A Discrete-Event Network Simulator
API
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lena-simple-epc-emu.cc
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1/*
2 * Copyright (c) 2011, 2013 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
3 *
4 * SPDX-License-Identifier: GPL-2.0-only
5 *
6 * Author: Jaume Nin <jaume.nin@cttc.cat>
7 * Nicola Baldo <nbaldo@cttc.cat>
8 */
9
10#include "ns3/applications-module.h"
11#include "ns3/config-store.h"
12#include "ns3/core-module.h"
13#include "ns3/epc-helper.h"
14#include "ns3/internet-module.h"
15#include "ns3/ipv4-global-routing-helper.h"
16#include "ns3/lte-helper.h"
17#include "ns3/lte-module.h"
18#include "ns3/mobility-module.h"
19#include "ns3/network-module.h"
20#include "ns3/point-to-point-helper.h"
21
22using namespace ns3;
23
24/*
25 * Simple simulation program using the emulated EPC.
26 * For the LTE radio part, it simulates a simple linear topology with
27 * a fixed number of eNBs spaced at equal distance, and a fixed number
28 * of UEs per each eNB, located at the same position of the eNB.
29 * For the EPC, it uses EmuEpcHelper to realize the S1-U connection
30 * via a real link.
31 */
32
33NS_LOG_COMPONENT_DEFINE("EpcFirstExample");
34
35int
36main(int argc, char* argv[])
37{
38 uint16_t nEnbs = 1;
39 uint16_t nUesPerEnb = 1;
40 double simTime = 10.1;
41 double distance = 1000.0;
42 double interPacketInterval = 1000;
43
44 // Command line arguments
45 CommandLine cmd(__FILE__);
46 cmd.AddValue("nEnbs", "Number of eNBs", nEnbs);
47 cmd.AddValue("nUesPerEnb", "Number of UEs per eNB", nUesPerEnb);
48 cmd.AddValue("simTime", "Total duration of the simulation [s])", simTime);
49 cmd.AddValue("distance", "Distance between eNBs [m]", distance);
50 cmd.AddValue("interPacketInterval", "Inter packet interval [ms])", interPacketInterval);
51 cmd.Parse(argc, argv);
52
53 // let's go in real time
54 // NOTE: if you go in real time I strongly advise to use
55 // --ns3::RealtimeSimulatorImpl::SynchronizationMode=HardLimit
56 // I've seen that if BestEffort is used things can break
57 // (even simple stuff such as ARP)
58 // GlobalValue::Bind ("SimulatorImplementationType",
59 // StringValue ("ns3::RealtimeSimulatorImpl"));
60
61 // let's speed things up, we don't need these details for this scenario
62 Config::SetDefault("ns3::LteSpectrumPhy::CtrlErrorModelEnabled", BooleanValue(false));
63 Config::SetDefault("ns3::LteSpectrumPhy::DataErrorModelEnabled", BooleanValue(false));
64
65 GlobalValue::Bind("ChecksumEnabled", BooleanValue(true));
66
67 ConfigStore inputConfig;
68 inputConfig.ConfigureDefaults();
69
70 // parse again so you can override default values from the command line
71 cmd.Parse(argc, argv);
72
75 lteHelper->SetEpcHelper(epcHelper);
76 epcHelper->Initialize();
77
78 Ptr<Node> pgw = epcHelper->GetPgwNode();
79
80 // Create a single RemoteHost
81 NodeContainer remoteHostContainer;
82 remoteHostContainer.Create(1);
83 Ptr<Node> remoteHost = remoteHostContainer.Get(0);
85 internet.Install(remoteHostContainer);
86
87 // Create the Internet
89 p2ph.SetDeviceAttribute("DataRate", DataRateValue(DataRate("100Gb/s")));
90 p2ph.SetDeviceAttribute("Mtu", UintegerValue(1500));
91 p2ph.SetChannelAttribute("Delay", TimeValue(Seconds(0.010)));
92 NetDeviceContainer internetDevices = p2ph.Install(pgw, remoteHost);
94 ipv4h.SetBase("1.0.0.0", "255.0.0.0");
95 Ipv4InterfaceContainer internetIpIfaces = ipv4h.Assign(internetDevices);
96 // interface 0 is localhost, 1 is the p2p device
97 Ipv4Address remoteHostAddr = internetIpIfaces.GetAddress(1);
98
99 Ipv4StaticRoutingHelper ipv4RoutingHelper;
100 Ptr<Ipv4StaticRouting> remoteHostStaticRouting =
101 ipv4RoutingHelper.GetStaticRouting(remoteHost->GetObject<Ipv4>());
102 remoteHostStaticRouting->AddNetworkRouteTo(Ipv4Address("7.0.0.0"), Ipv4Mask("255.0.0.0"), 1);
103
104 NodeContainer ueNodes;
105 NodeContainer enbNodes;
106 enbNodes.Create(nEnbs);
107 ueNodes.Create(nEnbs * nUesPerEnb);
108
109 // Install Mobility Model
111 for (uint16_t i = 0; i < nEnbs; i++)
112 {
113 positionAlloc->Add(Vector(distance * i, 0, 0));
114 }
116 mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
117 mobility.SetPositionAllocator(positionAlloc);
118 mobility.Install(enbNodes);
119 mobility.Install(ueNodes);
120
121 // Install LTE Devices to the nodes
122 NetDeviceContainer enbLteDevs = lteHelper->InstallEnbDevice(enbNodes);
123 NetDeviceContainer ueLteDevs = lteHelper->InstallUeDevice(ueNodes);
124
125 // Install the IP stack on the UEs
126 internet.Install(ueNodes);
127 Ipv4InterfaceContainer ueIpIface;
128 ueIpIface = epcHelper->AssignUeIpv4Address(NetDeviceContainer(ueLteDevs));
129 // Assign IP address to UEs, and install applications
130 for (uint32_t u = 0; u < ueNodes.GetN(); ++u)
131 {
132 Ptr<Node> ueNode = ueNodes.Get(u);
133 // Set the default gateway for the UE
134 Ptr<Ipv4StaticRouting> ueStaticRouting =
135 ipv4RoutingHelper.GetStaticRouting(ueNode->GetObject<Ipv4>());
136 ueStaticRouting->SetDefaultRoute(epcHelper->GetUeDefaultGatewayAddress(), 1);
