lena-simple-epc-backhaul.cc

Go to the documentation of this file.

/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2019 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Authors: Manuel Requena <manuel.requena@cttc.es>
 */

#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/internet-module.h"
#include "ns3/applications-module.h"
#include "ns3/mobility-module.h"
#include "ns3/config-store-module.h"
#include "ns3/lte-module.h"
// #include "ns3/gtk-config-store.h"

using namespace ns3;

NS_LOG_COMPONENT_DEFINE ("LenaSimpleEpcBackhaul");

int
main (int argc, char *argv[])
{
  uint16_t numNodePairs = 2;
  Time simTime = MilliSeconds (1900);
  double distance = 60.0;
  Time interPacketInterval = MilliSeconds (100);
  bool disableDl = false;
  bool disableUl = false;
  bool useHelper = false;

  // Command line arguments
  CommandLine cmd;
  cmd.AddValue ("numNodePairs", "Number of eNodeBs + UE pairs", numNodePairs);
  cmd.AddValue ("simTime", "Total duration of the simulation", simTime);
  cmd.AddValue ("distance", "Distance between eNBs [m]", distance);
  cmd.AddValue ("interPacketInterval", "Inter packet interval", interPacketInterval);
  cmd.AddValue ("disableDl", "Disable downlink data flows", disableDl);
  cmd.AddValue ("disableUl", "Disable uplink data flows", disableUl);
  cmd.AddValue ("useHelper", "Build the backhaul network using the helper or "
                             "it is built in the example", useHelper);
  cmd.Parse (argc, argv);

  ConfigStore inputConfig;
  inputConfig.ConfigureDefaults ();

  // parse again so you can override default values from the command line
  cmd.Parse(argc, argv);

  Ptr<LteHelper> lteHelper = CreateObject<LteHelper> ();
  Ptr<EpcHelper> epcHelper;
  if (!useHelper)
    {
      epcHelper = CreateObject<NoBackhaulEpcHelper> ();
    }
  else
    {
      epcHelper = CreateObject<PointToPointEpcHelper> ();
    }
  lteHelper->SetEpcHelper (epcHelper);

  Ptr<Node> pgw = epcHelper->GetPgwNode ();

  // Create a single RemoteHost
  NodeContainer remoteHostContainer;
  remoteHostContainer.Create (1);
  Ptr<Node> remoteHost = remoteHostContainer.Get (0);
  InternetStackHelper internet;
  internet.Install (remoteHostContainer);

  // Create the Internet
  PointToPointHelper p2ph;
  p2ph.SetDeviceAttribute ("DataRate", DataRateValue (DataRate ("100Gb/s")));
  p2ph.SetDeviceAttribute ("Mtu", UintegerValue (1500));
  p2ph.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (10)));
  NetDeviceContainer internetDevices = p2ph.Install (pgw, remoteHost);
  Ipv4AddressHelper ipv4h;
  ipv4h.SetBase ("1.0.0.0", "255.0.0.0");
  Ipv4InterfaceContainer internetIpIfaces = ipv4h.Assign (internetDevices);
  // interface 0 is localhost, 1 is the p2p device
  Ipv4Address remoteHostAddr = internetIpIfaces.GetAddress (1);

  Ipv4StaticRoutingHelper ipv4RoutingHelper;
  Ptr<Ipv4StaticRouting> remoteHostStaticRouting = ipv4RoutingHelper.GetStaticRouting (remoteHost->GetObject<Ipv4> ());
  remoteHostStaticRouting->AddNetworkRouteTo (Ipv4Address ("7.0.0.0"), Ipv4Mask ("255.0.0.0"), 1);

  NodeContainer ueNodes;
  NodeContainer enbNodes;
  enbNodes.Create (numNodePairs);
  ueNodes.Create (numNodePairs);

  // Install Mobility Model for eNBs and UEs
  Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
  for (uint16_t i = 0; i < numNodePairs; i++)
    {
      positionAlloc->Add (Vector (distance * i, 0, 0));
    }
  MobilityHelper mobility;
  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
  mobility.SetPositionAllocator (positionAlloc);
  mobility.Install (enbNodes);
  mobility.Install (ueNodes);

  // SGW node
  Ptr<Node> sgw = epcHelper->GetSgwNode ();

  // Install Mobility Model for SGW
  Ptr<ListPositionAllocator> positionAlloc2 = CreateObject<ListPositionAllocator> ();
  positionAlloc2->Add (Vector (0.0,  50.0, 0.0));
  MobilityHelper mobility2;
  mobility2.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
  mobility2.SetPositionAllocator (positionAlloc2);
  mobility2.Install (sgw);

