wifi-test.cc

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/*
 * Copyright (c) 2005,2006 INRIA
 *               2010      NICTA
 *
 * 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
 *
 * Authors: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
 *          Quincy Tse <quincy.tse@nicta.com.au>
 *          Sébastien Deronne <sebastien.deronne@gmail.com>
 */
 
#include "ns3/adhoc-wifi-mac.h"
#include "ns3/ap-wifi-mac.h"
#include "ns3/config.h"
#include "ns3/constant-position-mobility-model.h"
#include "ns3/error-model.h"
#include "ns3/fcfs-wifi-queue-scheduler.h"
#include "ns3/frame-exchange-manager.h"
#include "ns3/ht-configuration.h"
#include "ns3/interference-helper.h"
#include "ns3/mgt-headers.h"
#include "ns3/mobility-helper.h"
#include "ns3/multi-model-spectrum-channel.h"
#include "ns3/packet-socket-client.h"
#include "ns3/packet-socket-helper.h"
#include "ns3/packet-socket-server.h"
#include "ns3/pointer.h"
#include "ns3/propagation-loss-model.h"
#include "ns3/rng-seed-manager.h"
#include "ns3/socket.h"
#include "ns3/spectrum-wifi-helper.h"
#include "ns3/string.h"
#include "ns3/test.h"
#include "ns3/vht-phy.h"
#include "ns3/waypoint-mobility-model.h"
#include "ns3/wifi-default-ack-manager.h"
#include "ns3/wifi-default-assoc-manager.h"
#include "ns3/wifi-default-protection-manager.h"
#include "ns3/wifi-net-device.h"
#include "ns3/wifi-ppdu.h"
#include "ns3/wifi-psdu.h"
#include "ns3/wifi-spectrum-signal-parameters.h"
#include "ns3/yans-error-rate-model.h"
#include "ns3/yans-wifi-helper.h"
#include "ns3/yans-wifi-phy.h"
 
using namespace ns3;
 
// Helper function to assign streams to random variables, to control
// randomness in the tests
static void
AssignWifiRandomStreams(Ptr<WifiMac> mac, int64_t stream)
{
    int64_t currentStream = stream;
    PointerValue ptr;
    if (!mac->GetQosSupported())
    {
        mac->GetAttribute("Txop", ptr);
        Ptr<Txop> txop = ptr.Get<Txop>();
        currentStream += txop->AssignStreams(currentStream);
    }
    else
    {
        mac->GetAttribute("VO_Txop", ptr);
        Ptr<QosTxop> vo_txop = ptr.Get<QosTxop>();
        currentStream += vo_txop->AssignStreams(currentStream);
 
        mac->GetAttribute("VI_Txop", ptr);
        Ptr<QosTxop> vi_txop = ptr.Get<QosTxop>();
        currentStream += vi_txop->AssignStreams(currentStream);
 
        mac->GetAttribute("BE_Txop", ptr);
        Ptr<QosTxop> be_txop = ptr.Get<QosTxop>();
        currentStream += be_txop->AssignStreams(currentStream);
 
        mac->GetAttribute("BK_Txop", ptr);
        Ptr<QosTxop> bk_txop = ptr.Get<QosTxop>();
        bk_txop->AssignStreams(currentStream);
    }
}
 
class WifiTest : public TestCase
{
  public:
    WifiTest();
 
    void DoRun() override;
 
  private:
    void RunOne();
    void CreateOne(Vector pos, Ptr<YansWifiChannel> channel);
    void SendOnePacket(Ptr<WifiNetDevice> dev);
 
    ObjectFactory m_manager;   
    ObjectFactory m_mac;       
    ObjectFactory m_propDelay; 
};
 
WifiTest::WifiTest()
    : TestCase("Wifi")
{
}
 
void
WifiTest::SendOnePacket(Ptr<WifiNetDevice> dev)
{
    Ptr<Packet> p = Create<Packet>();
    dev->Send(p, dev->GetBroadcast(), 1);
}
 
void
WifiTest::CreateOne(Vector pos, Ptr<YansWifiChannel> channel)
{
    Ptr<Node> node = CreateObject<Node>();
    Ptr<WifiNetDevice> dev = CreateObject<WifiNetDevice>();
    node->AddDevice(dev);
 
    auto mobility = CreateObject<ConstantPositionMobilityModel>();
    auto phy = CreateObject<YansWifiPhy>();
    Ptr<InterferenceHelper> interferenceHelper = CreateObject<InterferenceHelper>();
    phy->SetInterferenceHelper(interferenceHelper);
    auto error = CreateObject<YansErrorRateModel>();
    phy->SetErrorRateModel(error);
    phy->SetChannel(channel);
    phy->SetDevice(dev);
    phy->ConfigureStandard(WIFI_STANDARD_80211a);
    dev->SetPhy(phy);
    auto manager = m_manager.Create<WifiRemoteStationManager>();
    dev->SetRemoteStationManager(manager);
 
    Ptr<WifiMac> mac = m_mac.Create<WifiMac>();
    mac->SetDevice(dev);
    mac->SetAddress(Mac48Address::Allocate());
    dev->SetMac(mac);
    mac->ConfigureStandard(WIFI_STANDARD_80211a);
    if (mac->GetTypeOfStation() == STA)
    {
        StaticCast<StaWifiMac>(mac)->SetAssocManager(CreateObject<WifiDefaultAssocManager>());
    }
    mac->SetMacQueueScheduler(CreateObject<FcfsWifiQueueScheduler>());
    Ptr<FrameExchangeManager> fem = mac->GetFrameExchangeManager();
    Ptr<WifiProtectionManager> protectionManager = CreateObject<WifiDefaultProtectionManager>();
    protectionManager->SetWifiMac(mac);
    fem->SetProtectionManager(protectionManager);
    Ptr<WifiAckManager> ackManager = CreateObject<WifiDefaultAckManager>();
    ackManager->SetWifiMac(mac);
    fem->SetAckManager(ackManager);
 
    mobility->SetPosition(pos);
    node->AggregateObject(mobility);
 
    Simulator::Schedule(Seconds(1.0), &WifiTest::SendOnePacket, this, dev);
}
 
void
WifiTest::RunOne()
{
    Ptr<YansWifiChannel> channel = CreateObject<YansWifiChannel>();
    Ptr<PropagationDelayModel> propDelay = m_propDelay.Create<PropagationDelayModel>();
    Ptr<PropagationLossModel> propLoss = CreateObject<RandomPropagationLossModel>();
    channel->SetPropagationDelayModel(propDelay);
    channel->SetPropagationLossModel(propLoss);
 
    CreateOne(Vector(0.0, 0.0, 0.0), channel);
    CreateOne(Vector(5.0, 0.0, 0.0), channel);
    CreateOne(Vector(5.0, 0.0, 0.0), channel);
 
    Simulator::Stop(Seconds(10.0));
 
    Simulator::Run();
    Simulator::Destroy();
}
 
void
WifiTest::DoRun()
{
    m_mac.SetTypeId("ns3::AdhocWifiMac");
    m_propDelay.SetTypeId("ns3::ConstantSpeedPropagationDelayModel");
 
    m_manager.SetTypeId("ns3::ArfWifiManager");
    RunOne();
    m_manager.SetTypeId("ns3::AarfWifiManager");
    RunOne();
    m_manager.SetTypeId("ns3::ConstantRateWifiManager");
    RunOne();
    m_manager.SetTypeId("ns3::OnoeWifiManager");
    RunOne();
    m_manager.SetTypeId("ns3::AmrrWifiManager");
    RunOne();
    m_manager.SetTypeId("ns3::IdealWifiManager");
    RunOne();
 
    m_mac.SetTypeId("ns3::AdhocWifiMac");
    RunOne();
    m_mac.SetTypeId("ns3::ApWifiMac");
    RunOne();
    m_mac.SetTypeId("ns3::StaWifiMac");
    RunOne();
 
    m_propDelay.SetTypeId("ns3::RandomPropagationDelayModel");
    m_mac.SetTypeId("ns3::AdhocWifiMac");
    RunOne();
}
 
class QosUtilsIsOldPacketTest : public TestCase
{
  public:
    QosUtilsIsOldPacketTest()
        : TestCase("QosUtilsIsOldPacket")
    {
    }
 
    void DoRun() override
    {
        // startingSeq=0, seqNum=2047
        NS_TEST_EXPECT_MSG_EQ(QosUtilsIsOldPacket(0, 2047),
                              false,
                              "2047 is new in comparison to 0");
        // startingSeq=0, seqNum=2048
        NS_TEST_EXPECT_MSG_EQ(QosUtilsIsOldPacket(0, 2048), true, "2048 is old in comparison to 0");
        // startingSeq=2048, seqNum=0
        NS_TEST_EXPECT_MSG_EQ(QosUtilsIsOldPacket(2048, 0), true, "0 is old in comparison to 2048");
        // startingSeq=4095, seqNum=0
        NS_TEST_EXPECT_MSG_EQ(QosUtilsIsOldPacket(4095, 0),
                              false,
                              "0 is new in comparison to 4095");
        // startingSeq=0, seqNum=4095
        NS_TEST_EXPECT_MSG_EQ(QosUtilsIsOldPacket(0, 4095), true, "4095 is old in comparison to 0");
        // startingSeq=4095 seqNum=2047
        NS_TEST_EXPECT_MSG_EQ(QosUtilsIsOldPacket(4095, 2047),
                              true,
                              "2047 is old in comparison to 4095");
        // startingSeq=2048 seqNum=4095
        NS_TEST_EXPECT_MSG_EQ(QosUtilsIsOldPacket(2048, 4095),
                              false,
                              "4095 is new in comparison to 2048");
        // startingSeq=2049 seqNum=0
        NS_TEST_EXPECT_MSG_EQ(QosUtilsIsOldPacket(2049, 0),
                              false,
                              "0 is new in comparison to 2049");
    }
};
 
class InterferenceHelperSequenceTest : public TestCase
{
  public:
    InterferenceHelperSequenceTest();
 
    void DoRun() override;
 
  private:
    Ptr<Node> CreateOne(Vector pos, Ptr<YansWifiChannel> channel);
    void SendOnePacket(Ptr<WifiNetDevice> dev);
    void SwitchCh(Ptr<WifiNetDevice> dev);
 
    ObjectFactory m_manager;   
    ObjectFactory m_mac;       
    ObjectFactory m_propDelay; 
};
 
InterferenceHelperSequenceTest::InterferenceHelperSequenceTest()
    : TestCase("InterferenceHelperSequence")
{
}
 
void
InterferenceHelperSequenceTest::SendOnePacket(Ptr<WifiNetDevice> dev)
{
    Ptr<Packet> p = Create<Packet>(1000);
    dev->Send(p, dev->GetBroadcast(), 1);
}
 
void
InterferenceHelperSequenceTest::SwitchCh(Ptr<WifiNetDevice> dev)
{
    Ptr<WifiPhy> p = dev->GetPhy();
    p->SetOperatingChannel(WifiPhy::ChannelTuple{40, 0, (int)(WIFI_PHY_BAND_5GHZ), 0});
}
 
Ptr<Node>
InterferenceHelperSequenceTest::CreateOne(Vector pos, Ptr<YansWifiChannel> channel)
{
    Ptr<Node> node = CreateObject<Node>();
    Ptr<WifiNetDevice> dev = CreateObject<WifiNetDevice>();
    node->AddDevice(dev);
 
    auto mobility = CreateObject<ConstantPositionMobilityModel>();
    auto phy = CreateObject<YansWifiPhy>();
    Ptr<InterferenceHelper> interferenceHelper = CreateObject<InterferenceHelper>();
    phy->SetInterferenceHelper(interferenceHelper);
    auto error = CreateObject<YansErrorRateModel>();
    phy->SetErrorRateModel(error);
    phy->SetChannel(channel);
    phy->SetDevice(dev);
    phy->SetMobility(mobility);
    phy->ConfigureStandard(WIFI_STANDARD_80211a);
    dev->SetPhy(phy);
    auto manager = m_manager.Create<WifiRemoteStationManager>();
    dev->SetRemoteStationManager(manager);
 
    Ptr<WifiMac> mac = m_mac.Create<WifiMac>();
    mac->SetDevice(dev);
    mac->SetAddress(Mac48Address::Allocate());
    dev->SetMac(mac);
    mac->ConfigureStandard(WIFI_STANDARD_80211a);
    mac->SetMacQueueScheduler(CreateObject<FcfsWifiQueueScheduler>());
    Ptr<FrameExchangeManager> fem = mac->GetFrameExchangeManager();
    Ptr<WifiProtectionManager> protectionManager = CreateObject<WifiDefaultProtectionManager>();
    protectionManager->SetWifiMac(mac);
    fem->SetProtectionManager(protectionManager);
    Ptr<WifiAckManager> ackManager = CreateObject<WifiDefaultAckManager>();
    ackManager->SetWifiMac(mac);
    fem->SetAckManager(ackManager);
 
    mobility->SetPosition(pos);
    node->AggregateObject(mobility);
 
    return node;
}
 
void
InterferenceHelperSequenceTest::DoRun()
{
    m_mac.SetTypeId("ns3::AdhocWifiMac");
    m_propDelay.SetTypeId("ns3::ConstantSpeedPropagationDelayModel");
    m_manager.SetTypeId("ns3::ConstantRateWifiManager");
 
    Ptr<YansWifiChannel> channel = CreateObject<YansWifiChannel>();
    Ptr<PropagationDelayModel> propDelay = m_propDelay.Create<PropagationDelayModel>();
    Ptr<MatrixPropagationLossModel> propLoss = CreateObject<MatrixPropagationLossModel>();
    channel->SetPropagationDelayModel(propDelay);
    channel->SetPropagationLossModel(propLoss);
 
    Ptr<Node> rxOnly = CreateOne(Vector(0.0, 0.0, 0.0), channel);
    Ptr<Node> senderA = CreateOne(Vector(5.0, 0.0, 0.0), channel);
    Ptr<Node> senderB = CreateOne(Vector(-5.0, 0.0, 0.0), channel);
 
    propLoss->SetLoss(senderB->GetObject<MobilityModel>(),
                      rxOnly->GetObject<MobilityModel>(),
                      0,
                      true);
    propLoss->SetDefaultLoss(999);
 
    Simulator::Schedule(Seconds(1.0),
                        &InterferenceHelperSequenceTest::SendOnePacket,
                        this,
                        DynamicCast<WifiNetDevice>(senderB->GetDevice(0)));
 
    Simulator::Schedule(Seconds(1.0000001),
                        &InterferenceHelperSequenceTest::SwitchCh,
                        this,
                        DynamicCast<WifiNetDevice>(rxOnly->GetDevice(0)));
 
