Setting Energy Model for Mobile Nodes.

Description:

Number of nodes (4) is fixed in the program. Nodes are configured with specific parameters of a mobile wireless node. Here we use the energy model for each node with -initialEnergy 20 \ -txPower 0.9 \-rxPower 0.8 \-idlePower 0.0 \ -sensePower 0.0175. After creating the nam file and trace file, we set up topography object. set node_ ($i) [$ns node] is used to create the nodes. Initial location of the nodes is fixed. Specific X, Y coordinates are assigned to every node. Nodes are given mobility with fixed speed and random destination location. Here we set the initial size for the every node by using initial_node_pos. DSR routing protocol is used here. $val(stop) specifies the end time of the simulation

File name: “wireless1.tcl”

## Setting The wireless Channels..

set val(chan)           Channel/WirelessChannel    ;# channel type
set val(prop)           Propagation/TwoRayGround   ;# radio-propagation model
set val(netif)          Phy/WirelessPhy            ;# network interface type
set val(mac)            Mac/802_11                 ;# MAC type
set val(ifq)            Queue/DropTail/PriQueue    ;# interface queue type
set val(ll)             LL                         ;# link layer type
set val(ant)            Antenna/OmniAntenna        ;# antenna model
set val(ifqlen)         5                          ;# max packet in ifq
set val(nn)             6                           ;# number of mobilenodes
set val(rp)             DSR                        ;# routing protocol
set val(x)              750                        ;# X dimension of topography
set val(y)              550                        ;# Y dimension of topography
set val(stop)         18.0                     ;# time of simulation end

## Create a simulator object(nothing but, a scheduler's object)..
set ns [new Simulator]

## Create a trace file and nam file..
set tracefd [open wireless1.tr w]
set namtrace [open wireless1.nam w]

## Trace the nam and trace details from the main simulation..
$ns trace-all $tracefd
$ns namtrace-all-wireless $namtrace $val(x) $val(y)

## set up topography object..
set topo [new Topography]

$topo load_flatgrid $val(x) $val(y)

set god_ [create-god $val(nn)]

## Color Descriptions..
      $ns color 1 dodgerblue
      $ns color 2 blue
      $ns color 3 cyan
      $ns color 4 green
      $ns color 5 yellow
      $ns color 6 black
      $ns color 7 magenta
      $ns color 8 gold
      $ns color 9 red

# Setting The Distance Variables..
# For model 'TwoRayGround'
      set dist(5m) 7.69113e-06
      set dist(9m) 2.37381e-06
      set dist(10m) 1.92278e-06
      set dist(11m) 1.58908e-06
      set dist(12m) 1.33527e-06
      set dist(13m) 1.13774e-06
      set dist(14m) 9.81011e-07
      set dist(15m) 8.54570e-07
      set dist(16m) 7.51087e-07
      set dist(20m) 4.80696e-07
      set dist(25m) 3.07645e-07
      set dist(30m) 2.13643e-07
      set dist(35m) 1.56962e-07
      set dist(40m) 1.56962e-10
      set dist(45m) 1.56962e-11
      set dist(50m) 1.20174e-13
      #Phy/WirelessPhy set CSThresh_ $dist(50m)
      #Phy/WirelessPhy set RXThresh_ $dist(50m)

## Setting node config event with set of inputs..
      puts "Node Configuration Started here...\n \
                  -channel $val(chan) \n \
                  -adhocRouting $val(rp) \n \
                  -llType $val(ll) \n \
                  -macType $val(mac) \n \
                  -ifqType $val(ifq) \n \
                  -ifqLen $val(ifqlen) \n \
                  -antType $val(ant) \n \
                  -propType $val(prop) \n \
                  -phyType $val(netif) \n"

        $ns node-config -adhocRouting $val(rp) \
                  -llType $val(ll) \
                  -macType $val(mac) \
                  -ifqType $val(ifq) \
                  -ifqLen $val(ifqlen) \
                  -antType $val(ant) \
                  -propType $val(prop) \
                  -phyType $val(netif) \
                  -channelType $val(chan) \
                  -topoInstance $topo \
                  -agentTrace ON \
                  -routerTrace ON \
                  -macTrace OFF \
                  -movementTrace ON
# Energy model
      $ns node-config -energyModel EnergyModel \
                        -initialEnergy 20 \
                        -txPower 0.9 \
                        -rxPower 0.8 \
                        -idlePower 0.0 \
                        -sensePower 0.0175

## Creating node objects..
      for {set i 0} {$i < $val(nn) } { incr i } {
            set node_($i) [$ns node]
      }

for {set i 0} {$i < $val(nn)} {incr i} {
      $node_($i) color darkgreen
      $ns at 0.0 "$node_($i) color darkgreen"
      }

## Provide initial location of mobilenodes..

      if {$val(nn) >0} {
            for {set i 1} {$i < $val(nn) } { incr i } {
                  set xx [expr rand()*600]
                  set yy [expr rand()*500];
                  $node_($i) set X_ $xx
                  $node_($i) set Y_ $yy
            }
      }

## set god distance..
      $god_ set-dist 0 1 2
      $god_ set-dist 0 2 2
      $god_ set-dist 0 3 2
      $god_ set-dist 0 4 1
      $god_ set-dist 0 5 2
      $god_ set-dist 1 2 3
      $god_ set-dist 1 3 3

## Define node initial position in nam..
      for {set i 0} {$i < $val(nn)} { incr i } {
      # 30 defines the node size for nam..
            $ns initial_node_pos $node_($i) 30
      }

## Telling nodes when the simulation ends..
for {set i 0} {$i < $val(nn) } { incr i } {
$ns at $val(stop) "$node_($i) reset";
}

## Ending nam and the simulation..
$ns at $val(stop) "$ns nam-end-wireless $val(stop)"
$ns at $val(stop) "stop"
$ns at 16.01 "puts \"end simulation\" " ;# $ns halt

## Stop procedure..

proc stop {} {
    global ns tracefd namtrace
    $ns flush-trace
    close $tracefd
    close $namtrace

exec nam wireless1.nam &
exit 0
}

$ns run

#how to run this program...

$ns wireless1.tcl

# snapshot of the program: