ns-3仿真程序运行过程

一.程序first.cc,second.cc等
命令：sudo ./waf --run scratch/first

二.lte模块程序
例如程序：lena-dual-stripe.cc
首先，在lena-dual-stripe.cc程序文件中加入切换相关的函数。如下：

void
NotifyHandoverStartUe (std::string context,
                       uint64_t imsi,
                       uint16_t cellId,
                       uint16_t rnti,
                       uint16_t targetCellId)
{
  std::cout << Simulator::Now ().GetSeconds () << " " << context
            << " UE IMSI " << imsi
            << ": previously connected to CellId " << cellId
            << " with RNTI " << rnti
            << ", doing handover to CellId " << targetCellId
            << std::endl;
}

void
NotifyHandoverEndOkUe (std::string context,
                       uint64_t imsi,
                       uint16_t cellId,
                       uint16_t rnti)
{
  std::cout << Simulator::Now ().GetSeconds () << " " << context
            << " UE IMSI " << imsi
            << ": successful handover to CellId " << cellId
            << " with RNTI " << rnti
            << std::endl;
}

void
NotifyHandoverStartEnb (std::string context,
                        uint64_t imsi,
                        uint16_t cellId,
                        uint16_t rnti,
                        uint16_t targetCellId)
{
  std::cout << Simulator::Now ().GetSeconds () << " " << context
            << " eNB CellId " << cellId
            << ": start handover of UE with IMSI " << imsi
            << " RNTI " << rnti
            << " to CellId " << targetCellId
            << std::endl;
}

void
NotifyHandoverEndOkEnb (std::string context,
                        uint64_t imsi,
                        uint16_t cellId,
                        uint16_t rnti)
{
  std::cout << Simulator::Now ().GetSeconds () << " " << context
            << " eNB CellId " << cellId
            << ": completed handover of UE with IMSI " << imsi
            << " RNTI " << rnti
            << std::endl;
}

然后，在scratch文件中新建一个命令脚本文件saa（命名随意），如下：

set view map;
set xlabel "X"
set ylabel "Y"
set cblabel "SINR (dB)"
unset key
plot "rem.out" using ($1):($2):(10*log10($4)) with image

将其中的rem.out改为lena-dual-stripe.rem，执行命令：
gnuplot -p enbs.txt ues.txt buildings.txt saa

再然后执行“运行lena-dual-stripe"的命令如下：

./waf --run="lena-dual-stripe
  --simTime=50 --nBlocks=0 --nMacroEnbSites=7 --nMacroEnbSitesX=2
  --epc=1 --useUdp=0 --outdoorUeMinSpeed=16.6667 --outdoorUeMaxSpeed=16.6667
  --ns3::LteHelper::HandoverAlgorithm=ns3::NoOpHandoverAlgorithm
  --ns3::RadioBearerStatsCalculator::DlRlcOutputFilename=no-op-DlRlcStats.txt
  --ns3::RadioBearerStatsCalculator::UlRlcOutputFilename=no-op-UlRlcStats.txt
  --ns3::PhyStatsCalculator::DlRsrpSinrFilename=no-op-DlRsrpSinrStats.txt
  --ns3::PhyStatsCalculator::UlSinrFilename=no-op-UlSinrStats.txt
  --RngRun=1" > no-op.txt

./waf --run="lena-dual-stripe
  --simTime=50 --nBlocks=0 --nMacroEnbSites=7 --nMacroEnbSitesX=2
  --epc=1 --useUdp=0 --outdoorUeMinSpeed=16.6667 --outdoorUeMaxSpeed=16.6667
  --ns3::LteHelper::HandoverAlgorithm=ns3::A3RsrpHandoverAlgorithm
  --ns3::RadioBearerStatsCalculator::DlRlcOutputFilename=a3-rsrp-DlRlcStats.txt
  --ns3::RadioBearerStatsCalculator::UlRlcOutputFilename=a3-rsrp-UlRlcStats.txt
  --ns3::PhyStatsCalculator::DlRsrpSinrFilename=a3-rsrp-DlRsrpSinrStats.txt
  --ns3::PhyStatsCalculator::UlSinrFilename=a3-rsrp-UlSinrStats.txt
  --RngRun=1" > a3-rsrp.txt

./waf --run="lena-dual-stripe
  --simTime=50 --nBlocks=0 --nMacroEnbSites=7 --nMacroEnbSitesX=2
  --epc=1 --useUdp=0 --outdoorUeMinSpeed=16.6667 --outdoorUeMaxSpeed=16.6667
  --ns3::LteHelper::HandoverAlgorithm=ns3::A2A4RsrqHandoverAlgorithm
  --ns3::RadioBearerStatsCalculator::DlRlcOutputFilename=a2-a4-rsrq-DlRlcStats.txt
  --ns3::RadioBearerStatsCalculator::UlRlcOutputFilename=a2-a4-rsrq-UlRlcStats.txt
  --ns3::PhyStatsCalculator::DlRsrpSinrFilename=a2-a4-rsrq-DlRsrpSinrStats.txt
  --ns3::PhyStatsCalculator::UlSinrFilename=a2-a4-rsrq-UlSinrStats.txt
  --RngRun=1" > a2-a4-rsrq.txt

其中，第一个没有切换，第二个带有切换，一些参数设置可在该命令中设置。若想看可视化仿真结果，则在…–RngRun=1">a2-a4-rsrq.txt修改为…–RngRun=1" --vis

详细过程参考设计文档：https://www.nsnam.org/docs/release/3.28/models/singlehtml/index.html#document-lte