Hi ns-users,
In my script I would want set up the Access Point with 2 interfaces in
2 different channels (chan_a,chan_b), one with the standard 802.11a and
the other second standard 802.11b.
Please, I have need help in order to understand if my configuration is
correct! If isn't, can you give a suggestion to me?
(in my script the configuration of the nodes follows mw-node)
My script:
global val_
set val_(channel) Channel/Wireless ;# channel
set val_(propagation) Propagation/TwoRayGround ;# radio-propagation model
set val_(phy) Phy/WirelessPhy ;# physical layer
set val_(mac) Mac/802_11 ;# mac layer
set val_(ifq) Queue/DropTail/PriQueue ;# interface queue type
set val_(ll) LL ;# link layer type
set val_(antenna) Antenna/OmniAntenna ;# antenna model
set val_(ifqlen) 50 ;# max packet in ifq
set val_(routing) None ;# routing
set val_(nMn) 2
set val_(nAP) 2
set val_(x) 150
set val_(y) 150
set val_(tr) esercizi/out5.tr ;# trace file
set val_(namtr) esercizi/out5.nam ;# nam trace file
set val_(stopTime) 15
set chan_a [new $val_(channel)]
set chan_b [new $val_(channel)]
............
........
$ns_ wireless-config -routing $val_(routing) \
-mac $val_(mac) \
-phy $val_(phy) \
-propagation [new $val_(propagation)] \
-topography $topography_ \
-ll $val_(ll) \
-ifq $val_(ifq) \
-ifq-length $val_(ifqlen) \
-antenna $val_(antenna) \
-xyz-trace on \
-ifq-trace on \
-mac-trace on \
-rtm-trace on \
-eot-trace off
#---portal node
$ns_ node-config -wireless +Portal ;# enable Portal support
for {set i 0} {$i<$val_(nAP)} {incr i} { ;#ACCESS POINT
$ns_ wireless-config -channel $chan_a
set node_AP($i) [$ns_ node 1.[expr $i+1].0]
$node_AP($i) set-position [expr 100.0*$i*$i] 100.0 0.0
set netif_a($i) [$node_AP($i) add-interface "Wireless"] ;# add
wireless interface
##802.11a
set mac_a($i) [new $val_(mac)]
$mac_a($i) set SlotTime_ 0.000050 ;# 50us
$mac_a($i) set SIFS_ 0.000028 ;# 28us
$mac_a($i) set PreambleLength_ 0 ;# no preamble_
$mac_a($i) set PLCPHeaderLength_ 128 ;# 128 bits
$mac_a($i) set PLCPDataRate_ 1.0e6 ;# 1Mbps
$mac_a($i) set dataRate_ 54.0e6 ;# 54Mbps
$mac_a($i) set basicRate_ 1.0e6 ;# 1Mbps
$netif_a($i) set Pr_ 8.9175e-10
$netif_a($i) set Pt_ 0.2818
$netif_a($i) set freq_ 5.0e+9
$netif_a($i) set RXThresh_ 1.60607e-10
$netif_a($i) set CSThresh_ [expr 0.9*[$netif_a($i) set RXThresh_]]
$mac_a($i) netif $netif_a($i)
$ns_ wireless-config -channel $chan_b
set netif_b($i) [$node_AP($i) add-interface "Wireless"] ;# add
wireless interface
##802.11b/g
$netif_b($i) set Pr_ 8.9175e-10
$netif_b($i) set Pt_ 0.007214
$netif_b($i) set freq_ 2.4e+9
$netif_b($i) set RXThresh_ 7.138e-11
$netif_b($i) set CSThresh_ [expr 0.9*[$netif_b($i) set RXThresh_]]
$netif_b($i) set DSSS_CWMin 15
$netif_b($i) set DSSS_CWMax 1023
$netif_b($i) set DSSS_SlotTime 0.000009
$netif_b($i) set DSSS_CCATime 0.000003
$netif_b($i) set DSSS_RxTxTurnaroundTime 0.000002
$netif_b($i) set DSSS_SIFSTime 0.000016
$netif_b($i) set DSSS_PreambleLength 96
$netif_b($i) set DSSS_PLCPHeaderLength 40
$netif_b($i) set DSSS_PLCPDataRate 6.0e6 ;#// 6Mbps
$netif_b($i) set DSSS_MaxPropagationDelay 0.0000005 ;# // 0.5us
set mac_b($i) [new $val_(mac)]
$mac_b($i) set SlotTime_ 0.000020 ;# 20us
$mac_b($i) set SIFS_ 0.000010 ;# 10us
$mac_b($i) set PreambleLength_ 144 ;# 144 bits preamble
$mac_b($i) set PLCPHeaderLength_ 48 ;# 48 bits
$mac_b($i) set PLCPDataRate_ 1.0e6 ;# 1Mbps
$mac_b($i) set dataRate_ 11.0e6 ;# 11Mbps oppure
54Mbps(802.11g)
$mac_b($i) set basicRate_ 1.0e6 ;# 1Mbps
$mac_b($i) netif $netif_b($i)
}
..........
.........
thanks thanks thanks
Elena
