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lte-test-tdbet-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 
27 #include <ns3/object.h>
28 #include <ns3/spectrum-interference.h>
29 #include <ns3/spectrum-error-model.h>
30 #include <ns3/log.h>
31 #include <ns3/test.h>
32 #include <ns3/simulator.h>
33 #include <ns3/packet.h>
34 #include <ns3/ptr.h>
35 #include "ns3/radio-bearer-stats-calculator.h"
36 #include <ns3/constant-position-mobility-model.h>
37 #include <ns3/eps-bearer.h>
38 #include <ns3/node-container.h>
39 #include <ns3/mobility-helper.h>
40 #include <ns3/net-device-container.h>
41 #include <ns3/lte-ue-net-device.h>
42 #include <ns3/lte-enb-net-device.h>
43 #include <ns3/lte-ue-rrc.h>
44 #include <ns3/lte-helper.h>
45 #include "ns3/string.h"
46 #include "ns3/double.h"
47 #include <ns3/lte-enb-phy.h>
48 #include <ns3/lte-ue-phy.h>
49 #include <ns3/boolean.h>
50 #include <ns3/enum.h>
51 
52 #include "lte-test-tdbet-ff-mac-scheduler.h"
53 
54 NS_LOG_COMPONENT_DEFINE ("LenaTestTdBetFfMacCheduler");
55 
56 namespace ns3 {
57 
58 LenaTestTdBetFfMacSchedulerSuite::LenaTestTdBetFfMacSchedulerSuite ()
59  : TestSuite ("lte-tdbet-ff-mac-scheduler", SYSTEM)
60 {
61  NS_LOG_INFO ("creating LenaTestTdBetFfMacSchedulerSuite");
62 
63  bool errorModel = false;
64 
65  //Test Case 1: AMC works in TDBET
66 
67  //Note: here the MCS is calculated by the wideband CQI
68 
69  // DOWNLINK- DISTANCE 0 -> MCS 28 -> Itbs 26 (from table 7.1.7.2.1-1 of 36.213)
70  // 1 user -> 24 PRB at Itbs 26 -> 2196 -> 2196000 bytes/sec
71  // 3 users -> 2196000 among 3 users -> 732000 bytes/sec
72  // 6 users -> 2196000 among 6 users -> 366000 bytes/sec
73  // 12 users -> 2196000 among 12 users -> 183000 bytes/sec
74  // UPLINK- DISTANCE 0 -> MCS 28 -> Itbs 26 (from table 7.1.7.2.1-1 of 36.213)
75  // 1 user -> 25 PRB at Itbs 26 -> 2292 -> 2292000 bytes/sec
76  // 3 users -> 8 PRB at Itbs 26 -> 749 -> 749000 bytes/sec
77  // 6 users -> 4 PRB at Itbs 26 -> 373 -> 373000 bytes/sec
78  // after the patch enforcing min 3 PRBs per UE:
79  // 12 users -> 3 PRB at Itbs 26 -> 277 bytes * 8/12 UE/TTI -> 184670 bytes/sec
80  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (1,0,0,2196000,2292000, errorModel), TestCase::EXTENSIVE);
81  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (3,0,0,732000,749000, errorModel), TestCase::EXTENSIVE);
82  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (6,0,0,366000,373000, errorModel), TestCase::EXTENSIVE);
83  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (12,0,0,183000,184670, errorModel), TestCase::EXTENSIVE);
84 
85  // DOWNLINK - DISTANCE 4800 -> MCS 22 -> Itbs 20 (from table 7.1.7.2.1-1 of 36.213)
86  // 1 user -> 24 PRB at Itbs 20 -> 1383 -> 1383000 bytes/sec
87  // 3 users -> 1383000 among 3 users ->461000 bytes/sec
88  // 6 users -> 1383000 among 6 users ->230500 bytes/sec
89  // 12 users -> 1383000 among 12 users ->115250 bytes/sec
90  // UPLINK - DISTANCE 4800 -> MCS 14 -> Itbs 13 (from table 7.1.7.2.1-1 of 36.213)
91  // 1 user -> 25 PRB at Itbs 13 -> 807 -> 807000 bytes/sec
92  // 3 users -> 8 PRB at Itbs 13 -> 253 -> 253000 bytes/sec
93  // 6 users -> 4 PRB at Itbs 13 -> 125 -> 125000 bytes/sec
94  // after the patch enforcing min 3 PRBs per UE:
