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examples: Also allow to select channel width and guard interval duration in wifi network examples

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This commit is contained in:
Sébastien Deronne
2024-03-08 07:50:34 +01:00
committed by Stefano Avallone
parent 2066cabb80
commit 054be933b8
4 changed files with 138 additions and 49 deletions
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43
examples/wireless/wifi-ht-network.cc
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@@ -64,6 +64,8 @@ main(int argc, char* argv[])
double frequency{5}; // whether 2.4 or 5 GHz
std::string mcsStr;
std::vector<uint64_t> mcsValues;
int channelWidth{-1}; // in MHz, -1 indicates an unset value
int guardInterval{-1}; // in nanoseconds, -1 indicates an unset value
double minExpectedThroughput{0.0};
double maxExpectedThroughput{0.0};
@@ -81,6 +83,14 @@ main(int argc, char* argv[])
"mcs",
"list of comma separated MCS values to test; if unset, all MCS values (0-7) are tested",
mcsStr);
cmd.AddValue(
"channelWidth",
"if set, limit testing to a specific channel width expressed in MHz (20 or 40 MHz)",
channelWidth);
cmd.AddValue("guardInterval",
"if set, limit testing to a specific guard interval duration expressed in "
"nanoseconds (800 or 400 ns)",
guardInterval);
cmd.AddValue("minExpectedThroughput",
"if set, simulation fails if the lowest throughput is below this value",
minExpectedThroughput);
@@ -123,14 +133,30 @@ main(int argc, char* argv[])
std::sort(mcsValues.begin(), mcsValues.end());
}
int minChannelWidth = 20;
int maxChannelWidth = 40;
if (channelWidth >= minChannelWidth && channelWidth <= maxChannelWidth)
{
minChannelWidth = channelWidth;
maxChannelWidth = channelWidth;
}
int minGi = 400;
int maxGi = 800;
if (guardInterval >= minGi && guardInterval <= maxGi)
{
minGi = guardInterval;
maxGi = guardInterval;
}
for (const auto mcs : mcsValues)
{
uint8_t index = 0;
double previous = 0;
for (int channelWidth = 20; channelWidth <= 40;)
for (int width = minChannelWidth; width <= maxChannelWidth; width *= 2) // MHz
{
for (auto sgi : {false, true})
for (int gi = maxGi; gi >= minGi; gi /= 2) // Nanoseconds
{
const auto sgi = (gi == 400);
uint32_t payloadSize; // 1500 byte IP packet
if (udp)
{
@@ -191,7 +217,7 @@ main(int argc, char* argv[])
';'>
channelValue;
WifiPhyBand band = (frequency == 5.0 ? WIFI_PHY_BAND_5GHZ : WIFI_PHY_BAND_2_4GHZ);
channelValue.Set(WifiPhy::ChannelSegments{{0, channelWidth, band, 0}});
channelValue.Set(WifiPhy::ChannelSegments{{0, width, band, 0}});
mac.SetType("ns3::StaWifiMac", "Ssid", SsidValue(ssid));
phy.Set("ChannelSettings", channelValue);
@@ -242,7 +268,7 @@ main(int argc, char* argv[])
/* Setting applications */
const auto maxLoad =
HtPhy::GetDataRate(mcs, channelWidth, NanoSeconds(sgi ? 400 : 800), 1);
HtPhy::GetDataRate(mcs, width, NanoSeconds(sgi ? 400 : 800), 1);
ApplicationContainer serverApp;
if (udp)
{
@@ -314,11 +340,11 @@ main(int argc, char* argv[])
Simulator::Destroy();
std::cout << mcs << "\t\t\t" << channelWidth << " MHz\t\t\t" << std::boolalpha
<< sgi << "\t\t\t" << throughput << " Mbit/s" << std::endl;
std::cout << mcs << "\t\t\t" << width << " MHz\t\t\t" << std::boolalpha << sgi
<< "\t\t\t" << throughput << " Mbit/s" << std::endl;
// test first element
if (mcs == minMcs && channelWidth == 20 && !sgi)
if (mcs == minMcs && width == 20 && !sgi)
{
if (throughput < minExpectedThroughput)
{
@@ -326,7 +352,7 @@ main(int argc, char* argv[])
}
}
// test last element
if (mcs == maxMcs && channelWidth == 40 && sgi)
if (mcs == maxMcs && width == 40 && sgi)
{
if (maxExpectedThroughput > 0 && throughput > maxExpectedThroughput)
{
@@ -353,7 +379,6 @@ main(int argc, char* argv[])
}
index++;
}
channelWidth *= 2;
}
}
return 0;