142 lines
4.9 KiB
C++
142 lines
4.9 KiB
C++
/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2009 MIRKO BANCHI
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Mirko Banchi <mk.banchi@gmail.com>
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*/
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/**
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* This is a simple example in order to show how 802.11n compressed block ack mechanism could be used.
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*
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* Network topology:
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*
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* Wifi 192.168.1.0
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*
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* AP
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* * *
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* | |
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* n1 n2
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*
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* In this example a QoS sta sends UDP datagram packets to access point. On the access point
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* there is no application installed so it replies to every packet with an ICMP frame. However
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* our attention is on originator sta n1. We have set blockAckThreshold (mininum number of packets to use
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* block ack) to 2 so if there are in the BestEffort queue more than 2 packets a block ack will be
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* negotiated. We also set a timeout for block ack inactivity to 3 blocks of 1024 microseconds. This timer is
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* reset when:
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* - the originator receives a block ack frame.
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* - the recipient receives a block ack request or a MPDU with ack policy Block Ack.
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*/
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#include "ns3/core-module.h"
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#include "ns3/simulator-module.h"
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#include "ns3/node-module.h"
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#include "ns3/helper-module.h"
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#include "ns3/global-routing-module.h"
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#include "ns3/wifi-module.h"
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#include "ns3/mobility-module.h"
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using namespace ns3;
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NS_LOG_COMPONENT_DEFINE ("Test-block-ack");
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int main (int argc, char const* argv[])
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{
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LogComponentEnable ("EdcaTxopN", LOG_LEVEL_DEBUG);
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LogComponentEnable ("BlockAckManager", LOG_LEVEL_INFO);
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Ptr<Node> sta = CreateObject<Node> ();
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Ptr<Node> ap = CreateObject<Node> ();
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YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();
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YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
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phy.SetChannel (channel.Create ());
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WifiHelper wifi = WifiHelper::Default ();
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QosWifiMacHelper mac = QosWifiMacHelper::Default ();
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/* disable fragmentation */
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wifi.SetRemoteStationManager ("ns3::AarfWifiManager", "FragmentationThreshold", UintegerValue (2500));
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Ssid ssid ("My-network");
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mac.SetType ("ns3::QstaWifiMac", "Ssid" , SsidValue (ssid), "ActiveProbing", BooleanValue (false));
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NetDeviceContainer staDevice = wifi.Install (phy, mac, sta);
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mac.SetType ("ns3::QapWifiMac", "Ssid", SsidValue (ssid), "BeaconGeneration", BooleanValue (true),
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"BeaconInterval", TimeValue (Seconds (2.5)));
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NetDeviceContainer apDevice = wifi.Install (phy, mac, ap);
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/* setting blockack threshold for sta's BE queue */
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Config::Set ("/NodeList/0/DeviceList/0/Mac/BE_EdcaTxopN/BlockAckThreshold", UintegerValue (2));
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/* setting block inactivity timeout to 3*1024 = 3072 microseconds */
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//Config::Set ("/NodeList/0/DeviceList/0/Mac/BE_EdcaTxopN/BlockAckInactivityTimeout", UintegerValue (3));
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/* Setting mobility model */
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MobilityHelper mobility;
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mobility.SetPositionAllocator ("ns3::GridPositionAllocator",
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"MinX", DoubleValue (0.0),
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"MinY", DoubleValue (0.0),
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"DeltaX", DoubleValue (5.0),
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"DeltaY", DoubleValue (10.0),
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"GridWidth", UintegerValue (3),
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"LayoutType", StringValue ("RowFirst"));
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mobility.SetMobilityModel ("ns3::RandomWalk2dMobilityModel",
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"Bounds", RectangleValue (Rectangle (-50, 50, -50, 50)));
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mobility.Install (sta);
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mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
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mobility.Install (ap);
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/* Internet stack*/
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InternetStackHelper stack;
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stack.Install (sta);
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stack.Install (ap);
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Ipv4AddressHelper address;
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address.SetBase ("192.168.1.0", "255.255.255.0");
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Ipv4InterfaceContainer staIf;
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Ipv4InterfaceContainer apIf;
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staIf = address.Assign (staDevice);
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apIf = address.Assign (apDevice);
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/* Setting applications */
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uint16_t port = 9;
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DataRate dataRate ("1Mb/s");
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OnOffHelper onOff ("ns3::UdpSocketFactory", Address (InetSocketAddress (apIf.GetAddress (0), port)));
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onOff.SetAttribute ("DataRate", DataRateValue (dataRate));
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onOff.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (0.01)));
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onOff.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (8)));
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onOff.SetAttribute ("PacketSize", UintegerValue (50));
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ApplicationContainer staApps = onOff.Install (sta);
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staApps.Start (Seconds (1.0));
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staApps.Stop (Seconds (10.0));
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Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
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Simulator::Stop (Seconds (10.0));
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phy.EnablePcap ("test-blockack-2", ap->GetId (), 0);
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Simulator::Run ();
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Simulator::Destroy ();
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return 0;
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}
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