95  // 12 users -> 3 PRB at Itbs 13 -> 93 bytes * 8/12 UE/TTI -> 62000 bytes/sec
96  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (1,0,4800,1383000,807000, errorModel), TestCase::EXTENSIVE);
97  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (3,0,4800,461000,253000, errorModel), TestCase::EXTENSIVE);
98  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (6,0,4800,230500,125000, errorModel), TestCase::EXTENSIVE);
99  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (12,0,4800,115250,62000, errorModel), TestCase::EXTENSIVE);
100 
101  // DOWNLINK - DISTANCE 6000 -> MCS 14 -> Itbs 13 (from table 7.1.7.2.1-1 of 36.213)
102  // 1 user -> 24 PRB at Itbs 13 -> 775 -> 775000 bytes/sec
103  // 3 users -> 775000 among 3 users ->258333 bytes/sec
104  // 6 users -> 775000 among 6 users ->129166 bytes/sec
105  // 12 users -> 775000 among 12 users ->64583 bytes/sec
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  // 12 users -> 3 PRB at Itbs 11 -> 73 bytes * 8/12 UE/TTI -> 48667 bytes/sec
111  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (1,0,6000,775000,621000,errorModel), TestCase::EXTENSIVE);
112  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (3,0,6000,258333,201000,errorModel), TestCase::EXTENSIVE);
113  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (6,0,6000,129166,97000,errorModel), TestCase::EXTENSIVE);
114  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (12,0,6000,64583,48667,errorModel), TestCase::EXTENSIVE);
115 
116  // DOWNLINK - DISTANCE 10000 -> MCS 8 -> Itbs 8 (from table 7.1.7.2.1-1 of 36.213)
117  // 1 user -> 24 PRB at Itbs 8 -> 421 -> 421000 bytes/sec
118  // 3 users -> 421000 among 3 users ->140333 bytes/sec
119  // 6 users -> 421000 among 6 users ->70166 bytes/sec
120  // 12 users -> 421000 among 12 users ->35083 bytes/sec
121  // UPLINK - DISTANCE 9000 -> MCS 8 -> Itbs 8 (from table 7.1.7.2.1-1 of 36.213)
122  // 1 user -> 24 PRB at Itbs 8 -> 421 -> 421000 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 LenaTdBetFfMacSchedulerTestCase1 (1,0,10000,421000,421000,errorModel), TestCase::EXTENSIVE);
128  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (3,0,10000,140333,137000,errorModel), TestCase::EXTENSIVE);
129  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (6,0,10000,70166,67000,errorModel), TestCase::EXTENSIVE);
130  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (12,0,10000,35083,32667,errorModel), TestCase::EXTENSIVE);
131 
132  // DOWNLINK - 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
134  // 3 users -> 421000 among 3 users ->140333 bytes/sec
135  // 6 users -> 421000 among 6 users ->70166 bytes/sec
136  // 12 users -> 421000 among 12 users ->35083 bytes/sec
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 -> 137 -> 137000 bytes/sec
139  // 3 users -> 8 PRB at Itbs 2 -> 41 -> 41000 bytes/sec
140  // 6 users -> 4 PRB at Itbs 2 -> 22 -> 22000 bytes/sec
141  // after the patch enforcing min 3 PRBs per UE:
142  // 12 users -> 3 PRB at Itbs 2 -> 18 bytes * 8/12 UE/TTI -> 12000 bytes/sec
143  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (1,0,20000,421000,137000,errorModel), TestCase::EXTENSIVE);
