NS3 LTE网络仿真程序，只含LTE无线接入网（无EPC）
NS3 LTE网络仿真程序
一 只含LTE无线接入网（无EPC）
首先看最简单情形，编写思路：
创建节点-->安装最简单的移动模型-->安装LTE设置-->关联UE与eNB-->最后激活UE-eNB之间无线承载-->设置仿真参数-->无仿真输出-->结束
#include"ns3/core-module.h"
#include"ns3/network-module.h"
#include"ns3/mobility-module.h"
#include"ns3/lte-module.h"
using namespace ns3;
int main(int argc,char*argv[]){
//create a ltehelper object
Ptr lte=CreateObject();
//为UE eNB创建节点
NodeContainer enbNodes;
enbNodes.Create(1);
NodeContainer ueNodes;
ueNodes.Create(2);
//为节点配置移动模型
MobilityHelper mobility;
mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
mobility.Install(enbNodes);
mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
mobility.Install(ueNodes);
//上述节点都在（0,0，0）处
//装载LTE设备及信道
NetDeviceContainer enbdevice;
enbdevice=lte->InstallEnbDevice(enbNodes);
NetDeviceContainer uedevice;
uedevice=lte->InstallUeDevice(ueNodes);
//关联UE 和基站eNB，根据eNB配置来配置每一个UE并创建UE-ENB之间的RRC连接
lte->Attach(uedevice,enbdevice.Get(0));
//激活EPS承载包括UE-ENB之间的无线承载
enum EpsBearer::Qci q=EpsBearer::GBR_CONV_VOICE;
EpsBearer bearer(q);
lte->ActivateDataRadioBearer(uedevice,bearer);
//设置仿真参数
Simulator::Stop(Seconds(0.005));
Simulator::Run();
Simulator::Destroy();
return 0;
} #include"ns3/core-module.h"
#include"ns3/network-module.h"
#include"ns3/mobility-module.h"
#include"ns3/lte-module.h"
#include"ns3/buildings-helper.h"
#include"ns3/config-store.h"
/*
* create an LTE-only simulation without EPC
*/
using namespace ns3;
NS_LOG_COMPONENT_DEFINE("LteFirstExample");
int main(int argc,char*argv[]){
//加入命令行以方便修改参数
CommandLine cmd;
cmd.Parse(argc,argv);
ConfigStore inputConfig;
inputConfig.ConfigureDefaults();//注意先Load再save
cmd.Parse(argc,argv);
NS_LOG_INFO("Create LTE NET");
LogComponentEnable("LteFirstExample",LOG_LEVEL_INFO);
//create a ltehelper object epc object
Ptr lte=CreateObject();
/*lte->SetFadingModel("ns3::TraceFadingLossModel");
lte->SetFadingModelAttribute("TraceFilename",StringValue("src/lte/model/fading-traces/fading_trace_EPA_3kmph.fad"));
lte->SetFadingModelAttribute("TraceLength",TimeValue(Seconds(10.0)));
lte->SetFadingModelAttribute("SamplesNum",UintegerValue(10000));
lte->SetFadingModelAttribute("WindowSize",TimeValue(Seconds(0.5)));
lte->SetFadingModelAttribute("RbNum",UintegerValue(100));*/
//为UE eNB创建节点
NodeContainer enbNodes;
enbNodes.Create(1);
NodeContainer ueNodes;
ueNodes.Create(2);
//为节点配置移动模型
MobilityHelper mobility;
mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
mobility.Install(enbNodes);//初始位置(0,0,0)
//mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
//mobility.Install(ueNodes);
mobility.SetPositionAllocator ("ns3::RandomDiscPositionAllocator",
"X", StringValue ("100.0"),
"Y", StringValue ("100.0"),
"Rho", StringValue ("ns3::UniformRandomVariable[Min=0|Max=30]"));
mobility.SetMobilityModel ("ns3::RandomWalk2dMobilityModel",
"Mode", StringValue ("Time"),
"Time", StringValue ("2s"),
"Speed", StringValue ("ns3::ConstantRandomVariable[Constant=1.0]"),
"Bounds", StringValue ("0|200|0|200"));
mobility.Install(ueNodes);
BuildingsHelper::Install (ueNodes);
// Default scheduler is PF, uncomment to use RR
//lteHelper->SetSchedulerType ("ns3::RrFfMacScheduler");
//装载LTE协议栈
NetDeviceContainer enbdevice;
enbdevice=lte->InstallEnbDevice(enbNodes);
NetDeviceContainer uedevice;
uedevice=lte->InstallUeDevice(ueNodes);
//关联UE 和基站eNB，根据eNB配置来配置每一个UE并创建UE-ENB之间的RRC连接
lte->Attach(uedevice,enbdevice.Get(0));
//激活EPS承载包括UE-ENB之间的无线承载
enum EpsBearer::Qci q=EpsBearer::GBR_CONV_VOICE;
EpsBearer bearer(q);
lte->ActivateDataRadioBearer(uedevice,bearer);
// configure all the simulation scenario here...
//输出PHY MAC RLC PDCP层KPI信息
lte->EnablePhyTraces ();
lte->EnableMacTraces ();
lte->EnableRlcTraces ();
lte->EnablePdcpTraces ();
//设置仿真参数
Simulator::Stop(Seconds(0.005));
Simulator::Run();
Simulator::Destroy();
return 0;
} 在ns运行路径内建立一个input-defaults.txt，内容如下:
default ns3::LteHelper::Scheduler "ns3::PfFfMacScheduler"
default ns3::LteHelper::PathlossModel "ns3::FriisSpectrumPropagationLossModel"
default ns3::LteEnbNetDevice::UlBandwidth "25"
default ns3::LteEnbNetDevice::DlBandwidth "25"
default ns3::LteEnbNetDevice::DlEarfcn "100"
default ns3::LteEnbNetDevice::UlEarfcn "18100"
default ns3::LteUePhy::TxPower "10"
default ns3::LteUePhy::NoiseFigure "9"
default ns3::LteEnbPhy::TxPower "30"
default ns3::LteEnbPhy::NoiseFigure "5"然后先Load:
./waf --command-template="%s --ns3::ConfigStore::Filename=input-defaults.txt --ns3::ConfigStore::Mode=Load --ns3::ConfigStore::FileFormat=RawText" --run src/lte/examples/lte-sim-with-input
./waf --command-template="%s --ns3::ConfigStore::Filename=input-defaults.txt --ns3::ConfigStore::Mode=Save --ns3::ConfigStore::FileFormat=RawText" --run src/lte/examples/lte-sim-with-input
这样会将所有给定仿真中默认值放入带输入文件input-defaults.txtx中。