  // Install LTE Devices to the nodes
  NetDeviceContainer enbLteDevs = lteHelper->InstallEnbDevice (enbNodes);
  NetDeviceContainer ueLteDevs = lteHelper->InstallUeDevice (ueNodes);

  if (!useHelper)
    {
      Ipv4AddressHelper s1uIpv4AddressHelper;

      // Create networks of the S1 interfaces
      s1uIpv4AddressHelper.SetBase ("10.0.0.0", "255.255.255.252");

      for (uint16_t i = 0; i < numNodePairs; ++i)
        {
          Ptr<Node> enb = enbNodes.Get (i);

          // Create a point to point link between the eNB and the SGW with
          // the corresponding new NetDevices on each side
          PointToPointHelper p2ph;
          DataRate s1uLinkDataRate = DataRate ("10Gb/s");
          uint16_t s1uLinkMtu = 2000;
          Time s1uLinkDelay = Time (0);
          p2ph.SetDeviceAttribute ("DataRate", DataRateValue (s1uLinkDataRate));
          p2ph.SetDeviceAttribute ("Mtu", UintegerValue (s1uLinkMtu));
          p2ph.SetChannelAttribute ("Delay", TimeValue (s1uLinkDelay));
          NetDeviceContainer sgwEnbDevices = p2ph.Install (sgw, enb);

          Ipv4InterfaceContainer sgwEnbIpIfaces = s1uIpv4AddressHelper.Assign (sgwEnbDevices);
          s1uIpv4AddressHelper.NewNetwork ();

          Ipv4Address sgwS1uAddress = sgwEnbIpIfaces.GetAddress (0);
          Ipv4Address enbS1uAddress = sgwEnbIpIfaces.GetAddress (1);

          // Create S1 interface between the SGW and the eNB
          epcHelper->AddS1Interface (enb, enbS1uAddress, sgwS1uAddress);
        }
    }

  // Install the IP stack on the UEs
  internet.Install (ueNodes);
  Ipv4InterfaceContainer ueIpIface;
  ueIpIface = epcHelper->AssignUeIpv4Address (NetDeviceContainer (ueLteDevs));
  // Assign IP address to UEs, and install applications
  for (uint32_t u = 0; u < ueNodes.GetN (); ++u)
    {
      Ptr<Node> ueNode = ueNodes.Get (u);
      // Set the default gateway for the UE
      Ptr<Ipv4StaticRouting> ueStaticRouting = ipv4RoutingHelper.GetStaticRouting (ueNode->GetObject<Ipv4> ());
      ueStaticRouting->SetDefaultRoute (epcHelper->GetUeDefaultGatewayAddress (), 1);
    }

  // Attach one UE per eNodeB
  for (uint16_t i = 0; i < numNodePairs; i++)
    {
      lteHelper->Attach (ueLteDevs.Get(i), enbLteDevs.Get(i));
      // side effect: the default EPS bearer will be activated
    }


  // Install and start applications on UEs and remote host
  uint16_t dlPort = 1100;
  uint16_t ulPort = 2000;
  ApplicationContainer clientApps;
  ApplicationContainer serverApps;
  for (uint32_t u = 0; u < ueNodes.GetN (); ++u)
    {
      if (!disableDl)
        {
          PacketSinkHelper dlPacketSinkHelper ("ns3::UdpSocketFactory", InetSocketAddress (Ipv4Address::GetAny (), dlPort));
          serverApps.Add (dlPacketSinkHelper.Install (ueNodes.Get (u)));

          UdpClientHelper dlClient (ueIpIface.GetAddress (u), dlPort);
          dlClient.SetAttribute ("Interval", TimeValue (interPacketInterval));
          dlClient.SetAttribute ("MaxPackets", UintegerValue (1000000));
          clientApps.Add (dlClient.Install (remoteHost));
        }

      if (!disableUl)
        {
          ++ulPort;
          PacketSinkHelper ulPacketSinkHelper ("ns3::UdpSocketFactory", InetSocketAddress (Ipv4Address::GetAny (), ulPort));
          serverApps.Add (ulPacketSinkHelper.Install (remoteHost));

          UdpClientHelper ulClient (remoteHostAddr, ulPort);
          ulClient.SetAttribute ("Interval", TimeValue (interPacketInterval));
          ulClient.SetAttribute ("MaxPackets", UintegerValue (1000000));
          clientApps.Add (ulClient.Install (ueNodes.Get(u)));
        }
    }

  serverApps.Start (MilliSeconds (500));
  clientApps.Start (MilliSeconds (500));
  lteHelper->EnableTraces ();
  // Uncomment to enable PCAP tracing
  //p2ph.EnablePcapAll("lena-simple-epc-backhaul");

  Simulator::Stop (simTime);
  Simulator::Run ();

  /*GtkConfigStore config;
  config.ConfigureAttributes();*/

  Simulator::Destroy ();
  return 0;
}