    Simulator::Schedule(Seconds(5.0),
                        &InterferenceHelperSequenceTest::SendOnePacket,
                        this,
                        DynamicCast<WifiNetDevice>(senderA->GetDevice(0)));
 
    Simulator::Schedule(Seconds(7.0),
                        &InterferenceHelperSequenceTest::SendOnePacket,
                        this,
                        DynamicCast<WifiNetDevice>(senderB->GetDevice(0)));
 
    Simulator::Stop(Seconds(100.0));
    Simulator::Run();
 
    Simulator::Destroy();
}
 
//-----------------------------------------------------------------------------
class DcfImmediateAccessBroadcastTestCase : public TestCase
{
  public:
    DcfImmediateAccessBroadcastTestCase();
 
    void DoRun() override;
 
  private:
    void SendOnePacket(Ptr<WifiNetDevice> dev);
 
    ObjectFactory m_manager;   
    ObjectFactory m_mac;       
    ObjectFactory m_propDelay; 
 
    Time m_firstTransmissionTime;  
    Time m_secondTransmissionTime; 
    unsigned int m_numSentPackets; 
 
    void NotifyPhyTxBegin(Ptr<const Packet> p, double txPowerW);
};
 
DcfImmediateAccessBroadcastTestCase::DcfImmediateAccessBroadcastTestCase()
    : TestCase("Test case for DCF immediate access with broadcast frames")
{
}
 
void
DcfImmediateAccessBroadcastTestCase::NotifyPhyTxBegin(Ptr<const Packet> p, double txPowerW)
{
    if (m_numSentPackets == 0)
    {
        m_numSentPackets++;
        m_firstTransmissionTime = Simulator::Now();
    }
    else if (m_numSentPackets == 1)
    {
        m_secondTransmissionTime = Simulator::Now();
    }
}
 
void
DcfImmediateAccessBroadcastTestCase::SendOnePacket(Ptr<WifiNetDevice> dev)
{
    Ptr<Packet> p = Create<Packet>(1000);
    dev->Send(p, dev->GetBroadcast(), 1);
}
 
void
DcfImmediateAccessBroadcastTestCase::DoRun()
{
    m_mac.SetTypeId("ns3::AdhocWifiMac");
    m_propDelay.SetTypeId("ns3::ConstantSpeedPropagationDelayModel");
    m_manager.SetTypeId("ns3::ConstantRateWifiManager");
 
    // Assign a seed and run number, and later fix the assignment of streams to
    // WiFi random variables, so that the first backoff used is one slot
    RngSeedManager::SetSeed(1);
    RngSeedManager::SetRun(40); // a value of 17 will result in zero slots
 
    Ptr<YansWifiChannel> channel = CreateObject<YansWifiChannel>();
    Ptr<PropagationDelayModel> propDelay = m_propDelay.Create<PropagationDelayModel>();
    Ptr<PropagationLossModel> propLoss = CreateObject<RandomPropagationLossModel>();
    channel->SetPropagationDelayModel(propDelay);
    channel->SetPropagationLossModel(propLoss);
 
    Ptr<Node> txNode = CreateObject<Node>();
    Ptr<WifiNetDevice> txDev = CreateObject<WifiNetDevice>();
 
    Ptr<ConstantPositionMobilityModel> txMobility = CreateObject<ConstantPositionMobilityModel>();
    Ptr<YansWifiPhy> txPhy = CreateObject<YansWifiPhy>();
    Ptr<InterferenceHelper> txInterferenceHelper = CreateObject<InterferenceHelper>();
    txPhy->SetInterferenceHelper(txInterferenceHelper);
    Ptr<ErrorRateModel> txError = CreateObject<YansErrorRateModel>();
    txPhy->SetErrorRateModel(txError);
    txPhy->SetChannel(channel);
    txPhy->SetDevice(txDev);
    txPhy->SetMobility(txMobility);
    txPhy->ConfigureStandard(WIFI_STANDARD_80211a);
 
    txPhy->TraceConnectWithoutContext(
        "PhyTxBegin",
        MakeCallback(&DcfImmediateAccessBroadcastTestCase::NotifyPhyTxBegin, this));
 
    txMobility->SetPosition(Vector(0.0, 0.0, 0.0));
    txNode->AggregateObject(txMobility);
    txDev->SetPhy(txPhy);
    txDev->SetRemoteStationManager(m_manager.Create<WifiRemoteStationManager>());
    txNode->AddDevice(txDev);
 
    auto txMac = m_mac.Create<WifiMac>();
    txMac->SetDevice(txDev);
    txMac->SetAddress(Mac48Address::Allocate());
    txDev->SetMac(txMac);
    txMac->ConfigureStandard(WIFI_STANDARD_80211a);
    txMac->SetMacQueueScheduler(CreateObject<FcfsWifiQueueScheduler>());
    auto fem = txMac->GetFrameExchangeManager();
    auto protectionManager = CreateObject<WifiDefaultProtectionManager>();
    protectionManager->SetWifiMac(txMac);
    fem->SetProtectionManager(protectionManager);
    auto ackManager = CreateObject<WifiDefaultAckManager>();
    ackManager->SetWifiMac(txMac);
    fem->SetAckManager(ackManager);
 
    // Fix the stream assignment to the Dcf Txop objects (backoffs)
    // The below stream assignment will result in the Txop object
    // using a backoff value of zero for this test when the
    // Txop::EndTxNoAck() calls to StartBackoffNow()
    AssignWifiRandomStreams(txMac, 23);
 
    m_firstTransmissionTime = Seconds(0.0);
    m_secondTransmissionTime = Seconds(0.0);
    m_numSentPackets = 0;
 
    Simulator::Schedule(Seconds(1.0),
                        &DcfImmediateAccessBroadcastTestCase::SendOnePacket,
                        this,
                        txDev);
    Simulator::Schedule(Seconds(1.0) + MicroSeconds(1),
                        &DcfImmediateAccessBroadcastTestCase::SendOnePacket,
                        this,
                        txDev);
 
    Simulator::Stop(Seconds(2.0));
    Simulator::Run();
    Simulator::Destroy();
 
    // First packet is transmitted a DIFS after the packet is queued. A DIFS
    // is 2 slots (2 * 9 = 18 us) plus a SIFS (16 us), i.e., 34 us
    Time expectedFirstTransmissionTime = Seconds(1.0) + MicroSeconds(34);
 
    // First packet has 1408 us of transmit time.   Slot time is 9 us.
    // Backoff is 1 slots.  SIFS is 16 us.  DIFS is 2 slots = 18 us.
    // Should send next packet at 1408 us + (1 * 9 us) + 16 us + (2 * 9) us
    // 1451 us after the first one.
    uint32_t expectedWait1 = 1408 + (1 * 9) + 16 + (2 * 9);
    Time expectedSecondTransmissionTime =
        expectedFirstTransmissionTime + MicroSeconds(expectedWait1);
    NS_TEST_ASSERT_MSG_EQ(m_firstTransmissionTime,
                          expectedFirstTransmissionTime,
                          "The first transmission time not correct!");
 
    NS_TEST_ASSERT_MSG_EQ(m_secondTransmissionTime,
                          expectedSecondTransmissionTime,
                          "The second transmission time not correct!");
}
 
//-----------------------------------------------------------------------------
class Bug730TestCase : public TestCase
{
  public:
    Bug730TestCase();
    ~Bug730TestCase() override;
 
    void DoRun() override;
 
  private:
    uint32_t m_received; 
 
    void Receive(std::string context, Ptr<const Packet> p, const Address& adr);
};
 
Bug730TestCase::Bug730TestCase()
    : TestCase("Test case for Bug 730"),
      m_received(0)
{
}
 
Bug730TestCase::~Bug730TestCase()
{
}
 
void
Bug730TestCase::Receive(std::string context, Ptr<const Packet> p, const Address& adr)
{
    if ((p->GetSize() == 1460) && (Simulator::Now() > Seconds(20)))
    {
        m_received++;
    }
}
 
void
Bug730TestCase::DoRun()
{
    m_received = 0;
 
    NodeContainer wifiStaNode;
    wifiStaNode.Create(1);
 
    NodeContainer wifiApNode;
    wifiApNode.Create(1);
 
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    YansWifiPhyHelper phy;
    phy.SetChannel(channel.Create());
 
    WifiHelper wifi;
    wifi.SetStandard(WIFI_STANDARD_80211b);
    wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager",
                                 "DataMode",
                                 StringValue("DsssRate1Mbps"),
                                 "ControlMode",
                                 StringValue("DsssRate1Mbps"));
 
    WifiMacHelper mac;
    Ssid ssid = Ssid("ns-3-ssid");
    mac.SetType("ns3::StaWifiMac", "Ssid", SsidValue(ssid), "ActiveProbing", BooleanValue(false));
 
    NetDeviceContainer staDevices;
    staDevices = wifi.Install(phy, mac, wifiStaNode);
 
    mac.SetType("ns3::ApWifiMac", "Ssid", SsidValue(ssid), "BeaconGeneration", BooleanValue(true));
 
    NetDeviceContainer apDevices;
    apDevices = wifi.Install(phy, mac, wifiApNode);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
 
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));
    positionAlloc->Add(Vector(1.0, 0.0, 0.0));
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(wifiApNode);
    mobility.Install(wifiStaNode);
 
    Ptr<WifiNetDevice> ap_device = DynamicCast<WifiNetDevice>(apDevices.Get(0));
    Ptr<WifiNetDevice> sta_device = DynamicCast<WifiNetDevice>(staDevices.Get(0));
 
    PacketSocketAddress socket;
    socket.SetSingleDevice(sta_device->GetIfIndex());
    socket.SetPhysicalAddress(ap_device->GetAddress());
    socket.SetProtocol(1);
 
    // give packet socket powers to nodes.
    PacketSocketHelper packetSocket;
    packetSocket.Install(wifiStaNode);
    packetSocket.Install(wifiApNode);
 
    Ptr<PacketSocketClient> client = CreateObject<PacketSocketClient>();
    client->SetAttribute("PacketSize", UintegerValue(1460));
    client->SetRemote(socket);
    wifiStaNode.Get(0)->AddApplication(client);
    client->SetStartTime(Seconds(1));
    client->SetStopTime(Seconds(51.0));
 
    Ptr<PacketSocketServer> server = CreateObject<PacketSocketServer>();
    server->SetLocal(socket);
    wifiApNode.Get(0)->AddApplication(server);
    server->SetStartTime(Seconds(0.0));
    server->SetStopTime(Seconds(52.0));
 
    Config::Connect("/NodeList/*/ApplicationList/0/$ns3::PacketSocketServer/Rx",
                    MakeCallback(&Bug730TestCase::Receive, this));
 
    Simulator::Schedule(Seconds(10.0),
                        Config::Set,
                        "/NodeList/0/DeviceList/0/RemoteStationManager/FragmentationThreshold",
                        StringValue("800"));
 
    Simulator::Stop(Seconds(55));
    Simulator::Run();
 
    Simulator::Destroy();
 
    bool result = (m_received > 0);
    NS_TEST_ASSERT_MSG_EQ(
        result,
        true,
        "packet reception unexpectedly stopped after adapting fragmentation threshold!");
}
 
//-----------------------------------------------------------------------------
class QosFragmentationTestCase : public TestCase
{
  public:
    QosFragmentationTestCase();
    ~QosFragmentationTestCase() override;
 
    void DoRun() override;
 
  private:
    uint32_t m_received;  
    uint32_t m_fragments; 
 
    void Receive(std::string context, Ptr<const Packet> p, const Address& adr);
 
    void Transmit(std::string context, Ptr<const Packet> p, double power);
};
 
QosFragmentationTestCase::QosFragmentationTestCase()
    : TestCase("Test case for fragmentation with QoS stations"),
      m_received(0),
      m_fragments(0)
{
}
 
QosFragmentationTestCase::~QosFragmentationTestCase()
{
}
 
void
QosFragmentationTestCase::Receive(std::string context, Ptr<const Packet> p, const Address& adr)
{
    if (p->GetSize() == 1400)
    {
        m_received++;
    }
}
 
void
QosFragmentationTestCase::Transmit(std::string context, Ptr<const Packet> p, double power)
{
    WifiMacHeader hdr;
    p->PeekHeader(hdr);
    if (hdr.IsQosData())
    {
        NS_TEST_EXPECT_MSG_LT_OR_EQ(p->GetSize(), 400, "Unexpected fragment size");
        m_fragments++;
    }
}
 
void
QosFragmentationTestCase::DoRun()
{
    NodeContainer wifiStaNode;
    wifiStaNode.Create(1);
 
    NodeContainer wifiApNode;
    wifiApNode.Create(1);
 
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    YansWifiPhyHelper phy;
    phy.SetChannel(channel.Create());
 
    WifiHelper wifi;
    wifi.SetStandard(WIFI_STANDARD_80211n);
    wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager", "DataMode", StringValue("HtMcs7"));
 
    WifiMacHelper mac;
    Ssid ssid = Ssid("ns-3-ssid");
    mac.SetType("ns3::StaWifiMac", "Ssid", SsidValue(ssid), "ActiveProbing", BooleanValue(false));
 
    NetDeviceContainer staDevices;
    staDevices = wifi.Install(phy, mac, wifiStaNode);
 
    mac.SetType("ns3::ApWifiMac", "Ssid", SsidValue(ssid), "BeaconGeneration", BooleanValue(true));
 
    NetDeviceContainer apDevices;
    apDevices = wifi.Install(phy, mac, wifiApNode);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
 
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));
    positionAlloc->Add(Vector(1.0, 0.0, 0.0));
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(wifiApNode);
    mobility.Install(wifiStaNode);
 
    Ptr<WifiNetDevice> ap_device = DynamicCast<WifiNetDevice>(apDevices.Get(0));
    Ptr<WifiNetDevice> sta_device = DynamicCast<WifiNetDevice>(staDevices.Get(0));
 
    // set the TXOP limit on BE AC
    PointerValue ptr;
    sta_device->GetMac()->GetAttribute("BE_Txop", ptr);
    ptr.Get<QosTxop>()->SetTxopLimit(MicroSeconds(3008));
 
    PacketSocketAddress socket;
    socket.SetSingleDevice(sta_device->GetIfIndex());
    socket.SetPhysicalAddress(ap_device->GetAddress());
    socket.SetProtocol(1);
 
    // give packet socket powers to nodes.
    PacketSocketHelper packetSocket;
    packetSocket.Install(wifiStaNode);
    packetSocket.Install(wifiApNode);
 
