Simulate Mobility of UE Node in 5G Network

Since R2026a

This example uses:

Incorporate mobility for an instance of a user equipment (UE) in a simple 5G wireless network. Create a base station (gNB) and a UE, and specify a mobility model for the UE directly in the code. Select either random walk, random waypoint, or constant velocity as the mobility model. Then, run the simulation, and obtain the statistics for the gNB and UE nodes.

Initialize the wireless network simulator.

networkSimulator = wirelessNetworkSimulator.init;

Create a gNB node with default settings

gnb = nrGNB(Name="gnb1");

Create a UE node.

ue = nrUE(Name="ue1");

Initialize the wireless network viewer.

visualizer = wirelessNetworkViewer;

Add the gNB and UE nodes to the wireless network viewer.

addNodes(visualizer,{gnb ue})

Select the mobility model for the UE node. Create the selected mobility model and assign it to the UE node.

mobilityModel = "Random Walk"; 
switch mobilityModel
    case "Random Walk"
        mobilityModel = nodeMobilityRandomWalk( ...
    BoundaryShape= "circle", ...
    Bounds=[0 0 20], ...           % Center at (0,0), radius 20
    SpeedRange=[1 2], ...          % Speed range between 1 and 2 (Units are in meters per second)
    WalkMode="distance", ...       % Change direction after a fixed distance
    Distance= 0.6, ...             % Change direction every 0.6 meters
    RefreshInterval= 0.1);         % Refresh every 0.1 seconds
    case "Random Waypoint"
        mobilityModel = nodeMobilityRandomWaypoint( ...
    BoundaryShape= "circle", ...
    Bounds=[0 0 20], ...           % Center at (0,0), radius 20
    SpeedRange=[1 2], ...          % Speed range between 1 and 2
    RefreshInterval= 0.1);         % Refresh every 0.1 seconds; 
    case "Constant Velocity"
        mobilityModel = nodeMobilityConstantVelocity( ...
    Velocity=[2 1 0], ...          % velocity vector in m/s along x, y, z axes
    RefreshInterval= 0.1);         % Refresh every 0.1 seconds;
end
addMobility(ue,MobilityModel=mobilityModel)

Establish a connection between the UE and gNB nodes.

connectUE(gnb,ue)

Create a voice over Internet protocol (VoIP) application traffic pattern object

traffic = networkTrafficVoIP;

Add the data traffic source to the gNB node. Set the UE node as the destination node.

addTrafficSource(gnb,traffic,DestinationNode=ue)

Add the gNB and UE nodes to the wireless network simulator.

addNodes(networkSimulator,gnb)
addNodes(networkSimulator,ue)

Set the simulation time.

simulationTime = 1;

Run the simulation.

run(networkSimulator,simulationTime)

Figure Wireless Network Viewer contains an axes object. The axes object with xlabel X-axis (m), ylabel Y-axis (m) contains 6 objects of type line, text. One or more of the lines displays its values using only markers This object represents nrGNB.

Obtain the statistics for the gNB and UE nodes.

gnbStats = statistics(gnb);
gnbAPPStats=gnbStats.App

gnbAPPStats = struct with fields:
    TransmittedPackets: 50
      TransmittedBytes: 1800
       ReceivedPackets: 0
         ReceivedBytes: 0

ueStats = statistics(ue);
ueAPPStats=ueStats.App

ueAPPStats = struct with fields:
    TransmittedPackets: 0
      TransmittedBytes: 0
       ReceivedPackets: 50
         ReceivedBytes: 1800

Simulate Mobility of UE Node in 5G Network

See Also

Objects

Classes