144  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (3,0,20000,140333,41000,errorModel), TestCase::EXTENSIVE);
145  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (6,0,20000,70166,22000,errorModel), TestCase::EXTENSIVE);
146  AddTestCase (new LenaTdBetFfMacSchedulerTestCase1 (12,0,20000,35083,12000,errorModel), TestCase::EXTENSIVE);
147 
148  // Test Case 2: fairness check
149 
150  std::vector<uint16_t> dist;
151  dist.push_back (0); // User 0 distance --> MCS 28
152  dist.push_back (4800); // User 1 distance --> MCS 22
153  dist.push_back (6000); // User 2 distance --> MCS 14
154  dist.push_back (10000); // User 3 distance --> MCS 8
155  dist.push_back (20000); // User 4 distance --> MCS 8
156  std::vector<uint32_t> estAchievableRateDl;
157  estAchievableRateDl.push_back (2196000);
158  estAchievableRateDl.push_back (1383000);
159  estAchievableRateDl.push_back (775000);
160  estAchievableRateDl.push_back (421000);
161  estAchievableRateDl.push_back (421000);
162  std::vector<uint32_t> estThrTdBetUl;
163  estThrTdBetUl.push_back (469000); // User 0 estimated TTI throughput from TDBET
164  estThrTdBetUl.push_back (157000); // User 1 estimated TTI throughput from TDBET
165  estThrTdBetUl.push_back (125000); // User 2 estimated TTI throughput from TDBET
166  estThrTdBetUl.push_back (85000); // User 3 estimated TTI throughput from TDBET
167  estThrTdBetUl.push_back (26000); // User 4 estimated TTI throughput from TDBET
168  AddTestCase (new LenaTdBetFfMacSchedulerTestCase2 (dist, estAchievableRateDl, estThrTdBetUl, errorModel), TestCase::QUICK);
169 }
170 
171 static LenaTestTdBetFfMacSchedulerSuite lenaTestTdBetFfMacSchedulerSuite;
172 
173 
174 // --------------- T E S T - C A S E # 1 ------------------------------
175 
176 
177 std::string
178 LenaTdBetFfMacSchedulerTestCase1::BuildNameString (uint16_t nUser, uint16_t dist)
179 {
180  std::ostringstream oss;
181  oss << nUser << " UEs, distance " << dist << " m";
182  return oss.str ();
183 }
184 
185 LenaTdBetFfMacSchedulerTestCase1::LenaTdBetFfMacSchedulerTestCase1 (uint16_t nUser, uint16_t nLc, uint16_t dist, double thrRefDl, double thrRefUl, bool errorModelEnabled)
186  : TestCase (BuildNameString (nUser, dist)),
187  m_nUser (nUser),
188  m_nLc (nLc),
189  m_dist (dist),
190  m_thrRefDl (thrRefDl),
191  m_thrRefUl (thrRefUl),
192  m_errorModelEnabled (errorModelEnabled)
193 {
194 }
195 
196 LenaTdBetFfMacSchedulerTestCase1::~LenaTdBetFfMacSchedulerTestCase1 ()
197 {
198 }
199 
200 void
201 LenaTdBetFfMacSchedulerTestCase1::DoRun (void)
202 {
203  if (!m_errorModelEnabled)
204  {
205  Config::SetDefault ("ns3::LteSpectrumPhy::CtrlErrorModelEnabled", BooleanValue (false));
206  Config::SetDefault ("ns3::LteSpectrumPhy::DataErrorModelEnabled", BooleanValue (false));
207  }
208 
209  Config::SetDefault ("ns3::LteHelper::UseIdealRrc", BooleanValue (true));
210 
215  Ptr<LteHelper> lteHelper = CreateObject<LteHelper> ();
216 
217  lteHelper->SetAttribute ("PathlossModel", StringValue ("ns3::FriisSpectrumPropagationLossModel"));
218 
219  // Create Nodes: eNodeB and UE
220  NodeContainer enbNodes;
221  NodeContainer ueNodes;
222  enbNodes.Create (1);
223  ueNodes.Create (m_nUser);
224 
225  // Install Mobility Model
226  MobilityHelper mobility;
