350 lines
14 KiB
C++
350 lines
14 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
|
|
/*
|
|
* Copyright (c) 2016 Sébastien Deronne
|
|
*
|
|
* 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
|
|
*
|
|
* Author: Sébastien Deronne <sebastien.deronne@gmail.com>
|
|
*/
|
|
|
|
#include "ns3/core-module.h"
|
|
#include "ns3/network-module.h"
|
|
#include "ns3/applications-module.h"
|
|
#include "ns3/wifi-module.h"
|
|
#include "ns3/mobility-module.h"
|
|
#include "ns3/internet-module.h"
|
|
|
|
// This is an example that illustrates 802.11 QoS for different Access Categories.
|
|
// It defines 4 independant Wi-Fi networks (working on different logical channels
|
|
// on the same "ns3::YansWifiPhy" channel object).
|
|
// Each network contains one access point and one station. Each station continuously
|
|
// transmits data packets to its respective AP.
|
|
//
|
|
// Network topology (numbers in parentheses are channel numbers):
|
|
//
|
|
// BSS A (36) BSS B (40) BSS C (44) BSS D (48)
|
|
// * * * * * * * *
|
|
// | | | | | | | |
|
|
// AP A STA A AP B STA B AP C STA C AP D STA D
|
|
//
|
|
// The configuration is the following on the 4 networks:
|
|
// - STA A sends AC_BE traffic to AP A with default AC_BE TXOP value of 0 (1 MSDU);
|
|
// - STA B sends AC_BE traffic to AP B with non-default AC_BE TXOP of 3.008 ms;
|
|
// - STA C sends AC_VI traffic to AP C with default AC_VI TXOP of 3.008 ms;
|
|
// - STA D sends AC_VI traffic to AP D with non-default AC_VI TXOP value of 0 (1 MSDU);
|
|
//
|
|
// The user can select the distance between the stations and the APs, can enable/disable the RTS/CTS mechanism
|
|
// and can choose the payload size and the simulation duration.
|
|
// Example: ./waf --run "80211e-txop --distance=10 --enableRts=0 --simulationTime=20 --payloadSize=1000"
|
|
//
|
|
// The output prints the throughput measured for the 4 cases/networks decribed above. When TXOP is enabled, results show
|
|
// increased throughput since the channel is granted for a longer duration. TXOP is enabled by default for AC_VI and AC_VO,
|
|
// so that they can use the channel for a longer duration than AC_BE and AC_BK.
|
|
|
|
using namespace ns3;
|
|
|
|
NS_LOG_COMPONENT_DEFINE ("80211eTxop");
|
|
|
|
int main (int argc, char *argv[])
|
|
{
|
|
uint32_t payloadSize = 1472; //bytes
|
|
uint64_t simulationTime = 10; //seconds
|
|
double distance = 5; //meters
|
|
bool enablePcap = 0;
|
|
bool verifyResults = 0; //used for regression
|
|
|
|
CommandLine cmd;
|
|
cmd.AddValue ("payloadSize", "Payload size in bytes", payloadSize);
|
|
cmd.AddValue ("simulationTime", "Simulation time in seconds", simulationTime);
|
|
cmd.AddValue ("distance", "Distance in meters between the station and the access point", distance);
|
|
cmd.AddValue ("enablePcap", "Enable/disable pcap file generation", enablePcap);
|
|
cmd.AddValue ("verifyResults", "Enable/disable results verification at the end of the simulation", verifyResults);
|
|
cmd.Parse (argc, argv);
|
|
|
|
NodeContainer wifiStaNodes;
|
|
wifiStaNodes.Create (4);
|
|
NodeContainer wifiApNodes;
|
|
wifiApNodes.Create (4);
|
|
|
|
YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();
|
|
YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
|
|
phy.SetPcapDataLinkType (YansWifiPhyHelper::DLT_IEEE802_11_RADIO);
|
|
phy.SetChannel (channel.Create ());
|
|
|
|
WifiHelper wifi; //the default standard of 802.11a will be selected by this helper since the program doesn't specify another one
|
|
wifi.SetRemoteStationManager ("ns3::IdealWifiManager");
|
|
WifiMacHelper mac;
|
|
|
|
