cancelAction
Download Required: To use cancelAction
,
first download the Communications Toolbox Wireless Network Simulation Library add-on.
Description
cancelAction(
cancels an action scheduled to be performed during the specified wireless network
simulation.networkSimulator
,actionID
)
Examples
Schedule and Cancel Actions During Network Simulation
Simulate Bluetooth BR Network
Create a wirelessNetworkSimulator
object by using the wirelessNetworkSimulator.init()
function. By default, the wirelessNetworkSimulator
object applies free-space path loss model for the channel effects.
networkSimulator = wirelessNetworkSimulator.init();
Create two Bluetooth BR nodes, one with the "central"
role and other with the "peripheral"
role. Specify the position of the Peripheral node in meters.
centralNode = bluetoothNode("central"); peripheralNode = bluetoothNode("peripheral",Position=[1 0 0]);
Create a default Bluetooth BR connection configuration object to configure and share a connection between Bluetooth BR Central and Peripheral nodes.
cfgConnection = bluetoothConnectionConfig;
Configure connection between the Central and the Peripheral nodes.
connection = configureConnection( ...
cfgConnection,centralNode,peripheralNode);
Create and configure a networkTrafficOnOff
object to generate an On-Off application traffic pattern.
traffic = networkTrafficOnOff(DataRate=200,PacketSize=27, ...
GeneratePacket=true,OnTime=inf);
Add application traffic from the Central to the Peripheral node.
addTrafficSource(centralNode,traffic,DestinationNode=peripheralNode);
Add the Central and Peripheral nodes to the wireless network simulator.
addNodes(networkSimulator,[centralNode peripheralNode]);
Schedule Action
Create a custom function statusInfo
to define an one time action and periodic action for the simulator to perform during simulation. The input data for the custom function is stored as a structure and passed using the scheduleAction
function. For the one time action, the statusInfo
function displays the node details when the simulation time is 0.001s. For the periodic action, the statusInfo
function displays the physical layer statistics of the central node in the Bluetooth BR network.
Specify the ActionType
input argument of statusInfo
function as "OneTime"
. Also, specify the names of the nodes in the network as input.
userdata = struct( ... ActionType="OneTime", ... Nodes=[centralNode peripheralNode]);
Configure the simulator by using the scheduleAction
function to display the node details when the simulation time is 0.001s.
startTime = 0.001;
actionID1 = scheduleAction( ...
networkSimulator,@statusInfo,userdata,startTime);
Specify the ActionType
input argument value of statusInfo
function as "Periodic"
. Also, specify the central node and the simulator as inputs.
userdata = struct( ... ActionType="Periodic", ... CentralNode=centralNode, ... Simulator=networkSimulator);
Configure the simulator by using the scheduleAction
function to display the physical layer statistics of the central node at a time interval of 0.02s starting from the beginning of the simulation.
startTime = 0;
periodicity = 0.02;
actionID2 = scheduleAction( ...
networkSimulator,@statusInfo,userdata,startTime,periodicity);
Cancel Action
To cancel a scheduled action, use the cancelAction
function. Specify the value of the unique identifier denoting the action. The identifier is returned by the scheduleAction
function.
cancelAction(networkSimulator,actionID1)
Run Simulation
Specify the simulation time in seconds.
simulationTime = 0.1;
Run the simulation for the specified simulation time. You can notice that the one time action scheduled to perform at 0.001s is cancelled. The simulator performs only the scheduled periodic action.
