How to Implement network Coverage Improvement in ns3

To implement the network coverage improvements in ns3, we need to adapt the transmission power in the relay nodes in the implemented network elements and to enhance the numerous network parameters that can be executed.

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Now, we are going to offer the procedures on how to implement the network coverage improvements in ns3:

Step-by-Step Guide

1. Install ns3: Make sure ns3 is installed on the system.
2. Set up Your Simulation Environment: Create a new simulation script or modify an existing one. Include necessary modules such as network, internet, and mobility.
3. Define Network Topology: Set up the network topology by defining nodes, channels, and devices.

NodeContainer nodes;

nodes.Create(10); // Example with 10 nodes

YansWifiChannelHelper channel = YansWifiChannelHelper::Default();

YansWifiPhyHelper phy = YansWifiPhyHelper::Default();

phy.SetChannel(channel.Create());

WifiHelper wifi = WifiHelper::Default();

WifiMacHelper mac;

Ssid ssid = Ssid(“ns-3-ssid”);

mac.SetType(“ns3::StaWifiMac”,

“Ssid”, SsidValue(ssid),

“ActiveProbing”, BooleanValue(false));

NetDeviceContainer devices = wifi.Install(phy, mac, nodes);

Configure Internet Stack: Install the internet stack on the nodes and assign IP addresses.

InternetStackHelper stack;

stack.Install(nodes);

Ipv4AddressHelper address;

address.SetBase(“10.1.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces = address.Assign(devices);

Implement Coverage Improvement Mechanism: Implement mechanisms to improve network coverage. This could include deploying relay nodes, adjusting transmission power, or optimizing node placement.

class CoverageImprovementHelper

{

public:

static void AdjustTransmitPower(NodeContainer nodes, double powerDbm)

{

for (NodeContainer::Iterator it = nodes.Begin(); it != nodes.End(); ++it)

{

Ptr<Node> node = *it;

Ptr<NetDevice> device = node->GetDevice(0);

Ptr<WifiNetDevice> wifiDevice = DynamicCast<WifiNetDevice>(device);

Ptr<WifiPhy> wifiPhy = wifiDevice->GetPhy();

wifiPhy->SetAttribute(“TxPowerStart”, DoubleValue(powerDbm));

wifiPhy->SetAttribute(“TxPowerEnd”, DoubleValue(powerDbm));

std::cout << “Node ” << node->GetId() << ” set to power: ” << powerDbm << ” dBm” << std::endl;

}

}

static void DeployRelayNodes(NodeContainer nodes, NodeContainer relayNodes)

{

// Example deployment strategy

for (NodeContainer::Iterator it = relayNodes.Begin(); it != relayNodes.End(); ++it)

{

Ptr<Node> relay = *it;

// Place relay nodes at strategic locations

// Example: Set relay nodes at specific coordinates

Ptr<MobilityModel> mobility = relay->GetObject<MobilityModel>();

mobility->SetPosition(Vector(50.0, 50.0, 0.0)); // Adjust as needed

}

}

};

Setup Coverage Improvement in the Simulation: Integrate the coverage improvement helper into your simulation script.

int main(int argc, char *argv[])

{

CommandLine cmd;

cmd.Parse(argc, argv);

NodeContainer nodes;

nodes.Create(8); // 8 regular nodes

NodeContainer relayNodes;

relayNodes.Create(2); // 2 relay nodes

YansWifiChannelHelper channel = YansWifiChannelHelper::Default();

YansWifiPhyHelper phy = YansWifiPhyHelper::Default();

phy.SetChannel(channel.Create());

WifiHelper wifi = WifiHelper::Default();

WifiMacHelper mac;

Ssid ssid = Ssid(“ns-3-ssid”);

mac.SetType(“ns3::StaWifiMac”,

“Ssid”, SsidValue(ssid),

“ActiveProbing”, BooleanValue(false));

NetDeviceContainer devices = wifi.Install(phy, mac, nodes);

NetDeviceContainer relayDevices = wifi.Install(phy, mac, relayNodes);

InternetStackHelper stack;

stack.Install(nodes);

stack.Install(relayNodes);

Ipv4AddressHelper address;

address.SetBase(“10.1.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces = address.Assign(devices);

Ipv4InterfaceContainer relayInterfaces = address.Assign(relayDevices);

// Adjust transmit power for all nodes

double powerDbm = 20.0; // Example power level in dBm

CoverageImprovementHelper::AdjustTransmitPower(nodes, powerDbm);

CoverageImprovementHelper::AdjustTransmitPower(relayNodes, powerDbm);

// Deploy relay nodes at strategic locations

CoverageImprovementHelper::DeployRelayNodes(nodes, relayNodes);

Simulator::Run();

Simulator::Destroy();

return 0;

}

Explanation

1. CoverageImprovementHelper Class:
   • AdjustTransmitPower: This static method iterates through the nodes and sets their transmit power to a specified level.
   • DeployRelayNodes: This static method places relay nodes at strategic locations to improve network coverage.
2. Main Function:
   • Sets up the nodes, installs the PHY and MAC layers, configures the internet stack, assigns IP addresses, and runs the simulation.
   • Uses CoverageImprovementHelper to adjust the transmit power of the nodes and deploy relay nodes at specific locations.

Overall, here we discussed the basic knowledge about how to implement the network coverage improvements in ns3 framework and additionally we offer and deliver all kinds of network coverage improvements that perform in diver simulation scenarios.