227  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
228  mobility.Install (enbNodes);
229  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
230  mobility.Install (ueNodes);
231 
232  // Create Devices and install them in the Nodes (eNB and UE)
233  NetDeviceContainer enbDevs;
234  NetDeviceContainer ueDevs;
235  lteHelper->SetSchedulerType ("ns3::TdBetFfMacScheduler");
236  enbDevs = lteHelper->InstallEnbDevice (enbNodes);
237  ueDevs = lteHelper->InstallUeDevice (ueNodes);
238 
239  // Attach a UE to a eNB
240  lteHelper->Attach (ueDevs, enbDevs.Get (0));
241 
242  // Activate an EPS bearer
243  enum EpsBearer::Qci q = EpsBearer::GBR_CONV_VOICE;
244  EpsBearer bearer (q);
245  lteHelper->ActivateDataRadioBearer (ueDevs, bearer);
246 
247  Ptr<LteEnbNetDevice> lteEnbDev = enbDevs.Get (0)->GetObject<LteEnbNetDevice> ();
248  Ptr<LteEnbPhy> enbPhy = lteEnbDev->GetPhy ();
249  enbPhy->SetAttribute ("TxPower", DoubleValue (30.0));
250  enbPhy->SetAttribute ("NoiseFigure", DoubleValue (5.0));
251 
252  // Set UEs' position and power
253  for (int i = 0; i < m_nUser; i++)
254  {
255  Ptr<ConstantPositionMobilityModel> mm = ueNodes.Get (i)->GetObject<ConstantPositionMobilityModel> ();
256  mm->SetPosition (Vector (m_dist, 0.0, 0.0));
257  Ptr<LteUeNetDevice> lteUeDev = ueDevs.Get (i)->GetObject<LteUeNetDevice> ();
258  Ptr<LteUePhy> uePhy = lteUeDev->GetPhy ();
259  uePhy->SetAttribute ("TxPower", DoubleValue (23.0));
260  uePhy->SetAttribute ("NoiseFigure", DoubleValue (9.0));
261  }
262 
263  double statsStartTime = 0.300; // need to allow for RRC connection establishment + SRS
264  double statsDuration = 0.6;
265  double tolerance = 0.1;
266  Simulator::Stop (Seconds (statsStartTime + statsDuration - 0.000001));
267 
268  lteHelper->EnableMacTraces ();
269  lteHelper->EnableRlcTraces ();
270  Ptr<RadioBearerStatsCalculator> rlcStats = lteHelper->GetRlcStats ();
271  rlcStats->SetAttribute ("StartTime", TimeValue (Seconds (statsStartTime)));
272  rlcStats->SetAttribute ("EpochDuration", TimeValue (Seconds (statsDuration)));
273 
274  NS_LOG_DEBUG ("Start ");
275 
276  Simulator::Run ();
277 
281  NS_LOG_INFO ("DL - Test with " << m_nUser << " user(s) at distance " << m_dist);
282  std::vector <uint64_t> dlDataRxed;
283  for (int i = 0; i < m_nUser; i++)
284  {
285  // get the imsi
286  uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
287  // get the lcId
288  uint8_t lcId = 3;
289  dlDataRxed.push_back (rlcStats->GetDlRxData (imsi, lcId));
290  NS_LOG_INFO ("\tUser " << i << " imsi " << imsi << " bytes rxed " << (double)dlDataRxed.at (i) << " thr " << (double)dlDataRxed.at (i) / statsDuration << " ref " << m_thrRefDl);
291  }
298  for (int i = 0; i < m_nUser; i++)
299  {
300  NS_TEST_ASSERT_MSG_EQ_TOL ((double)dlDataRxed.at (i) / statsDuration, m_thrRefDl, m_thrRefDl * tolerance, " Unfair Throughput!");
301  }
302 
306  NS_LOG_INFO ("UL - Test with " << m_nUser << " user(s) at distance " << m_dist);
307  std::vector <uint64_t> ulDataRxed;
308  for (int i = 0; i < m_nUser; i++)
309  {
310  // get the imsi
311  uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
312  // get the lcId
313  uint8_t lcId = 3;
314  ulDataRxed.push_back (rlcStats->GetUlRxData (imsi, lcId));
