addMeshPath

This example shows how to simulate a wireless mesh network by using WLAN Toolbox™ with the Communications Toolbox™ Wireless Network Simulation Library.

Using this example, you:

Check if the Communications Toolbox™ Wireless Network Simulation Library support package is installed. If the support package is not installed, MATLAB® returns an error with a link to download and install the support package.

wirelessnetworkSupportPackageCheck;

Create a wireless network simulator.

networksimulator = wirelessNetworkSimulator.init();

Create a wlanDeviceConfig object, setting the mode to "mesh". Use this configuration to create three WLAN nodes.

deviceCfg = wlanDeviceConfig(Mode="mesh");
nodes = wlanNode(Position=[0 0 0; 40 0 0; 20 0 0],DeviceConfig=deviceCfg);

Create a networkTrafficOnOff object to generate an On-Off application traffic pattern. Specify the data rate in kilobits per second and the packet size in bytes. Enable packet generation to generate an application packet with a payload.

traffic = networkTrafficOnOff(DataRate=100,PacketSize=10,GeneratePacket=true);

Create a mesh path, using the first node as the source, the second node as the destination, and the third node as the mesh path node.

addMeshPath(nodes(1),nodes(2),nodes(3));

Add application traffic from the destination node to the source node. Set the AccessCategory to 2. This value corresponds to the Video access category.

addTrafficSource(nodes(1),traffic,DestinationNode=nodes(2),AccessCategory=2);

Add the three nodes to the wireless network simulator.

addNodes(networksimulator,nodes(1));
addNodes(networksimulator,nodes(2));
addNodes(networksimulator,nodes(3));

Set the simulation time in seconds and run the simulation.

simulationTime = 0.05;
run(networksimulator,simulationTime);

Get and display the physical layer (PHY) statistics of the three nodes.

stats1 = statistics(nodes(1));
stats2 = statistics(nodes(2));
stats3 = statistics(nodes(3));
disp(stats1.PHY)

         TransmittedPackets: 126
    TransmittedPayloadBytes: 4788
            ReceivedPackets: 126
       ReceivedPayloadBytes: 1764
             DroppedPackets: 0

disp(stats2.PHY)

         TransmittedPackets: 0
    TransmittedPayloadBytes: 0
            ReceivedPackets: 252
       ReceivedPayloadBytes: 6552
             DroppedPackets: 0

disp(stats3.PHY)

         TransmittedPackets: 126
    TransmittedPayloadBytes: 1764
            ReceivedPackets: 126
       ReceivedPayloadBytes: 4788
             DroppedPackets: 0