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