How to Implement Wireless Power Transfer Networks in ns2

To implement Wireless Power Transfer (WPT) networks in NS2 has numerous steps that have to emulate a network in which the nodes can wirelessly transfer energy to other nodes in addition to data communication. This concept is often discovered in scenarios in which the IoT devices, sensors, or other low-power devices need continuous power without wired connections.

The given below is the step-by-step procedure to implement a simple Wireless Power Transfer (WPT) network in NS2:

Step-by-Step Implementation:

  1. Understand Wireless Power Transfer (WPT) Components:
  • Power Transmitter Node: A node capable of transmitting power wirelessly to other nodes.
  • Power Receiver Node: A node that receives power wirelessly from a transmitter node.
  • Communication Node: Nodes that interacts data in the network since possibly also being included in WPT.
  1. Set Up the NS2 Environment:
  • Make sure NS2 is installed on the system.
  • Understand yourself with writing TCL scripts, as NS2 simulations are controlled through TCL.
  1. Define the Network Topology:
  • Generate nodes that signify power transmitters, power receivers, and communication nodes. These nodes will mimic both energy and data transfer.

# Define the simulator

set ns [new Simulator]

# Create a trace file for analysis

set tracefile [open out.tr w]

$ns trace-all $tracefile

# Create a NAM file for animation

set namfile [open out.nam w]

$ns namtrace-all-wireless $namfile 10

# Set up the network parameters

set opt(chan)   Channel/WirelessChannel      ;# Channel type

set opt(prop)   Propagation/TwoRayGround     ;# Radio-propagation model

set opt(netif)  Phy/WirelessPhy              ;# Network interface type

set opt(mac)    Mac/802_11                   ;# MAC type

set opt(ifq)    Queue/DropTail/PriQueue      ;# Interface queue type

set opt(ll)     LL                           ;# Link layer type

set opt(ant)    Antenna/OmniAntenna          ;# Antenna model

set opt(ifqlen) 50                           ;# Max packet in ifq

set opt(x)      1000                         ;# X dimension of the topography

set opt(y)      1000                         ;# Y dimension of the topography

set opt(adhocRouting) AODV                   ;# Ad hoc routing protocol

# Create a topography object

create-god 50

# Configure the nodes (e.g., power transmitters, receivers, communication nodes)

$ns node-config -adhocRouting $opt(adhocRouting) \

-llType $opt(ll) \

-macType $opt(mac) \

-ifqType $opt(ifq) \

-ifqLen $opt(ifqlen) \

-antType $opt(ant) \

-propType $opt(prop) \

-phyType $opt(netif) \

-channelType $opt(chan) \

-topoInstance $topo \

-agentTrace ON \

-routerTrace ON \

-macTrace OFF \

-movementTrace ON

# Create nodes: Power Transmitters, Power Receivers, and Communication Nodes

set transmitter [$ns node]  ;# Power Transmitter Node

set receiver1 [$ns node]    ;# Power Receiver Node 1

set receiver2 [$ns node]    ;# Power Receiver Node 2

set comm_node1 [$ns node]   ;# Communication Node 1

set comm_node2 [$ns node]   ;# Communication Node 2

# Set initial positions for the nodes

$transmitter set X_ 500.0

$transmitter set Y_ 500.0

$transmitter set Z_ 0.0

$receiver1 set X_ 300.0

$receiver1 set Y_ 300.0

$receiver1 set Z_ 0.0

$receiver2 set X_ 700.0

$receiver2 set Y_ 700.0

$receiver2 set Z_ 0.0

$comm_node1 set X_ 200.0

$comm_node1 set Y_ 200.0

$comm_node1 set Z_ 0.0

$comm_node2 set X_ 800.0

$comm_node2 set Y_ 800.0

$comm_node2 set Z_ 0.0

  1. Simulate Wireless Power Transfer:
  • Apply the wireless power transfer process in which the transmitter node sends power to the receiver nodes.

# Example procedure to simulate wireless power transfer

proc transfer_power {transmitter receiver power_amount} {

global ns

puts “Transferring $power_amount power from $transmitter to $receiver”

# Simulate power transfer by updating the energy levels (abstracted)

$ns at [expr $ns now + 0.1] “$receiver set energy_ [expr [$receiver get energy_] + $power_amount]”

puts “Receiver $receiver energy after transfer: [$receiver get energy_]”

}

# Schedule wireless power transfer from Transmitter to Receiver 1 and Receiver 2

$ns at 2.0 “transfer_power $transmitter $receiver1 50”

$ns at 3.0 “transfer_power $transmitter $receiver2 50”

  1. Simulate Communication Between Nodes:
  • Configure communication links among the communication nodes and possibly between the power receivers and the transmitter.

