概要

　ns3を用いて、Wi-Fiのスループットを測定したいのですがコンパイルをするとエラーが起きてしまいます。どのように修正すればいいのかを教えていただきたいです。 __UdpClientHelper__のところでエラーが起きてるのかなというのは予想しているのですが、なぜエラー原因と解決策がわからないです。

##　エラー文

<nr>hogehoge:ns-3-dev$ ./waf --run 'scratch/teratail'
Waf: Entering directory `/Users/hogehoge/Desktop/ns-allinone-3.30.1/ns-3-dev/build'
[2800/2849] Compiling scratch/teratail.cc
[2809/2849] Linking build/scratch/teratail
Waf: Leaving directory `/Users/hogehoge/Desktop/ns-allinone-3.30.1/ns-3-dev/build'
Build commands will be stored in build/compile_commands.json
'build' finished successfully (3.256s)
assert failed. cond="duration.IsPositive ()", msg="Please provide test case to maintainers if this assert is hit.", file=../src/wifi/model/mac-low.cc, line=2146
libc++abi.dylib: terminating
Command ['/Users/hogehoge/Desktop/ns-allinone-3.30.1/ns-3-dev/build/scratch/teratail'] terminated with signal SIGIOT. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb --args %s <args>").

##　ネットワークトポロジー図

プログラム説明

　50m×50mのエリアに10個の端末をランダムで配置し、中央にAPを設置する。APはRemoteHostと接続されており、端末はRemoteHostと通信を行う。その際のスループットを表示する。

