wifi: Add tests to verify correct behavior of Ideal rate manager when channel bonding is used
This commit is contained in:
Sébastien Deronne
committed by
Sebastien Deronne
Sebastien Deronne
parent
ef52f7c584
commit
ec6307544d
@@ -2480,6 +2480,166 @@ Issue169TestCase::DoRun (void)
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Simulator::Destroy ();
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}
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//-----------------------------------------------------------------------------
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/**
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* Make sure that Ideal rate manager properly selects MCS based on the configured channel width.
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*
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* The scenario considers an access point and a fixed station.
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* The station first sends a 80 MHz PPDU to the access point,
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* for which Ideal rate manager should select VH-MCS 0 based
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* on the distance (no interference generatd in this test). Then,
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* the station sends a 20 MHz PPDU to the access point,
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* which corresponds to a SNR 6 dB higher than previously, hence
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* VHT-MCS 2 should be selected. Finally, the station sends a 40 MHz
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* PPDU to the access point, which means corresponds to a SNR 3 dB
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* lower than previously, hence VHT-MCS 1 should be selected.
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*/
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class IdealRateManagerChannelWidthTest : public TestCase
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{
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public:
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IdealRateManagerChannelWidthTest ();
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virtual ~IdealRateManagerChannelWidthTest ();
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virtual void DoRun (void);
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private:
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/**
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* Change the configured channel width for all nodes
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* \param channelWidth the channel width (in MHz)
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*/
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void ChangeChannelWidth (uint16_t channelWidth);
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/**
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* Triggers the transmission of a 1000 Byte-long data packet from the source device
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* \param sourceDevice pointer to the source NetDevice
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* \param destination address of the destination device
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*/
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void SendPacket (Ptr<NetDevice> sourceDevice, Address& destination);
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/**
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* Callback that indicates a PSDU is being transmitted
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* \param context the context
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* \param psdu the PSDU to transmit
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* \param txVector the TX vector
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* \param txPowerW the TX power (W)
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*/
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void TxCallback (std::string context, Ptr<const WifiPsdu> psdu, WifiTxVector txVector, double txPowerW);
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/**
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* Check if the selected WifiMode is correct
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* \param expectedMode the expected WifiMode
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*/
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void CheckLastSelectedMode (WifiMode expectedMode);
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WifiMode m_txMode; ///< Store the last selected mode to send data packet
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};
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IdealRateManagerChannelWidthTest::IdealRateManagerChannelWidthTest ()
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: TestCase ("Test case for use of channel bonding with Ideal rate manager")
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{
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}
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IdealRateManagerChannelWidthTest::~IdealRateManagerChannelWidthTest ()
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{
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}
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void
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IdealRateManagerChannelWidthTest::ChangeChannelWidth (uint16_t channelWidth)
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{
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Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", UintegerValue (channelWidth));
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}
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void
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IdealRateManagerChannelWidthTest::SendPacket (Ptr<NetDevice> sourceDevice, Address& destination)
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{
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Ptr<Packet> packet = Create<Packet> (1000);
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sourceDevice->Send (packet, destination, 0);
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}
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void
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IdealRateManagerChannelWidthTest::TxCallback (std::string context, Ptr<const WifiPsdu> psdu, WifiTxVector txVector, double txPowerW)
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{
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if (psdu->GetSize () >= 1000)
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{
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m_txMode = txVector.GetMode ();
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}
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}
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void
