To implement integrated access and Backhaul (IAB) networks in ns-3 it covers simulation design where the access network (serving end users) and backhaul network (connecting to the core network) are combined. We manage IAB networks, making us a dependable source for all your programming assistance needs. Here below is the step by procedure to implement the IAB network in ns-3:
Step-by-Step Guide to Implement E-Health Networks in ns-3
- Install ns-3
Ensure that ns-3 is installed on your system.
- Define the Network Topology
Define the network topology that includes the following components:
- User Equipment (UE)
- Base Stations (BS) or gNBs (next-generation Node Bs)
- Backhaul nodes (for wireless backhaul)
- Core network nodes
- Implement Network Nodes
Create network nodes using NodeContainer. Define different types of nodes as per your IAB network requirements.
NodeContainer ueNodes, gNbNodes, backhaulNodes, coreNodes;
ueNodes.Create(numUEs);
gNbNodes.Create(numGNBs);
backhaulNodes.Create(numBackhaulNodes);
coreNodes.Create(numCoreNodes);
- Set Up Network Devices
Install network devices on the nodes using appropriate network interfaces. For example, use LTE or 5G for access network and point-to-point links for backhaul.
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute(“DataRate”, StringValue(“1Gbps”));
pointToPoint.SetChannelAttribute(“Delay”, StringValue(“2ms”));
NetDeviceContainer backhaulDevices = pointToPoint.Install(backhaulNodes);
LteHelper lteHelper;
NetDeviceContainer ueDevices = lteHelper.InstallUeDevice(ueNodes);
NetDeviceContainer gNbDevices = lteHelper.InstallEnbDevice(gNbNodes);
- Configure Mobility Model
Set up the mobility model for the nodes to simulate realistic movement of UEs and static positions of gNBs and backhaul nodes.
MobilityHelper mobility;
mobility.SetMobilityModel(“ns3::ConstantPositionMobilityModel”);
mobility.Install(gNbNodes);
mobility.Install(backhaulNodes);
mobility.Install(coreNodes);
mobility.SetMobilityModel(“ns3::RandomWalk2dMobilityModel”,
“Bounds”, RectangleValue(Rectangle(-50, 50, -50, 50)));
mobility.Install(ueNodes);
- Install LTE/5G Applications
Set up the LTE or 5G applications to simulate the access network traffic between UEs and gNBs
lteHelper.Attach(ueDevices, gNbDevices.Get(0));
Ptr<LteHelper> lteHelper = CreateObject<LteHelper>();
ApplicationContainer serverApps;
ApplicationContainer clientApps;
uint16_t dlPort = 1234;
uint16_t ulPort = 2000;
for (uint32_t i = 0; i < ueNodes.GetN(); ++i) {
Ptr<Node> ueNode = ueNodes.Get(i);
Ptr<Node> remoteHost = remoteHostContainer.Get(0);
// Install and start applications on UEs and remote host
OnOffHelper onoff(“ns3::UdpSocketFactory”, Address(InetSocketAddress(ueInterfaces.GetAddress(i), dlPort)));
onoff.SetConstantRate(DataRate(“500kb/s”), 1024);
clientApps.Add(onoff.Install(remoteHost));
PacketSinkHelper sink(“ns3::UdpSocketFactory”, Address(InetSocketAddress(ueInterfaces.GetAddress(i), dlPort)));
serverApps.Add(sink.Install(ueNode));
}
clientApps.Start(Seconds(1.0));
clientApps.Stop(Seconds(10.0));
serverApps.Start(Seconds(1.0));
serverApps.Stop(Seconds(10.0));
- Set Up Routing Protocols
Configure routing protocols for both access and backhaul networks.
InternetStackHelper internet;
internet.Install(backhaulNodes);
internet.Install(coreNodes);
Ipv4AddressHelper address;
address.SetBase(“10.1.1.0”, “255.255.255.0”);
Ipv4InterfaceContainer backhaulInterfaces = address.Assign(backhaulDevices);
- Assign IP Addresses
Assign IP addresses to the network devices for both access and backhaul networks.
Ipv4AddressHelper ueIpAddress;
ueIpAddress.SetBase(“7.0.0.0”, “255.0.0.0”);
Ipv4InterfaceContainer ueIpIfaces = ueIpAddress.Assign(ueDevices);
Ipv4AddressHelper gNbIpAddress;
gNbIpAddress.SetBase(“6.0.0.0”, “255.0.0.0”);
Ipv4InterfaceContainer gNbIpIfaces = gNbIpAddress.Assign(gNbDevices);
- Set Up Applications on Backhaul and Core Networks
Install applications to simulate data traffic on the backhaul and core networks.
