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lte-test-pathloss-model.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  */
20 
21 #include "ns3/simulator.h"
22 
23 #include "ns3/log.h"
24 
25 #include "ns3/spectrum-test.h"
26 
27 #include "ns3/lte-phy-tag.h"
28 #include "ns3/lte-sinr-chunk-processor.h"
29 
30 
31 #include <ns3/hybrid-buildings-propagation-loss-model.h>
32 #include <ns3/node-container.h>
33 #include <ns3/mobility-helper.h>
34 #include <ns3/lte-helper.h>
35 #include <ns3/single-model-spectrum-channel.h>
36 #include "ns3/string.h"
37 #include "ns3/double.h"
38 #include <ns3/building.h>
39 #include <ns3/enum.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/lte-enb-phy.h>
46 #include <ns3/lte-ue-phy.h>
47 
48 #include "lte-test-sinr-chunk-processor.h"
49 #include "lte-test-ue-phy.h"
50 #include "lte-test-pathloss-model.h"
51 
52 NS_LOG_COMPONENT_DEFINE ("LtePathlossModelTest");
53 
54 namespace ns3 {
55 
56 
67 void
68 LteTestPathlossDlSchedCallback (LtePathlossModelSystemTestCase *testcase, std::string path,
69  uint32_t frameNo, uint32_t subframeNo, uint16_t rnti,
70  uint8_t mcsTb1, uint16_t sizeTb1, uint8_t mcsTb2, uint16_t sizeTb2)
71 {
72  testcase->DlScheduling (frameNo, subframeNo, rnti, mcsTb1, sizeTb1, mcsTb2, sizeTb2);
73 }
74 
75 
76 
77 LtePathlossModelTestSuite::LtePathlossModelTestSuite ()
78  : TestSuite ("lte-pathloss-model", SYSTEM)
79 {
80 
81 
82  // LogLevel logLevel = (LogLevel)(LOG_PREFIX_FUNC | LOG_PREFIX_TIME | LOG_LEVEL_ALL);
83  // LogComponentEnable ("LteHelper", logLevel);
84  // LogComponentEnable ("LtePathlossModelTest", logLevel);
85  // LogComponentEnable ("BuildingsPropagationLossModel", logLevel);
86  // LogComponentEnable ("LteInterference", logLevel);
87  // LogComponentEnable ("LteSpectrumValueHelper", logLevel);
88  // LogComponentEnable ("LteEnbNetDevice", logLevel);
89 
90  struct SnrEfficiencyMcs
91  {
92  double snrDb;
93  double efficiency;
94  int mcsIndex;
95  };
96 
101  SnrEfficiencyMcs snrEfficiencyMcs[] = {
102  { -5.00000, 0.08024, -1},
103  { -4.00000, 0.10030, -1},
104  { -3.00000, 0.12518, -1},
105  { -2.00000, 0.15589, 0},
106  { -1.00000, 0.19365, 0},
107  { 0.00000, 0.23983, 2},
108  { 1.00000, 0.29593, 2},
109  { 2.00000, 0.36360, 2},
110  { 3.00000, 0.44451, 4},
111  { 4.00000, 0.54031, 4},
112  { 5.00000, 0.65251, 6},
113  { 6.00000, 0.78240, 6},
114  { 7.00000, 0.93086, 8},
115  { 8.00000, 1.09835, 8},
116  { 9.00000, 1.28485, 10},
117  { 10.00000, 1.48981, 12},
118  { 11.00000, 1.71229, 12},
119  { 12.00000, 1.95096, 14},
120  { 13.00000, 2.20429, 14},
121  { 14.00000, 2.47062, 16},
122  { 15.00000, 2.74826, 18},
123  { 16.00000, 3.03560, 18},
124  { 17.00000, 3.33115, 20},
125  { 18.00000, 3.63355, 20},
126  { 19.00000, 3.94163, 22},
127  { 20.00000, 4.25439, 22},
128  { 21.00000, 4.57095, 24},
129  { 22.00000, 4.89060, 24},
130  { 23.00000, 5.21276, 26},
131  { 24.00000, 5.53693, 26},
132  { 25.00000, 5.86271, 28},
133  { 26.00000, 6.18980, 28},
134  { 27.00000, 6.51792, 28},
135  { 28.00000, 6.84687, 28},
136  { 29.00000, 7.17649, 28},
137  { 30.00000, 7.50663, 28},
138  };
139 
140 
141  double txPowerDbm = 30; // default eNB TX power over whole bandwidth
142  double txPowerLin = std::pow (10, (txPowerDbm - 30)/10);