NetDeviceContainer staDeviceA, staDeviceB, staDeviceC, staDeviceD, apDeviceA, apDeviceB, apDeviceC, apDeviceD;
|
|
Ssid ssid;
|
|
|
|
//Network A
|
|
ssid = Ssid ("network-A");
|
|
phy.Set ("ChannelNumber", UintegerValue (36));
|
|
mac.SetType ("ns3::StaWifiMac",
|
|
"QosSupported", BooleanValue (true),
|
|
"Ssid", SsidValue (ssid));
|
|
staDeviceA = wifi.Install (phy, mac, wifiStaNodes.Get (0));
|
|
|
|
mac.SetType ("ns3::ApWifiMac",
|
|
"QosSupported", BooleanValue (true),
|
|
"Ssid", SsidValue (ssid),
|
|
"EnableBeaconJitter", BooleanValue (false));
|
|
apDeviceA = wifi.Install (phy, mac, wifiApNodes.Get (0));
|
|
|
|
//Network B
|
|
ssid = Ssid ("network-B");
|
|
phy.Set ("ChannelNumber", UintegerValue (40));
|
|
mac.SetType ("ns3::StaWifiMac",
|
|
"QosSupported", BooleanValue (true),
|
|
"Ssid", SsidValue (ssid));
|
|
|
|
staDeviceB = wifi.Install (phy, mac, wifiStaNodes.Get (1));
|
|
|
|
mac.SetType ("ns3::ApWifiMac",
|
|
"QosSupported", BooleanValue (true),
|
|
"Ssid", SsidValue (ssid),
|
|
"EnableBeaconJitter", BooleanValue (false));
|
|
apDeviceB = wifi.Install (phy, mac, wifiApNodes.Get (1));
|
|
|
|
//Modify EDCA configuration (TXOP limit) for AC_BE
|
|
Ptr<NetDevice> dev = wifiApNodes.Get (1)->GetDevice (0);
|
|
Ptr<WifiNetDevice> wifi_dev = DynamicCast<WifiNetDevice> (dev);
|
|
Ptr<WifiMac> wifi_mac = wifi_dev->GetMac ();
|
|
PointerValue ptr;
|
|
Ptr<EdcaTxopN> edca;
|
|
wifi_mac->GetAttribute ("BE_EdcaTxopN", ptr);
|
|
edca = ptr.Get<EdcaTxopN> ();
|
|
edca->SetTxopLimit (MicroSeconds (3008));
|
|
|
|
//Network C
|
|
ssid = Ssid ("network-C");
|
|
phy.Set ("ChannelNumber", UintegerValue (44));
|
|
mac.SetType ("ns3::StaWifiMac",
|
|
"QosSupported", BooleanValue (true),
|
|
"Ssid", SsidValue (ssid));
|
|
|
|
staDeviceC = wifi.Install (phy, mac, wifiStaNodes.Get (2));
|
|
|
|
mac.SetType ("ns3::ApWifiMac",
|
|
"QosSupported", BooleanValue (true),
|
|
"Ssid", SsidValue (ssid),
|
|
"EnableBeaconJitter", BooleanValue (false));
|
|
apDeviceC = wifi.Install (phy, mac, wifiApNodes.Get (2));
|
|
|
|
//Network D
|
|
ssid = Ssid ("network-D");
|
|
phy.Set ("ChannelNumber", UintegerValue (48));
|
|
mac.SetType ("ns3::StaWifiMac",
|
|
"QosSupported", BooleanValue (true),
|
|
"Ssid", SsidValue (ssid));
|
|
|
|
staDeviceD = wifi.Install (phy, mac, wifiStaNodes.Get (3));
|
|
|
|
mac.SetType ("ns3::ApWifiMac",
|
|
"QosSupported", BooleanValue (true),
|
|
"Ssid", SsidValue (ssid),
|
|
"EnableBeaconJitter", BooleanValue (false));
|
|
apDeviceD = wifi.Install (phy, mac, wifiApNodes.Get (3));
|
|
|
|
//Modify EDCA configuration (TXOP limit) for AC_VO
|
|
dev = wifiApNodes.Get (3)->GetDevice (0);
|
|
wifi_dev = DynamicCast<WifiNetDevice> (dev);
|
|
wifi_mac = wifi_dev->GetMac ();
|
|
wifi_mac->GetAttribute ("VI_EdcaTxopN", ptr);
|
|
edca = ptr.Get<EdcaTxopN> ();
|
|
edca->SetTxopLimit (MicroSeconds (0));
|
|
|
|
/* Setting mobility model */
|
|
MobilityHelper mobility;
|
|
Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
|
|
mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
|
|
|
|
//Set position for APs
|
|
positionAlloc->Add (Vector (0.0, 0.0, 0.0));
|
|
positionAlloc->Add (Vector (10.0, 0.0, 0.0));
|
|
positionAlloc->Add (Vector (20.0, 0.0, 0.0));
|
|
positionAlloc->Add (Vector (30.0, 0.0, 0.0));
|
|
//Set position for STAs
|
|
positionAlloc->Add (Vector (distance, 0.0, 0.0));
|
|
positionAlloc->Add (Vector (10 + distance, 0.0, 0.0));
|
|
positionAlloc->Add (Vector (20 + distance, 0.0, 0.0));
|
|
positionAlloc->Add (Vector (30 + distance, 0.0, 0.0));
|
|
//Remark: while we set these positions 10 meters apart, the networks do not interact
|
|
//and the only variable that affects transmission performance is the distance.
