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lte-test-fdbet-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-fdbet-ff-mac-scheduler.h"
53 
54 NS_LOG_COMPONENT_DEFINE ("LenaTestFdBetFfMacCheduler");
55 
56 namespace ns3 {
57 
58 LenaTestFdBetFfMacSchedulerSuite::LenaTestFdBetFfMacSchedulerSuite ()
59  : TestSuite ("lte-fdbet-ff-mac-scheduler", SYSTEM)
60 {
61  NS_LOG_INFO ("creating LenaTestFdBetFfMacSchedulerSuite");
62 
63  bool errorModel = false;
64 
65  //Test Case 1: AMC works in FDBET
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 -> 8 PRB at Itbs 26 -> 749 -> 749000 bytes/sec
72  // 6 users -> 4 PRB at Itbs 26 -> 373 -> 373000 bytes/sec
73  // 12 users -> 2 PRB at Itbs 26 -> 185 -> 185000 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 LenaFdBetFfMacSchedulerTestCase1 (1,0,0,2196000,2292000, errorModel), TestCase::EXTENSIVE);
81  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (3,0,0,749000,749000, errorModel), TestCase::EXTENSIVE);
82  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (6,0,0,373000,373000, errorModel), TestCase::EXTENSIVE);
83  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (12,0,0,185000,184670, 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 -> 8 PRB at Itbs 20 -> 469 -> 469000 bytes/sec
88  // 6 users -> 4 PRB at Itbs 20 -> 233 -> 233000 bytes/sec
89  // 12 users -> 2 PRB at Itbs 20 -> 113 -> 113000 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 LenaFdBetFfMacSchedulerTestCase1 (1,0,4800,1383000,807000, errorModel), TestCase::EXTENSIVE);
97  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (3,0,4800,469000,253000, errorModel), TestCase::EXTENSIVE);
98  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (6,0,4800,233500,125000, errorModel), TestCase::EXTENSIVE);
99  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (12,0,4800,113000,62000, 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 15 -> 775 -> 775000 bytes/sec
103  // 3 users -> 8 PRB at Itbs 15 -> 253 -> 253000 bytes/sec
104  // 6 users -> 4 PRB at Itbs 15 -> 125 -> 125000 bytes/sec
105  // 12 users -> 2 PRB at Itbs 15 -> 61 -> 61000 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 LenaFdBetFfMacSchedulerTestCase1 (1,0,6000,775000,621000,errorModel), TestCase::EXTENSIVE);
112  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (3,0,6000,253000,201000,errorModel), TestCase::EXTENSIVE);
113  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (6,0,6000,125000,97000,errorModel), TestCase::EXTENSIVE);
114  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (12,0,6000,61000,48667,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 -> 8 PRB at Itbs 8 -> 137 -> 137000 bytes/sec
119  // 6 users -> 4 PRB at Itbs 8 -> 67 -> 67000 bytes/sec
120  // 12 users -> 2 PRB at Itbs 8 -> 32 -> 32000 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 LenaFdBetFfMacSchedulerTestCase1 (1,0,10000,421000,421000,errorModel), TestCase::EXTENSIVE);
128  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (3,0,10000,137000,137000,errorModel), TestCase::EXTENSIVE);
129  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (6,0,10000,67000,67000,errorModel), TestCase::EXTENSIVE);
130  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (12,0,10000,32000,32667,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 -> 8 PRB at Itbs 8 -> 137 -> 137000 bytes/sec
135  // 6 users -> 4 PRB at Itbs 8 -> 67 -> 67000 bytes/sec
136  // 12 users -> 2 PRB at Itbs 8 -> 32 -> 32000 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 LenaFdBetFfMacSchedulerTestCase1 (1,0,20000,421000,137000,errorModel), TestCase::EXTENSIVE);
144  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (3,0,20000,137000,41000,errorModel), TestCase::EXTENSIVE);
145  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (6,0,20000,67000,22000,errorModel), TestCase::EXTENSIVE);
146  AddTestCase (new LenaFdBetFfMacSchedulerTestCase1 (12,0,20000,32000,12000,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> estThrFdBetUl;
163  estThrFdBetUl.push_back (469000); // User 0 estimated TTI throughput from FDBET
164  estThrFdBetUl.push_back (157000); // User 1 estimated TTI throughput from FDBET