143  double ktDbm = -174; // reference LTE noise PSD
144  double noisePowerDbm = ktDbm + 10 * std::log10 (25 * 180000); // corresponds to kT*bandwidth in linear units
145  double receiverNoiseFigureDb = 9.0; // default UE noise figure
146  double noiseLin = std::pow (10, (noisePowerDbm-30+receiverNoiseFigureDb)/10);
147 
148  // reference values obtained with the octave script src/lte/test/reference/lte_pathloss.m
149 
150  double loss[] = {81.062444, 134.078605, 144.259958};
151  double dist[] = {100.0, 500.0, 1500};
152 
153  int numOfTests = sizeof (loss) / sizeof (double);
154  for ( int i = 0 ; i < numOfTests; i++ )
155  {
156  // double lossDb = txPowerDbm - snrEfficiencyMcs[i].snrDb - noisePowerDbm - receiverNoiseFigureDb;
157  double sinrLin = (txPowerLin/(pow(10, loss[i]/10))) / noiseLin;
158  // double sinrDb = txPowerDbm- noisePowerDbm - receiverNoiseFigureDb - loss[i];
159  double sinrDb = 10 * std::log10 (sinrLin);
160  NS_LOG_INFO (" Ptx " << txPowerDbm << " Pn " << noisePowerDbm << " Fn " << receiverNoiseFigureDb << " Pl " << loss[i] << " dist " << dist[i]);
161 
162  int mcs = -1;
163  int numSnrEfficiencyMcsEntries = sizeof (snrEfficiencyMcs) / sizeof (SnrEfficiencyMcs);
164  for (int j = 0; j < numSnrEfficiencyMcsEntries && snrEfficiencyMcs[j].snrDb < sinrDb; ++j)
165  {
166  mcs = snrEfficiencyMcs[j].mcsIndex;
167  }
168 
169  std::ostringstream name;
170  name << " snr= " << sinrDb << " dB, "
171  << " mcs= " << snrEfficiencyMcs[i].mcsIndex;
172  AddTestCase (new LtePathlossModelSystemTestCase (name.str (), sinrDb, dist[i], mcs), TestCase::QUICK);
173  }
174 
175 
176 
177 
178 
179 }
180 
181 static LtePathlossModelTestSuite ltePathlossModelTestSuite;
182 
183 
184 
185 
186 LtePathlossModelSystemTestCase::LtePathlossModelSystemTestCase (std::string name, double snrDb, double dist, uint16_t mcsIndex)
187 : TestCase (name),
188 m_snrDb (snrDb),
189 m_distance (dist),
190 m_mcsIndex (mcsIndex)
191 {
192  std::ostringstream sstream1, sstream2;
193  sstream1 << " snr=" << snrDb
194  << " mcs=" << mcsIndex << " distance=" << dist;
195 
196  NS_LOG_INFO ("Creating LtePathlossModelSystemTestCase: " + sstream1.str ());
197 }
198 
199 LtePathlossModelSystemTestCase::~LtePathlossModelSystemTestCase ()
200 {
201 }
202 
203 void
204 LtePathlossModelSystemTestCase::DoRun (void)
205 {
210  Ptr<LteHelper> lteHelper = CreateObject<LteHelper> ();
211  // lteHelper->EnableLogComponents ();
212  lteHelper->EnableMacTraces ();
213  lteHelper->EnableRlcTraces ();
214  lteHelper->SetAttribute ("PathlossModel", StringValue ("ns3::HybridBuildingsPropagationLossModel"));
215 
216  // set frequency. This is important because it changes the behavior of the pathloss model
217  lteHelper->SetEnbDeviceAttribute ("DlEarfcn", UintegerValue (200));
218 
219 
220  // remove shadowing component
221  lteHelper->SetPathlossModelAttribute ("ShadowSigmaOutdoor", DoubleValue (0.0));
222  lteHelper->SetPathlossModelAttribute ("ShadowSigmaIndoor", DoubleValue (0.0));
223  lteHelper->SetPathlossModelAttribute ("ShadowSigmaExtWalls", DoubleValue (0.0));
224 
225  // Create Nodes: eNodeB and UE
226  NodeContainer enbNodes;
227  NodeContainer ueNodes;
228  enbNodes.Create (1);
229  ueNodes.Create (1);
