|
A Discrete-Event Network Simulator
|
API
|
Go to the documentation of this file.
22 #include "ns3/command-line.h"
23 #include "ns3/config.h"
24 #include "ns3/uinteger.h"
25 #include "ns3/boolean.h"
26 #include "ns3/double.h"
27 #include "ns3/string.h"
29 #include "ns3/yans-wifi-helper.h"
31 #include "ns3/mobility-helper.h"
32 #include "ns3/internet-stack-helper.h"
33 #include "ns3/ipv4-address-helper.h"
34 #include "ns3/udp-client-server-helper.h"
35 #include "ns3/packet-sink-helper.h"
36 #include "ns3/on-off-helper.h"
37 #include "ns3/ipv4-global-routing-helper.h"
38 #include "ns3/packet-sink.h"
39 #include "ns3/yans-wifi-channel.h"
61 int main (
int argc,
char *argv[])
65 double simulationTime = 10;
66 double distance = 1.0;
67 double frequency = 5.0;
69 double minExpectedThroughput = 0;
70 double maxExpectedThroughput = 0;
73 cmd.AddValue (
"frequency",
"Whether working in the 2.4 or 5.0 GHz band (other values gets rejected)", frequency);
74 cmd.AddValue (
"distance",
"Distance in meters between the station and the access point", distance);
75 cmd.AddValue (
"simulationTime",
"Simulation time in seconds", simulationTime);
76 cmd.AddValue (
"udp",
"UDP if set to 1, TCP otherwise", udp);
77 cmd.AddValue (
"useRts",
"Enable/disable RTS/CTS", useRts);
78 cmd.AddValue (
"mcs",
"if set, limit testing to a specific MCS (0-7)", mcs);
79 cmd.AddValue (
"minExpectedThroughput",
"if set, simulation fails if the lowest throughput is below this value", minExpectedThroughput);
80 cmd.AddValue (
"maxExpectedThroughput",
"if set, simulation fails if the highest throughput is above this value", maxExpectedThroughput);
81 cmd.Parse (argc,argv);
88 double prevThroughput [8];
89 for (uint32_t l = 0; l < 8; l++)
91 prevThroughput[l] = 0;
93 std::cout <<
"MCS value" <<
"\t\t" <<
"Channel width" <<
"\t\t" <<
"short GI" <<
"\t\t" <<
"Throughput" <<
'\n';
96 if (mcs >= 0 && mcs <= 7)
101 for (
int mcs = minMcs; mcs <= maxMcs; mcs++)
105 for (
int channelWidth = 20; channelWidth <= 40; )
107 for (
int sgi = 0; sgi < 2; sgi++)
109 uint32_t payloadSize;
131 if (frequency == 5.0)
135 else if (frequency == 2.4)
142 std::cout <<
"Wrong frequency value!" << std::endl;
146 std::ostringstream oss;
147 oss <<
"HtMcs" << mcs;
148 wifi.SetRemoteStationManager (
"ns3::ConstantRateWifiManager",
"DataMode",
StringValue (oss.str ()),
153 mac.SetType (
"ns3::StaWifiMac",
158 staDevice =
wifi.Install (
phy,
mac, wifiStaNode);
160 mac.SetType (
"ns3::ApWifiMac",
169 Config::Set (
"/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/HtConfiguration/ShortGuardIntervalSupported",
BooleanValue (sgi));
175 positionAlloc->
Add (Vector (0.0, 0.0, 0.0));
176 positionAlloc->
Add (Vector (distance, 0.0, 0.0));
177 mobility.SetPositionAllocator (positionAlloc);
179 mobility.SetMobilityModel (
"ns3::ConstantPositionMobilityModel");
187 stack.Install (wifiStaNode);
190 address.SetBase (
"192.168.1.0",
"255.255.255.0");
194 staNodeInterface =
address.Assign (staDevice);
195 apNodeInterface =
address.Assign (apDevice);
204 serverApp = server.Install (wifiStaNode.
Get (0));
209 client.SetAttribute (
"MaxPackets",
UintegerValue (4294967295u));
210 client.SetAttribute (
"Interval",
TimeValue (
Time (
"0.00001")));
211 client.SetAttribute (
"PacketSize",
UintegerValue (payloadSize));
219 uint16_t
port = 50000;
222 serverApp = packetSinkHelper.Install (wifiStaNode.
