下面是具体代码/* fanet-simplified-olsr.cc */ #include "ns3/core-module.h" #include "ns3/network-module.h" #include "ns3/internet-module.h" #include "ns3/mobility-module.h" #include "ns3/wifi-module.h" #include "ns3/olsr-helper.h" #include "ns3/udp-echo-helper.h" #include "ns3/flow-monitor-module.h" // 新增流量监控头文件 using namespace ns3; int main(int argc, char *argv[]) { // ==================== 仿真基础配置 ==================== Time::SetResolution(Time::NS); LogComponentEnable("UdpEchoClientApplication", LOG_LEVEL_INFO); LogComponentEnable("UdpEchoServerApplication", LOG_LEVEL_INFO); // ==================== 1. 节点创建 ==================== NodeContainer nodes; nodes.Create(5); // ==================== 2. 移动模型配置 ==================== MobilityHelper mobility; mobility.SetPositionAllocator( "ns3::RandomRectanglePositionAllocator", "X", StringValue("ns3::UniformRandomVariable[Min=0.0|Max=1000.0]"), "Y", StringValue("ns3::UniformRandomVariable[Min=0.0|Max=1000.0]")); mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel"); mobility.Install(nodes); // ==================== 3. 无线网络配置 ==================== YansWifiChannelHelper channel = YansWifiChannelHelper::Default(); YansWifiPhyHelper phy; phy.SetChannel(channel.Create()); WifiMacHelper mac; mac.SetType("ns3::AdhocWifiMac"); WifiHelper wifi; NetDeviceContainer devices = wifi.Install(phy, mac, nodes); // ==================== 4. 网络协议栈 ==================== InternetStackHelper internet; OlsrHelper olsr; internet.SetRoutingHelper(olsr); internet.Install(nodes); // ==================== 5. IP地址分配 ==================== Ipv4AddressHelper address; address.SetBase("10.1.1.0", "255.255.255.0"); Ipv4InterfaceContainer interfaces = address.Assign(devices); // ==================== 6. 应用层配置 ==================== // 服务器配置（节点0） UdpEchoServerHelper echoServer(9); ApplicationContainer serverApps = echoServer.Install(nodes.Get(0)); serverApps.Start(Seconds(1.0)); serverApps.Stop(Seconds(10.0)); // 客户端配置（节点4） UdpEchoClientHelper echoClient(interfaces.GetAddress(0), 9); echoClient.SetAttribute("MaxPackets", UintegerValue(5)); echoClient.SetAttribute("Interval", TimeValue(Seconds(1.0))); echoClient.SetAttribute("PacketSize", UintegerValue(1024)); ApplicationContainer clientApps = echoClient.Install(nodes.Get(4)); clientApps.Start(Seconds(2.0)); clientApps.Stop(Seconds(9.0)); // ==================== 7. 流量监控配置 ==================== FlowMonitorHelper flowMonitor; Ptr<FlowMonitor> monitor = flowMonitor.InstallAll(); // ==================== 8. 仿真执行 ==================== Simulator::Stop(Seconds(10.0)); Simulator::Run(); // ==================== 9. 统计结果输出 ==================== monitor->CheckForLostPackets(); FlowMonitor::FlowStatsContainer stats = monitor->GetFlowStats(); for (auto const& iter : stats) { FlowId flowId = iter.first; FlowMonitor::FlowStats const& stats = iter.second; // 计算投递率(PDR) double pdr = (stats.rxPackets * 100.0) / stats.txPackets; // 计算平均延迟（转换为毫秒） double avgDelay = 0.0; if (stats.rxPackets > 0) { avgDelay = (stats.delaySum.GetSeconds() / stats.rxPackets) * 1000; } // 输出统计结果 std::cout << "\n===== 流量统计（Flow ID: " << flowId << "）=====\n"; std::cout << "发送数据包: " << stats.txPackets << "\n"; std::cout << "接收数据包: " << stats.rxPackets << "\n"; std::cout << "丢包率: " << stats.lostPackets << "\n"; std::cout << "数据包投递率(PDR): " << pdr << "%\n"; std::cout << "平均延迟: " << avgDelay << " 毫秒\n"; } Simulator::Destroy(); return 0; }