How to implement zigbee protocol in OMNeT++
To implement the Zigbee protocol in OMNeT++ has needs to setup a network scenario using the INET framework and possibly incorporate the particular zigbee model if available. The particular zigbee is fits of high-level communication protocols using low-power digital radios based on IEEE 802.15.4. Here, we offer the comprehensive procedure to implement the Zigbee in OMNeT++ using the INET framework:
Step-by-Step Implementation:
Step 1: Set Up OMNeT++ and INET Framework
- Install OMNeT++: Download and install the latest version of OMNeT++ from the OMNeT++
- Install INET Framework: Download and install the INET framework from the INET repository.
Step 2: Understand Zigbee Protocol
Zigbee operates on top of the IEEE 802.15.4 standard and contains layers for network and application support. Key features include:
- Low Power Consumption: Designed for low-power applications.
- Mesh Networking: Supports mesh networking topology.
- Low Data Rate: Suitable for low data rate applications.
Step 3: Create the Zigbee Protocol Module
Define the Module in .ned File
Create a .ned file for the Zigbee protocol module. This sample will assumes to generate a basic Zigbee network layer.
simple ZigbeeNetworkLayer
{
parameters:
@display(“i=block/cogwheel”);
double beaconInterval @unit(s) = default(1s); // Interval for sending beacons
gates:
input fromMacLayer;
output toMacLayer;
input fromApplicationLayer;
output toApplicationLayer;
}
Implement the Module in C++
Create the corresponding .cc and .h files.
ZigbeeNetworkLayer.h
#ifndef __ZIGBEE_NETWORK_LAYER_H_
#define __ZIGBEE_NETWORK_LAYER_H_
#include <omnetpp.h>
#include “inet/common/INETDefs.h”
#include “inet/linklayer/common/MacAddress.h”
#include <map>
using namespace omnetpp;
using namespace inet;
class ZigbeeNetworkLayer : public cSimpleModule
{
private:
double beaconInterval;
cMessage *beaconMsg;
std::map<MacAddress, simtime_t> neighborTable; // Stores neighbors and their last seen times
protected:
virtual void initialize() override;
virtual void handleMessage(cMessage *msg) override;
void sendBeacon();
void processBeacon(cMessage *msg);
void handleDataPacket(cPacket *pkt);
public:
ZigbeeNetworkLayer();
virtual ~ZigbeeNetworkLayer();
};
#endif
ZigbeeNetworkLayer.cc
#include “ZigbeeNetworkLayer.h”
Define_Module(ZigbeeNetworkLayer);
ZigbeeNetworkLayer::ZigbeeNetworkLayer()
{
beaconMsg = nullptr;
}
ZigbeeNetworkLayer::~ZigbeeNetworkLayer()
{
cancelAndDelete(beaconMsg);
}
void ZigbeeNetworkLayer::initialize()
{
beaconInterval = par(“beaconInterval”);
beaconMsg = new cMessage(“sendBeacon”);
scheduleAt(simTime() + beaconInterval, beaconMsg);
}
void ZigbeeNetworkLayer::handleMessage(cMessage *msg)
{
if (msg == beaconMsg)
{
sendBeacon();
scheduleAt(simTime() + beaconInterval, beaconMsg);
}
else if (strcmp(msg->getName(), “Beacon”) == 0)
{
processBeacon(msg);
}
else if (dynamic_cast<cPacket *>(msg))
{
handleDataPacket(check_and_cast<cPacket *>(msg));
}
else
{
// Handle other messages
}
}
void ZigbeeNetworkLayer::sendBeacon()
{
cMessage *beacon = new cMessage(“Beacon”);
send(beacon, “toMacLayer”);
}
void ZigbeeNetworkLayer::processBeacon(cMessage *msg)
{
// Process received beacon message
MacAddress sender = check_and_cast<MacAddressInd *>(msg)->getSrcAddress();
neighborTable[sender] = simTime();
delete msg;
}
void ZigbeeNetworkLayer::handleDataPacket(cPacket *pkt)
{
// Handle incoming data packets
send(pkt, “toApplicationLayer”);
}
Step 4: Integrate with Simulation Model
Incorporate the Zigbee module into a network simulation model.
Network Configuration .ned File
network ZigbeeNetwork
{
submodules:
node1: StandardHost {
parameters:
@display(“p=100,100”);
}
node2: StandardHost {
parameters:
@display(“p=300,100”);
}
// Add more nodes as needed
connections:
node1.pppg++ <–> { @display(“m=100,100”); } <–> node2.pppg++;
}
omnetpp.ini Configuration
network = ZigbeeNetwork
*.node*.pppg[*].queue.typename = “DropTailQueue”
*.node*.ipv4.routingTable = “inet.networklayer.routing.manet.Router”
*.node*.networkLayer.networkProtocol.typename = “IPv4NetworkLayer”
*.node*.transportLayer.tcp.typename = “Tcp”
*.node*.transportLayer.udp.typename = “Udp”
*.node*.application[*].typename = “UdpBasicApp”
*.node*.application[*].destAddresses = “node1” // Set destination as needed
*.node*.application[*].destPort = 2000
*.node*.application[*].startTime = uniform(0s, 10s)
*.node*.application[*].sendInterval = uniform(1s, 2s)
*.node*.application[*].packetLength = 512B
*.node*.app[0].typename = “ZigbeeNetworkLayer”
Step 5: Test and Debug
- Run Simulations: Execute simulations to test the behavior of your Zigbee module under various network conditions.
- Analyse Results: validate the correctness and performance of implementation.
- Debugging: Use OMNeT++’s debugging tools to troubleshoot any issues.
In this setup, we clearly see the performance of zigbee protocol that has make the scenario then integrate the zigbee model to match the high level communication protocol in OMNeT++ tool using the INET framework. Additional specifics will be provided on the methodology of the zigbee protocol in other simulations tool.
We’ve come up with some great ideas for setting up and running simulations of wireless routing protocols, like Zigbee, in OMNeT++. Our focus is on high-level communication protocols that utilize low-power digital radios following the IEEE 802.15.4 standard. If you want to achieve the best simulation outcomes, feel free to reach out to us!