Get (0));
227 onoff.SetAttribute (
"OnTime",
StringValue (
"ns3::ConstantRandomVariable[Constant=1]"));
228 onoff.SetAttribute (
"OffTime",
StringValue (
"ns3::ConstantRandomVariable[Constant=0]"));
229 onoff.SetAttribute (
"PacketSize",
UintegerValue (payloadSize));
232 onoff.SetAttribute (
"Remote", remoteAddress);
243 uint64_t rxBytes = 0;
246 rxBytes = payloadSize * DynamicCast<UdpServer> (serverApp.
Get (0))->GetReceived ();
250 rxBytes = DynamicCast<PacketSink> (serverApp.
Get (0))->GetTotalRx ();
252 double throughput = (rxBytes * 8) / (simulationTime * 1000000.0);
256 std::cout << mcs <<
"\t\t\t" << channelWidth <<
" MHz\t\t\t" << sgi <<
"\t\t\t" << throughput <<
" Mbit/s" << std::endl;
259 if (mcs == 0 && channelWidth == 20 && sgi == 0)
261 if (throughput < minExpectedThroughput)
263 NS_FATAL_ERROR (
"Obtained throughput " << throughput <<
" is not expected!");
267 if (mcs == 7 && channelWidth == 40 && sgi == 1)
269 if (maxExpectedThroughput > 0 && throughput > maxExpectedThroughput)
271 NS_FATAL_ERROR (
"Obtained throughput " << throughput <<
" is not expected!");
275 if (throughput > previous)
277 previous = throughput;
281 NS_FATAL_ERROR (
"Obtained throughput " << throughput <<
" is not expected!");
284 if (throughput > prevThroughput [index])
286 prevThroughput [index] = throughput;
290 NS_FATAL_ERROR (
"Obtained throughput " << throughput <<
" is not expected!");
holds a vector of ns3::NetDevice pointers
@ WIFI_STANDARD_80211n_5GHZ
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
AttributeValue implementation for DataRate.
Ptr< Application > Get(uint32_t i) const
Get the Ptr<Application> stored in this container at a given index.
static YansWifiChannelHelper Default(void)
Create a channel helper in a default working state.
Create a client application which sends UDP packets carrying a 32bit sequence number and a 64 bit tim...
Make it easy to create and manage PHY objects for the YANS model.
Parse command-line arguments.
void Add(Vector v)
Add a position to the list of positions.
void Set(std::string path, const AttributeValue &value)
AttributeValue implementation for Boolean.
Every class exported by the ns3 library is enclosed in the ns3 namespace.
void Stop(Time stop)
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter.
helps to create WifiNetDevice objects
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
AttributeValue implementation for Address.
This class can be used to hold variables of floating point type such as 'double' or 'float'.
void Create(uint32_t n)
Create n nodes and append pointers to them to the end of this NodeContainer.
AttributeValue implementation for Ssid.
The IEEE 802.11 SSID Information Element.
Create a server application which waits for input UDP packets and uses the information carried into t...
Smart pointer class similar to boost::intrusive_ptr.
#define NS_FATAL_ERROR(msg)
Report a fatal error with a message and terminate.
static void PopulateRoutingTables(void)
Build a routing database and initialize the routing tables of the nodes in the simulation.
static void Stop(void)
Tell the Simulator the calling event should be the last one executed.
a polymophic address class
A helper to make it easier to instantiate an ns3::OnOffApplication on a set of nodes.
holds a vector of std::pair of Ptr<Ipv4> and interface index.
Ptr< Node > Get(uint32_t i) const
Get the Ptr<Node> stored in this container at a given index.
Simulation virtual time values and global simulation resolution.
static void Run(void)
Run the simulation.
Hold variables of type string.
A helper to make it easier to instantiate an ns3::PacketSinkApplication on a set of nodes.
static Ipv4Address GetAny(void)
void Start(Time start)
Arrange for all of the Applications in this container to Start() at the Time given as a parameter.
Time Seconds(double value)
Construct a Time in the indicated unit.
static void Destroy(void)
Execute the events scheduled with ScheduleDestroy().
holds a vector of ns3::Application pointers.
AttributeValue implementation for Time.
keep track of a set of node pointers.
Ipv4Address GetAddress(uint32_t i, uint32_t j=0) const
Hold an unsigned integer type.
manage and create wifi channel objects for the YANS model.
create MAC layers for a ns3::WifiNetDevice.
void SetDefault(std::string name, const AttributeValue &value)
@ WIFI_STANDARD_80211n_2_4GHZ
aggregate IP/TCP/UDP functionality to existing Nodes.
Helper class used to assign positions and mobility models to nodes.