    Ptr<PacketSocketClient> client = CreateObject<PacketSocketClient>();
    client->SetAttribute("PacketSize", UintegerValue(1400));
    client->SetAttribute("MaxPackets", UintegerValue(1));
    client->SetRemote(socket);
    wifiStaNode.Get(0)->AddApplication(client);
    client->SetStartTime(Seconds(1));
    client->SetStopTime(Seconds(3.0));
 
    Ptr<PacketSocketServer> server = CreateObject<PacketSocketServer>();
    server->SetLocal(socket);
    wifiApNode.Get(0)->AddApplication(server);
    server->SetStartTime(Seconds(0.0));
    server->SetStopTime(Seconds(4.0));
 
    Config::Connect("/NodeList/*/ApplicationList/0/$ns3::PacketSocketServer/Rx",
                    MakeCallback(&QosFragmentationTestCase::Receive, this));
 
    Config::Set("/NodeList/0/DeviceList/0/RemoteStationManager/FragmentationThreshold",
                StringValue("400"));
    Config::Connect("/NodeList/0/DeviceList/0/Phy/PhyTxBegin",
                    MakeCallback(&QosFragmentationTestCase::Transmit, this));
 
    Simulator::Stop(Seconds(5));
    Simulator::Run();
 
    Simulator::Destroy();
 
    NS_TEST_ASSERT_MSG_EQ(m_received, 1, "Unexpected number of received packets");
    NS_TEST_ASSERT_MSG_EQ(m_fragments, 4, "Unexpected number of transmitted fragments");
}
 
class SetChannelFrequencyTest : public TestCase
{
  public:
    SetChannelFrequencyTest();
 
    void DoRun() override;
 
  private:
    Ptr<YansWifiPhy> GetYansWifiPhyPtr(const NetDeviceContainer& nc) const;
};
 
SetChannelFrequencyTest::SetChannelFrequencyTest()
    : TestCase("Test case for setting WifiPhy channel and frequency")
{
}
 
Ptr<YansWifiPhy>
SetChannelFrequencyTest::GetYansWifiPhyPtr(const NetDeviceContainer& nc) const
{
    Ptr<WifiNetDevice> wnd = nc.Get(0)->GetObject<WifiNetDevice>();
    Ptr<WifiPhy> wp = wnd->GetPhy();
    return wp->GetObject<YansWifiPhy>();
}
 
void
SetChannelFrequencyTest::DoRun()
{
    NodeContainer wifiStaNode;
    wifiStaNode.Create(1);
    NodeContainer wifiApNode;
    wifiApNode.Create(1);
 
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    YansWifiPhyHelper phy;
    phy.SetChannel(channel.Create());
 
    // Configure and declare other generic components of this example
    Ssid ssid;
    ssid = Ssid("wifi-phy-configuration");
    WifiMacHelper macSta;
    macSta.SetType("ns3::StaWifiMac",
                   "Ssid",
                   SsidValue(ssid),
                   "ActiveProbing",
                   BooleanValue(false));
    NetDeviceContainer staDevice;
    Ptr<YansWifiPhy> phySta;
 
    // Cases taken from src/wifi/examples/wifi-phy-configuration.cc example
    {
        // case 0:
        // Default configuration, without WifiHelper::SetStandard or WifiHelper
        phySta = CreateObject<YansWifiPhy>();
        // The default results in an invalid configuration
        NS_TEST_ASSERT_MSG_EQ(phySta->GetOperatingChannel().IsSet(),
                              false,
                              "default configuration");
    }
    {
        // case 1:
        WifiHelper wifi;
        wifi.SetStandard(WIFI_STANDARD_80211a);
        wifi.SetRemoteStationManager("ns3::ArfWifiManager");
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        // We expect channel 36, width 20, frequency 5180
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 36, "default configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "default configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5180, "default configuration");
    }
    {
        // case 2:
        WifiHelper wifi;
        wifi.SetStandard(WIFI_STANDARD_80211b);
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        // We expect channel 1, width 22, frequency 2412
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 1, "802.11b configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 22, "802.11b configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 2412, "802.11b configuration");
    }
    {
        // case 3:
        WifiHelper wifi;
        wifi.SetStandard(WIFI_STANDARD_80211g);
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        // We expect channel 1, width 20, frequency 2412
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 1, "802.11g configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11g configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 2412, "802.11g configuration");
    }
    {
        // case 4:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        wifi.SetStandard(WIFI_STANDARD_80211n);
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_5GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 36, "802.11n-5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11n-5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5180, "802.11n-5GHz configuration");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_UNSPECIFIED, 0}")); // restore default
    }
    {
        // case 5:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        wifi.SetStandard(WIFI_STANDARD_80211n);
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 1, "802.11n-2.4GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11n-2.4GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 2412, "802.11n-2.4GHz configuration");
    }
    {
        // case 6:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        wifi.SetStandard(WIFI_STANDARD_80211ac);
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 42, "802.11ac configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 80, "802.11ac configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5210, "802.11ac configuration");
    }
    {
        // case 7:
        // By default, WifiHelper will use WIFI_PHY_STANDARD_80211ax
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_2_4GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 1, "802.11ax-2.4GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11ax-2.4GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 2412, "802.11ax-2.4GHz configuration");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_UNSPECIFIED, 0}")); // restore default
    }
    {
        // case 8:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 42, "802.11ax-5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 80, "802.11ax-5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5210, "802.11ax-5GHz configuration");
    }
    {
        // case 9:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_6GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 7, "802.11ax-6GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 80, "802.11ax-6GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5985, "802.11ax-6GHz configuration");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_UNSPECIFIED, 0}")); // restore default
    }
    {
        // case 10:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        wifi.SetStandard(WIFI_STANDARD_80211p);
        phy.Set("ChannelSettings", StringValue("{0, 10, BAND_5GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 172, "802.11p 10Mhz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 10, "802.11p 10Mhz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5860, "802.11p 10Mhz configuration");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_UNSPECIFIED, 0}")); // restore default
    }
    {
        // case 11:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        wifi.SetStandard(WIFI_STANDARD_80211p);
        phy.Set("ChannelSettings", StringValue("{0, 5, BAND_5GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 171, "802.11p 5Mhz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 5, "802.11p 5Mhz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5860, "802.11p 5Mhz configuration");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_UNSPECIFIED, 0}")); // restore default
    }
    {
        // case 12:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        wifi.SetStandard(WIFI_STANDARD_80211n);
        phy.Set("ChannelSettings", StringValue("{44, 20, BAND_5GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 44, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5220, "802.11 5GHz configuration");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_UNSPECIFIED, 0}")); // restore default
    }
    {
        // case 13:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        phy.Set("ChannelSettings", StringValue("{44, 0, BAND_5GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        // Post-install reconfiguration to channel number 40
        std::ostringstream path;
        path << "/NodeList/*/DeviceList/" << staDevice.Get(0)->GetIfIndex()
             << "/$ns3::WifiNetDevice/Phy/$ns3::YansWifiPhy/ChannelSettings";
        Config::Set(path.str(), StringValue("{40, 0, BAND_5GHZ, 0}"));
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 40, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5200, "802.11 5GHz configuration");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_UNSPECIFIED, 0}")); // restore default
    }
    {
        // case 14:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        phy.Set("ChannelSettings", StringValue("{44, 0, BAND_5GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        // Post-install reconfiguration to a 40 MHz channel
        std::ostringstream path;
        path << "/NodeList/*/DeviceList/" << staDevice.Get(0)->GetIfIndex()
             << "/$ns3::WifiNetDevice/Phy/$ns3::YansWifiPhy/ChannelSettings";
        Config::Set(path.str(), StringValue("{46, 0, BAND_5GHZ, 0}"));
        // Although channel 44 is configured originally for 20 MHz, we
        // allow it to be used for 40 MHz here
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 46, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 40, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5230, "802.11 5GHz configuration");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_UNSPECIFIED, 0}")); // restore default
    }
    {
        // case 15:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        wifi.SetStandard(WIFI_STANDARD_80211n);
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        phySta->SetAttribute("ChannelSettings", StringValue("{3, 20, BAND_2_4GHZ, 0}"));
        return;
        // Post-install reconfiguration to a 40 MHz channel
        std::ostringstream path;
        path << "/NodeList/*/DeviceList/" << staDevice.Get(0)->GetIfIndex()
             << "/$ns3::WifiNetDevice/Phy/$ns3::YansWifiPhy/ChannelSettings";
        Config::Set(path.str(), StringValue("{4, 40, BAND_2_4GHZ, 0}"));
        // Although channel 44 is configured originally for 20 MHz, we
        // allow it to be used for 40 MHz here
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 4, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 40, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 2427, "802.11 5GHz configuration");
        phy.Set("ChannelSettings", StringValue("{0, 0, BAND_UNSPECIFIED, 0}")); // restore default
    }
    {
        // case 16:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        // Test that setting Frequency to a non-standard value will throw an exception
        wifi.SetStandard(WIFI_STANDARD_80211n);
        phy.Set("ChannelSettings", StringValue("{44, 0, BAND_5GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        bool exceptionThrown = false;
        try
        {
            phySta->SetAttribute("ChannelSettings", StringValue("{45, 0, BAND_5GHZ, 0}"));
        }
        catch (const std::runtime_error&)
        {
            exceptionThrown = true;
        }
        // We expect that an exception is thrown
        NS_TEST_ASSERT_MSG_EQ(exceptionThrown, true, "802.11 5GHz configuration");
    }
    {
        // case 17:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        wifi.SetStandard(WIFI_STANDARD_80211n);
        phy.Set("ChannelSettings", StringValue("{44, 0, BAND_5GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        // Test that setting channel to a standard value will set the
        // frequency correctly
        phySta->SetAttribute("ChannelSettings", StringValue("{100, 0, BAND_5GHZ, 0}"));
        // We expect frequency to be 5500 due to channel number being 100
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 100, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5500, "802.11 5GHz configuration");
    }
    {
        // case 18:
        // Set a wrong channel after initialization
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        wifi.SetStandard(WIFI_STANDARD_80211n);
        phy.Set("ChannelSettings", StringValue("{44, 0, BAND_5GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        bool exceptionThrown = false;
        try
        {
            phySta->SetOperatingChannel(WifiPhy::ChannelTuple{99, 40, WIFI_PHY_BAND_5GHZ, 0});
        }
        catch (const std::runtime_error&)
        {
            exceptionThrown = true;
        }
        // We expect that an exception is thrown
        NS_TEST_ASSERT_MSG_EQ(exceptionThrown, true, "802.11 5GHz configuration");
    }
    {
        // case 19:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        // Test how channel number behaves when frequency is non-standard
        wifi.SetStandard(WIFI_STANDARD_80211n);
        phy.Set("ChannelSettings", StringValue("{44, 0, BAND_5GHZ, 0}"));
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        bool exceptionThrown = false;
        try
        {
            phySta->SetAttribute("ChannelSettings", StringValue("{45, 0, BAND_5GHZ, 0}"));
        }
        catch (const std::runtime_error&)
        {
            exceptionThrown = true;
        }
        // We expect that an exception is thrown due to unknown channel number 45
        NS_TEST_ASSERT_MSG_EQ(exceptionThrown, true, "802.11 5GHz configuration");
        phySta->SetAttribute("ChannelSettings", StringValue("{36, 0, BAND_5GHZ, 0}"));
        // We expect channel number to be 36 due to known center frequency 5180
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 36, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5180, "802.11 5GHz configuration");
        exceptionThrown = false;
        try
        {
            phySta->SetAttribute("ChannelSettings", StringValue("{43, 0, BAND_5GHZ, 0}"));
        }
        catch (const std::runtime_error&)
        {
            exceptionThrown = true;
        }
        // We expect that an exception is thrown due to unknown channel number 43
        NS_TEST_ASSERT_MSG_EQ(exceptionThrown, true, "802.11 5GHz configuration");
        phySta->SetAttribute("ChannelSettings", StringValue("{36, 0, BAND_5GHZ, 0}"));
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 36, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5180, "802.11 5GHz configuration");
    }
    {
        // case 20:
        WifiHelper wifi;
        wifi.SetRemoteStationManager("ns3::IdealWifiManager");
        phy.Set("ChannelSettings", StringValue("{40, 0, BAND_5GHZ, 0}"));
        wifi.SetStandard(WIFI_STANDARD_80211n);
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 40, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5200, "802.11 5GHz configuration");
        // Set both channel and frequency to consistent values after initialization
        wifi.SetStandard(WIFI_STANDARD_80211n);
        staDevice = wifi.Install(phy, macSta, wifiStaNode.Get(0));
        phySta = GetYansWifiPhyPtr(staDevice);
        phySta->SetAttribute("ChannelSettings", StringValue("{40, 0, BAND_5GHZ, 0}"));
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 40, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5200, "802.11 5GHz configuration");
 
        phySta->SetAttribute("ChannelSettings", StringValue("{36, 0, BAND_5GHZ, 0}"));
        // We expect channel number to be 36
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 36, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5180, "802.11 5GHz configuration");
        phySta->SetAttribute("ChannelSettings", StringValue("{40, 0, BAND_5GHZ, 0}"));
        // We expect channel number to be 40
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 40, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5200, "802.11 5GHz configuration");
        bool exceptionThrown = false;
        try
        {
            phySta->SetAttribute("ChannelSettings", StringValue("{45, 0, BAND_5GHZ, 0}"));
        }
        catch (const std::runtime_error&)
        {
            exceptionThrown = true;
        }
        phySta->SetAttribute("ChannelSettings", StringValue("{36, 0, BAND_5GHZ, 0}"));
        // We expect channel number to be 36 and an exception to be thrown
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 36, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5180, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(exceptionThrown, true, "802.11 5GHz configuration");
        phySta->SetAttribute("ChannelSettings", StringValue("{36, 0, BAND_5GHZ, 0}"));
        exceptionThrown = false;
        try
        {
            phySta->SetAttribute("ChannelSettings", StringValue("{43, 0, BAND_5GHZ, 0}"));
        }
        catch (const std::runtime_error&)
        {
            exceptionThrown = true;
        }
        // We expect channel number to be 36 and an exception to be thrown
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelNumber(), 36, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetChannelWidth(), 20, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(phySta->GetFrequency(), 5180, "802.11 5GHz configuration");
        NS_TEST_ASSERT_MSG_EQ(exceptionThrown, true, "802.11 5GHz configuration");
    }
 
    Simulator::Destroy();
}
 
//-----------------------------------------------------------------------------
class Bug2222TestCase : public TestCase
{
  public:
    Bug2222TestCase();
    ~Bug2222TestCase() override;
 
    void DoRun() override;
 
  private:
    uint32_t m_countInternalCollisions; 
 
    void TxDataFailedTrace(std::string context, Mac48Address adr);
};
 
