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wifi: Extend TXOP test to check access parameters advertised by APs

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This commit is contained in:
Stefano Avallone
2024-04-30 18:16:00 +02:00
parent 4a4477a0be
commit 39c9de998d
1 changed files with 83 additions and 48 deletions
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131
src/wifi/test/wifi-txop-test.cc
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@@ -124,9 +124,11 @@ class WifiTxopTest : public TestCase
NetDeviceContainer m_staDevices; ///< container for stations' NetDevices
NetDeviceContainer m_apDevices; ///< container for AP's NetDevice
std::vector<FrameInfo> m_txPsdus; ///< transmitted PSDUs
Time m_txopLimit; ///< TXOP limit
uint8_t m_aifsn; ///< AIFSN for BE
uint32_t m_cwMin; ///< CWmin for BE
Time m_apTxopLimit; ///< TXOP limit for AP (AC BE)
uint8_t m_staAifsn; ///< AIFSN for STAs (AC BE)
uint32_t m_staCwMin; ///< CWmin for STAs (AC BE)
uint32_t m_staCwMax; ///< CWmax for STAs (AC BE)
Time m_staTxopLimit; ///< TXOP limit for STAs (AC BE)
uint16_t m_received; ///< number of packets received by the stations
bool m_nonHt; ///< whether to use 802.11a or 802.11ax
std::size_t m_payloadSizeRtsOn; ///< size in bytes of packets protected by RTS
@@ -145,7 +147,11 @@ class WifiTxopTest : public TestCase
WifiTxopTest::WifiTxopTest(const Params& params)
: TestCase("Check correct operation within TXOPs"),
m_nStations(3),
m_txopLimit(MicroSeconds(4768)),
m_apTxopLimit(MicroSeconds(4768)),
m_staAifsn(4),
m_staCwMin(63),
m_staCwMax(511),
m_staTxopLimit(MicroSeconds(3232)),
m_received(0),
m_nonHt(params.nonHt),
m_payloadSizeRtsOn(m_nonHt ? 2000 : 540),
@@ -285,15 +291,27 @@ WifiTxopTest::DoRun()
m_staDevices = wifi.Install(phy, mac, wifiStaNodes);
mac.SetType("ns3::ApWifiMac",
"QosSupported",
BooleanValue(true),
"Ssid",
SsidValue(Ssid("wifi-txop-ssid")),
"BeaconInterval",
TimeValue(MicroSeconds(102400)),
"EnableBeaconJitter",
BooleanValue(false));
mac.SetType(
"ns3::ApWifiMac",
"QosSupported",
BooleanValue(true),
"Ssid",
SsidValue(Ssid("wifi-txop-ssid")),
"BeaconInterval",
TimeValue(MicroSeconds(102400)),
"EnableBeaconJitter",
BooleanValue(false),
"AifsnsForSta",
StringValue(std::string("BE ") + std::to_string(m_staAifsn)),
"CwMinsForSta",
ApWifiMac::UintAccessParamsMapValue(
ApWifiMac::UintAccessParamsMap{{AC_BE, std::vector<uint64_t>{m_staCwMin}}}),
"CwMaxsForSta",
StringValue(std::string("BE ") + std::to_string(m_staCwMax)),
"TxopLimitsForSta",
StringValue(std::string("BE ") + std::to_string(m_staTxopLimit.GetMicroSeconds()) + "us"));
mac.SetEdca(AC_BE, "TxopLimits", AttributeContainerValue<TimeValue>(std::list{m_apTxopLimit}));
m_apDevices = wifi.Install(phy, mac, wifiApNode);
@@ -328,14 +346,6 @@ WifiTxopTest::DoRun()
mobility.Install(wifiApNode);
mobility.Install(wifiStaNodes);
// set the TXOP limit on BE AC
dev = DynamicCast<WifiNetDevice>(m_apDevices.Get(0));
PointerValue ptr;
dev->GetMac()->GetAttribute("BE_Txop", ptr);
ptr.Get<QosTxop>()->SetTxopLimit(m_txopLimit);
