nodeMobilityRandomWaypoint

R2026b

Implement random waypoint mobility model

Since R2026a

Description

Use the nodeMobilityRandomWaypoint object to implement a random waypoint mobility model.

Creation

Syntax

randomWaypointModel = nodeMobilityRandomWaypoint

randomWaypointModel = nodeMobilityRandomWaypoint(PropertyName=Value)

Description

randomWaypointModel = nodeMobilityRandomWaypoint creates a default random waypoint mobility model.

randomWaypointModel = nodeMobilityRandomWaypoint(PropertyName=Value) sets properties using one or more optional name-value arguments. For example, BoundaryShape="circle" sets the shape of node mobility area to "circle".

Note that, in the random waypoint model, a wireless node starts by pausing for some duration at a location before moving toward its next random destination (waypoint) with a random speed. The node repeats this process at each waypoint. When you specify a custom mobility model, the position and velocity parameters of the mobility model determines the initial position and the initial velocity of the node.

Properties

SpeedRange — Speed range

[0.4150 1.6600] (default) | two-element vector

Speed range, specified as a two-element vector. The first element indicates the minimum speed and the second element indicates the maximum speed of the node, both drawn from a continuous uniform distribution. Units are in meters per second.

To set the speed to a constant value, specify SpeedRange as a two-element row vector with identical values.

Data Types: single | double

PauseDuration — Pause duration of wireless node

0 (default) | nonnegative scalar

Pause duration of the wireless node after reaching a target waypoint, specified as a nonnegative scalar. Units are in seconds.

Data Types: single | double

BoundaryShape — Shape of node mobility area

"rectangle" (default) | "circle"

Shape of the node mobility area, specified as "rectangle" or "circle".

Bounds — Center coordinates and dimensions of mobility area

[0 0 10 10] (default) | three-element numeric vector | four-element numeric vector

Center coordinates and dimensions of the mobility area, specified as a three-element or four-element numeric vector, depending on the value of the BoundaryShape argument. Units are in meters.

• "rectangle" — Specify a four-element numeric vector of the form [x_center y_center length width]. The default value is [x_current y_current 10 10], where the first two elements specify the x- and y-coordinates of current node position. You can also specify this value as a column vector.

• "circle" — Specify a three-element numeric vector of the form [x_center y_center radius]. The default value is [x_current y_current 10], where the first two elements are the x- and y-coordinates of the current node position. You can also specify this value as a column vector.

Data Types: single | double

RefreshInterval — Refresh Interval

0.1 (default) | nonnegative scalar

Refresh interval, specified as a nonnegative numeric scalar. The nodeMobilityRandomWaypoint object updates the position and velocity information once during this refresh interval, but only when a subclass of wnet.Node request it. The units are in seconds.

Note that, if you set RefreshInterval to 0, the object updates position and velocity information immediately whenever a subclass of wnet.Node requests it.

Data Types: single | double

Examples

Create Default Random Waypoint Model

This command creates the random mobility model with all default settings.

randomWaypointModel = nodeMobilityRandomWaypoint

randomWaypointModel = 
  nodeMobilityRandomWaypoint with properties:

         SpeedRange: [0.4150 1.6600]
      PauseDuration: 0
      BoundaryShape: "rectangle"
             Bounds: [0 0 10 10]
    RefreshInterval: 0.1000

Create Customized Random Waypoint Model

This syntax sets specific properties for the random waypoint mobility model using name-value arguments.

randomWaypointModel = 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

randomWaypointModel = 
  nodeMobilityRandomWaypoint with properties:

         SpeedRange: [1 2]
      PauseDuration: 0
      BoundaryShape: "circle"
             Bounds: [0 0 20]
    RefreshInterval: 0.1000

Version History

Introduced in R2026a