230  NodeContainer allNodes = NodeContainer ( enbNodes, ueNodes );
231 
232  // Install Mobility Model
233  MobilityHelper mobility;
234  mobility.SetMobilityModel ("ns3::BuildingsMobilityModel");
235  mobility.Install (allNodes);
236 
237  // Create Devices and install them in the Nodes (eNB and UE)
238  NetDeviceContainer enbDevs;
239  NetDeviceContainer ueDevs;
240  lteHelper->SetSchedulerType ("ns3::RrFfMacScheduler");
241  enbDevs = lteHelper->InstallEnbDevice (enbNodes);
242  ueDevs = lteHelper->InstallUeDevice (ueNodes);
243 
244  Ptr<BuildingsMobilityModel> mm_enb = enbNodes.Get (0)->GetObject<BuildingsMobilityModel> ();
245  mm_enb->SetPosition (Vector (0.0, 0.0, 30.0));
246  Ptr<BuildingsMobilityModel> mm_ue = ueNodes.Get (0)->GetObject<BuildingsMobilityModel> ();
247  mm_ue->SetPosition (Vector (m_distance, 0.0, 1.0));
248 
249  Ptr<LteEnbNetDevice> lteEnbDev = enbDevs.Get (0)->GetObject<LteEnbNetDevice> ();
250  Ptr<LteEnbPhy> enbPhy = lteEnbDev->GetPhy ();
251  enbPhy->SetAttribute ("TxPower", DoubleValue (30.0));
252  enbPhy->SetAttribute ("NoiseFigure", DoubleValue (5.0));
253 
254  Ptr<LteUeNetDevice> lteUeDev = ueDevs.Get (0)->GetObject<LteUeNetDevice> ();
255  Ptr<LteUePhy> uePhy = lteUeDev->GetPhy ();
256  uePhy->SetAttribute ("TxPower", DoubleValue (23.0));
257  uePhy->SetAttribute ("NoiseFigure", DoubleValue (9.0));
258 
259 
260  // Attach a UE to a eNB
261  lteHelper->Attach (ueDevs, enbDevs.Get (0));
262 
263 
264  // Activate an EPS bearer
265  enum EpsBearer::Qci q = EpsBearer::GBR_CONV_VOICE;
266  EpsBearer bearer (q);
267  lteHelper->ActivateDataRadioBearer (ueDevs, bearer);
268 
269  // Use testing chunk processor in the PHY layer
270  // It will be used to test that the SNR is as intended
271  //Ptr<LtePhy> uePhy = ueDevs.Get (0)->GetObject<LteUeNetDevice> ()->GetPhy ()->GetObject<LtePhy> ();
272  Ptr<LteTestSinrChunkProcessor> testSinr = Create<LteTestSinrChunkProcessor> (uePhy);
273  uePhy->GetDownlinkSpectrumPhy ()->AddCtrlSinrChunkProcessor (testSinr);
274 
275 // Config::Connect ("/NodeList/0/DeviceList/0/LteEnbMac/DlScheduling",
276 // MakeBoundCallback (&LteTestPathlossDlSchedCallback, this));
277 
278  Simulator::Stop (Seconds (0.035));
279  Simulator::Run ();
280 
281  double calculatedSinrDb = 10.0 * std::log10 (testSinr->GetSinr ()->operator[] (0));
282  NS_LOG_INFO ("Distance " << m_distance << " Calculated SINR " << calculatedSinrDb << " ref " << m_snrDb);
283  Simulator::Destroy ();
284  NS_TEST_ASSERT_MSG_EQ_TOL (calculatedSinrDb, m_snrDb, 0.001, "Wrong SINR !");
285 }
286 
287 
288 void
289 LtePathlossModelSystemTestCase::DlScheduling (uint32_t frameNo, uint32_t subframeNo, uint16_t rnti,
290  uint8_t mcsTb1, uint16_t sizeTb1, uint8_t mcsTb2, uint16_t sizeTb2)
291 {
292  static bool firstTime = true;
293 
294  if ( firstTime )
295  {
296  firstTime = false;
297  NS_LOG_INFO ("SNR\tRef_MCS\tCalc_MCS");
298  }
299 
300 
301  // need to allow for RRC connection establishment + SRS transmission
302  if (Simulator::Now () > MilliSeconds (21))
303  {
304  NS_LOG_INFO (m_snrDb << "\t" << m_mcsIndex << "\t" << (uint16_t)mcsTb1);
305 
306  NS_TEST_ASSERT_MSG_EQ ((uint16_t)mcsTb1, m_mcsIndex, "Wrong MCS index");
307  }
308 }
309 
310 
311 } // namespace ns3
312