application container on the AP node

[Raad Qandah]

Dear all,

the below code is a simplified version of the topology I am working on, I added it to the post so that my question will be very clear
my question is if I want to have a wifi network as below and I want each STAs to communicate with the AP node
in this case do I have to install an application container to the AP node??
thanks in advance


#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/applications-module.h"
#include "ns3/mobility-module.h"
#include "ns3/tools-module.h"
#include "ns3/wifi-module.h"

#include <iostream>

NS_LOG_COMPONENT_DEFINE ("Main");

using namespace ns3;


int main (int argc, char *argv[])
{

  WifiHelper wifi = WifiHelper::Default ();

  wifi.SetRemoteStationManager ("ns3::ArfWifiManager");
  wifi.SetStandard (WIFI_PHY_STANDARD_80211b);
  NqosWifiMacHelper mac = NqosWifiMacHelper::Default ();


  YansWifiPhyHelper phy1 = YansWifiPhyHelper::Default ();


  YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default ();
  mac.SetType ("ns3::AdhocWifiMac");

  NodeContainer c;
  c.Create (3);

  PacketSocketHelper packetSocket;
  packetSocket.Install (c);


  phy1.SetChannel (wifiChannel.Create ());


  NetDeviceContainer apDevices1 = wifi.Install (phy1, mac, c.Get(0));

  NetDeviceContainer staDevices1 = wifi.Install (phy1, mac, c.Get(1));

  NetDeviceContainer staDevices2 = wifi.Install (phy1, mac, c.Get(2));



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

  mobility.Install (c);


  PacketSocketAddress socket1;
  socket1.SetSingleDevice (staDevices1.Get (0)->GetIfIndex ());
  socket1.SetSingleDevice (staDevices2.Get (0)->GetIfIndex ());
  socket1.SetPhysicalAddress (apDevices1.Get (0)->GetAddress ());
  socket1.SetProtocol (1);

  OnOffHelper onoff1 ("ns3::PacketSocketFactory", Address (socket1));
  onoff1.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (250)));
  onoff1.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (0)));
  onoff1.SetAttribute ("DataRate", DataRateValue (DataRate ("500Mbps")));
  onoff1.SetAttribute ("PacketSize", UintegerValue (2000));

  ApplicationContainer apps1 = onoff1.Install (c.Get (0));
  apps1.Start (Seconds (0.5));
  apps1.Stop (Seconds (180));

  ApplicationContainer apps2 = onoff1.Install (c.Get (1));
  apps2.Start (Seconds (0.5));
  apps2.Stop (Seconds (180));

  ApplicationContainer apps3 = onoff1.Install (c.Get (2));
  apps3.Start (Seconds (0.5));
  apps3.Stop (Seconds (180));
 


  phy1.SetPcapDataLinkType(YansWifiPhyHelper::DLT_IEEE802_11_RADIO);

  phy1.EnablePcap ("apDevices1_topology8.1", apDevices1.Get(0));


  Simulator::Stop(Seconds(180));
  Simulator::Run ();
  Simulator::Destroy ();
  return 0;
}

[Raad Qandah]

could anyone help me with this post please
thanks

[Konstantinos]

The application container is an abstraction that can gather several applications.

What you need to install at the AP is a sink application (can be integrated in a container but not necessarily) to be able to receive the packets.

At the moment packets go to the AP, but it does not know what to do them, so they drop. 

See in the examples folder for ways to do that.

[Raad Qandah]

Much thanks for the reply Konstantinos I really appreciate it
but when I use " PacketSinkHelper (std::string protocol, Address address)" does the address has to be an IP address, can't I use a mac address?
note: I am not using any IP addresses in my topology therefore how can I add an app sink using a mac address??
Thanks :)

[Konstantinos]

The sink application is installed on one node and you put the address node of that node.
It just creates the necessary callbacks so that a packet that is received at the AP will be pushed up the the application layer of that node.

[RAAD QANDAH]

Yes, but what I want to do is to install the sink on a node without using an ip address is that possible??

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[Konstantinos]

The packet socket helper works with IP stack.You could try to implement your own sink application on the AP with sockets without IP address

[RAAD QANDAH]

so if I did the following:

PacketSocketAddress socket;
  socket.SetSingleDevice (staDevices.Get (0)->GetIfIndex ());
  socket.SetPhysicalAddress (apDevices.Get (0)->GetAddress ());
  socket.SetProtocol (1);

  OnOffHelper onoff ("ns3::PacketSocketFactory", Address (socket));
  onoff.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (250)));
  onoff.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (0)));
  onoff.SetAttribute ("DataRate", DataRateValue (DataRate (999999999)));
  onoff.SetAttribute ("PacketSize", UintegerValue (2000));

  ApplicationContainer apps = onoff.Install (c.Get (0));
  apps.Start (Seconds (0.5));
  apps.Stop (Seconds (60));


would that be enough to send packets from first node in staDevices (staDevices.Get(0))  to the first node in apDevices??
I really appreciate you help.

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[RAAD QANDAH]

Can any one help me of how can I set up a sink application on a node that does not have an IP address??
any link of info can be helpful
thanks in advance

[RAAD QANDAH]

Dear all,

Can any one help me of how can I set up a sink application on a node that does not have an IP address??
any link of info can be helpful
thanks in advance

[Hasib]

Hi!

Can you help me how I can communicate from a STA node from one wifi network to another wifi network thru APs? 

[RAAD QANDAH]

I think u will need a wired connection between the APs

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[Hasib]

Thanks for your reply! Yes, APs are connected thru wired connection. But my question is how do packets go from one STA of AP1 to another STA of AP2? 

Thanks again

[RAAD QANDAH]

Think u will have to give each STA an IP and send the packets to the appropriate one, I think there is a some how similar example in the NS3 tutorial

[Hasib]

Thanks brother!

Yes, I have given IP address to each node, but i could not manage to send packets! i was following the wifi-simple-adhoc-grid example. but no real success! it executes well! but i dont see anything in tracing or pcap file. Strange!

[RAAD QANDAH]

Well it has been a long while since i last used ns3, but u should post ur question on ns-3-users group, u will gt some help there

On Jun 12, 2013 9:31 PM, "Hasib" <hasibur....@gmail.com> wrote:

Thanks brother!

Yes, I have given IP address to each node, but i could manage to send packets! i was following the wifi-simple-adhoc-grid example. but no real success! it executes well! but i dont see anything in tracing or pcap file. Strange!