166 lines
5.3 KiB
C++
166 lines
5.3 KiB
C++
/*
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* Copyright (c) 2009 MIRKO BANCHI
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*
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* SPDX-License-Identifier: GPL-2.0-only
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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
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* 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 (minimum number of packets
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* to use block ack) to 2 so if there are in the BestEffort queue more than 2 packets a block ack
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* will be negotiated. We also set a timeout for block ack inactivity to 3 blocks of 1024
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* microseconds. This timer is 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/boolean.h"
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#include "ns3/command-line.h"
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#include "ns3/double.h"
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#include "ns3/internet-stack-helper.h"
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#include "ns3/ipv4-address-helper.h"
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#include "ns3/ipv4-global-routing-helper.h"
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#include "ns3/log.h"
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#include "ns3/mobility-helper.h"
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#include "ns3/mobility-model.h"
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#include "ns3/on-off-helper.h"
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#include "ns3/rectangle.h"
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#include "ns3/ssid.h"
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#include "ns3/string.h"
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#include "ns3/uinteger.h"
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#include "ns3/yans-wifi-channel.h"
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#include "ns3/yans-wifi-helper.h"
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using namespace ns3;
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NS_LOG_COMPONENT_DEFINE("Test-block-ack");
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int
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main(int argc, char* argv[])
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{
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CommandLine cmd(__FILE__);
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cmd.Parse(argc, argv);
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LogComponentEnable("QosTxop", 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;
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phy.SetPcapDataLinkType(WifiPhyHelper::DLT_IEEE802_11_RADIO);
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phy.SetChannel(channel.Create());
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WifiHelper wifi;
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wifi.SetStandard(WIFI_STANDARD_80211n);
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WifiMacHelper mac;
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/* disable fragmentation */
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wifi.SetRemoteStationManager("ns3::IdealWifiManager",
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"FragmentationThreshold",
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UintegerValue(2500));
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Ssid ssid("My-network");
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mac.SetType("ns3::StaWifiMac",
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"QosSupported",
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BooleanValue(true),
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"Ssid",
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SsidValue(ssid),
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/* setting blockack threshold for sta's BE queue */
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"BE_BlockAckThreshold",
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UintegerValue(2),
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/* setting block inactivity timeout to 3*1024 = 3072 microseconds */
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"BE_BlockAckInactivityTimeout",
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UintegerValue(3));
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NetDeviceContainer staDevice = wifi.Install(phy, mac, sta);
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mac.SetType("ns3::ApWifiMac",
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"QosSupported",
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BooleanValue(true),
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"Ssid",
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SsidValue(ssid),
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"BE_BlockAckThreshold",
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UintegerValue(0));
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NetDeviceContainer apDevice = wifi.Install(phy, mac, ap);
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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",
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DoubleValue(0.0),
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"MinY",
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DoubleValue(0.0),
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"DeltaX",
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DoubleValue(5.0),
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"DeltaY",
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DoubleValue(10.0),
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"GridWidth",
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UintegerValue(3),
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"LayoutType",
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StringValue("RowFirst"));
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mobility.SetMobilityModel("ns3::RandomWalk2dMobilityModel",
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"Bounds",
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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",
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Address(InetSocketAddress(apIf.GetAddress(0), port)));
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onOff.SetAttribute("DataRate", DataRateValue(dataRate));
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onOff.SetAttribute("OnTime", StringValue("ns3::ConstantRandomVariable[Constant=0.01]"));
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onOff.SetAttribute("OffTime", StringValue("ns3::ConstantRandomVariable[Constant=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));
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staApps.Stop(Seconds(10));
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Ipv4GlobalRoutingHelper::PopulateRoutingTables();
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Simulator::Stop(Seconds(10));
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phy.EnablePcap("test-blockack", 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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