Transmission Range

the command “$ns_ node-config” can be used to set the parameters of a node during node creation. (-txPower , -rxPower will decide the transmission range and coverage)

$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 

-wiredRouting OFF 

-agentTrace ON 

-routerTrace ON 

-macTrace ON 

-energyModel $val(engmodel) 

-initialEnergy $val(initeng) 

-txPower  $val(txPower) 

-rxPower  $val(rxPower) 

-idlePower  $val(idlePower)

if you create a node after this configuration, then it will create the node with that default parameter.

set node_($i) [$ns_ node]

After creating a node, if you want to create another node or another set of nodes with different parameters, then again use the same command “$ns_ node-config” with different parameters and then use “set node_($i) [$ns_ node]”
($i will differ and denote a node)