PacketSinkHelper sink(“ns3::UdpSocketFactory”, InetSocketAddress(Ipv4Address::GetAny(), 9));
ApplicationContainer serverApps = sink.Install(coreNodes.Get(0));
UdpEchoServerHelper echoServer(9);
ApplicationContainer serverApps = echoServer.Install(coreNodes.Get(0));
UdpEchoClientHelper echoClient(backhaulInterfaces.GetAddress(1), 9);
echoClient.SetAttribute(“MaxPackets”, UintegerValue(100));
echoClient.SetAttribute(“Interval”, TimeValue(Seconds(1.0)));
echoClient.SetAttribute(“PacketSize”, UintegerValue(1024));
ApplicationContainer clientApps = echoClient.Install(ueNodes.Get(0));
clientApps.Start(Seconds(2.0));
clientApps.Stop(Seconds(10.0));
- Run the Simulation
Configure the simulation runtime and execute it.
Simulator::Stop(Seconds(20.0));
Simulator::Run();
Simulator::Destroy();
Example of a Simple IAB Network Script
The given below are the samples to complete the scripts for IAB network;
#include “ns3/core-module.h”
#include “ns3/network-module.h”
#include “ns3/internet-module.h”
#include “ns3/point-to-point-module.h”
#include “ns3/applications-module.h”
#include “ns3/mobility-module.h”
#include “ns3/point-to-point-module.h”
#include “ns3/ipv4-global-routing-helper.h”
#include “ns3/lte-module.h”
using namespace ns3;
int main(int argc, char *argv[]) {
NodeContainer ueNodes, gNbNodes, backhaulNodes, coreNodes;
ueNodes.Create(10);
gNbNodes.Create(3);
backhaulNodes.Create(3);
coreNodes.Create(1);
// Point-to-Point setup for backhaul
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute(“DataRate”, StringValue(“1Gbps”));
pointToPoint.SetChannelAttribute(“Delay”, StringValue(“2ms”));
NetDeviceContainer backhaulDevices = pointToPoint.Install(backhaulNodes);
// LTE setup for access network
Ptr<LteHelper> lteHelper = CreateObject<LteHelper>();
NetDeviceContainer ueDevices = lteHelper->InstallUeDevice(ueNodes);
NetDeviceContainer gNbDevices = lteHelper->InstallEnbDevice(gNbNodes);
// Mobility setup
MobilityHelper mobility;
mobility.SetMobilityModel(“ns3::ConstantPositionMobilityModel”);
mobility.Install(gNbNodes);
mobility.Install(backhaulNodes);
mobility.Install(coreNodes);
mobility.SetMobilityModel(“ns3::RandomWalk2dMobilityModel”,
“Bounds”, RectangleValue(Rectangle(-50, 50, -50, 50)));
mobility.Install(ueNodes);
// Internet stack
InternetStackHelper internet;
internet.Install(backhaulNodes);
internet.Install(coreNodes);
Ipv4AddressHelper address;
address.SetBase(“10.1.1.0”, “255.255.255.0”);
Ipv4InterfaceContainer backhaulInterfaces = address.Assign(backhaulDevices);
Ipv4AddressHelper ueIpAddress;
ueIpAddress.SetBase(“7.0.0.0”, “255.0.0.0”);
Ipv4InterfaceContainer ueIpIfaces = ueIpAddress.Assign(ueDevices);
Ipv4AddressHelper gNbIpAddress;
gNbIpAddress.SetBase(“6.0.0.0”, “255.0.0.0”);
Ipv4InterfaceContainer gNbIpIfaces = gNbIpAddress.Assign(gNbDevices);
lteHelper->Attach(ueDevices, gNbDevices.Get(0));
// Install applications
PacketSinkHelper sink(“ns3::UdpSocketFactory”, InetSocketAddress(Ipv4Address::GetAny(), 9));
ApplicationContainer serverApps = sink.Install(coreNodes.Get(0));
UdpEchoServerHelper echoServer(9);
serverApps = echoServer.Install(coreNodes.Get(0));
UdpEchoClientHelper echoClient(backhaulInterfaces.GetAddress(1), 9);
echoClient.SetAttribute(“MaxPackets”, UintegerValue(100));
echoClient.SetAttribute(“Interval”, TimeValue(Seconds(1.0)));
echoClient.SetAttribute(“PacketSize”, UintegerValue(1024));
ApplicationContainer clientApps = echoClient.Install(ueNodes.Get(0));
clientApps.Start(Seconds(2.0));
clientApps.Stop(Seconds(10.0));
Simulator::Stop(Seconds(20.0));
Simulator::Run();
Simulator::Destroy();
return 0;
}
Overall, we discussed here about the Integrated Access and Backhaul Networks in ns-3 environment and further we support all kinds of Integrated Access and Backhaul Networks in diverse environments.