315  NS_LOG_INFO ("\tUser " << i << " imsi " << imsi << " bytes rxed " << (double)ulDataRxed.at (i) << " thr " << (double)ulDataRxed.at (i) / statsDuration << " ref " << m_thrRefUl);
316  }
323  for (int i = 0; i < m_nUser; i++)
324  {
325  NS_TEST_ASSERT_MSG_EQ_TOL ((double)ulDataRxed.at (i) / statsDuration, m_thrRefUl, m_thrRefUl * tolerance, " Unfair Throughput!");
326  }
327  Simulator::Destroy ();
328 
329 }
330 
331 
332 
333 // --------------- T E S T - C A S E # 2 ------------------------------
334 
335 
336 std::string
337 LenaTdBetFfMacSchedulerTestCase2::BuildNameString (uint16_t nUser, std::vector<uint16_t> dist)
338 {
339  std::ostringstream oss;
340  oss << "distances (m) = [ " ;
341  for (std::vector<uint16_t>::iterator it = dist.begin (); it != dist.end (); ++it)
342  {
343  oss << *it << " ";
344  }
345  oss << "]";
346  return oss.str ();
347 }
348 
349 
350 LenaTdBetFfMacSchedulerTestCase2::LenaTdBetFfMacSchedulerTestCase2 (std::vector<uint16_t> dist, std::vector<uint32_t> estAchievableRateDl, std::vector<uint32_t> estThrTdBetUl, bool errorModelEnabled)
351  : TestCase (BuildNameString (dist.size (), dist)),
352  m_nUser (dist.size ()),
353  m_dist (dist),
354  m_achievableRateDl (estAchievableRateDl),
355  m_estThrTdBetUl (estThrTdBetUl),
356  m_errorModelEnabled (errorModelEnabled)
357 {
358 }
359 
360 LenaTdBetFfMacSchedulerTestCase2::~LenaTdBetFfMacSchedulerTestCase2 ()
361 {
362 }
363 
364 void
365 LenaTdBetFfMacSchedulerTestCase2::DoRun (void)
366 {
367 
368  NS_LOG_FUNCTION (this);
369 
370  if (!m_errorModelEnabled)
371  {
372  Config::SetDefault ("ns3::LteSpectrumPhy::CtrlErrorModelEnabled", BooleanValue (false));
373  Config::SetDefault ("ns3::LteSpectrumPhy::DataErrorModelEnabled", BooleanValue (false));
374  }
375  Config::SetDefault ("ns3::LteHelper::UseIdealRrc", BooleanValue (false));
376 
381  Ptr<LteHelper> lteHelper = CreateObject<LteHelper> ();
382 
383  lteHelper->SetAttribute ("PathlossModel", StringValue ("ns3::FriisSpectrumPropagationLossModel"));
384 
385  // Create Nodes: eNodeB and UE
386  NodeContainer enbNodes;
387  NodeContainer ueNodes;
388  enbNodes.Create (1);
389  ueNodes.Create (m_nUser);
390 
391  // Install Mobility Model
392  MobilityHelper mobility;
393  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
394  mobility.Install (enbNodes);
395  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
396  mobility.Install (ueNodes);
397 
398  // Create Devices and install them in the Nodes (eNB and UE)
399  NetDeviceContainer enbDevs;
400  NetDeviceContainer ueDevs;
401  lteHelper->SetSchedulerType ("ns3::TdBetFfMacScheduler");
402  enbDevs = lteHelper->InstallEnbDevice (enbNodes);
403  ueDevs = lteHelper->InstallUeDevice (ueNodes);
404 
405  // Attach a UE to a eNB
406  lteHelper->Attach (ueDevs, enbDevs.Get (0));
407 
408  // Activate an EPS bearer
409  enum EpsBearer::Qci q = EpsBearer::GBR_CONV_VOICE;
410  EpsBearer bearer (q);
411  lteHelper->ActivateDataRadioBearer (ueDevs, bearer);
412 
413  Ptr<LteEnbNetDevice> lteEnbDev = enbDevs.Get (0)->GetObject<LteEnbNetDevice> ();
414  Ptr<LteEnbPhy> enbPhy = lteEnbDev->GetPhy ();
415  enbPhy->SetAttribute ("TxPower", DoubleValue (30.0));
416  enbPhy->SetAttribute ("NoiseFigure", DoubleValue (5.0));
