Hi all, is there anybody that knows about the fast scheduling in EURANE? I
got a ploblem when i run a simulation using MAX C/I and FCDS.The simulation
is run well when the UEs is 5,but when i increase the number of UEs to
10,the problem is come out ,simulation is stop and print:"couldn't schedule
timer"
Anybody who knows why?? Please help me !
thanx in advance,waiting for ur reply....
this is the tcl script:i run it under ns-2.26 + cygwin+eurane1.09
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global ns
set ns [new Simulator]
set f [open out.tr w]
proc finish {} {
global ns
global f
$ns flush-trace
close $f
puts " Simulation ended."
exit 0
}
$ns set debug_ 0
$ns set hsdschEnabled_ 1
$ns set hsdsch_rlc_set_ 0
$ns set hsdsch_rlc_nif_ 0
Mac/Hsdpa set scheduler_type_ 3
Mac/Hsdpa set alpha_ 0.999
$ns node-config -UmtsNodeType rnc
set rnc [$ns create-Umtsnode]
$ns node-config -UmtsNodeType bs \
-downlinkBW 32kbs \
-downlinkTTI 10ms \
-uplinkBW 32kbs \
-uplinkTTI 10ms \
-hs_downlinkTTI 2ms \
-hs_downlinkBW 64kbs \
set bs [$ns create-Umtsnode]
$ns setup-Iub $bs $rnc 622Mbit 622Mbit 15ms 15ms DummyDropTail 2000
$ns node-config -UmtsNodeType ue \
-baseStation $bs \
-radioNetworkController $rnc
for { set i 1 } { $i < 11 } { incr i 1 } {
set ue($i) [$ns create-Umtsnode]
}
set sgsn0 [$ns node]
set ggsn0 [$ns node]
set node1 [$ns node]
set node2 [$ns node]
$ns duplex-link $rnc $sgsn0 622Mbit 0.4ms DropTail 1000
$ns duplex-link $sgsn0 $ggsn0 622MBit 10ms DropTail 1000
$ns duplex-link $ggsn0 $node1 10MBit 15ms DropTail 1000
$ns duplex-link $node1 $node2 10MBit 35ms DropTail 1000
$rnc add-gateway $sgsn0
for { set i 1 } { $i < 11 } { incr i 1 } {
set k [expr $i - 1]
set tcp($i) [new Agent/TCP]
$tcp($i) set windowInit_ 10
$tcp($i) set window_ 16
$tcp($i) set packetSize_ 1024
$tcp($i) set fid_ $k
$tcp($i) set prio_ 2
$ns attach-agent $node2 $tcp($i)
set sink($i) [new Agent/TCPSink]
$ns attach-agent $ue($i) $sink($i)
$ns connect $tcp($i) $sink($i)
}
for { set i 1 } { $i < 11 } { incr i 1 } {
set ftp($i) [new Application/FTP]
$ftp($i) attach-agent $tcp($i)
}
$ns node-config -llType UMTS/RLC/AM \
-downlinkBW 64kbs \
-uplinkBW 64kbs \
-downlinkTTI 20ms \
-uplinkTTI 20ms \
-hs_downlinkTTI 2ms \
-hs_downlinkBW 64kbs
$ns create-hsdsch $ue(1) $sink(1)
for { set i 2 } { $i < 11 } { incr i 1 } {
$ns attach-hsdsch $ue($i) $sink($i)
}
for { set i 1 } { $i < 11 } { incr i 1 } {
set k [expr $i - 1]
$bs setErrorTrace $k "UE[expr $i]_trace_file"
}
$bs loadSnrBlerMatrix "SNRBLERMatrix"
for { set i 1 } { $i < 11 } { incr i 1 } {
$ue($i) trace-inlink-tcp $f 2
}
for { set i 1 } { $i < 11 } { incr i 1 } {
$ns at 0.0 "$ftp($i) start"
}
for { set i 1 } { $i < 11 } { incr i 1 } {
$ns at 100.0 "$ftp($i) stop"
}
$ns at 100.401 "finish"
puts " Simulation is running ... please wait ..."
$ns run
