Coverage hole in Wireless Sensor Network (WSN) denotes the area which is uncovered by the sensors in the region of interest in entire network area. In file coverage_hole.tcl, the hole is created in center area of the network and each sensor is having the sensing range of 12m and communication range of 24m.
Filename: coverage_hole.tcl
# Initialize the SharedMedia interface with parameters to make
# it work like the 914MHz Lucent WaveLAN DSSS radio interface
Phy/WirelessPhy set CPThresh_ 10.0
Phy/WirelessPhy set CSThresh_ 1.33527e-06 ;#12m
Phy/WirelessPhy set RXThresh_ 3.33816e-07 ;#24m
Phy/WirelessPhy set Rb_ 2*1e6
Phy/WirelessPhy set Pt_ 0.2818
Phy/WirelessPhy set freq_ 914e+6
Phy/WirelessPhy set L_ 1.0
#configure the nodes
$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) \
-topoInstance $topo \
-channel $chan_1_ \
-agentTrace ON \
-routerTrace ON \
-macTrace OFF \
-movementTrace ON \
for {set i 0} {$i < $val(nn)} { incr i }
{
set node_($i) [$ns node]
}