m_aifsn = ptr.Get<QosTxop>()->Txop::GetAifsn();
m_cwMin = ptr.Get<QosTxop>()->Txop::GetMinCw();
PacketSocketHelper packetSocket;
packetSocket.Install(wifiApNode);
packetSocket.Install(wifiStaNodes);
@@ -451,7 +461,32 @@ WifiTxopTest::DoRun()
void
WifiTxopTest::CheckResults()
{
// check that STAs used the access parameters advertised by the AP
for (uint32_t i = 0; i < m_staDevices.GetN(); ++i)
{
auto staEdca = DynamicCast<WifiNetDevice>(m_staDevices.Get(i))->GetMac()->GetQosTxop(AC_BE);
NS_TEST_EXPECT_MSG_EQ(staEdca->GetAifsn(SINGLE_LINK_OP_ID),
m_staAifsn,
"Unexpected AIFSN for STA " << i);
NS_TEST_EXPECT_MSG_EQ(staEdca->GetMinCw(SINGLE_LINK_OP_ID),
m_staCwMin,
"Unexpected CWmin for STA " << i);
NS_TEST_EXPECT_MSG_EQ(staEdca->GetMaxCw(SINGLE_LINK_OP_ID),
m_staCwMax,
"Unexpected CWmax for STA " << i);
NS_TEST_EXPECT_MSG_EQ(staEdca->GetTxopLimit(SINGLE_LINK_OP_ID),
m_staTxopLimit,
"Unexpected TXOP limit for STA " << i);
}
const auto apDev = DynamicCast<WifiNetDevice>(m_apDevices.Get(0));
NS_TEST_EXPECT_MSG_EQ(apDev->GetMac()->GetQosTxop(AC_BE)->GetTxopLimit(SINGLE_LINK_OP_ID),
m_apTxopLimit,
"Unexpected TXOP limit for AP");
const auto aifsn = apDev->GetMac()->GetQosTxop(AC_BE)->GetAifsn(SINGLE_LINK_OP_ID);
const auto cwMin = apDev->GetMac()->GetQosTxop(AC_BE)->GetMinCw(SINGLE_LINK_OP_ID);
Time tEnd; // TX end for a frame
Time tStart; // TX start for the next frame
Time txopStart; // TXOP start time
@@ -518,7 +553,7 @@ WifiTxopTest::CheckResults()
"PSDU duration expected not to exceed duration based RTS/CTS threshold");
}
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[0].header.GetDuration(),
RoundDurationId(m_txopLimit - m_txPsdus[0].txDuration),
RoundDurationId(m_apTxopLimit - m_txPsdus[0].txDuration),
"Duration/ID of the first frame must cover the whole TXOP");
// a Normal Ack is sent by STA1
@@ -551,11 +586,11 @@ WifiTxopTest::CheckResults()
NS_TEST_EXPECT_MSG_GT_OR_EQ(
tStart - tEnd,
eifsNoDifs + sifs + m_aifsn * slot,
eifsNoDifs + sifs + aifsn * slot,
"Less than AIFS elapsed between AckTimeout and the next TXOP start");
NS_TEST_EXPECT_MSG_LT_OR_EQ(
tStart - tEnd,
eifsNoDifs + sifs + m_aifsn * slot + (2 * (m_cwMin + 1) - 1) * slot,
eifsNoDifs + sifs + aifsn * slot + (2 * (cwMin + 1) - 1) * slot,
"More than AIFS+BO elapsed between AckTimeout and the next TXOP start");
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[2].header.IsQosData(),
true,
@@ -577,7 +612,7 @@ WifiTxopTest::CheckResults()
"PSDU duration expected not to exceed duration based RTS/CTS threshold");
}
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[2].header.GetDuration(),
RoundDurationId(m_txopLimit - m_txPsdus[2].txDuration),
RoundDurationId(m_apTxopLimit - m_txPsdus[2].txDuration),
"Duration/ID of the retransmitted frame must cover the whole TXOP");
// a Normal Ack is then sent by STA1
@@ -620,10 +655,10 @@ WifiTxopTest::CheckResults()
rtsCtsTxDurationThresh,
"PSDU duration expected not to exceed duration based RTS/CTS threshold");
}
NS_TEST_EXPECT_MSG_EQ(