|
|
|
|
mobility.SetPositionAllocator (positionAlloc);
|
|
mobility.Install (wifiApNodes);
|
|
mobility.Install (wifiStaNodes);
|
|
|
|
/* Internet stack */
|
|
InternetStackHelper stack;
|
|
stack.Install (wifiApNodes);
|
|
stack.Install (wifiStaNodes);
|
|
|
|
Ipv4AddressHelper address;
|
|
address.SetBase ("192.168.1.0", "255.255.255.0");
|
|
Ipv4InterfaceContainer StaInterfaceA;
|
|
StaInterfaceA = address.Assign (staDeviceA);
|
|
Ipv4InterfaceContainer ApInterfaceA;
|
|
ApInterfaceA = address.Assign (apDeviceA);
|
|
|
|
address.SetBase ("192.168.2.0", "255.255.255.0");
|
|
Ipv4InterfaceContainer StaInterfaceB;
|
|
StaInterfaceB = address.Assign (staDeviceB);
|
|
Ipv4InterfaceContainer ApInterfaceB;
|
|
ApInterfaceB = address.Assign (apDeviceB);
|
|
|
|
address.SetBase ("192.168.3.0", "255.255.255.0");
|
|
Ipv4InterfaceContainer StaInterfaceC;
|
|
StaInterfaceC = address.Assign (staDeviceC);
|
|
Ipv4InterfaceContainer ApInterfaceC;
|
|
ApInterfaceC = address.Assign (apDeviceC);
|
|
|
|
address.SetBase ("192.168.4.0", "255.255.255.0");
|
|
Ipv4InterfaceContainer StaInterfaceD;
|
|
StaInterfaceD = address.Assign (staDeviceD);
|
|
Ipv4InterfaceContainer ApInterfaceD;
|
|
ApInterfaceD = address.Assign (apDeviceD);
|
|
|
|
/* Setting applications */
|
|
uint16_t port = 5001;
|
|
UdpServerHelper serverA (port);
|
|
ApplicationContainer serverAppA = serverA.Install (wifiApNodes.Get (0));
|
|
serverAppA.Start (Seconds (0.0));
|
|
serverAppA.Stop (Seconds (simulationTime + 1));
|
|
|
|
InetSocketAddress destA (ApInterfaceA.GetAddress (0), port);
|
|
destA.SetTos (0x70); //AC_BE
|
|
|
|
OnOffHelper clientA ("ns3::UdpSocketFactory", destA);
|
|
clientA.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
|
|
clientA.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
|
|
clientA.SetAttribute ("DataRate", StringValue ("100000kb/s"));
|
|
clientA.SetAttribute ("PacketSize", UintegerValue (payloadSize));
|
|
|
|
ApplicationContainer clientAppA = clientA.Install (wifiStaNodes.Get (0));
|
|
clientAppA.Start (Seconds (1.0));
|
|
clientAppA.Stop (Seconds (simulationTime + 1));
|
|
|
|
UdpServerHelper serverB (port);
|
|
ApplicationContainer serverAppB = serverB.Install (wifiApNodes.Get (1));
|
|
serverAppB.Start (Seconds (0.0));
|
|
serverAppB.Stop (Seconds (simulationTime + 1));
|
|
|
|
InetSocketAddress destB (ApInterfaceB.GetAddress (0), port);
|
|
destB.SetTos (0x70); //AC_BE
|
|
|
|
OnOffHelper clientB ("ns3::UdpSocketFactory", destB);
|
|
clientB.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
|
|
clientB.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
|
|
clientB.SetAttribute ("DataRate", StringValue ("100000kb/s"));
|
|
clientB.SetAttribute ("PacketSize", UintegerValue (payloadSize));
|
|
|
|
ApplicationContainer clientAppB = clientB.Install (wifiStaNodes.Get (1));
|
|
clientAppB.Start (Seconds (1.0));
|
|
clientAppB.Stop (Seconds (simulationTime + 1));
|
|
|
|
UdpServerHelper serverC (port);
|
|
ApplicationContainer serverAppC = serverC.Install (wifiApNodes.Get (2));
|
|
serverAppC.Start (Seconds (0.0));
|
|
serverAppC.Stop (Seconds (simulationTime + 1));
|
|
|
|
InetSocketAddress destC (ApInterfaceC.GetAddress (0), port);
|
|
destC.SetTos (0xb8); //AC_VI
|
|
|
|
OnOffHelper clientC ("ns3::UdpSocketFactory", destC);
|
|
clientC.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
|
|
clientC.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
|
|
clientC.SetAttribute ("DataRate", StringValue ("100000kb/s"));
|
|
clientC.SetAttribute ("PacketSize", UintegerValue (payloadSize));