プログラムコード

C++
1#include "ns3/core-module.h"
2#include "ns3/point-to-point-module.h"
3#include "ns3/command-line.h"
4#include "ns3/config.h"
5#include "ns3/uinteger.h"
6#include "ns3/boolean.h"
7#include "ns3/double.h"
8#include "ns3/string.h"
9#include "ns3/yans-wifi-helper.h"
10#include "ns3/ssid.h"
11#include "ns3/mobility-helper.h"
12#include "ns3/mobility-module.h"
13#include "ns3/internet-stack-helper.h"
14#include "ns3/ipv4-address-helper.h"
15#include "ns3/udp-client-server-helper.h"
16#include "ns3/packet-sink-helper.h"
17#include "ns3/on-off-helper.h"
18#include "ns3/ipv4-global-routing-helper.h"
19#include "ns3/packet-sink.h"
20#include "ns3/yans-wifi-channel.h"
21#include <array>
22
23using namespace ns3;
24
25int main (int argc, char *argv[])
26{
27    uint32_t nStaNodes = 10;
28    double simulationTime = 5;
29
30    CommandLine cmd;
31    cmd.AddValue ("nStaNodes", "Number of \"extra\" Station nodes/devices", nStaNodes);
32    cmd.AddValue ("simulationTime", "Simulation time per step (in seconds)", simulationTime);
33
34    cmd.Parse (argc,argv);
35
36    std::string phyRate = "HtMcs15";                    /* Physical layer bitrate. */
37
38    uint32_t payloadSize = 1472; //bytes
39
40    NodeContainer p2pNodes;
41    p2pNodes.Create (2);
42
43    NodeContainer remoteNode;
44    remoteNode.Add (p2pNodes.Get (1));
45
46    PointToPointHelper pointToPoint;
47    pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("130Mbps"));
48    pointToPoint.SetChannelAttribute ("Delay", StringValue ("1ms"));
49
50    NetDeviceContainer p2pDevices;
51    p2pDevices = pointToPoint.Install (p2pNodes);
52
53    NodeContainer wifiStaNodes;
54    wifiStaNodes.Create (nStaNodes);
55    NodeContainer wifiApNode = p2pNodes.Get (0);
56
57    YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();
58    YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
59    phy.SetChannel (channel.Create ());
60
61    WifiHelper wifi;
62    wifi.SetStandard (WIFI_PHY_STANDARD_80211n_2_4GHZ);
63    Config::SetDefault ("ns3::LogDistancePropagationLossModel::ReferenceLoss", DoubleValue (40.046));
64
65    StringValue ctrlRate;
66    ctrlRate = StringValue ("ErpOfdmRate24Mbps");
67
68    wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
69                                "DataMode", StringValue (phyRate),
70                                "ControlMode", ctrlRate);
71
72    WifiMacHelper mac;
73    Ssid ssid = Ssid ("ns3-80211n");
74    mac.SetType ("ns3::StaWifiMac",
75                "Ssid", SsidValue (ssid));
76    NetDeviceContainer staDevices;
77    staDevices = wifi.Install (phy, mac, wifiStaNodes);
78    mac.SetType ("ns3::ApWifiMac",
79                "Ssid", SsidValue (ssid));
80    NetDeviceContainer apDevice;
81    apDevice = wifi.Install (phy, mac, wifiApNode);
82
83    // mobility.
84    MobilityHelper mobility;
85    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
86    positionAlloc->Add (Vector (25.0, 25.0, 0.0));
87    double xPositionArray[nStaNodes];
88    double yPositionArray[nStaNodes];
89    for (uint32_t nodeCount = 0; nodeCount < nStaNodes; nodeCount++) //distance
90    {
91        xPositionArray[nodeCount] = rand() % 50;
92        yPositionArray[nodeCount] = rand() % 50;
93        positionAlloc->Add (Vector (xPositionArray[nodeCount], yPositionArray[nodeCount], 0.0));
94    }
95
96    mobility.SetPositionAllocator (positionAlloc);   
97    mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
98    mobility.Install (wifiApNode);
99    mobility.Install (wifiStaNodes);
100
101    /* Internet stack*/
102    InternetStackHelper stack;
103    stack.Install (remoteNode);
104    stack.Install (wifiApNode);
105    stack.Install (wifiStaNodes);
106
107    Ipv4AddressHelper address;
108
109    address.SetBase ("10.1.1.0", "255.255.255.0");
110    Ipv4InterfaceContainer p2pInterfaces;
111    p2pInterfaces = address.Assign (p2pDevices);
112
113    address.SetBase ("10.1.2.0", "255.255.255.0");
114    Ipv4InterfaceContainer staNodesInterface;
115    Ipv4InterfaceContainer apNodeInterface;
116    staNodesInterface = address.Assign (staDevices);
117    apNodeInterface = address.Assign (apDevice);
118
119    ApplicationContainer serverApp;
120    //UDP flow
121    uint16_t port = 9;
122    UdpServerHelper server (port);
123    serverApp = server.Install (wifiStaNodes);
124    serverApp.Start (Seconds (0.0));
125    serverApp.Stop (Seconds (simulationTime + 1));
126
127    ApplicationContainer clientApp;
128
129    for (int i = 0; i < nStaNodes; i++) {
130        UdpClientHelper client (staNodesInterface.GetAddress (i), port);
131        client.SetAttribute ("MaxPackets", UintegerValue (4294967295u));
132        client.SetAttribute ("Interval", TimeValue (Time ("0.00001"))); //packets/s
133        client.SetAttribute ("PacketSize", UintegerValue (payloadSize));
134
135        if (i == 0) {
136            clientApp = client.Install (wifiApNode.Get (0));
137        }
138        else {
139            clientApp.Add(client.Install (wifiApNode.Get (0)));
140        }
141    }
142
143    clientApp.Start (Seconds (1.0));
144    clientApp.Stop (Seconds (simulationTime + 1));
145
146    Ipv4GlobalRoutingHelper::PopulateRoutingTables ();   
147    Simulator::Stop (Seconds (simulationTime + 1));
148
149    Simulator::Run ();
150    double throughput = 0;
151    //UDP
152    uint64_t totalPacketsThrough = DynamicCast<UdpServer> (serverApp.Get (0))->GetReceived ();
153    throughput = totalPacketsThrough * payloadSize * 8 / (simulationTime * 1000000.0); //Mbit/s
154    std::cout << throughput << " Mbit/s" << std::endl;
155    Simulator::Destroy ();
156
157    return 0;
158}