m_txPsdus[4].header.GetDuration(),
RoundDurationId(m_txopLimit - (m_txPsdus[4].txStart - txopStart) - m_txPsdus[4].txDuration),
"Duration/ID of the second frame does not cover the remaining TXOP");
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[4].header.GetDuration(),
RoundDurationId(m_apTxopLimit - (m_txPsdus[4].txStart - txopStart) -
m_txPsdus[4].txDuration),
"Duration/ID of the second frame does not cover the remaining TXOP");
// STA2 receives a corrupted frame and hence it does not send the Ack. When the AckTimeout
// expires, the AP performs PIFS recovery or invoke backoff, without terminating the TXOP,
@@ -645,11 +680,11 @@ WifiTxopTest::CheckResults()
{
NS_TEST_EXPECT_MSG_GT_OR_EQ(
tStart - tEnd,
sifs + m_aifsn * slot,
sifs + aifsn * slot,
"Less than AIFS elapsed between AckTimeout and the next transmission");
NS_TEST_EXPECT_MSG_LT_OR_EQ(
tStart - tEnd,
sifs + m_aifsn * slot + (2 * (m_cwMin + 1) - 1) * slot,
sifs + aifsn * slot + (2 * (cwMin + 1) - 1) * slot,
"More than AIFS+BO elapsed between AckTimeout and the next TXOP start");
}
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[5].header.IsQosData(), true, "Expected a QoS data frame");
@@ -669,10 +704,10 @@ WifiTxopTest::CheckResults()
rtsCtsTxDurationThresh,
"PSDU duration expected not to exceed duration based RTS/CTS threshold");
}
NS_TEST_EXPECT_MSG_EQ(
m_txPsdus[5].header.GetDuration(),
RoundDurationId(m_txopLimit - (m_txPsdus[5].txStart - txopStart) - m_txPsdus[5].txDuration),
"Duration/ID of the second frame does not cover the remaining TXOP");
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[5].header.GetDuration(),
RoundDurationId(m_apTxopLimit - (m_txPsdus[5].txStart - txopStart) -
m_txPsdus[5].txDuration),
"Duration/ID of the second frame does not cover the remaining TXOP");
// a Normal Ack is then sent by STA2
tEnd = m_txPsdus[5].txStart + m_txPsdus[5].txDuration;
@@ -716,10 +751,10 @@ WifiTxopTest::CheckResults()
rtsCtsTxDurationThresh,
"PSDU duration expected not to exceed duration based RTS/CTS threshold");
}
NS_TEST_EXPECT_MSG_EQ(
m_txPsdus[7].header.GetDuration(),
RoundDurationId(m_txopLimit - (m_txPsdus[7].txStart - txopStart) - m_txPsdus[7].txDuration),
"Duration/ID of the third frame does not cover the remaining TXOP");
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[7].header.GetDuration(),
RoundDurationId(m_apTxopLimit - (m_txPsdus[7].txStart - txopStart) -
m_txPsdus[7].txDuration),
"Duration/ID of the third frame does not cover the remaining TXOP");
// a Normal Ack is then sent by STA3
tEnd = m_txPsdus[7].txStart + m_txPsdus[7].txDuration;
@@ -754,10 +789,10 @@ WifiTxopTest::CheckResults()
tStart = m_txPsdus[10].txStart;
NS_TEST_EXPECT_MSG_GT_OR_EQ(tStart - tEnd,
sifs + m_aifsn * slot,
sifs + m_staAifsn * slot,
"Less than AIFS elapsed between two TXOPs");
NS_TEST_EXPECT_MSG_LT_OR_EQ(tStart - tEnd,
sifs + m_aifsn * slot + m_cwMin * slot + tolerance,
sifs + m_staAifsn * slot + m_staCwMin * slot + tolerance,
"More than AIFS+BO elapsed between two TXOPs");