137 }
138
139 lteHelper->Attach(ueLteDevs);
140 // side effects: 1) use idle mode cell selection, 2) activate default EPS bearer
141
142 // randomize a bit start times to avoid simulation artifacts
143 // (e.g., buffer overflows due to packet transmissions happening
144 // exactly at the same time)
146 startTimeSeconds->SetAttribute("Min", DoubleValue(0));
147 startTimeSeconds->SetAttribute("Max", DoubleValue(interPacketInterval / 1000.0));
148
149 // Install and start applications on UEs and remote host
150 uint16_t dlPort = 1234;
151 uint16_t ulPort = 2000;
152 for (uint32_t u = 0; u < ueNodes.GetN(); ++u)
153 {
154 ++ulPort;
157
158 PacketSinkHelper dlPacketSinkHelper("ns3::UdpSocketFactory",
160 PacketSinkHelper ulPacketSinkHelper("ns3::UdpSocketFactory",
162 serverApps.Add(dlPacketSinkHelper.Install(ueNodes.Get(u)));
163 serverApps.Add(ulPacketSinkHelper.Install(remoteHost));
164
165 UdpClientHelper dlClient(ueIpIface.GetAddress(u), dlPort);
166 dlClient.SetAttribute("Interval", TimeValue(MilliSeconds(interPacketInterval)));
167 dlClient.SetAttribute("MaxPackets", UintegerValue(1000000));
168
169 UdpClientHelper ulClient(remoteHostAddr, ulPort);
170 ulClient.SetAttribute("Interval", TimeValue(MilliSeconds(interPacketInterval)));
171 ulClient.SetAttribute("MaxPackets", UintegerValue(1000000));
172
173 clientApps.Add(dlClient.Install(remoteHost));
174 clientApps.Add(ulClient.Install(ueNodes.Get(u)));
175
176 serverApps.Start(Seconds(startTimeSeconds->GetValue()));
177 clientApps.Start(Seconds(startTimeSeconds->GetValue()));
178 }
179
180 Simulator::Stop(Seconds(simTime));
182
184 return 0;
185}
holds a vector of ns3::Application pointers.
Parse command-line arguments.
void ConfigureDefaults()
Configure the default values.
Class for representing data rates.
Definition data-rate.h:78
This class can be used to hold variables of floating point type such as 'double' or 'float'.
Definition double.h:31
static void Bind(std::string name, const AttributeValue &value)
Iterate over the set of GlobalValues until a matching name is found and then set its value with Globa...
an Inet address class
aggregate IP/TCP/UDP functionality to existing Nodes.
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
void SetBase(Ipv4Address network, Ipv4Mask mask, Ipv4Address base="0.0.0.1")
Set the base network number, network mask and base address.
Ipv4InterfaceContainer Assign(const NetDeviceContainer &c)
Assign IP addresses to the net devices specified in the container based on the current network prefix...
Ipv4 addresses are stored in host order in this class.
static Ipv4Address GetAny()
Access to the IPv4 forwarding table, interfaces, and configuration.
Definition ipv4.h:69
holds a vector of std::pair of Ptr<Ipv4> and interface index.
Ipv4Address GetAddress(uint32_t i, uint32_t j=0) const
a class to represent an Ipv4 address mask
Helper class that adds ns3::Ipv4StaticRouting objects.
Ptr< Ipv4StaticRouting > GetStaticRouting(Ptr< Ipv4 > ipv4) const
Try and find the static routing protocol as either the main routing protocol or in the list of routin...
Helper class used to assign positions and mobility models to nodes.
holds a vector of ns3::NetDevice pointers
keep track of a set of node pointers.
uint32_t GetN() const
Get the number of Ptr<Node> stored in this container.
void Create(uint32_t n)
Create n nodes and append pointers to them to the end of this NodeContainer.
Ptr< Node > Get(uint32_t i) const
Get the Ptr<Node> stored in this container at a given index.
A helper to make it easier to instantiate an ns3::PacketSinkApplication on a set of nodes.
Build a set of PointToPointNetDevice objects.
void SetDeviceAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each NetDevice created by the helper.
void SetChannelAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each Channel created by the helper.
NetDeviceContainer Install(NodeContainer c)
Smart pointer class similar to boost::intrusive_ptr.
static void Destroy()
Execute the events scheduled with ScheduleDestroy().
Definition simulator.cc:131
static void Run()
Run the simulation.
Definition simulator.cc:167
static void Stop()
Tell the Simulator the calling event should be the last one executed.
Definition simulator.cc:175
Create a client application which sends UDP packets carrying a 32bit sequence number and a 64 bit tim...
Hold an unsigned integer type.
Definition uinteger.h:34
void SetDefault(std::string name, const AttributeValue &value)
Definition config.cc:883
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition log.h:191
Ptr< T > CreateObject(Args &&... args)
Create an object by type, with varying number of constructor parameters.
Definition object.h:619
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition nstime.h:1308
Time MilliSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition nstime.h:1320
serverApps
Definition first.py:43
clientApps
Definition first.py:53
Every class exported by the ns3 library is enclosed in the ns3 namespace.
mobility
Definition third.py:92