Bug2222TestCase::Bug2222TestCase()
    : TestCase("Test case for Bug 2222"),
      m_countInternalCollisions(0)
{
}
 
Bug2222TestCase::~Bug2222TestCase()
{
}
 
void
Bug2222TestCase::TxDataFailedTrace(std::string context, Mac48Address adr)
{
    // Indicate the long retry counter has been increased in the wifi remote station manager
    m_countInternalCollisions++;
}
 
void
Bug2222TestCase::DoRun()
{
    m_countInternalCollisions = 0;
 
    // Generate same backoff for AC_VI and AC_VO
    // The below combination will work
    RngSeedManager::SetSeed(1);
    RngSeedManager::SetRun(1);
    int64_t streamNumber = 100;
 
    NodeContainer wifiNodes;
    wifiNodes.Create(2);
 
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    YansWifiPhyHelper phy;
    phy.SetChannel(channel.Create());
 
    WifiHelper wifi;
    wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager",
                                 "DataMode",
                                 StringValue("OfdmRate54Mbps"),
                                 "ControlMode",
                                 StringValue("OfdmRate24Mbps"));
    WifiMacHelper mac;
    Ssid ssid = Ssid("ns-3-ssid");
    mac.SetType("ns3::AdhocWifiMac", "QosSupported", BooleanValue(true));
 
    NetDeviceContainer wifiDevices;
    wifiDevices = wifi.Install(phy, mac, wifiNodes);
 
    // Assign fixed streams to random variables in use
    wifi.AssignStreams(wifiDevices, streamNumber);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
 
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));
    positionAlloc->Add(Vector(10.0, 0.0, 0.0));
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(wifiNodes);
 
    Ptr<WifiNetDevice> device1 = DynamicCast<WifiNetDevice>(wifiDevices.Get(0));
    Ptr<WifiNetDevice> device2 = DynamicCast<WifiNetDevice>(wifiDevices.Get(1));
 
    PacketSocketAddress socket;
    socket.SetSingleDevice(device1->GetIfIndex());
    socket.SetPhysicalAddress(device2->GetAddress());
    socket.SetProtocol(1);
 
    PacketSocketHelper packetSocket;
    packetSocket.Install(wifiNodes);
 
    Ptr<PacketSocketClient> clientLowPriority = CreateObject<PacketSocketClient>();
    clientLowPriority->SetAttribute("PacketSize", UintegerValue(1460));
    clientLowPriority->SetAttribute("MaxPackets", UintegerValue(1));
    clientLowPriority->SetAttribute("Priority", UintegerValue(4)); // AC_VI
    clientLowPriority->SetRemote(socket);
    wifiNodes.Get(0)->AddApplication(clientLowPriority);
    clientLowPriority->SetStartTime(Seconds(0.0));
    clientLowPriority->SetStopTime(Seconds(1.0));
 
    Ptr<PacketSocketClient> clientHighPriority = CreateObject<PacketSocketClient>();
    clientHighPriority->SetAttribute("PacketSize", UintegerValue(1460));
    clientHighPriority->SetAttribute("MaxPackets", UintegerValue(1));
    clientHighPriority->SetAttribute("Priority", UintegerValue(6)); // AC_VO
    clientHighPriority->SetRemote(socket);
    wifiNodes.Get(0)->AddApplication(clientHighPriority);
    clientHighPriority->SetStartTime(Seconds(0.0));
    clientHighPriority->SetStopTime(Seconds(1.0));
 
    Ptr<PacketSocketServer> server = CreateObject<PacketSocketServer>();
    server->SetLocal(socket);
    wifiNodes.Get(1)->AddApplication(server);
    server->SetStartTime(Seconds(0.0));
    server->SetStopTime(Seconds(1.0));
 
    Config::Connect("/NodeList/*/DeviceList/*/RemoteStationManager/MacTxDataFailed",
                    MakeCallback(&Bug2222TestCase::TxDataFailedTrace, this));
 
    Simulator::Stop(Seconds(1.0));
    Simulator::Run();
    Simulator::Destroy();
 
    NS_TEST_ASSERT_MSG_EQ(m_countInternalCollisions,
                          1,
                          "unexpected number of internal collisions!");
}
 
//-----------------------------------------------------------------------------
class Bug2843TestCase : public TestCase
{
  public:
    Bug2843TestCase();
    ~Bug2843TestCase() override;
    void DoRun() override;
 
  private:
    typedef std::tuple<double, uint16_t, uint32_t, WifiModulationClass>
        FreqWidthSubbandModulationTuple;
    std::vector<FreqWidthSubbandModulationTuple>
        m_distinctTuples; 
 
    void StoreDistinctTuple(std::string context, Ptr<SpectrumSignalParameters> txParams);
    void SendPacketBurst(uint8_t numPackets,
                         Ptr<NetDevice> sourceDevice,
                         Address& destination) const;
 
    uint16_t m_channelWidth; 
};
 
Bug2843TestCase::Bug2843TestCase()
    : TestCase("Test case for Bug 2843"),
      m_channelWidth(20)
{
}
 
Bug2843TestCase::~Bug2843TestCase()
{
}
 
void
Bug2843TestCase::StoreDistinctTuple(std::string context, Ptr<SpectrumSignalParameters> txParams)
{
    // Extract starting frequency and number of subbands
    Ptr<const SpectrumModel> c = txParams->psd->GetSpectrumModel();
    std::size_t numBands = c->GetNumBands();
    double startingFreq = c->Begin()->fl;
 
    // Get channel bandwidth and modulation class
    Ptr<const WifiSpectrumSignalParameters> wifiTxParams =
        DynamicCast<WifiSpectrumSignalParameters>(txParams);
 
    Ptr<WifiPpdu> ppdu = wifiTxParams->ppdu->Copy();
    WifiTxVector txVector = ppdu->GetTxVector();
    m_channelWidth = txVector.GetChannelWidth();
    WifiModulationClass modulationClass = txVector.GetMode().GetModulationClass();
 
    // Build a tuple and check if seen before (if so store it)
    FreqWidthSubbandModulationTuple tupleForCurrentTx =
        std::make_tuple(startingFreq, m_channelWidth, numBands, modulationClass);
    bool found = false;
    for (std::vector<FreqWidthSubbandModulationTuple>::const_iterator it = m_distinctTuples.begin();
         it != m_distinctTuples.end();
         it++)
    {
        if (*it == tupleForCurrentTx)
        {
            found = true;
        }
    }
    if (!found)
    {
        m_distinctTuples.push_back(tupleForCurrentTx);
    }
}
 
void
Bug2843TestCase::SendPacketBurst(uint8_t numPackets,
                                 Ptr<NetDevice> sourceDevice,
                                 Address& destination) const
{
    for (uint8_t i = 0; i < numPackets; i++)
    {
        Ptr<Packet> pkt = Create<Packet>(1000); // 1000 dummy bytes of data
        sourceDevice->Send(pkt, destination, 0);
    }
}
 
void
Bug2843TestCase::DoRun()
{
    uint16_t channelWidth = 40; // at least 40 MHz expected here
 
    NodeContainer wifiStaNode;
    wifiStaNode.Create(1);
 
    NodeContainer wifiApNode;
    wifiApNode.Create(1);
 
    SpectrumWifiPhyHelper spectrumPhy;
    Ptr<MultiModelSpectrumChannel> spectrumChannel = CreateObject<MultiModelSpectrumChannel>();
    Ptr<FriisPropagationLossModel> lossModel = CreateObject<FriisPropagationLossModel>();
    lossModel->SetFrequency(5.190e9);
    spectrumChannel->AddPropagationLossModel(lossModel);
 
    Ptr<ConstantSpeedPropagationDelayModel> delayModel =
        CreateObject<ConstantSpeedPropagationDelayModel>();
    spectrumChannel->SetPropagationDelayModel(delayModel);
 
    spectrumPhy.SetChannel(spectrumChannel);
    spectrumPhy.SetErrorRateModel("ns3::NistErrorRateModel");
    spectrumPhy.Set("ChannelSettings", StringValue("{38, 40, BAND_5GHZ, 0}"));
    spectrumPhy.Set("TxPowerStart", DoubleValue(10));
    spectrumPhy.Set("TxPowerEnd", DoubleValue(10));
 
    WifiHelper wifi;
    wifi.SetStandard(WIFI_STANDARD_80211ac);
    wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager",
                                 "DataMode",
                                 StringValue("VhtMcs8"),
                                 "ControlMode",
                                 StringValue("VhtMcs8"),
                                 "RtsCtsThreshold",
                                 StringValue("500")); // so as to force RTS/CTS for data frames
 
    WifiMacHelper mac;
    mac.SetType("ns3::StaWifiMac");
    NetDeviceContainer staDevice;
    staDevice = wifi.Install(spectrumPhy, mac, wifiStaNode);
 
    mac.SetType("ns3::ApWifiMac");
    NetDeviceContainer apDevice;
    apDevice = wifi.Install(spectrumPhy, mac, wifiApNode);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));
    positionAlloc->Add(Vector(1.0, 0.0, 0.0)); // put close enough in order to use MCS
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(wifiApNode);
    mobility.Install(wifiStaNode);
 
    // Send two 5 packet-bursts
    Simulator::Schedule(Seconds(0.5),
                        &Bug2843TestCase::SendPacketBurst,
                        this,
                        5,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(0.6),
                        &Bug2843TestCase::SendPacketBurst,
                        this,
                        5,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
 
    Config::Connect("/ChannelList/*/$ns3::MultiModelSpectrumChannel/TxSigParams",
                    MakeCallback(&Bug2843TestCase::StoreDistinctTuple, this));
 
    Simulator::Stop(Seconds(0.8));
    Simulator::Run();
 
    Simulator::Destroy();
 
    // {starting frequency, channelWidth, Number of subbands in SpectrumModel, modulation type}
    // tuples
    std::size_t numberTuples = m_distinctTuples.size();
    NS_TEST_ASSERT_MSG_EQ(numberTuples, 2, "Only two distinct tuples expected");
    NS_TEST_ASSERT_MSG_EQ(std::get<0>(m_distinctTuples[0]) - 20e6,
                          std::get<0>(m_distinctTuples[1]),
                          "The starting frequency of the first tuple should be shifted 20 MHz to "
                          "the right wrt second tuple");
    // Note that the first tuple should the one initiated by the beacon, i.e. non-HT OFDM (20 MHz)
    NS_TEST_ASSERT_MSG_EQ(std::get<1>(m_distinctTuples[0]),
                          20,
                          "First tuple's channel width should be 20 MHz");
    NS_TEST_ASSERT_MSG_EQ(std::get<2>(m_distinctTuples[0]),
                          193,
                          "First tuple should have 193 subbands (64+DC, 20MHz+DC, inband and 64*2 "
                          "out-of-band, 20MHz on each side)");
    NS_TEST_ASSERT_MSG_EQ(std::get<3>(m_distinctTuples[0]),
                          WifiModulationClass::WIFI_MOD_CLASS_OFDM,
                          "First tuple should be OFDM");
    // Second tuple
    NS_TEST_ASSERT_MSG_EQ(std::get<1>(m_distinctTuples[1]),
                          channelWidth,
                          "Second tuple's channel width should be 40 MHz");
    NS_TEST_ASSERT_MSG_EQ(std::get<2>(m_distinctTuples[1]),
                          385,
                          "Second tuple should have 385 subbands (128+DC, 40MHz+DC, inband and "
                          "128*2 out-of-band, 40MHz on each side)");
    NS_TEST_ASSERT_MSG_EQ(std::get<3>(m_distinctTuples[1]),
                          WifiModulationClass::WIFI_MOD_CLASS_VHT,
                          "Second tuple should be VHT_OFDM");
}
 
//-----------------------------------------------------------------------------
class Bug2831TestCase : public TestCase
{
  public:
    Bug2831TestCase();
    ~Bug2831TestCase() override;
    void DoRun() override;
 
  private:
    void ChangeSupportedChannelWidth();
    void RxCallback(std::string context, Ptr<const Packet> p, RxPowerWattPerChannelBand rxPowersW);
 
    Ptr<YansWifiPhy> m_apPhy;  
    Ptr<YansWifiPhy> m_staPhy; 
 
    uint16_t m_assocReqCount;                  
    uint16_t m_assocRespCount;                 
    uint16_t m_countOperationalChannelWidth20; 
    uint16_t m_countOperationalChannelWidth40; 
};
 
Bug2831TestCase::Bug2831TestCase()
    : TestCase("Test case for Bug 2831"),
      m_assocReqCount(0),
      m_assocRespCount(0),
      m_countOperationalChannelWidth20(0),
      m_countOperationalChannelWidth40(0)
{
}
 
Bug2831TestCase::~Bug2831TestCase()
{
}
 
void
Bug2831TestCase::ChangeSupportedChannelWidth()
{
    m_apPhy->SetOperatingChannel(WifiPhy::ChannelTuple{38, 40, (int)(WIFI_PHY_BAND_5GHZ), 0});
    m_staPhy->SetOperatingChannel(WifiPhy::ChannelTuple{38, 40, (int)(WIFI_PHY_BAND_5GHZ), 0});
}
 
void
Bug2831TestCase::RxCallback(std::string context,
                            Ptr<const Packet> p,
                            RxPowerWattPerChannelBand rxPowersW)
{
    Ptr<Packet> packet = p->Copy();
    WifiMacHeader hdr;
    packet->RemoveHeader(hdr);
    if (hdr.IsAssocReq())
    {
        m_assocReqCount++;
    }
    else if (hdr.IsAssocResp())
    {
        m_assocRespCount++;
    }
    else if (hdr.IsBeacon())
    {
        MgtBeaconHeader beacon;
        packet->RemoveHeader(beacon);
        const auto& htOperation = beacon.GetHtOperation();
        if (htOperation.has_value() && htOperation->GetStaChannelWidth() > 0)
        {
            m_countOperationalChannelWidth40++;
        }
        else
        {
            m_countOperationalChannelWidth20++;
        }
    }
}
 
void
Bug2831TestCase::DoRun()
{
    Ptr<YansWifiChannel> channel = CreateObject<YansWifiChannel>();
    ObjectFactory propDelay;
    propDelay.SetTypeId("ns3::ConstantSpeedPropagationDelayModel");
    Ptr<PropagationDelayModel> propagationDelay = propDelay.Create<PropagationDelayModel>();
    Ptr<PropagationLossModel> propagationLoss = CreateObject<FriisPropagationLossModel>();
    channel->SetPropagationDelayModel(propagationDelay);
    channel->SetPropagationLossModel(propagationLoss);
 
    Ptr<Node> apNode = CreateObject<Node>();
    Ptr<WifiNetDevice> apDev = CreateObject<WifiNetDevice>();
    apNode->AddDevice(apDev);
    apDev->SetStandard(WIFI_STANDARD_80211ax);
    Ptr<HtConfiguration> apHtConfiguration = CreateObject<HtConfiguration>();
    apDev->SetHtConfiguration(apHtConfiguration);
    ObjectFactory manager;
    manager.SetTypeId("ns3::ConstantRateWifiManager");
    apDev->SetRemoteStationManager(manager.Create<WifiRemoteStationManager>());
 
    auto apMobility = CreateObject<ConstantPositionMobilityModel>();
    apMobility->SetPosition(Vector(0.0, 0.0, 0.0));
    apNode->AggregateObject(apMobility);
 
    auto error = CreateObject<YansErrorRateModel>();
    m_apPhy = CreateObject<YansWifiPhy>();
    apDev->SetPhy(m_apPhy);
    Ptr<InterferenceHelper> apInterferenceHelper = CreateObject<InterferenceHelper>();
    m_apPhy->SetInterferenceHelper(apInterferenceHelper);
    m_apPhy->SetErrorRateModel(error);
    m_apPhy->SetChannel(channel);
    m_apPhy->SetMobility(apMobility);
    m_apPhy->SetDevice(apDev);
    m_apPhy->ConfigureStandard(WIFI_STANDARD_80211ax);
    m_apPhy->SetOperatingChannel(WifiPhy::ChannelTuple{36, 20, (int)(WIFI_PHY_BAND_5GHZ), 0});
 
    ObjectFactory mac;
    mac.SetTypeId("ns3::ApWifiMac");
    mac.Set("EnableBeaconJitter", BooleanValue(false));
    mac.Set("QosSupported", BooleanValue(true));
    Ptr<WifiMac> apMac = mac.Create<WifiMac>();
    apMac->SetDevice(apDev);
    apMac->SetAddress(Mac48Address::Allocate());
    apDev->SetMac(apMac);
    apMac->ConfigureStandard(WIFI_STANDARD_80211ax);
    apMac->SetMacQueueScheduler(CreateObject<FcfsWifiQueueScheduler>());
    Ptr<FrameExchangeManager> fem = apMac->GetFrameExchangeManager();
    Ptr<WifiProtectionManager> protectionManager = CreateObject<WifiDefaultProtectionManager>();
    protectionManager->SetWifiMac(apMac);
    fem->SetProtectionManager(protectionManager);
    Ptr<WifiAckManager> ackManager = CreateObject<WifiDefaultAckManager>();
    ackManager->SetWifiMac(apMac);
    fem->SetAckManager(ackManager);
 
    Ptr<Node> staNode = CreateObject<Node>();
    Ptr<WifiNetDevice> staDev = CreateObject<WifiNetDevice>();
    staNode->AddDevice(staDev);
    staDev->SetStandard(WIFI_STANDARD_80211ax);
    Ptr<HtConfiguration> staHtConfiguration = CreateObject<HtConfiguration>();
    staDev->SetHtConfiguration(staHtConfiguration);
    staDev->SetRemoteStationManager(manager.Create<WifiRemoteStationManager>());
 
    Ptr<ConstantPositionMobilityModel> staMobility = CreateObject<ConstantPositionMobilityModel>();
    staMobility->SetPosition(Vector(1.0, 0.0, 0.0));
    staNode->AggregateObject(staMobility);
 
    m_staPhy = CreateObject<YansWifiPhy>();
    staDev->SetPhy(m_staPhy);
    Ptr<InterferenceHelper> staInterferenceHelper = CreateObject<InterferenceHelper>();
    m_staPhy->SetInterferenceHelper(staInterferenceHelper);
    m_staPhy->SetErrorRateModel(error);
    m_staPhy->SetChannel(channel);
    m_staPhy->SetMobility(staMobility);
    m_staPhy->SetDevice(apDev);
    m_staPhy->ConfigureStandard(WIFI_STANDARD_80211ax);
    m_staPhy->SetOperatingChannel(WifiPhy::ChannelTuple{36, 20, (int)(WIFI_PHY_BAND_5GHZ), 0});
 
    mac.SetTypeId("ns3::StaWifiMac");
    auto staMac = mac.Create<WifiMac>();
    staDev->SetMac(staMac);
    staMac->SetDevice(staDev);
    staMac->SetAddress(Mac48Address::Allocate());
    staMac->ConfigureStandard(WIFI_STANDARD_80211ax);
    StaticCast<StaWifiMac>(staMac)->SetAssocManager(CreateObject<WifiDefaultAssocManager>());
    staMac->SetMacQueueScheduler(CreateObject<FcfsWifiQueueScheduler>());
    fem = staMac->GetFrameExchangeManager();
    protectionManager = CreateObject<WifiDefaultProtectionManager>();
    protectionManager->SetWifiMac(staMac);
    fem->SetProtectionManager(protectionManager);
    ackManager = CreateObject<WifiDefaultAckManager>();
    ackManager->SetWifiMac(staMac);
    fem->SetAckManager(ackManager);
 
    Config::Connect("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/$ns3::WifiPhy/PhyRxBegin",
                    MakeCallback(&Bug2831TestCase::RxCallback, this));
 
    Simulator::Schedule(Seconds(1.0), &Bug2831TestCase::ChangeSupportedChannelWidth, this);
 
    Simulator::Stop(Seconds(3.0));
    Simulator::Run();
    Simulator::Destroy();
 
    NS_TEST_ASSERT_MSG_EQ(m_assocReqCount, 2, "Second Association request not received");
    NS_TEST_ASSERT_MSG_EQ(m_assocRespCount, 2, "Second Association response not received");
    NS_TEST_ASSERT_MSG_EQ(m_countOperationalChannelWidth20,
                          10,
                          "Incorrect operational channel width before channel change");
    NS_TEST_ASSERT_MSG_EQ(m_countOperationalChannelWidth40,
                          20,
                          "Incorrect operational channel width after channel change");
}
 
//-----------------------------------------------------------------------------
class StaWifiMacScanningTestCase : public TestCase
{
  public:
    StaWifiMacScanningTestCase();
    ~StaWifiMacScanningTestCase() override;
    void DoRun() override;
 
  private:
    void AssocCallback(std::string context, Mac48Address bssid);
    void TurnBeaconGenerationOn(Ptr<Node> apNode);
    void TurnApOff(Ptr<Node> apNode);
    NodeContainer Setup(bool nearestApBeaconGeneration, bool staActiveProbe);
 
    Mac48Address m_associatedApBssid; 
};
 
StaWifiMacScanningTestCase::StaWifiMacScanningTestCase()
    : TestCase("Test case for StaWifiMac scanning capability")
{
}
 
StaWifiMacScanningTestCase::~StaWifiMacScanningTestCase()
{
}
 
void
StaWifiMacScanningTestCase::AssocCallback(std::string context, Mac48Address bssid)
{
    m_associatedApBssid = bssid;
}
 
void
StaWifiMacScanningTestCase::TurnBeaconGenerationOn(Ptr<Node> apNode)
{
    Ptr<WifiNetDevice> netDevice = DynamicCast<WifiNetDevice>(apNode->GetDevice(0));
    Ptr<ApWifiMac> mac = DynamicCast<ApWifiMac>(netDevice->GetMac());
    mac->SetAttribute("BeaconGeneration", BooleanValue(true));
}
 
void
StaWifiMacScanningTestCase::TurnApOff(Ptr<Node> apNode)
{
    Ptr<WifiNetDevice> netDevice = DynamicCast<WifiNetDevice>(apNode->GetDevice(0));
    Ptr<WifiPhy> phy = netDevice->GetPhy();
    phy->SetOffMode();
}
 
NodeContainer
StaWifiMacScanningTestCase::Setup(bool nearestApBeaconGeneration, bool staActiveProbe)
{
    RngSeedManager::SetSeed(1);
    RngSeedManager::SetRun(1);
    int64_t streamNumber = 1;
 
    NodeContainer apNodes;
    apNodes.Create(2);
 
    Ptr<Node> apNodeNearest = CreateObject<Node>();
    Ptr<Node> staNode = CreateObject<Node>();
 
    YansWifiPhyHelper phy;
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    phy.SetChannel(channel.Create());
 
    WifiHelper wifi;
    wifi.SetStandard(WIFI_STANDARD_80211n);
    wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager");
 
    WifiMacHelper mac;
    NetDeviceContainer apDevice;
    NetDeviceContainer apDeviceNearest;
    mac.SetType("ns3::ApWifiMac", "BeaconGeneration", BooleanValue(true));
    apDevice = wifi.Install(phy, mac, apNodes);
    mac.SetType("ns3::ApWifiMac", "BeaconGeneration", BooleanValue(nearestApBeaconGeneration));
    apDeviceNearest = wifi.Install(phy, mac, apNodeNearest);
 
    NetDeviceContainer staDevice;
    mac.SetType("ns3::StaWifiMac", "ActiveProbing", BooleanValue(staActiveProbe));
    staDevice = wifi.Install(phy, mac, staNode);
 
    // Assign fixed streams to random variables in use
    wifi.AssignStreams(apDevice, streamNumber);
    wifi.AssignStreams(apDeviceNearest, streamNumber + 1);
    wifi.AssignStreams(staDevice, streamNumber + 2);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));  // Furthest AP
    positionAlloc->Add(Vector(10.0, 0.0, 0.0)); // Second nearest AP
    positionAlloc->Add(Vector(5.0, 5.0, 0.0));  // Nearest AP
    positionAlloc->Add(Vector(6.0, 5.0, 0.0));  // STA
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(apNodes);
    mobility.Install(apNodeNearest);
    mobility.Install(staNode);
 
    Config::Connect("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Mac/$ns3::StaWifiMac/Assoc",
                    MakeCallback(&StaWifiMacScanningTestCase::AssocCallback, this));
 
    NodeContainer allNodes = NodeContainer(apNodes, apNodeNearest, staNode);
    return allNodes;
}
 
void
StaWifiMacScanningTestCase::DoRun()
{
    {
        NodeContainer nodes = Setup(false, false);
        Ptr<Node> nearestAp = nodes.Get(2);
        Mac48Address nearestApAddr =
            DynamicCast<WifiNetDevice>(nearestAp->GetDevice(0))->GetMac()->GetAddress();
 
        Simulator::Schedule(Seconds(0.05),
                            &StaWifiMacScanningTestCase::TurnBeaconGenerationOn,
                            this,
                            nearestAp);
 
        Simulator::Stop(Seconds(0.2));
        Simulator::Run();
        Simulator::Destroy();
 
        NS_TEST_ASSERT_MSG_EQ(m_associatedApBssid,
                              nearestApAddr,
                              "STA is associated to the wrong AP");
    }
    m_associatedApBssid = Mac48Address();
    {
        NodeContainer nodes = Setup(true, true);
        Ptr<Node> nearestAp = nodes.Get(2);
        Mac48Address nearestApAddr =
            DynamicCast<WifiNetDevice>(nearestAp->GetDevice(0))->GetMac()->GetAddress();
 
        Simulator::Stop(Seconds(0.2));
        Simulator::Run();
        Simulator::Destroy();
 
        NS_TEST_ASSERT_MSG_EQ(m_associatedApBssid,
                              nearestApAddr,
                              "STA is associated to the wrong AP");
    }
    m_associatedApBssid = Mac48Address();
    {
        NodeContainer nodes = Setup(true, false);
        Ptr<Node> nearestAp = nodes.Get(2);
        Mac48Address secondNearestApAddr =
            DynamicCast<WifiNetDevice>(nodes.Get(1)->GetDevice(0))->GetMac()->GetAddress();
 
        Simulator::Schedule(Seconds(0.1), &StaWifiMacScanningTestCase::TurnApOff, this, nearestAp);
 
        Simulator::Stop(Seconds(1.5));
        Simulator::Run();
        Simulator::Destroy();
 
        NS_TEST_ASSERT_MSG_EQ(m_associatedApBssid,
                              secondNearestApAddr,
                              "STA is associated to the wrong AP");
    }
}
 
//-----------------------------------------------------------------------------
class Bug2470TestCase : public TestCase
{
  public:
    Bug2470TestCase();
    ~Bug2470TestCase() override;
    void DoRun() override;
 
  private:
    void AddbaStateChangedCallback(std::string context,
                                   Time t,
                                   Mac48Address recipient,
                                   uint8_t tid,
                                   OriginatorBlockAckAgreement::State state);
    void TxCallback(Ptr<ListErrorModel> rxErrorModel,
                    std::string context,
                    WifiConstPsduMap psduMap,
                    WifiTxVector txVector,
                    double txPowerW);
 
    void RxCallback(std::string context,
                    Ptr<const Packet> p,
                    uint16_t channelFreqMhz,
                    WifiTxVector txVector,
                    MpduInfo aMpdu,
                    SignalNoiseDbm signalNoise,
                    uint16_t staId);
    void RxErrorCallback(std::string context, Ptr<const Packet> p, double snr);
    void SendPacketBurst(uint32_t numPackets,
                         Ptr<NetDevice> sourceDevice,
                         Address& destination) const;
    void RunSubtest(TypeOfStation rcvErrorType);
 
    uint16_t m_receivedNormalMpduCount; 
    uint16_t m_receivedAmpduCount;      
    uint16_t m_failedActionCount;       
    uint16_t m_addbaEstablishedCount;   
    uint16_t m_addbaPendingCount; 
    uint16_t
        m_addbaRejectedCount; 
    uint16_t
        m_addbaNoReplyCount;    
    uint16_t m_addbaResetCount; 
};
 
Bug2470TestCase::Bug2470TestCase()
    : TestCase("Test case for Bug 2470"),
      m_receivedNormalMpduCount(0),
      m_receivedAmpduCount(0),
      m_failedActionCount(0),
      m_addbaEstablishedCount(0),
      m_addbaPendingCount(0),
      m_addbaRejectedCount(0),
      m_addbaNoReplyCount(0),
      m_addbaResetCount(0)
{
}
 
Bug2470TestCase::~Bug2470TestCase()
{
}
 
void
Bug2470TestCase::AddbaStateChangedCallback(std::string context,
                                           Time t,
                                           Mac48Address recipient,
                                           uint8_t tid,
                                           OriginatorBlockAckAgreement::State state)
{
    switch (state)
    {
    case OriginatorBlockAckAgreement::ESTABLISHED:
        m_addbaEstablishedCount++;
        break;
    case OriginatorBlockAckAgreement::PENDING:
        m_addbaPendingCount++;
        break;
    case OriginatorBlockAckAgreement::REJECTED:
        m_addbaRejectedCount++;
        break;
    case OriginatorBlockAckAgreement::NO_REPLY:
        m_addbaNoReplyCount++;
        break;
    case OriginatorBlockAckAgreement::RESET:
        m_addbaResetCount++;
        break;
    }
}
 
void
Bug2470TestCase::TxCallback(Ptr<ListErrorModel> rxErrorModel,
                            std::string context,
                            WifiConstPsduMap psduMap,
                            WifiTxVector txVector,
                            double txPowerW)
{
    auto psdu = psduMap.begin()->second;
 