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[10].header.IsQosData(), true, "Expected a QoS data frame");
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[10].header.GetAddr1(),
@@ -778,7 +813,7 @@ WifiTxopTest::CheckResults()
}
NS_TEST_EXPECT_MSG_EQ(
m_txPsdus[10].header.GetDuration(),
RoundDurationId(m_txopLimit - m_txPsdus[10].txDuration),
RoundDurationId(m_staTxopLimit - m_txPsdus[10].txDuration),
"Duration/ID of the frame sent by the first station does not cover the remaining TXOP");
// a Normal Ack is then sent by the AP
@@ -840,7 +875,7 @@ WifiTxopTest::CheckResults()
DynamicCast<WifiNetDevice>(m_staDevices.Get(0))->GetMac()->GetAddress(),
"Expected an RTS frame sent by the AP to the first station");
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[13].header.GetDuration(),
RoundDurationId(m_txopLimit - m_txPsdus[13].txDuration),
RoundDurationId(m_apTxopLimit - m_txPsdus[13].txDuration),
"Duration/ID of the first RTS frame must cover the whole TXOP");
// a CTS is sent by STA1
@@ -886,7 +921,7 @@ WifiTxopTest::CheckResults()
}
NS_TEST_EXPECT_MSG_EQ(
m_txPsdus[15].header.GetDuration(),
RoundDurationId(m_txopLimit - (m_txPsdus[15].txStart - txopStart) -
RoundDurationId(m_apTxopLimit - (m_txPsdus[15].txStart - txopStart) -
m_txPsdus[15].txDuration),
"Duration/ID of the first QoS data frame does not cover the remaining TXOP");
@@ -929,7 +964,7 @@ WifiTxopTest::CheckResults()
DynamicCast<WifiNetDevice>(m_staDevices.Get(1))->GetMac()->GetAddress(),
"Expected an RTS frame sent by the AP to the second station");
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[idx].header.GetDuration(),
RoundDurationId(m_txopLimit - (m_txPsdus[idx].txStart - txopStart) -
RoundDurationId(m_apTxopLimit - (m_txPsdus[idx].txStart - txopStart) -
m_txPsdus[idx].txDuration),
"Duration/ID of the second RTS frame must cover the whole TXOP");
@@ -981,7 +1016,7 @@ WifiTxopTest::CheckResults()
}
NS_TEST_EXPECT_MSG_EQ(
m_txPsdus[idx].header.GetDuration(),
RoundDurationId(m_txopLimit - (m_txPsdus[idx].txStart - txopStart) -
RoundDurationId(m_apTxopLimit - (m_txPsdus[idx].txStart - txopStart) -
m_txPsdus[idx].txDuration),
"Duration/ID of the second QoS data frame does not cover the remaining TXOP");
@@ -1023,7 +1058,7 @@ WifiTxopTest::CheckResults()
DynamicCast<WifiNetDevice>(m_staDevices.Get(2))->GetMac()->GetAddress(),
"Expected an RTS frame sent by the AP to the third station");
NS_TEST_EXPECT_MSG_EQ(m_txPsdus[idx].header.GetDuration(),
RoundDurationId(m_txopLimit - (m_txPsdus[idx].txStart - txopStart) -
RoundDurationId(m_apTxopLimit - (m_txPsdus[idx].txStart - txopStart) -
m_txPsdus[idx].txDuration),
"Duration/ID of the third RTS frame must cover the whole TXOP");
@@ -1074,7 +1109,7 @@ WifiTxopTest::CheckResults()
}
NS_TEST_EXPECT_MSG_EQ(
m_txPsdus[idx].header.GetDuration(),
RoundDurationId(m_txopLimit - (m_txPsdus[idx].txStart - txopStart) -
RoundDurationId(m_apTxopLimit - (m_txPsdus[idx].txStart - txopStart) -
m_txPsdus[idx].txDuration),
"Duration/ID of the third QoS data frame does not cover the remaining TXOP");