To simulate Wireless Power Transfer (WPT) Networks using NS2 has includes designing the transfer of power wirelessly among the devices in a network. This could be helpful for environments such as Wireless Sensor Networks (WSNs) in which the nodes are charged using WPT to sustain the network’s operation.
Here’s how we can simulate WPT in NS2:
Steps to Simulate Wireless Power Transfer Networks Projects in NS2
- Install NS2
Make sure that we have NS2 installed and correctly configured. If not installed, download and install it from the NS2 website.
- Understand Wireless Power Transfer Components
In WPT networks, the key components that contain:
- Energy transmitters: Devices that deliver wireless energy to other nodes.
- Energy receivers: Devices (like sensors or mobile nodes) that receive power from the transmitters.
- WPT model: A model for how power is transferred, accounting for effectiveness and distance among nodes.
- Energy-aware routing: A routing protocol that deliberates the energy levels of nodes.
- Extend NS2 for Energy Models
While NS2 doesn’t directly support WPT, we will require to expanding its energy model to support power transfer. NS2 has contains an EnergyModel for nodes, that monitors the power consumed in the course of the communication and idle times. We can adapt this design to replicate the reception of wireless power.
- Define Nodes with Energy Models
We need to set up nodes with energy models to replicate the battery levels of nodes and how they are recharged using WPT.
Example of configuring nodes with energy models:
set ns [new Simulator]
# Configure nodes with energy models
$ns node-config -energyModel EnergyModel \
-initialEnergy 100.0 \
-rxPower 1.0 \
-txPower 1.5 \
-idlePower 0.5 \
-sleepPower 0.01
- Set Up Wireless Power Transfer (WPT) Nodes
Set up a transmitter node that sent power wirelessly and receiver nodes that receive power. The transmitter can have unlimited power, since the receiver nodes are set up with limited initial energy.
# Define WPT transmitter and receiver nodes
set transmitter [$ns node]
set receiver1 [$ns node]
set receiver2 [$ns node]
# Set initial energy of receiver nodes
$receiver1 set initialEnergy 50
$receiver2 set initialEnergy 50
- Model Wireless Power Transfer
Wireless power transfer among nodes depends on distance and efficiency. To replicate WPT, we can design the charging process according to the proximity of nodes and the amount of power available.
Example:
# Function to simulate power transfer from transmitter to receiver
proc transfer-power {transmitter receiver amount distance} {
set efficiency [expr {1.0 / ($distance / 10.0)}] ;# Efficiency decreases with distance
set transferred [expr {$amount * $efficiency}]
$receiver add-energy $transferred
puts “Transferred $transferred power to $receiver”
}
# Call power transfer function
$ns at 5.0 “transfer-power $transmitter $receiver1 10 50.0”
$ns at 10.0 “transfer-power $transmitter $receiver2 10 100.0”
In this instance, the amount of power transferred relay on the distance among the transmitter and receiver. The transfer-power function replicates on how much energy is sent based on a predefined effectiveness model.
- Simulate Power Transfer Scheduling
In real networks, WPT happens at specific times or continuously. We can schedule the power transfer events in NS2 using timed events:
# Schedule power transfer at regular intervals
$ns at 5.0 “transfer-power $transmitter $receiver1 10 50”
$ns at 15.0 “transfer-power $transmitter $receiver1 10 50”
This will recharge the receiver node at 5 and 15 seconds in the simulation.
- Configure Energy-Aware Routing
We are replicating a network in which nodes are includes in communication such as WSNs; we need to execute energy-aware routing. This makes sure that the routing protocol reflects the energy levels of nodes when making routing decisions.
Example using AODV:
# configure AODV routing
$ns node-config -adhocRouting AODV
In the C++ implementation of the routing protocol, we can adjust the routing decision according to node energy levels to select routes via nodes with higher battery levels.
- Simulate Data Transmission
Configure communication among the nodes, in which the receiver nodes can send data while simultaneously being charged through WPT. Utilize agents such as UDP or TCP to replicate data transmission.