417 
418  // Set UEs' position and power
419  for (int i = 0; i < m_nUser; i++)
420  {
421  Ptr<ConstantPositionMobilityModel> mm = ueNodes.Get (i)->GetObject<ConstantPositionMobilityModel> ();
422  mm->SetPosition (Vector (m_dist.at (i), 0.0, 0.0));
423  Ptr<LteUeNetDevice> lteUeDev = ueDevs.Get (i)->GetObject<LteUeNetDevice> ();
424  Ptr<LteUePhy> uePhy = lteUeDev->GetPhy ();
425  uePhy->SetAttribute ("TxPower", DoubleValue (23.0));
426  uePhy->SetAttribute ("NoiseFigure", DoubleValue (9.0));
427  }
428 
429 
430  double statsStartTime = 0.300; // need to allow for RRC connection establishment + SRS
431  double statsDuration = 0.4;
432  double tolerance = 0.1;
433  Simulator::Stop (Seconds (statsStartTime + statsDuration - 0.000001));
434 
435  lteHelper->EnableMacTraces ();
436  lteHelper->EnableRlcTraces ();
437  Ptr<RadioBearerStatsCalculator> rlcStats = lteHelper->GetRlcStats ();
438  rlcStats->SetAttribute ("StartTime", TimeValue (Seconds (statsStartTime)));
439  rlcStats->SetAttribute ("EpochDuration", TimeValue (Seconds (statsDuration)));
440 
441  Simulator::Run ();
442 
443  NS_LOG_INFO ("DL - Test with " << m_nUser << " user(s)");
444  std::vector <uint64_t> dlDataRxed;
445  double totalData = 0;
446  double estTotalThr = 0;
447  double estUeThr = 0;
448  for (int i = 0; i < m_nUser; i++)
449  {
450  // get the imsi
451  uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
452  // get the lcId
453  uint8_t lcId = 3;
454  dlDataRxed.push_back (rlcStats->GetDlRxData (imsi, lcId));
455  totalData += (double)dlDataRxed.at (i);
456  estTotalThr += 1 / m_achievableRateDl.at (i);
457  NS_LOG_INFO ("\tUser " << i << " dist " << m_dist.at (i) << " imsi " << imsi << " bytes rxed " << (double)dlDataRxed.at (i) << " thr " << (double)dlDataRxed.at (i) / statsDuration << " ref " << m_nUser);
458  }
459 
460  estTotalThr = m_nUser * (1 / estTotalThr);
461  estUeThr = estTotalThr / m_nUser;
466  for (int i = 0; i < m_nUser; i++)
467  {
468  double thrRatio = (double) 1 / m_nUser;
469  double estThrRatio = (double)dlDataRxed.at (i) / totalData;
470  NS_LOG_INFO ("\tUser " << i << " thrRatio " << thrRatio << " estThrRatio " << estThrRatio);
471  NS_TEST_ASSERT_MSG_EQ_TOL (estThrRatio, thrRatio, tolerance, " Unfair Throughput!");
472  NS_TEST_ASSERT_MSG_EQ_TOL ((double)dlDataRxed.at (i) / statsDuration, estUeThr, estUeThr * tolerance, " Unfair Throughput!");
473 
474  }
475 
480  NS_LOG_INFO ("UL - Test with " << m_nUser);
481  std::vector <uint64_t> ulDataRxed;
482  for (int i = 0; i < m_nUser; i++)
483  {
484  // get the imsi
485  uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
486  // get the lcId
487  uint8_t lcId = 3;
488  ulDataRxed.push_back (rlcStats->GetUlRxData (imsi, lcId));
489  NS_LOG_INFO ("\tUser " << i << " dist " << m_dist.at (i) << " bytes rxed " << (double)ulDataRxed.at (i) << " thr " << (double)ulDataRxed.at (i) / statsDuration << " ref " << (double)m_estThrTdBetUl.at (i));
490  NS_TEST_ASSERT_MSG_EQ_TOL ((double)ulDataRxed.at (i) / statsDuration, (double)m_estThrTdBetUl.at (i), (double)m_estThrTdBetUl.at (i) * tolerance, " Unfair Throughput!");
491  }
492  Simulator::Destroy ();
493 
494 }
495 
496 
497 } // namespace ns3
498 
499 
500 
501