How to get the RSSI of APs at STAs?

[wuf...@gmail.com]

Hello,

I am using ns-3.28 to simulate the WiFi environment. I want to get the RSSI of APs in the environment at some STAs like smartphones. I have learned the MonitorSnifferRx, WifiTxVector and GetTxPowerLevel functions. But the output is 0. I don't know the reason. Can you help me? This is my code.

static void phyTrace(std::string context, Ptr<const Packet> packet,uint16_t channelFreqMhz, WifiTxVector wifiTx, MpduInfo mpduInfo, SignalNoiseDbm signalNoise){
  std::cout<<context<<"phyTrace...packet received with signal Dbm:"<<wifiTx.GetTxPowerLevel()<<std::endl;
}

int
main (int argc, char *argv[])
{
  Time::SetResolution (Time::NS);
 
  bool verbose = true;
  uint32_t nWifi = 5;

  NodeContainer wifiStaNodes;
  wifiStaNodes.Create (nWifi);  //STA
  NodeContainer wifiApNode;
  wifiApNode.Create(1);   //AP
   
  YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();  
  YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
  phy.SetChannel (channel.Create ());
 
  WifiHelper wifi;
  wifi.SetRemoteStationManager ("ns3::AarfWifiManager");  //wifihelper
 
  //mac
  WifiMacHelper mac;
  Ssid ssid = Ssid ("ns-3-aqiao");  
  mac.SetType ("ns3::StaWifiMac",    
               "Ssid", SsidValue (ssid),  
               "ActiveProbing", BooleanValue (false));  
 
  NetDeviceContainer staDevices;
  staDevices = wifi.Install (phy, mac, wifiStaNodes);
 
  mac.SetType ("ns3::ApWifiMac",  
               "Ssid", SsidValue (ssid));  
 
  NetDeviceContainer apDevices;
  apDevices = wifi.Install (phy, mac, wifiApNode);  


  // MobilityHelper
  MobilityHelper mobility;
 
  mobility.SetPositionAllocator ("ns3::GridPositionAllocator",
                                 "MinX", DoubleValue (0.0),// start in x
                                 "MinY", DoubleValue (0.0),// start in y
                                 "DeltaX", DoubleValue (5.0),// internal in x
                                 "DeltaY", DoubleValue (10.0),// internal in y
                                 "GridWidth", UintegerValue (2),//3 point every row
                                 "LayoutType", StringValue ("RowFirst"));//row first
   
  mobility.SetMobilityModel ("ns3::RandomWalk2dMobilityModel",  
                             "Bounds", RectangleValue (Rectangle (0,10, 0, 30)));  
  mobility.Install (wifiStaNodes);
   
  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
  mobility.Install (wifiApNode);
 
  InternetStackHelper stack;
  stack.Install (wifiApNode);
  stack.Install (wifiStaNodes);  
 
  Ipv4AddressHelper address;
 
  address.SetBase ("10.1.3.0", "255.255.255.0");
  Ipv4InterfaceContainer wifiInterfaces;
  wifiInterfaces=address.Assign (staDevices);
  address.Assign (apDevices);
 
  //application
  UdpEchoServerHelper echoServer (9);
 
  ApplicationContainer serverApps = echoServer.Install (wifiStaNodes.Get (0));
  serverApps.Start (Seconds (1.0));
  serverApps.Stop (Seconds (10.0));
 
  UdpEchoClientHelper echoClient (wifiInterfaces.GetAddress (0), 9);
  echoClient.SetAttribute ("MaxPackets", UintegerValue (5));
  echoClient.SetAttribute ("Interval", TimeValue (Seconds (1.0)));
  echoClient.SetAttribute ("PacketSize", UintegerValue (1024));
 
  ApplicationContainer clientApps =
    echoClient.Install (wifiStaNodes.Get (nWifi - 1));


  clientApps.Start (Seconds (2.0));
  clientApps.Stop (Seconds (10.0));
 
  Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
 
  Simulator::Stop (Seconds (10.0));
 
  phy.EnablePcap ("wifiwifi", apDevices.Get (0));

  AnimationInterface anim("1.xml");

  Config::Connect("/NodeList/0/DeviceList/0/$ns3::WifiNetDevice/Phy/MonitorSnifferRx",MakeCallback(&phyTrace));

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

Best regards.

[姜忠泰]

您好。请问解决了么？我也遇到相同的问题

<wuf...@gmail.com> 于2019年3月25日周一 下午4:46写道：

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