如何在 csma 堆栈上安装 wifi 堆栈

问题描述

我想实现csma+wifi模拟。
所以，我正在尝试在 csma 节点上添加 wifi 站堆栈。
但它不起作用..
我该如何解决这个问题？\

我一边看例子（Third.cc），一边写了这段代码。
这个原因，出现错误，我认为在csma堆栈上创建wifi站堆栈。
因此，堆栈在 csma+wifi 节点 (n3) 上重复。\

有没有办法同时在节点（n3）上堆叠两个堆栈？

n3：csma 和 wifi 站节点

我会在这里上传我的代码。

#include "ns3/core-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/network-module.h"
#include "ns3/applications-module.h"
#include "ns3/mobility-module.h"
#include "ns3/csma-module.h"
#include "ns3/internet-module.h"
#include "ns3/yans-wifi-helper.h"
#include "ns3/ssid.h"
#include "ns3/ipv4-global-routing-helper.h"

using namespace ns3;

NS_LOG_COMPONENT_DEFINE ("Test");

int main (int argc,char *argv [])
{
  uint32_t nWifi = 1;
  uint32_t nCsma = 5;

      LogComponentEnable ("UdpEchoClientApplication",LOG_LEVEL_INFO);
      LogComponentEnable ("UdpEchoServerApplication",LOG_LEVEL_INFO);

  NodeContainer csmaNodes;
  csmaNodes.Create (nCsma);

  CsmaHelper csma;
  csma.SetChannelAttribute ("DataRate",StringValue ("100Mbps"));
  csma.SetChannelAttribute ("Delay",TimeValue (NanoSeconds (6560)));

  NetDeviceContainer csmaDevices;
  csmaDevices = csma.Install (csmaNodes);

  NodeContainer wifiStaNodes;
  wifiStaNodes.Add (csmaNodes.Get (2));
  wifiStaNodes.Add (csmaNodes.Get (3));

  NodeContainer wifiApNode;
  wifiApNode.Create (nWifi);

  YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();
  YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
  phy.SetChannel (channel.Create ());

  WifiHelper wifi;
  wifi.SetRemoteStationManager ("ns3::AarfWifiManager");

  WifiMacHelper mac;
  Ssid ssid = Ssid ("ns-3-ssid");
  mac.SetType ("ns3::StaWifiMac","Ssid",SsidValue (ssid),"ActiveProbing",BooleanValue (false));

  NetDeviceContainer staDevices;
  staDevices = wifi.Install (phy,mac,wifiStaNodes);

  mac.SetType ("ns3::ApWifiMac",SsidValue (ssid));

  NetDeviceContainer apDevices;
  apDevices = wifi.Install (phy,wifiApNode);

  MobilityHelper mobility;

  mobility.SetPositionAllocator ("ns3::GridPositionAllocator","MinX",DoubleValue (0.0),"MinY","DeltaX",DoubleValue (5.0),"DeltaY",DoubleValue (10.0),"GridWidth",UintegerValue (3),"LayoutType",StringValue ("RowFirst"));

  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
  mobility.Install (wifiStaNodes);
  mobility.Install (wifiApNode);

  InternetStackHelper stack;
  stack.Install (csmaNodes);
  stack.Install (wifiApNode);
  //stack.Install (wifiStaNodes);

  Ipv4AddressHelper address;

  address.SetBase ("10.1.1.0","255.255.255.0");
  Ipv4InterfaceContainer csmaInterfaces;
  csmaInterfaces = address.Assign (csmaDevices);

  //address.SetBase ("10.1.2.0","255.255.255.0");
  //Ipv4InterfaceContainer wifistaInterfaces;
  //wifistaInterfaces = address.Assign (staDevices);

  address.SetBase ("10.1.3.0","255.255.255.0");
  Ipv4InterfaceContainer wifiapInterfaces;
  wifiapInterfaces = address.Assign (apDevices);
  
  // csma application
  UdpEchoServerHelper echoServer (9);

  ApplicationContainer serverApps = echoServer.Install (csmaNodes.Get (0));
  serverApps.Start (Seconds (1.0));
  serverApps.Stop (Seconds (10.0));

  UdpEchoClientHelper echoClient (csmaInterfaces.GetAddress (0),9);
  echoClient.SetAttribute ("MaxPackets",UintegerValue (1));
  echoClient.SetAttribute ("Interval",TimeValue (Seconds (1.0)));
  echoClient.SetAttribute ("PacketSize",UintegerValue (1024));

  ApplicationContainer clientApps = echoClient.Install (csmaNodes.Get (4));
  clientApps.Start (Seconds (2.0));
  clientApps.Stop (Seconds (10.0));


  // wifi application
  UdpEchoServerHelper wifiechoServer (15);

  ApplicationContainer wifiserverApps = wifiechoServer.Install (wifiApNode.Get (0)); 
  wifiserverApps.Start (Seconds (11.0));
  wifiserverApps.Stop (Seconds (16.0));

  UdpEchoClientHelper wifiechoClient (wifiapInterfaces.GetAddress (0),15);
  wifiechoClient.SetAttribute ("MaxPackets",UintegerValue (1));
  wifiechoClient.SetAttribute ("Interval",TimeValue (Seconds (1.0)));
  wifiechoClient.SetAttribute ("PacketSize",UintegerValue (1024));

  ApplicationContainer wificlientApps = wifiechoClient.Install (wifiStaNodes.Get (1));
  wificlientApps.Start (Seconds (12.0));
  wificlientApps.Stop (Seconds (16.0));

  Ipv4GlobalRoutingHelper::PopulateRoutingTables ();

  Simulator::Stop (Seconds (16.0));

  Simulator::Run ();
  Simulator::Destroy ();
  return 0;
}

解决方法

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c++ns-3 udp