165  estThrFdBetUl.push_back (125000); // User 2 estimated TTI throughput from FDBET
166  estThrFdBetUl.push_back (85000); // User 3 estimated TTI throughput from FDBET
167  estThrFdBetUl.push_back (26000); // User 4 estimated TTI throughput from FDBET
168  AddTestCase (new LenaFdBetFfMacSchedulerTestCase2 (dist, estAchievableRateDl, estThrFdBetUl, errorModel), TestCase::QUICK);
169 }
170 
171 static LenaTestFdBetFfMacSchedulerSuite lenaTestFdBetFfMacSchedulerSuite;
172 
173 
174 // --------------- T E S T - C A S E # 1 ------------------------------
175 
176 
177 std::string
178 LenaFdBetFfMacSchedulerTestCase1::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 LenaFdBetFfMacSchedulerTestCase1::LenaFdBetFfMacSchedulerTestCase1 (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 LenaFdBetFfMacSchedulerTestCase1::~LenaFdBetFfMacSchedulerTestCase1 ()
197 {
198 }
199 
200 void
201 LenaFdBetFfMacSchedulerTestCase1::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::FdBetFfMacScheduler");
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  Simulator::Run ();
275 
279  NS_LOG_INFO ("DL - Test with " << m_nUser << " user(s) at distance " << m_dist);
280  std::vector <uint64_t> dlDataRxed;
281  for (int i = 0; i < m_nUser; i++)
282  {
283  // get the imsi
284  uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
285  // get the lcId
286  uint8_t lcId = 3;
287  dlDataRxed.push_back (rlcStats->GetDlRxData (imsi, lcId));
288  NS_LOG_INFO ("\tUser " << i << " imsi " << imsi << " bytes rxed " << (double)dlDataRxed.at (i) << " thr " << (double)dlDataRxed.at (i) / statsDuration << " ref " << m_thrRefDl);
289  }
296  for (int i = 0; i < m_nUser; i++)
297  {
298  NS_TEST_ASSERT_MSG_EQ_TOL ((double)dlDataRxed.at (i) / statsDuration, m_thrRefDl, m_thrRefDl * tolerance, " Unfair Throughput!");
299  }
300 
304  NS_LOG_INFO ("UL - Test with " << m_nUser << " user(s) at distance " << m_dist);
305  std::vector <uint64_t> ulDataRxed;
306  for (int i = 0; i < m_nUser; i++)
307  {
308  // get the imsi
309  uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
310  // get the lcId
311  uint8_t lcId = 3;
312  ulDataRxed.push_back (rlcStats->GetUlRxData (imsi, lcId));
313  NS_LOG_INFO ("\tUser " << i << " imsi " << imsi << " bytes rxed " << (double)ulDataRxed.at (i) << " thr " << (double)ulDataRxed.at (i) / statsDuration << " ref " << m_thrRefUl);
314  }
321  for (int i = 0; i < m_nUser; i++)
322  {
323  NS_TEST_ASSERT_MSG_EQ_TOL ((double)ulDataRxed.at (i) / statsDuration, m_thrRefUl, m_thrRefUl * tolerance, " Unfair Throughput!");
324  }
325  Simulator::Destroy ();
326 
327 }
328 
329 
330 
331 // --------------- T E S T - C A S E # 2 ------------------------------
332 
333 
334 std::string
335 LenaFdBetFfMacSchedulerTestCase2::BuildNameString (uint16_t nUser, std::vector<uint16_t> dist)
336 {
337  std::ostringstream oss;
338  oss << "distances (m) = [ " ;
339  for (std::vector<uint16_t>::iterator it = dist.begin (); it != dist.end (); ++it)
340  {
341  oss << *it << " ";
342  }
343  oss << "]";
344  return oss.str ();
345 }
346 
347 
348 LenaFdBetFfMacSchedulerTestCase2::LenaFdBetFfMacSchedulerTestCase2 (std::vector<uint16_t> dist, std::vector<uint32_t> estAchievableRateDl, std::vector<uint32_t> estThrFdBetUl, bool errorModelEnabled)
349  : TestCase (BuildNameString (dist.size (), dist)),
350  m_nUser (dist.size ()),
351  m_dist (dist),
352  m_achievableRateDl (estAchievableRateDl),
353  m_estThrFdBetUl (estThrFdBetUl),
354  m_errorModelEnabled (errorModelEnabled)
355 {
356 }
357 
358 LenaFdBetFfMacSchedulerTestCase2::~LenaFdBetFfMacSchedulerTestCase2 ()
359 {
360 }
361 
362 void
363 LenaFdBetFfMacSchedulerTestCase2::DoRun (void)
364 {
365 
366  NS_LOG_FUNCTION (this);
367 
368  if (!m_errorModelEnabled)
369  {
370  Config::SetDefault ("ns3::LteSpectrumPhy::CtrlErrorModelEnabled", BooleanValue (false));
371  Config::SetDefault ("ns3::LteSpectrumPhy::DataErrorModelEnabled", BooleanValue (false));
372  }
373  Config::SetDefault ("ns3::LteHelper::UseIdealRrc", BooleanValue (false));
374 
379  Ptr<LteHelper> lteHelper = CreateObject<LteHelper> ();
380 
381  lteHelper->SetAttribute ("PathlossModel", StringValue ("ns3::FriisSpectrumPropagationLossModel"));
382 