# Set up UDP data transmission between receiver and destination
set udp [new Agent/UDP]
$ns attach-agent $receiver1 $udp
set null [new Agent/Null]
$ns attach-agent $receiver2 $null
$ns connect $udp $null
# Create CBR traffic to simulate data flow
set cbr [new Application/Traffic/CBR]
$cbr attach-agent $udp
$cbr set packetSize_ 512
$cbr set interval_ 0.1 ;# Send data every 0.1 seconds
This permit the node to send data while receiving power.
- Run the Simulation
After configuring the nodes, power transfer, and communication, we can execute the simulation using the following command:
ns wireless_power_transfer.tcl
This will replicate an environment in which wireless power transfer happens among nodes at scheduled intervals, and nodes send data using their available energy.
- Analyse Performance Metrics
After executing the simulation, we can measure parameters like:
- Energy consumption: monitor on how much energy is consumed by each node and how much is replenished through WPT.
- Network lifetime: Evaluate the time until nodes execute out of energy or how long the network perform with WPT recharging.
- Throughput: Evaluate the data successfully routed in the course of the simulation.
- Charging efficiency: Measure on how effectively the transmitter recharges the receiver nodes, relay on distance and charging schedules.
We can extract these parameters from the trace file created by NS2 and utilize tools such as AWK or scripts for post-processing.
- Advanced WPT Features
We can improve the simulation by adding:
- Multiple transmitters: Replicate an environment with multiple energy transmitters delivering power to diverse receiver nodes.
- Mobility models: Simulate mobile nodes that move while receiving wireless power.
- Dynamic power allocation: Execute dynamic approaches in which the transmitter adapts the power output according to the receiver’s battery level or other factors.
- Cooperative power transfer: Discover cooperative WPT environment in which nodes help transmit energy to others in a cooperative network.
Example TCL Script for Wireless Power Transfer Simulation
Here is an instance TCL script for replicating wireless power transfer:
# Wireless Power Transfer Network Simulation
set ns [new Simulator]
set tracefile [open wpt_network.tr w]
set namfile [open wpt_network.nam w]
$ns trace-all $tracefile
$ns namtrace-all $namfile
# Configure nodes with energy models
$ns node-config -energyModel EnergyModel \
-initialEnergy 100 \
-rxPower 1.0 \
-txPower 1.5 \
-idlePower 0.5 \
-sleepPower 0.01
# Define transmitter and receiver nodes
set transmitter [$ns node]
set receiver1 [$ns node]
set receiver2 [$ns node]
# Set initial energy of receiver nodes
$receiver1 set initialEnergy 50
$receiver2 set initialEnergy 50
# Define power transfer function
proc transfer-power {transmitter receiver amount distance} {
set efficiency [expr {1.0 / ($distance / 10.0)}]
set transferred [expr {$amount * $efficiency}]
$receiver add-energy $transferred
puts “Transferred $transferred power to $receiver”
}
# Schedule power transfer
$ns at 5.0 “transfer-power $transmitter $receiver1 10 50.0”
$ns at 10.0 “transfer-power $transmitter $receiver2 10 100.0”
# Simulate data transmission between receiver1 and receiver2
set udp [new Agent/UDP]
$ns attach-agent $receiver1 $udp
set null [new Agent/Null]
$ns attach-agent $receiver2 $null
$ns connect $udp $null
# Create CBR traffic for data transmission
set cbr [new Application/Traffic/CBR]
$cbr attach-agent $udp
$cbr set packetSize_ 512
$cbr set interval_ 0.1
# Start simulation
$ns at 1.0 “$cbr start”
$ns at 20.0 “finish”
$ns run
Summary:
- Install and set up NS2 for wireless network simulations.
- Describe nodes with energy models.
- Model wireless power transfer using a power transfer function.
- Configure communication among nodes.
We had successfully simulated the Wireless Power Transfer (WPT) Networks using ns2 tool and it is used to transfer the power wirelessly between the devices within the network and we deliver the sample snippets and elaborated procedures to complete the execution. Get personalized Wireless Power Transfer Networks Projects simulation results in ns2 tool from phdprime.com. Stay in contact with us for novel help; we will give you with the greatest topic aid.WE also develop Wireless Sensor Networks (WSNs) for your projects.