# Create duplex links between communication nodes

$ns duplex-link $comm_node1 $comm_node2 10Mb 10ms DropTail

# Create duplex link between Power Receiver 1 and Communication Node 1

$ns duplex-link $receiver1 $comm_node1 10Mb 10ms DropTail

# Create duplex link between Power Receiver 2 and Communication Node 2

$ns duplex-link $receiver2 $comm_node2 10Mb 10ms DropTail

  1. Implement Data Transmission:
  • To mimic data transmission among the communication nodes, and optionally among power receivers and the transmitter.

# Communication Node 1 sends data to Communication Node 2

set tcp_comm1 [new Agent/TCP]

$ns attach-agent $comm_node1 $tcp_comm1

set tcp_comm2_sink [new Agent/TCPSink]

$ns attach-agent $comm_node2 $tcp_comm2_sink

$ns connect $tcp_comm1 $tcp_comm2_sink

# Start sending data from Communication Node 1

set app_comm1 [new Application/FTP]

$app_comm1 attach-agent $tcp_comm1

$ns at 1.0 “$app_comm1 start”

# Power Receiver 1 sends data to Communication Node 1

set udp_receiver1 [new Agent/UDP]

$ns attach-agent $receiver1 $udp_receiver1

set udp_comm1_sink [new Agent/UDP]

$ns attach-agent $comm_node1 $udp_comm1_sink

$ns connect $udp_receiver1 $udp_comm1_sink

# Start sending data from Power Receiver 1

set app_receiver1 [new Application/Traffic/CBR]

$app_receiver1 set packetSize_ 64

$app_receiver1 set interval_ 0.1

$app_receiver1 attach-agent $udp_receiver1

$ns at 2.0 “$app_receiver1 start”

  1. Implement Power Efficiency Management:
  • Optionally, Execute power efficiency management in which the power transmitter adapts power levels according to the energy needs of the receiver nodes.

# Example procedure to manage power efficiency

proc manage_power_efficiency {transmitter receiver required_power} {

global ns

set current_energy [$receiver get energy_]

if {$current_energy < $required_power} {

set power_to_transfer [expr $required_power – $current_energy]

puts “Receiver $receiver requires $power_to_transfer more power.”

$ns at [expr $ns now + 0.1] “transfer_power $transmitter $receiver $power_to_transfer”

} else {

puts “Receiver $receiver has sufficient energy.”

}

}

# Schedule power efficiency management for Receiver 1

$ns at 4.0 “manage_power_efficiency $transmitter $receiver1 100”

  1. Run the Simulation:
  • Describe when the simulation should end and executed it. The finish procedure will close the trace files and open the NAM for visualization.

# Define the finish procedure

proc finish {} {

global ns tracefile namfile

$ns flush-trace

close $tracefile

close $namfile

exec nam out.nam &

exit 0

}

# Schedule the finish procedure at 10 seconds

$ns at 10.0 “finish”

# Run the simulation

$ns run

  1. Analyse the Results:
  • Use the trace file (out.tr) to evaluate data transmission, power transfer efficiency, and network performance.
  • Open the NAM file (out.nam) to visualize the network operations and track the communication among power transmitters, receivers, and communication nodes.
  1. Customize and Extend:
  • We can customize the simulation by:
    • Attach more power transmitters and receivers to generate a more complex WPT network.
    • Executing more sophisticated power management techniques like dynamic power allocation or adaptive power transfer based on network conditions.
    • To mimic numerous scenarios, like changing distances among the transmitters and receivers, or establishing the obstacles that impacts power transfer efficiency.

Example Summary:

This sample configures a simple Wireless Power Transfer (WPT) network simulation in NS2 that concentrates on power transfer among the nodes, together with communication among nodes. The simulation has involves basic power management to make sure that nodes receive the required energy.

Advanced Considerations:

  • For more complex scenarios, that deliberates to incorporating the NS2 with specialized power management tools or developing custom modules to emulate the cutting-edge WPT techniques, like an energy harvesting, cooperative energy transfer, or multi-hop power transfer.
  • Expand the simulation to contain advanced characteristics such as Quality of Service (QoS) for both power transfer and communication, or secure energy transfer protocols.

Debugging and Optimization:

  • Use the trace-all command to debug the simulation and evaluate packet flows and power levels.
  • Enhance the simulation by decontaminating power transfer techniques, adapting the energy thresholds, and tuning network metrics for better performance and effectiveness.

In this setup, we successfully implemented and executed the wireless power transfer network that we executed in ns2 tool that has generate the network topology then apply the wireless power transfer process and at last execute the results. If you had query regarding process we will clarify it. Boost your network performance with the help of ns2project.com developers. We offer top-notch thesis ideas and topics focused on Wireless Power Transfer Networks using the ns2 tool.