    // The sender is transmitting an ADDBA_REQUEST or ADDBA_RESPONSE frame. If this is
    // the first attempt at establishing a BA agreement (i.e., before the second set of packets
    // is generated), make the reception of the frame fail at the receiver.
    if (psdu->GetHeader(0).GetType() == WIFI_MAC_MGT_ACTION && Simulator::Now() < Seconds(0.8))
    {
        auto uid = psdu->GetPayload(0)->GetUid();
        rxErrorModel->SetList({uid});
    }
}
 
void
Bug2470TestCase::RxCallback(std::string context,
                            Ptr<const Packet> p,
                            uint16_t channelFreqMhz,
                            WifiTxVector txVector,
                            MpduInfo aMpdu,
                            SignalNoiseDbm signalNoise,
                            uint16_t staId)
{
    Ptr<Packet> packet = p->Copy();
    if (aMpdu.type != MpduType::NORMAL_MPDU)
    {
        m_receivedAmpduCount++;
    }
    else
    {
        WifiMacHeader hdr;
        packet->RemoveHeader(hdr);
        if (hdr.IsData())
        {
            m_receivedNormalMpduCount++;
        }
    }
}
 
void
Bug2470TestCase::RxErrorCallback(std::string context, Ptr<const Packet> p, double snr)
{
    Ptr<Packet> packet = p->Copy();
    WifiMacHeader hdr;
    packet->RemoveHeader(hdr);
    if (hdr.IsAction())
    {
        m_failedActionCount++;
    }
}
 
void
Bug2470TestCase::SendPacketBurst(uint32_t numPackets,
                                 Ptr<NetDevice> sourceDevice,
                                 Address& destination) const
{
    for (uint32_t i = 0; i < numPackets; i++)
    {
        Ptr<Packet> pkt = Create<Packet>(1000); // 1000 dummy bytes of data
        sourceDevice->Send(pkt, destination, 0);
    }
}
 
void
Bug2470TestCase::RunSubtest(TypeOfStation rcvErrorType)
{
    RngSeedManager::SetSeed(1);
    RngSeedManager::SetRun(1);
    int64_t streamNumber = 200;
 
    NodeContainer wifiApNode;
    NodeContainer wifiStaNode;
    wifiApNode.Create(1);
    wifiStaNode.Create(1);
 
    YansWifiPhyHelper phy;
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    phy.SetChannel(channel.Create());
 
    WifiHelper wifi;
    wifi.SetStandard(WIFI_STANDARD_80211n);
    wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager",
                                 "DataMode",
                                 StringValue("HtMcs7"),
                                 "ControlMode",
                                 StringValue("HtMcs7"));
 
    WifiMacHelper mac;
    NetDeviceContainer apDevice;
    phy.Set("ChannelSettings", StringValue("{36, 20, BAND_5GHZ, 0}"));
    mac.SetType("ns3::ApWifiMac", "EnableBeaconJitter", BooleanValue(false));
    apDevice = wifi.Install(phy, mac, wifiApNode);
 
    NetDeviceContainer staDevice;
    mac.SetType("ns3::StaWifiMac");
    staDevice = wifi.Install(phy, mac, wifiStaNode);
 
    // Assign fixed streams to random variables in use
    wifi.AssignStreams(apDevice, streamNumber);
    wifi.AssignStreams(staDevice, streamNumber);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));
    positionAlloc->Add(Vector(1.0, 0.0, 0.0));
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(wifiApNode);
    mobility.Install(wifiStaNode);
 
    auto rxErrorModel = CreateObject<ListErrorModel>();
    Ptr<WifiMac> wifiMac;
    switch (rcvErrorType)
    {
    case AP:
        wifiMac = DynamicCast<WifiNetDevice>(apDevice.Get(0))->GetMac();
        break;
    case STA:
        wifiMac = DynamicCast<WifiNetDevice>(staDevice.Get(0))->GetMac();
        break;
    default:
        NS_ABORT_MSG("Station type " << +rcvErrorType << " cannot be used here");
    }
    wifiMac->GetWifiPhy(0)->SetPostReceptionErrorModel(rxErrorModel);
 
    Config::Connect(
        "/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/$ns3::WifiPhy/MonitorSnifferRx",
        MakeCallback(&Bug2470TestCase::RxCallback, this));
    Config::Connect("/NodeList/*/DeviceList/*/Phy/State/RxError",
                    MakeCallback(&Bug2470TestCase::RxErrorCallback, this));
    Config::Connect("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Mac/$ns3::WifiMac/BE_Txop/"
                    "BlockAckManager/AgreementState",
                    MakeCallback(&Bug2470TestCase::AddbaStateChangedCallback, this));
    Config::Connect("/NodeList/" + std::to_string(rcvErrorType == STA ? 0 /* AP */ : 1 /* STA */) +
                        "/DeviceList/*/$ns3::WifiNetDevice/Phys/0/PhyTxPsduBegin",
                    MakeCallback(&Bug2470TestCase::TxCallback, this).Bind(rxErrorModel));
 
    Simulator::Schedule(Seconds(0.5),
                        &Bug2470TestCase::SendPacketBurst,
                        this,
                        1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(0.5) + MicroSeconds(5),
                        &Bug2470TestCase::SendPacketBurst,
                        this,
                        4,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(0.8),
                        &Bug2470TestCase::SendPacketBurst,
                        this,
                        1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(0.8) + MicroSeconds(5),
                        &Bug2470TestCase::SendPacketBurst,
                        this,
                        4,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
 
    Simulator::Stop(Seconds(1.0));
    Simulator::Run();
    Simulator::Destroy();
}
 
void
Bug2470TestCase::DoRun()
{
    {
        RunSubtest(STA);
        NS_TEST_ASSERT_MSG_EQ(m_failedActionCount, 7, "ADDBA request packets are not failed");
        // There are two sets of 5 packets to be transmitted. The first 5 packets should be sent by
        // normal MPDU because of failed ADDBA handshake. For the second set, the first packet
        // should be sent by normal MPDU, and the rest with A-MPDU. In total we expect to receive 6
        // normal MPDU packets and 4 A-MPDU packet.
        NS_TEST_ASSERT_MSG_EQ(m_receivedNormalMpduCount,
                              6,
                              "Receiving incorrect number of normal MPDU packet on subtest 1");
        NS_TEST_ASSERT_MSG_EQ(m_receivedAmpduCount,
                              4,
                              "Receiving incorrect number of A-MPDU packets on subtest 1");
 
        NS_TEST_ASSERT_MSG_EQ(m_addbaEstablishedCount,
                              1,
                              "Incorrect number of times the ADDBA state machine was in "
                              "established state on subtest 1");
        NS_TEST_ASSERT_MSG_EQ(
            m_addbaPendingCount,
            2,
            "Incorrect number of times the ADDBA state machine was in pending state on subtest 1");
        NS_TEST_ASSERT_MSG_EQ(
            m_addbaRejectedCount,
            0,
            "Incorrect number of times the ADDBA state machine was in rejected state on subtest 1");
        NS_TEST_ASSERT_MSG_EQ(
            m_addbaNoReplyCount,
            1,
            "Incorrect number of times the ADDBA state machine was in no_reply state on subtest 1");
        NS_TEST_ASSERT_MSG_EQ(
            m_addbaResetCount,
            1,
            "Incorrect number of times the ADDBA state machine was in reset state on subtest 1");
    }
 
    m_receivedNormalMpduCount = 0;
    m_receivedAmpduCount = 0;
    m_failedActionCount = 0;
    m_addbaEstablishedCount = 0;
    m_addbaPendingCount = 0;
    m_addbaRejectedCount = 0;
    m_addbaNoReplyCount = 0;
    m_addbaResetCount = 0;
 
    {
        RunSubtest(AP);
        NS_TEST_ASSERT_MSG_EQ(m_failedActionCount, 7, "ADDBA response packets are not failed");
        // Similar to subtest 1, we also expect to receive 6 normal MPDU packets and 4 A-MPDU
        // packets.
        NS_TEST_ASSERT_MSG_EQ(m_receivedNormalMpduCount,
                              6,
                              "Receiving incorrect number of normal MPDU packet on subtest 2");
        NS_TEST_ASSERT_MSG_EQ(m_receivedAmpduCount,
                              4,
                              "Receiving incorrect number of A-MPDU packet on subtest 2");
 
        NS_TEST_ASSERT_MSG_EQ(m_addbaEstablishedCount,
                              1,
                              "Incorrect number of times the ADDBA state machine was in "
                              "established state on subtest 2");
        NS_TEST_ASSERT_MSG_EQ(
            m_addbaPendingCount,
            2,
            "Incorrect number of times the ADDBA state machine was in pending state on subtest 2");
        NS_TEST_ASSERT_MSG_EQ(
            m_addbaRejectedCount,
            0,
            "Incorrect number of times the ADDBA state machine was in rejected state on subtest 2");
        NS_TEST_ASSERT_MSG_EQ(
            m_addbaNoReplyCount,
            1,
            "Incorrect number of times the ADDBA state machine was in no_reply state on subtest 2");
        NS_TEST_ASSERT_MSG_EQ(
            m_addbaResetCount,
            1,
            "Incorrect number of times the ADDBA state machine was in reset state on subtest 2");
    }
 
    // TODO: In the second test set, it does not go to reset state since ADDBA response is received
    // after timeout (NO_REPLY) but before it does not enter RESET state. More tests should be
    // written to verify all possible scenarios.
}
 
//-----------------------------------------------------------------------------
class Issue40TestCase : public TestCase
{
  public:
    Issue40TestCase();
    ~Issue40TestCase() override;
    void DoRun() override;
 
  private:
    void RunOne(bool useAmpdu);
 
    void RxSuccessCallback(std::string context, Ptr<const Packet> p);
    void SendPackets(uint8_t numPackets, Ptr<NetDevice> sourceDevice, Address& destination);
    void TxFinalDataFailedCallback(std::string context, Mac48Address address);
 
    uint16_t m_rxCount; 
    uint16_t m_txCount; 
    uint16_t
        m_txMacFinalDataFailedCount; 
};
 
Issue40TestCase::Issue40TestCase()
    : TestCase("Test case for issue #40"),
      m_rxCount(0),
      m_txCount(0),
      m_txMacFinalDataFailedCount(0)
{
}
 
Issue40TestCase::~Issue40TestCase()
{
}
 
void
Issue40TestCase::RxSuccessCallback(std::string context, Ptr<const Packet> p)
{
    m_rxCount++;
}
 
void
Issue40TestCase::SendPackets(uint8_t numPackets, Ptr<NetDevice> sourceDevice, Address& destination)
{
    for (uint8_t i = 0; i < numPackets; i++)
    {
        Ptr<Packet> pkt = Create<Packet>(1000); // 1000 dummy bytes of data
        sourceDevice->Send(pkt, destination, 0);
        m_txCount++;
    }
}
 
void
Issue40TestCase::TxFinalDataFailedCallback(std::string context, Mac48Address address)
{
    m_txMacFinalDataFailedCount++;
}
 
void
Issue40TestCase::RunOne(bool useAmpdu)
{
    m_rxCount = 0;
    m_txCount = 0;
    m_txMacFinalDataFailedCount = 0;
 
    RngSeedManager::SetSeed(1);
    RngSeedManager::SetRun(1);
    int64_t streamNumber = 100;
 
    NodeContainer wifiApNode;
    NodeContainer wifiStaNode;
    wifiApNode.Create(1);
    wifiStaNode.Create(1);
 
    YansWifiPhyHelper phy;
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    phy.SetChannel(channel.Create());
 
    WifiHelper wifi;
    wifi.SetStandard(WIFI_STANDARD_80211ac);
    wifi.SetRemoteStationManager("ns3::IdealWifiManager");
 
    WifiMacHelper mac;
    NetDeviceContainer apDevice;
    mac.SetType("ns3::ApWifiMac");
    apDevice = wifi.Install(phy, mac, wifiApNode);
 
    NetDeviceContainer staDevice;
    mac.SetType("ns3::StaWifiMac");
    staDevice = wifi.Install(phy, mac, wifiStaNode);
 
    // Assign fixed streams to random variables in use
    wifi.AssignStreams(apDevice, streamNumber);
    wifi.AssignStreams(staDevice, streamNumber);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));
    positionAlloc->Add(Vector(10.0, 0.0, 0.0));
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(wifiApNode);
 
    mobility.SetMobilityModel("ns3::WaypointMobilityModel");
    mobility.Install(wifiStaNode);
 
    Config::Connect("/NodeList/*/DeviceList/*/RemoteStationManager/MacTxFinalDataFailed",
                    MakeCallback(&Issue40TestCase::TxFinalDataFailedCallback, this));
    Config::Connect("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Mac/$ns3::WifiMac/MacRx",
                    MakeCallback(&Issue40TestCase::RxSuccessCallback, this));
 
    Ptr<WaypointMobilityModel> staWaypointMobility =
        DynamicCast<WaypointMobilityModel>(wifiStaNode.Get(0)->GetObject<MobilityModel>());
    staWaypointMobility->AddWaypoint(Waypoint(Seconds(1.0), Vector(10.0, 0.0, 0.0)));
    staWaypointMobility->AddWaypoint(Waypoint(Seconds(1.5), Vector(50.0, 0.0, 0.0)));
 
    if (useAmpdu)
    {
        // Disable use of BAR that are sent with the lowest modulation so that we can also reproduce
        // the problem with A-MPDU, i.e. the lack of feedback about SNR change
        Ptr<WifiNetDevice> ap_device = DynamicCast<WifiNetDevice>(apDevice.Get(0));
        PointerValue ptr;
        ap_device->GetMac()->GetAttribute("BE_Txop", ptr);
        ptr.Get<QosTxop>()->SetAttribute("UseExplicitBarAfterMissedBlockAck", BooleanValue(false));
    }
 
    // Transmit a first data packet before the station moves: it should be sent with a high
    // modulation and successfully received
    Simulator::Schedule(Seconds(0.5),
                        &Issue40TestCase::SendPackets,
                        this,
                        useAmpdu ? 2 : 1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
 
    // Transmit a second data packet once the station is away from the access point: it should be
    // sent with the same high modulation and be unsuccessfuly received
    Simulator::Schedule(Seconds(2.0),
                        &Issue40TestCase::SendPackets,
                        this,
                        useAmpdu ? 2 : 1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
 