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IdealRateManagerChannelWidthTest::CheckLastSelectedMode (WifiMode expectedMode)
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{
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NS_TEST_ASSERT_MSG_EQ (m_txMode, expectedMode, "Last selected WifiMode " << m_txMode << " does not match expected WifiMode " << expectedMode);
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}
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void
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IdealRateManagerChannelWidthTest::DoRun (void)
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{
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RngSeedManager::SetSeed (1);
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RngSeedManager::SetRun (1);
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int64_t streamNumber = 100;
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NodeContainer wifiApNode, wifiStaNode;
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wifiApNode.Create (1);
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wifiStaNode.Create (1);
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YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
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YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();
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phy.SetChannel (channel.Create ());
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WifiHelper wifi;
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wifi.SetStandard (WIFI_PHY_STANDARD_80211ac);
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wifi.SetRemoteStationManager ("ns3::IdealWifiManager");
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WifiMacHelper mac;
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NetDeviceContainer apDevice;
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mac.SetType ("ns3::ApWifiMac");
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apDevice = wifi.Install (phy, mac, wifiApNode);
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NetDeviceContainer staDevice;
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mac.SetType ("ns3::StaWifiMac");
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staDevice = wifi.Install (phy, mac, wifiStaNode);
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// Assign fixed streams to random variables in use
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wifi.AssignStreams (apDevice, streamNumber);
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wifi.AssignStreams (staDevice, streamNumber);
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MobilityHelper mobility;
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Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
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positionAlloc->Add (Vector (0.0, 0.0, 0.0));
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positionAlloc->Add (Vector (50.0, 0.0, 0.0));
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mobility.SetPositionAllocator (positionAlloc);
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mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
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mobility.Install (wifiApNode);
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mobility.Install (wifiStaNode);
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Config::Connect ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/$ns3::WifiPhy/PhyTxPsduBegin", MakeCallback (&IdealRateManagerChannelWidthTest::TxCallback, this));
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//Set channel width to 80 MHz & send packet
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Simulator::Schedule (Seconds (0.5), &IdealRateManagerChannelWidthTest::ChangeChannelWidth, this, 80);
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Simulator::Schedule (Seconds (1.0), &IdealRateManagerChannelWidthTest::SendPacket, this, apDevice.Get (0), staDevice.Get (0)->GetAddress ());
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//Selected rate should be VHT-MCS 0
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Simulator::Schedule (Seconds (1.1), &IdealRateManagerChannelWidthTest::CheckLastSelectedMode, this, WifiPhy::GetVhtMcs0 ());
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//Set channel width to 20 MHz & send packet
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Simulator::Schedule (Seconds (1.5), &IdealRateManagerChannelWidthTest::ChangeChannelWidth, this, 20);
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Simulator::Schedule (Seconds (2.0), &IdealRateManagerChannelWidthTest::SendPacket, this, apDevice.Get (0), staDevice.Get (0)->GetAddress ());
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//Selected rate should be VHT-MCS 2 since SNR should be 6 dB higher than previously
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Simulator::Schedule (Seconds (2.1), &IdealRateManagerChannelWidthTest::CheckLastSelectedMode, this, WifiPhy::GetVhtMcs2 ());
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//Set channel width to 40 MHz & send packet
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Simulator::Schedule (Seconds (2.5), &IdealRateManagerChannelWidthTest::ChangeChannelWidth, this, 40);
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Simulator::Schedule (Seconds (3.0), &IdealRateManagerChannelWidthTest::SendPacket, this, apDevice.Get (0), staDevice.Get (0)->GetAddress ());
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//Selected rate should be VHT-MCS 1 since SNR should be 3 dB lower than previously
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Simulator::Schedule (Seconds (3.1), &IdealRateManagerChannelWidthTest::CheckLastSelectedMode, this, WifiPhy::GetVhtMcs1 ());
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Simulator::Stop (Seconds (3.2));
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Simulator::Run ();
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Simulator::Destroy ();
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}
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/**
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* \ingroup wifi-test
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* \ingroup tests
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@@ -2509,6 +2669,7 @@ WifiTestSuite::WifiTestSuite ()
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AddTestCase (new Bug2470TestCase, TestCase::QUICK); //Bug 2470
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AddTestCase (new Issue40TestCase, TestCase::QUICK); //Issue #40
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AddTestCase (new Issue169TestCase, TestCase::QUICK); //Issue #169
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AddTestCase (new IdealRateManagerChannelWidthTest, TestCase::QUICK);
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}
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static WifiTestSuite g_wifiTestSuite; ///< the test suite
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