodes (eNB and UE)
223 NetDeviceContainer enbDevs;
224 NetDeviceContainer ueDevs;
225 lteHelper->SetSchedulerType ("ns3::TdMtFfMacScheduler");
226 lteHelper->SetSchedulerAttribute ("UlCqiFilter", EnumValue (FfMacScheduler::SRS_UL_CQI));
227 enbDevs = lteHelper->InstallEnbDevice (enbNodes);
228 ueDevs = lteHelper->InstallUeDevice (ueNodes);
229
230 // Attach a UE to a eNB
231 lteHelper->Attach (ueDevs, enbDevs.Get (0));
232
233 // Activate an EPS bearer
234 enum EpsBearer::Qci q = EpsBearer::GBR_CONV_VOICE;
235 EpsBearer bearer (q);
236 lteHelper->ActivateDataRadioBearer (ueDevs, bearer);
237
238
239 Ptr<LteEnbNetDevice> lteEnbDev = enbDevs.Get (0)->GetObject<LteEnbNetDevice> ();
240 Ptr<LteEnbPhy> enbPhy = lteEnbDev->GetPhy ();
241 enbPhy->SetAttribute ("TxPower", DoubleValue (30.0));
242 enbPhy->SetAttribute ("NoiseFigure", DoubleValue (5.0));
243
244 // Set UEs' position and power
245 for (int i = 0; i < m_nUser; i++)
246 {
248 mm->SetPosition (Vector (m_dist, 0.0, 0.0));
249 Ptr<LteUeNetDevice> lteUeDev = ueDevs.Get (i)->GetObject<LteUeNetDevice> ();
250 Ptr<LteUePhy> uePhy = lteUeDev->GetPhy ();
251 uePhy->SetAttribute ("TxPower", DoubleValue (23.0));
252 uePhy->SetAttribute ("NoiseFigure", DoubleValue (9.0));
253 }
254
255
256 double statsStartTime = 0.300; // need to allow for RRC connection establishment + SRS
257 double statsDuration = 0.6;
258 double tolerance = 0.1;
259 Simulator::Stop (Seconds (statsStartTime + statsDuration - 0.000001));
260
261 lteHelper->EnableMacTraces ();
262 lteHelper->EnableRlcTraces ();
263 Ptr<RadioBearerStatsCalculator> rlcStats = lteHelper->GetRlcStats ();
264 rlcStats->SetAttribute ("StartTime", TimeValue (Seconds (statsStartTime)));
265 rlcStats->SetAttribute ("EpochDuration", TimeValue (Seconds (statsDuration)));
266
267
268 Simulator::Run ();
269
273 NS_LOG_INFO ("DL - Test with " << m_nUser << " user(s) at distance " << m_dist);
274 std::vector <uint64_t> dlDataRxed;
275 for (int i = 0; i < m_nUser; i++)
276 {
277 // get the imsi
278 uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
279 uint8_t lcId = 3;
280 dlDataRxed.push_back (rlcStats->GetDlRxData (imsi, lcId));
281 NS_LOG_INFO ("\tUser " << i << " imsi " << imsi << " bytes rxed " << (double)dlDataRxed.at (i) << " thr " << (double)dlDataRxed.at (i) / statsDuration << " ref " << m_thrRefDl);
282 }
283
289 uint8_t found = 0;
290 for (int i = 0; i < m_nUser; i++)
291 {
292 double throughput = (double)dlDataRxed.at (i) / statsDuration;
293 if (throughput != 0 && found == 0)
294 {
295 NS_TEST_ASSERT_MSG_EQ_TOL (throughput, m_thrRefDl, m_thrRefDl * tolerance, " Unfair Throughput!");
296 found = 1;
297 }
298 else if (throughput != 0 && found == 1)
299 {
300 NS_TEST_ASSERT_MSG_EQ_TOL (0, m_thrRefDl, m_thrRefDl * tolerance, " Unfair Throughput!");
301 }
302 else
303 NS_TEST_ASSERT_MSG_EQ_TOL (throughput, 0, 0, " Unfair Throughput!");
304 }
305
309 NS_LOG_INFO ("UL - Test with " << m_nUser << " user(s) at distance " << m_dist);
310 std::vector <uint64_t> ulDataRxed;
311 for (int i = 0; i < m_nUser; i++)
312 {
313 // get the imsi
314 uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
315 // get the lcId
316 uint8_t lcId = 3;
317 ulDataRxed.push_back (rlcStats->GetUlRxData (imsi, lcId));
318 NS_LOG_INFO ("\tUser " << i << " imsi " << imsi << " bytes rxed " << (double)ulDataRxed.at (i) << " thr " << (double)ulDataRxed.at (i) / statsDuration << " ref " << m_thrRefUl);
319 }
326 for (int i = 0; i < m_nUser; i++)
327 {
328 NS_TEST_ASSERT_MSG_EQ_TOL ((double)ulDataRxed.at (i) / statsDuration, m_thrRefUl, m_thrRefUl * tolerance, " Unfair Throughput!");
329 }
330 Simulator::Destroy ();
331
332}
333
This system test program creates different test cases with a single eNB and several UEs,...
double m_dist
the distance between nodes
double m_thrRefUl
the UL throughput reference
double m_thrRefDl
the DL throughput reference
virtual void DoRun(void)
Implementation to actually run this TestCase.
LenaTdMtFfMacSchedulerTestCase(uint16_t nUser, double dist, double thrRefDl, double thrRefUl, bool errorModelEnabled)
Constructor.
bool m_errorModelEnabled
whether the error model is enabled
static std::string BuildNameString(uint16_t nUser, double dist)
Builds the test name string based on provided parameter values.
Test suite for TdMtFfMacScheduler tests.
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 LenaTestTdMtFfMacSchedulerSuite lenaTestTdMtFfMacSchedulerSuite
Every class exported by the ns3 library is enclosed in the ns3 namespace.
mobility
Definition: third.py:107