|
|
|
|
ApplicationContainer clientAppC = clientC.Install (wifiStaNodes.Get (2));
|
|
clientAppC.Start (Seconds (1.0));
|
|
clientAppC.Stop (Seconds (simulationTime + 1));
|
|
|
|
UdpServerHelper serverD (port);
|
|
ApplicationContainer serverAppD = serverD.Install (wifiApNodes.Get (3));
|
|
serverAppD.Start (Seconds (0.0));
|
|
serverAppD.Stop (Seconds (simulationTime + 1));
|
|
|
|
InetSocketAddress destD (ApInterfaceD.GetAddress (0), port);
|
|
destD.SetTos (0xb8); //AC_VI
|
|
|
|
OnOffHelper clientD ("ns3::UdpSocketFactory", destD);
|
|
clientD.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
|
|
clientD.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
|
|
clientD.SetAttribute ("DataRate", StringValue ("100000kb/s"));
|
|
clientD.SetAttribute ("PacketSize", UintegerValue (payloadSize));
|
|
|
|
ApplicationContainer clientAppD = clientD.Install (wifiStaNodes.Get (3));
|
|
clientAppD.Start (Seconds (1.0));
|
|
clientAppD.Stop (Seconds (simulationTime + 1));
|
|
|
|
if (enablePcap)
|
|
{
|
|
phy.EnablePcap ("AP_A", apDeviceA.Get (0));
|
|
phy.EnablePcap ("STA_A", staDeviceA.Get (0));
|
|
phy.EnablePcap ("AP_B", apDeviceB.Get (0));
|
|
phy.EnablePcap ("STA_B", staDeviceB.Get (0));
|
|
phy.EnablePcap ("AP_C", apDeviceC.Get (0));
|
|
phy.EnablePcap ("STA_C", staDeviceC.Get (0));
|
|
phy.EnablePcap ("AP_D", apDeviceD.Get (0));
|
|
phy.EnablePcap ("STA_D", staDeviceD.Get (0));
|
|
}
|
|
|
|
Simulator::Stop (Seconds (simulationTime + 1));
|
|
Simulator::Run ();
|
|
Simulator::Destroy ();
|
|
|
|
/* Show results */
|
|
uint32_t totalPacketsThrough = DynamicCast<UdpServer> (serverAppA.Get (0))->GetReceived ();
|
|
double throughput = totalPacketsThrough * payloadSize * 8 / (simulationTime * 1000000.0);
|
|
std::cout << "Throughput for AC_BE with default TXOP limit (0ms): " << throughput << " Mbit/s" << '\n';
|
|
if (verifyResults && (throughput < 28 || throughput > 29))
|
|
{
|
|
NS_LOG_ERROR ("Obtained throughput " << throughput << " is not in the expected boundaries!");
|
|
exit (1);
|
|
}
|
|
|
|
totalPacketsThrough = DynamicCast<UdpServer> (serverAppB.Get (0))->GetReceived ();
|
|
throughput = totalPacketsThrough * payloadSize * 8 / (simulationTime * 1000000.0);
|
|
std::cout << "Throughput for AC_BE with non-default TXOP limit (3.008ms): " << throughput << " Mbit/s" << '\n';
|
|
if (verifyResults && (throughput < 35.5 || throughput > 36.5))
|
|
{
|
|
NS_LOG_ERROR ("Obtained throughput " << throughput << " is not in the expected boundaries!");
|
|
exit (1);
|
|
}
|
|
|
|
totalPacketsThrough = DynamicCast<UdpServer> (serverAppC.Get (0))->GetReceived ();
|
|
throughput = totalPacketsThrough * payloadSize * 8 / (simulationTime * 1000000.0);
|
|
std::cout << "Throughput for AC_VI with default TXOP limit (3.008ms): " << throughput << " Mbit/s" << '\n';
|
|
if (verifyResults && (throughput < 36 || throughput > 37))
|
|
{
|
|
NS_LOG_ERROR ("Obtained throughput " << throughput << " is not in the expected boundaries!");
|
|
exit (1);
|
|
}
|
|
|
|
totalPacketsThrough = DynamicCast<UdpServer> (serverAppD.Get (0))->GetReceived ();
|
|
throughput = totalPacketsThrough * payloadSize * 8 / (simulationTime * 1000000.0);
|
|
std::cout << "Throughput for AC_VI with non-default TXOP limit (0ms): " << throughput << " Mbit/s" << '\n';
|
|
if (verifyResults && (throughput < 31.5 || throughput > 32.5))
|
|
{
|
|
NS_LOG_ERROR ("Obtained throughput " << throughput << " is not in the expected boundaries!");
|
|
exit (1);
|
|
}
|
|
|
|
return 0;
|
|
}
|