run(networkSimulator,simulationTime);
-------Periodic Action ------- Statistics of Node1 at time 0.000 seconds: ReceivedPackets: 0 DecodeFailures: 0 PacketCollisions: 0 CoChannelCollisions: 0 CollisionsWithBREDR: 0 CollisionsWithNonBREDR: 0 CollisionsWithBREDRAndNonBREDR: 0 TransmittedPackets: 1 TransmittedBits: 366 -------End------- -------Periodic Action ------- Statistics of Node1 at time 0.020 seconds: ReceivedPackets: 16 DecodeFailures: 0 PacketCollisions: 0 CoChannelCollisions: 0 CollisionsWithBREDR: 0 CollisionsWithNonBREDR: 0 CollisionsWithBREDRAndNonBREDR: 0 TransmittedPackets: 17 TransmittedBits: 6222 -------End------- -------Periodic Action ------- Statistics of Node1 at time 0.040 seconds: ReceivedPackets: 32 DecodeFailures: 0 PacketCollisions: 0 CoChannelCollisions: 0 CollisionsWithBREDR: 0 CollisionsWithNonBREDR: 0 CollisionsWithBREDRAndNonBREDR: 0 TransmittedPackets: 33 TransmittedBits: 12078 -------End------- -------Periodic Action ------- Statistics of Node1 at time 0.060 seconds: ReceivedPackets: 48 DecodeFailures: 0 PacketCollisions: 0 CoChannelCollisions: 0 CollisionsWithBREDR: 0 CollisionsWithNonBREDR: 0 CollisionsWithBREDRAndNonBREDR: 0 TransmittedPackets: 49 TransmittedBits: 17934 -------End------- -------Periodic Action ------- Statistics of Node1 at time 0.080 seconds: ReceivedPackets: 64 DecodeFailures: 0 PacketCollisions: 0 CoChannelCollisions: 0 CollisionsWithBREDR: 0 CollisionsWithNonBREDR: 0 CollisionsWithBREDRAndNonBREDR: 0 TransmittedPackets: 65 TransmittedBits: 23790 -------End------- -------Periodic Action ------- Statistics of Node1 at time 0.100 seconds: ReceivedPackets: 80 DecodeFailures: 0 PacketCollisions: 0 CoChannelCollisions: 0 CollisionsWithBREDR: 0 CollisionsWithNonBREDR: 0 CollisionsWithBREDRAndNonBREDR: 0 TransmittedPackets: 81 TransmittedBits: 29646 -------End-------
function statusInfo(~,userdata) switch(userdata.ActionType) case "Periodic" fprintf("-------Periodic Action -------\n") fprintf("Statistics of %s at time %.3f seconds:\n", ... userdata.CentralNode.Name, ... userdata.Simulator.CurrentTime); stats = statistics(userdata.CentralNode); disp(stats.PHY) fprintf("-------End-------\n") case "OneTime" fprintf("-------One Time Action -------\n") fprintf("Node details:\n") for idx=1:numel(userdata.Nodes) fprintf("Name: %s ID: %d Role: %s\n", ... userdata.Nodes(idx).Name, ... userdata.Nodes(idx).ID, ... userdata.Nodes(idx).Role) end fprintf("-------End-------\n") end end
Input Arguments
networkSimulator
— Wireless network simulator
wirelessNetworkSimulator
object
Wireless network simulator, specified as a wirelessNetworkSimulator
object.
actionID
— Unique identifier of action to cancel
positive scalar integer
Unique identifier of action to cancel, specified as a positive scalar integer. The
unique identifier is returned by the scheduleAction
function.
Version History
Introduced in R2022bR2023a: Moved to Communications Toolbox Wireless Network Simulation Library from Bluetooth Toolbox
Previously, this wirelessNetworkSimulator
object function required Bluetooth® Toolbox.
See Also
Objects
Functions
Topics
- Create, Configure, and Simulate Bluetooth BR/EDR Piconet (Bluetooth Toolbox)
- Bluetooth BR/EDR Data and Voice Communication with WLAN Signal Interference (Bluetooth Toolbox)
- Simulate Multiple Bluetooth BR/EDR Piconets with ACL Traffic (Bluetooth Toolbox)
MATLAB 命令
您点击的链接对应于以下 MATLAB 命令:
请在 MATLAB 命令行窗口中直接输入以执行命令。Web 浏览器不支持 MATLAB 命令。
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
How to Get Best Site Performance
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)