    // Keep on transmitting data packets while the station is away from the access point: it should
    // be sent with a lower modulation and be successfully received
    Simulator::Schedule(Seconds(2.1),
                        &Issue40TestCase::SendPackets,
                        this,
                        useAmpdu ? 2 : 1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(2.2),
                        &Issue40TestCase::SendPackets,
                        this,
                        useAmpdu ? 2 : 1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(2.3),
                        &Issue40TestCase::SendPackets,
                        this,
                        useAmpdu ? 2 : 1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(2.4),
                        &Issue40TestCase::SendPackets,
                        this,
                        useAmpdu ? 2 : 1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(2.5),
                        &Issue40TestCase::SendPackets,
                        this,
                        useAmpdu ? 2 : 1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
 
    Simulator::Stop(Seconds(3.0));
    Simulator::Run();
 
    NS_TEST_ASSERT_MSG_EQ(m_txCount,
                          (useAmpdu ? 14 : 7),
                          "Incorrect number of transmitted packets");
    NS_TEST_ASSERT_MSG_EQ(m_rxCount,
                          (useAmpdu ? 12 : 6),
                          "Incorrect number of successfully received packets");
    NS_TEST_ASSERT_MSG_EQ(m_txMacFinalDataFailedCount, 1, "Incorrect number of dropped TX packets");
 
    Simulator::Destroy();
}
 
void
Issue40TestCase::DoRun()
{
    // Test without A-MPDU
    RunOne(false);
 
    // Test with A-MPDU
    RunOne(true);
}
 
//-----------------------------------------------------------------------------
class Issue169TestCase : public TestCase
{
  public:
    Issue169TestCase();
    ~Issue169TestCase() override;
    void DoRun() override;
 
  private:
    void SendPackets(uint8_t numPackets,
                     Ptr<NetDevice> sourceDevice,
                     Address& destination,
                     uint8_t priority);
 
    void TxCallback(std::string context,
                    WifiConstPsduMap psdus,
                    WifiTxVector txVector,
                    double txPowerW);
};
 
Issue169TestCase::Issue169TestCase()
    : TestCase("Test case for issue #169")
{
}
 
Issue169TestCase::~Issue169TestCase()
{
}
 
void
Issue169TestCase::SendPackets(uint8_t numPackets,
                              Ptr<NetDevice> sourceDevice,
                              Address& destination,
                              uint8_t priority)
{
    SocketPriorityTag priorityTag;
    priorityTag.SetPriority(priority);
    for (uint8_t i = 0; i < numPackets; i++)
    {
        Ptr<Packet> packet = Create<Packet>(1000); // 1000 dummy bytes of data
        packet->AddPacketTag(priorityTag);
        sourceDevice->Send(packet, destination, 0);
    }
}
 
void
Issue169TestCase::TxCallback(std::string context,
                             WifiConstPsduMap psdus,
                             WifiTxVector txVector,
                             double txPowerW)
{
    if (psdus.begin()->second->GetSize() >= 1000)
    {
        NS_TEST_ASSERT_MSG_EQ(txVector.GetMode().GetModulationClass(),
                              WifiModulationClass::WIFI_MOD_CLASS_VHT,
                              "Ideal rate manager selected incorrect modulation class");
    }
}
 
void
Issue169TestCase::DoRun()
{
    RngSeedManager::SetSeed(1);
    RngSeedManager::SetRun(1);
    int64_t streamNumber = 100;
 
    NodeContainer wifiApNode;
    NodeContainer wifiStaNode;
    wifiApNode.Create(1);
    wifiStaNode.Create(1);
 
    YansWifiPhyHelper phy;
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    phy.SetChannel(channel.Create());
 
    WifiHelper wifi;
    wifi.SetStandard(WIFI_STANDARD_80211ac);
    wifi.SetRemoteStationManager("ns3::IdealWifiManager");
 
    WifiMacHelper mac;
    NetDeviceContainer apDevice;
    mac.SetType("ns3::ApWifiMac");
    apDevice = wifi.Install(phy, mac, wifiApNode);
 
    NetDeviceContainer staDevice;
    mac.SetType("ns3::StaWifiMac");
    staDevice = wifi.Install(phy, mac, wifiStaNode);
 
    // Assign fixed streams to random variables in use
    wifi.AssignStreams(apDevice, streamNumber);
    wifi.AssignStreams(staDevice, streamNumber);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));
    positionAlloc->Add(Vector(1.0, 0.0, 0.0));
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(wifiApNode);
    mobility.Install(wifiStaNode);
 
    Config::Connect("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/$ns3::WifiPhy/PhyTxPsduBegin",
                    MakeCallback(&Issue169TestCase::TxCallback, this));
 
    // Send best-effort packet (i.e. priority 0)
    Simulator::Schedule(Seconds(0.5),
                        &Issue169TestCase::SendPackets,
                        this,
                        1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress(),
                        0);
 
    // Send non best-effort (voice) packet (i.e. priority 6)
    Simulator::Schedule(Seconds(1.0),
                        &Issue169TestCase::SendPackets,
                        this,
                        1,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress(),
                        6);
 
    Simulator::Stop(Seconds(2.0));
    Simulator::Run();
 
    Simulator::Destroy();
}
 
//-----------------------------------------------------------------------------
class IdealRateManagerChannelWidthTest : public TestCase
{
  public:
    IdealRateManagerChannelWidthTest();
    ~IdealRateManagerChannelWidthTest() override;
    void DoRun() override;
 
  private:
    void ChangeChannelWidth(uint16_t channelWidth);
 
    void SendPacket(Ptr<NetDevice> sourceDevice, Address& destination);
 
    void TxCallback(std::string context,
                    WifiConstPsduMap psduMap,
                    WifiTxVector txVector,
                    double txPowerW);
 
    void CheckLastSelectedMode(WifiMode expectedMode);
 
    WifiMode m_txMode; 
};
 
IdealRateManagerChannelWidthTest::IdealRateManagerChannelWidthTest()
    : TestCase("Test case for use of channel bonding with Ideal rate manager")
{
}
 
IdealRateManagerChannelWidthTest::~IdealRateManagerChannelWidthTest()
{
}
 
void
IdealRateManagerChannelWidthTest::ChangeChannelWidth(uint16_t channelWidth)
{
    Config::Set("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelSettings",
                StringValue("{0, " + std::to_string(channelWidth) + ", BAND_5GHZ, 0}"));
}
 
void
IdealRateManagerChannelWidthTest::SendPacket(Ptr<NetDevice> sourceDevice, Address& destination)
{
    Ptr<Packet> packet = Create<Packet>(1000);
    sourceDevice->Send(packet, destination, 0);
}
 
void
IdealRateManagerChannelWidthTest::TxCallback(std::string context,
                                             WifiConstPsduMap psduMap,
                                             WifiTxVector txVector,
                                             double txPowerW)
{
    if (psduMap.begin()->second->GetSize() >= 1000)
    {
        m_txMode = txVector.GetMode();
    }
}
 
void
IdealRateManagerChannelWidthTest::CheckLastSelectedMode(WifiMode expectedMode)
{
    NS_TEST_ASSERT_MSG_EQ(m_txMode,
                          expectedMode,
                          "Last selected WifiMode "
                              << m_txMode << " does not match expected WifiMode " << expectedMode);
}
 
void
IdealRateManagerChannelWidthTest::DoRun()
{
    RngSeedManager::SetSeed(1);
    RngSeedManager::SetRun(1);
    int64_t streamNumber = 100;
 
    NodeContainer wifiApNode;
    NodeContainer wifiStaNode;
    wifiApNode.Create(1);
    wifiStaNode.Create(1);
 
    YansWifiPhyHelper phy;
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    phy.SetChannel(channel.Create());
 
    WifiHelper wifi;
    wifi.SetStandard(WIFI_STANDARD_80211ac);
    wifi.SetRemoteStationManager("ns3::IdealWifiManager");
 
    WifiMacHelper mac;
    NetDeviceContainer apDevice;
    mac.SetType("ns3::ApWifiMac");
    apDevice = wifi.Install(phy, mac, wifiApNode);
 
    NetDeviceContainer staDevice;
    mac.SetType("ns3::StaWifiMac");
    staDevice = wifi.Install(phy, mac, wifiStaNode);
 
    // Assign fixed streams to random variables in use
    wifi.AssignStreams(apDevice, streamNumber);
    wifi.AssignStreams(staDevice, streamNumber);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));
    positionAlloc->Add(Vector(50.0, 0.0, 0.0));
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(wifiApNode);
    mobility.Install(wifiStaNode);
 
    Config::Connect("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/$ns3::WifiPhy/PhyTxPsduBegin",
                    MakeCallback(&IdealRateManagerChannelWidthTest::TxCallback, this));
 
    // Set channel width to 80 MHz & send packet
    Simulator::Schedule(Seconds(0.5),
                        &IdealRateManagerChannelWidthTest::ChangeChannelWidth,
                        this,
                        80);
    Simulator::Schedule(Seconds(1.0),
                        &IdealRateManagerChannelWidthTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected rate should be VHT-MCS 1
    Simulator::Schedule(Seconds(1.1),
                        &IdealRateManagerChannelWidthTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs1());
 
    // Set channel width to 20 MHz & send packet
    Simulator::Schedule(Seconds(1.5),
                        &IdealRateManagerChannelWidthTest::ChangeChannelWidth,
                        this,
                        20);
    Simulator::Schedule(Seconds(2.0),
                        &IdealRateManagerChannelWidthTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected rate should be VHT-MCS 3 since SNR should be 6 dB higher than previously
    Simulator::Schedule(Seconds(2.1),
                        &IdealRateManagerChannelWidthTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs3());
 
    // Set channel width to 40 MHz & send packet
    Simulator::Schedule(Seconds(2.5),
                        &IdealRateManagerChannelWidthTest::ChangeChannelWidth,
                        this,
                        40);
    Simulator::Schedule(Seconds(3.0),
                        &IdealRateManagerChannelWidthTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected rate should be VHT-MCS 2 since SNR should be 3 dB lower than previously
    Simulator::Schedule(Seconds(3.1),
                        &IdealRateManagerChannelWidthTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs2());
 
    Simulator::Stop(Seconds(3.2));
    Simulator::Run();
 
    Simulator::Destroy();
}
 
//-----------------------------------------------------------------------------
class IdealRateManagerMimoTest : public TestCase
{
  public:
    IdealRateManagerMimoTest();
    ~IdealRateManagerMimoTest() override;
    void DoRun() override;
 
  private:
    void SetApMimoSettings(uint8_t antennas, uint8_t maxStreams);
    void SetStaMimoSettings(uint8_t antennas, uint8_t maxStreams);
    void SendPacket(Ptr<NetDevice> sourceDevice, Address& destination);
 
    void TxCallback(std::string context,
                    WifiConstPsduMap psdus,
                    WifiTxVector txVector,
                    double txPowerW);
 
    void CheckLastSelectedMode(WifiMode expectedMode);
    void CheckLastSelectedNss(uint8_t expectedNss);
 
    WifiTxVector m_txVector; 
};
 
IdealRateManagerMimoTest::IdealRateManagerMimoTest()
    : TestCase("Test case for use of imbalanced MIMO settings with Ideal rate manager")
{
}
 
IdealRateManagerMimoTest::~IdealRateManagerMimoTest()
{
}
 
void
IdealRateManagerMimoTest::SetApMimoSettings(uint8_t antennas, uint8_t maxStreams)
{
    Config::Set("/NodeList/0/DeviceList/*/$ns3::WifiNetDevice/Phy/Antennas",
                UintegerValue(antennas));
    Config::Set("/NodeList/0/DeviceList/*/$ns3::WifiNetDevice/Phy/MaxSupportedTxSpatialStreams",
                UintegerValue(maxStreams));
    Config::Set("/NodeList/0/DeviceList/*/$ns3::WifiNetDevice/Phy/MaxSupportedRxSpatialStreams",
                UintegerValue(maxStreams));
}
 
void
IdealRateManagerMimoTest::SetStaMimoSettings(uint8_t antennas, uint8_t maxStreams)
{
    Config::Set("/NodeList/1/DeviceList/*/$ns3::WifiNetDevice/Phy/Antennas",
                UintegerValue(antennas));
    Config::Set("/NodeList/1/DeviceList/*/$ns3::WifiNetDevice/Phy/MaxSupportedTxSpatialStreams",
                UintegerValue(maxStreams));
    Config::Set("/NodeList/1/DeviceList/*/$ns3::WifiNetDevice/Phy/MaxSupportedRxSpatialStreams",
                UintegerValue(maxStreams));
}
 
void
IdealRateManagerMimoTest::SendPacket(Ptr<NetDevice> sourceDevice, Address& destination)
{
    Ptr<Packet> packet = Create<Packet>(1000);
    sourceDevice->Send(packet, destination, 0);
}
 
void
IdealRateManagerMimoTest::TxCallback(std::string context,
                                     WifiConstPsduMap psdus,
                                     WifiTxVector txVector,
                                     double txPowerW)
{
    if (psdus.begin()->second->GetSize() >= 1000)
    {
        m_txVector = txVector;
    }
}
 
void
IdealRateManagerMimoTest::CheckLastSelectedNss(uint8_t expectedNss)
{
    NS_TEST_ASSERT_MSG_EQ(m_txVector.GetNss(),
                          expectedNss,
                          "Last selected Nss " << m_txVector.GetNss()
                                               << " does not match expected Nss " << expectedNss);
}
 
void
IdealRateManagerMimoTest::CheckLastSelectedMode(WifiMode expectedMode)
{
    NS_TEST_ASSERT_MSG_EQ(m_txVector.GetMode(),
                          expectedMode,
                          "Last selected WifiMode " << m_txVector.GetMode()
                                                    << " does not match expected WifiMode "
                                                    << expectedMode);
}
 
void
IdealRateManagerMimoTest::DoRun()
{
    RngSeedManager::SetSeed(1);
    RngSeedManager::SetRun(1);
    int64_t streamNumber = 100;
 
    NodeContainer wifiApNode;
    NodeContainer wifiStaNode;
    wifiApNode.Create(1);
    wifiStaNode.Create(1);
 
    YansWifiPhyHelper phy;
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    phy.SetChannel(channel.Create());
 
    WifiHelper wifi;
    wifi.SetStandard(WIFI_STANDARD_80211ac);
    wifi.SetRemoteStationManager("ns3::IdealWifiManager");
 
    WifiMacHelper mac;
    NetDeviceContainer apDevice;
    mac.SetType("ns3::ApWifiMac");
    apDevice = wifi.Install(phy, mac, wifiApNode);
 