383  // Create Nodes: eNodeB and UE
384  NodeContainer enbNodes;
385  NodeContainer ueNodes;
386  enbNodes.Create (1);
387  ueNodes.Create (m_nUser);
388 
389  // Install Mobility Model
390  MobilityHelper mobility;
391  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
392  mobility.Install (enbNodes);
393  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
394  mobility.Install (ueNodes);
395 
396  // Create Devices and install them in the Nodes (eNB and UE)
397  NetDeviceContainer enbDevs;
398  NetDeviceContainer ueDevs;
399  lteHelper->SetSchedulerType ("ns3::FdBetFfMacScheduler");
400  enbDevs = lteHelper->InstallEnbDevice (enbNodes);
401  ueDevs = lteHelper->InstallUeDevice (ueNodes);
402 
403  // Attach a UE to a eNB
404  lteHelper->Attach (ueDevs, enbDevs.Get (0));
405 
406  // Activate an EPS bearer
407  enum EpsBearer::Qci q = EpsBearer::GBR_CONV_VOICE;
408  EpsBearer bearer (q);
409  lteHelper->ActivateDataRadioBearer (ueDevs, bearer);
410 
411  Ptr<LteEnbNetDevice> lteEnbDev = enbDevs.Get (0)->GetObject<LteEnbNetDevice> ();
412  Ptr<LteEnbPhy> enbPhy = lteEnbDev->GetPhy ();
413  enbPhy->SetAttribute ("TxPower", DoubleValue (30.0));
414  enbPhy->SetAttribute ("NoiseFigure", DoubleValue (5.0));
415 
416  // Set UEs' position and power
417  for (int i = 0; i < m_nUser; i++)
418  {
419  Ptr<ConstantPositionMobilityModel> mm = ueNodes.Get (i)->GetObject<ConstantPositionMobilityModel> ();
420  mm->SetPosition (Vector (m_dist.at (i), 0.0, 0.0));
421  Ptr<LteUeNetDevice> lteUeDev = ueDevs.Get (i)->GetObject<LteUeNetDevice> ();
422  Ptr<LteUePhy> uePhy = lteUeDev->GetPhy ();
423  uePhy->SetAttribute ("TxPower", DoubleValue (23.0));
424  uePhy->SetAttribute ("NoiseFigure", DoubleValue (9.0));
425  }
426 
427 
428  double statsStartTime = 0.300; // need to allow for RRC connection establishment + SRS
429  double statsDuration = 0.4;
430  double tolerance = 0.1;
431  Simulator::Stop (Seconds (statsStartTime + statsDuration - 0.000001));
432 
433  lteHelper->EnableMacTraces ();
434  lteHelper->EnableRlcTraces ();
435  Ptr<RadioBearerStatsCalculator> rlcStats = lteHelper->GetRlcStats ();
436  rlcStats->SetAttribute ("StartTime", TimeValue (Seconds (statsStartTime)));
437  rlcStats->SetAttribute ("EpochDuration", TimeValue (Seconds (statsDuration)));
438 
439  Simulator::Run ();
440 
441  NS_LOG_INFO ("DL - Test with " << m_nUser << " user(s)");
442  std::vector <uint64_t> dlDataRxed;
443  double totalData = 0;
444  double estTotalThr = 0;
445  double estUeThr = 0;
446  for (int i = 0; i < m_nUser; i++)
447  {
448  // get the imsi
449  uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
450  // get the lcId
451  uint8_t lcId = 3;
452  dlDataRxed.push_back (rlcStats->GetDlRxData (imsi, lcId));
453  totalData += (double)dlDataRxed.at (i);
454  estTotalThr += 1 / m_achievableRateDl.at (i);
455  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);
456  }
457 
458  estTotalThr = m_nUser * (1 / estTotalThr);
459  estUeThr = estTotalThr / m_nUser;
464  for (int i = 0; i < m_nUser; i++)
465  {
466  double thrRatio = (double) 1 / m_nUser;
467  double estThrRatio = (double)dlDataRxed.at (i) / totalData;
468  NS_LOG_INFO ("\tUser " << i << " thrRatio " << thrRatio << " estThrRatio " << estThrRatio);
469  NS_TEST_ASSERT_MSG_EQ_TOL (estThrRatio, thrRatio, tolerance, " Unfair Throughput!");
470  NS_TEST_ASSERT_MSG_EQ_TOL ((double)dlDataRxed.at (i) / statsDuration, estUeThr, estUeThr * tolerance, " Unfair Throughput!");
471 
472  }
473 
478  NS_LOG_INFO ("UL - Test with " << m_nUser);
479  std::vector <uint64_t> ulDataRxed;
480  for (int i = 0; i < m_nUser; i++)
481  {
482  // get the imsi
483  uint64_t imsi = ueDevs.Get (i)->GetObject<LteUeNetDevice> ()->GetImsi ();
484  // get the lcId
485  uint8_t lcId = 3;
486  ulDataRxed.push_back (rlcStats->GetUlRxData (imsi, lcId));
487  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_estThrFdBetUl.at (i));
488  NS_TEST_ASSERT_MSG_EQ_TOL ((double)ulDataRxed.at (i) / statsDuration, (double)m_estThrFdBetUl.at (i), (double)m_estThrFdBetUl.at (i) * tolerance, " Unfair Throughput!");
489  }
490  Simulator::Destroy ();
491 
492 }
493 
494 
495 } // namespace ns3
496 
497 
498 
499