    NetDeviceContainer staDevice;
    mac.SetType("ns3::StaWifiMac");
    staDevice = wifi.Install(phy, mac, wifiStaNode);
 
    // Assign fixed streams to random variables in use
    wifi.AssignStreams(apDevice, streamNumber);
    wifi.AssignStreams(staDevice, streamNumber);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));
    positionAlloc->Add(Vector(40.0, 0.0, 0.0));
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(wifiApNode);
    mobility.Install(wifiStaNode);
 
    Config::Connect("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/$ns3::WifiPhy/PhyTxPsduBegin",
                    MakeCallback(&IdealRateManagerMimoTest::TxCallback, this));
 
    // TX: 1 antenna
    Simulator::Schedule(Seconds(0.9), &IdealRateManagerMimoTest::SetApMimoSettings, this, 1, 1);
    // RX: 1 antenna
    Simulator::Schedule(Seconds(0.9), &IdealRateManagerMimoTest::SetStaMimoSettings, this, 1, 1);
    // Send packets (2 times to get one feedback)
    Simulator::Schedule(Seconds(1.0),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(1.1),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected NSS should be 1 since both TX and RX support a single antenna
    Simulator::Schedule(Seconds(1.2), &IdealRateManagerMimoTest::CheckLastSelectedNss, this, 1);
    // Selected rate should be VHT-MCS 2 because of settings and distance between TX and RX
    Simulator::Schedule(Seconds(1.2),
                        &IdealRateManagerMimoTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs2());
 
    // TX: 1 antenna
    Simulator::Schedule(Seconds(1.9), &IdealRateManagerMimoTest::SetApMimoSettings, this, 1, 1);
    // RX: 2 antennas, but only supports 1 spatial stream
    Simulator::Schedule(Seconds(1.9), &IdealRateManagerMimoTest::SetStaMimoSettings, this, 2, 1);
    // Send packets (2 times to get one feedback)
    Simulator::Schedule(Seconds(2.0),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(2.1),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected NSS should be 1 since both TX and RX support a single antenna
    Simulator::Schedule(Seconds(2.2), &IdealRateManagerMimoTest::CheckLastSelectedNss, this, 1);
    // Selected rate should be increased to VHT-MCS 3 because of RX diversity resulting in SNR
    // improvement of about 3dB
    Simulator::Schedule(Seconds(2.2),
                        &IdealRateManagerMimoTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs3());
 
    // TX: 1 antenna
    Simulator::Schedule(Seconds(2.9), &IdealRateManagerMimoTest::SetApMimoSettings, this, 1, 1);
    // RX: 2 antennas, and supports 2 spatial streams
    Simulator::Schedule(Seconds(2.9), &IdealRateManagerMimoTest::SetStaMimoSettings, this, 2, 2);
    // Send packets (2 times to get one feedback)
    Simulator::Schedule(Seconds(3.0),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(3.1),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected NSS should be 1 since TX supports a single antenna
    Simulator::Schedule(Seconds(3.2), &IdealRateManagerMimoTest::CheckLastSelectedNss, this, 1);
    // Selected rate should be as previously
    Simulator::Schedule(Seconds(3.2),
                        &IdealRateManagerMimoTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs3());
 
    // TX: 2 antennas, but only supports 1 spatial stream
    Simulator::Schedule(Seconds(3.9), &IdealRateManagerMimoTest::SetApMimoSettings, this, 2, 1);
    // RX: 1 antenna
    Simulator::Schedule(Seconds(3.9), &IdealRateManagerMimoTest::SetStaMimoSettings, this, 1, 1);
    // Send packets (2 times to get one feedback)
    Simulator::Schedule(Seconds(4.0),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(4.1),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected NSS should be 1 since both TX and RX support a single antenna
    Simulator::Schedule(Seconds(4.2), &IdealRateManagerMimoTest::CheckLastSelectedNss, this, 1);
    // Selected rate should be VHT-MCS 2 because we do no longer have diversity in this scenario
    // (more antennas at TX does not result in SNR improvement in AWGN channel)
    Simulator::Schedule(Seconds(4.2),
                        &IdealRateManagerMimoTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs2());
 
    // TX: 2 antennas, but only supports 1 spatial stream
    Simulator::Schedule(Seconds(4.9), &IdealRateManagerMimoTest::SetApMimoSettings, this, 2, 1);
    // RX: 2 antennas, but only supports 1 spatial stream
    Simulator::Schedule(Seconds(4.9), &IdealRateManagerMimoTest::SetStaMimoSettings, this, 2, 1);
    // Send packets (2 times to get one feedback)
    Simulator::Schedule(Seconds(5.0),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(5.1),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected NSS should be 1 since both TX and RX support a single antenna
    Simulator::Schedule(Seconds(5.2), &IdealRateManagerMimoTest::CheckLastSelectedNss, this, 1);
    // Selected rate should be increased to VHT-MCS 3 because of RX diversity resulting in SNR
    // improvement of about 3dB (more antennas at TX does not result in SNR improvement in AWGN
    // channel)
    Simulator::Schedule(Seconds(5.2),
                        &IdealRateManagerMimoTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs3());
 
    // TX: 2 antennas, but only supports 1 spatial stream
    Simulator::Schedule(Seconds(5.9), &IdealRateManagerMimoTest::SetApMimoSettings, this, 2, 1);
    // RX: 2 antennas, and supports 2 spatial streams
    Simulator::Schedule(Seconds(5.9), &IdealRateManagerMimoTest::SetStaMimoSettings, this, 2, 2);
    // Send packets (2 times to get one feedback)
    Simulator::Schedule(Seconds(6.0),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(6.1),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected NSS should be 1 since TX supports a single antenna
    Simulator::Schedule(Seconds(6.2), &IdealRateManagerMimoTest::CheckLastSelectedNss, this, 1);
    // Selected rate should be as previously
    Simulator::Schedule(Seconds(6.2),
                        &IdealRateManagerMimoTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs3());
 
    // TX: 2 antennas, and supports 2 spatial streams
    Simulator::Schedule(Seconds(6.9), &IdealRateManagerMimoTest::SetApMimoSettings, this, 2, 2);
    // RX: 1 antenna
    Simulator::Schedule(Seconds(6.9), &IdealRateManagerMimoTest::SetStaMimoSettings, this, 1, 1);
    // Send packets (2 times to get one feedback)
    Simulator::Schedule(Seconds(7.0),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(7.1),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected NSS should be 1 since RX supports a single antenna
    Simulator::Schedule(Seconds(7.2), &IdealRateManagerMimoTest::CheckLastSelectedNss, this, 1);
    // Selected rate should be VHT-MCS 2 because we do no longer have diversity in this scenario
    // (more antennas at TX does not result in SNR improvement in AWGN channel)
    Simulator::Schedule(Seconds(7.2),
                        &IdealRateManagerMimoTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs2());
 
    // TX: 2 antennas, and supports 2 spatial streams
    Simulator::Schedule(Seconds(7.9), &IdealRateManagerMimoTest::SetApMimoSettings, this, 2, 2);
    // RX: 2 antennas, but only supports 1 spatial stream
    Simulator::Schedule(Seconds(7.9), &IdealRateManagerMimoTest::SetStaMimoSettings, this, 2, 1);
    // Send packets (2 times to get one feedback)
    Simulator::Schedule(Seconds(8.0),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(8.1),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected NSS should be 1 since RX supports a single antenna
    Simulator::Schedule(Seconds(8.2), &IdealRateManagerMimoTest::CheckLastSelectedNss, this, 1);
    // Selected rate should be increased to VHT-MCS 3 because of RX diversity resulting in SNR
    // improvement of about 3dB (more antennas at TX does not result in SNR improvement in AWGN
    // channel)
    Simulator::Schedule(Seconds(8.2),
                        &IdealRateManagerMimoTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs3());
 
    // TX: 2 antennas, and supports 2 spatial streams
    Simulator::Schedule(Seconds(8.9), &IdealRateManagerMimoTest::SetApMimoSettings, this, 2, 2);
    // RX: 2 antennas, and supports 2 spatial streams
    Simulator::Schedule(Seconds(8.9), &IdealRateManagerMimoTest::SetStaMimoSettings, this, 2, 2);
    // Send packets (2 times to get one feedback)
    Simulator::Schedule(Seconds(9.0),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(9.1),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    // Selected NSS should be 2 since both TX and RX support 2 antennas
    Simulator::Schedule(Seconds(9.2), &IdealRateManagerMimoTest::CheckLastSelectedNss, this, 2);
    // Selected rate should be the same as without diversity, as it uses 2 spatial streams so there
    // is no more benefits from diversity in AWGN channels
    Simulator::Schedule(Seconds(9.2),
                        &IdealRateManagerMimoTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs2());
 
    // Verify we can go back to initial situation
    Simulator::Schedule(Seconds(9.9), &IdealRateManagerMimoTest::SetApMimoSettings, this, 1, 1);
    Simulator::Schedule(Seconds(9.9), &IdealRateManagerMimoTest::SetStaMimoSettings, this, 1, 1);
    Simulator::Schedule(Seconds(10.0),
                        &IdealRateManagerMimoTest::SendPacket,
                        this,
                        apDevice.Get(0),
                        staDevice.Get(0)->GetAddress());
    Simulator::Schedule(Seconds(10.1), &IdealRateManagerMimoTest::CheckLastSelectedNss, this, 1);
    Simulator::Schedule(Seconds(10.1),
                        &IdealRateManagerMimoTest::CheckLastSelectedMode,
                        this,
                        VhtPhy::GetVhtMcs2());
 
    Simulator::Stop(Seconds(10.2));
    Simulator::Run();
    Simulator::Destroy();
}
 
//-----------------------------------------------------------------------------
class HeRuMcsDataRateTestCase : public TestCase
{
  public:
    HeRuMcsDataRateTestCase();
 
  private:
    bool CheckDataRate(HeRu::RuType ruType,
                       std::string mcs,
                       uint8_t nss,
                       uint16_t guardInterval,
                       uint16_t expectedDataRate);
    void DoRun() override;
};
 
HeRuMcsDataRateTestCase::HeRuMcsDataRateTestCase()
    : TestCase("Check data rates for different RU types.")
{
}
 
bool
HeRuMcsDataRateTestCase::CheckDataRate(HeRu::RuType ruType,
                                       std::string mcs,
                                       uint8_t nss,
                                       uint16_t guardInterval,
                                       uint16_t expectedDataRate)
{
    uint16_t approxWidth = HeRu::GetBandwidth(ruType);
    WifiMode mode(mcs);
    uint64_t dataRate = round(mode.GetDataRate(approxWidth, guardInterval, nss) / 100000.0);
    NS_ABORT_MSG_IF(dataRate > 65535, "Rate is way too high");
    if (static_cast<uint16_t>(dataRate) != expectedDataRate)
    {
        std::cerr << "RU=" << ruType << " mode=" << mode << " Nss=" << +nss
                  << " guardInterval=" << guardInterval << " expected=" << expectedDataRate
                  << " x100kbps"
                  << " computed=" << static_cast<uint16_t>(dataRate) << " x100kbps" << std::endl;
        return false;
    }
    return true;
}
 
void
HeRuMcsDataRateTestCase::DoRun()
{
    bool retval = true;
 
    // 26-tone RU, browse over all MCSs, GIs and Nss's (up to 4, current max)
    retval = retval && CheckDataRate(HeRu::RU_26_TONE, "HeMcs0", 1, 800, 9) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs1", 1, 1600, 17) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs2", 1, 3200, 23) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs3", 1, 3200, 30) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs4", 2, 1600, 100) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs5", 3, 1600, 200) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs6", 4, 1600, 300) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs7", 4, 3200, 300) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs8", 4, 1600, 400) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs9", 4, 3200, 400) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs10", 4, 1600, 500) &&
             CheckDataRate(HeRu::RU_26_TONE, "HeMcs11", 4, 3200, 500);
 
    NS_TEST_EXPECT_MSG_EQ(
        retval,
        true,
        "26-tone RU  data rate verification for different MCSs, GIs, and Nss's failed");
 
    // Check other RU sizes
    retval = retval && CheckDataRate(HeRu::RU_52_TONE, "HeMcs2", 1, 1600, 50) &&
             CheckDataRate(HeRu::RU_106_TONE, "HeMcs9", 1, 800, 500) &&
             CheckDataRate(HeRu::RU_242_TONE, "HeMcs5", 1, 1600, 650) &&
             CheckDataRate(HeRu::RU_484_TONE, "HeMcs3", 1, 1600, 650) &&
             CheckDataRate(HeRu::RU_996_TONE, "HeMcs5", 1, 3200, 2450) &&
             CheckDataRate(HeRu::RU_2x996_TONE, "HeMcs3", 1, 3200, 2450);
 
    NS_TEST_EXPECT_MSG_EQ(retval,
                          true,
                          "Data rate verification for RUs above 52-tone RU (included) failed");
}
 
class WifiTestSuite : public TestSuite
{
  public:
    WifiTestSuite();
};
 
WifiTestSuite::WifiTestSuite()
    : TestSuite("wifi-devices", UNIT)
{
    AddTestCase(new WifiTest, TestCase::QUICK);
    AddTestCase(new QosUtilsIsOldPacketTest, TestCase::QUICK);
    AddTestCase(new InterferenceHelperSequenceTest, TestCase::QUICK); // Bug 991
    AddTestCase(new DcfImmediateAccessBroadcastTestCase, TestCase::QUICK);
    AddTestCase(new Bug730TestCase, TestCase::QUICK); // Bug 730
    AddTestCase(new QosFragmentationTestCase, TestCase::QUICK);
    AddTestCase(new SetChannelFrequencyTest, TestCase::QUICK);
    AddTestCase(new Bug2222TestCase, TestCase::QUICK);            // Bug 2222
    AddTestCase(new Bug2843TestCase, TestCase::QUICK);            // Bug 2843
    AddTestCase(new Bug2831TestCase, TestCase::QUICK);            // Bug 2831
    AddTestCase(new StaWifiMacScanningTestCase, TestCase::QUICK); // Bug 2399
    AddTestCase(new Bug2470TestCase, TestCase::QUICK);            // Bug 2470
    AddTestCase(new Issue40TestCase, TestCase::QUICK);            // Issue #40
    AddTestCase(new Issue169TestCase, TestCase::QUICK);           // Issue #169
    AddTestCase(new IdealRateManagerChannelWidthTest, TestCase::QUICK);
    AddTestCase(new IdealRateManagerMimoTest, TestCase::QUICK);
    AddTestCase(new HeRuMcsDataRateTestCase, TestCase::QUICK);
}
 
static WifiTestSuite g_wifiTestSuite;