[ns] Fwd: Algorithm or Code to implement LT codes
-- Forwarded message -- From: yugesh gowda Date: Sun, Apr 17, 2011 at 1:26 PM Subject: Fwd: Algorithm or Code to implement LT codes To: ns-users@isi.edu -- Forwarded message -- From: yugesh gowda Date: Sat, Apr 9, 2011 at 11:34 AM Subject: Algorithm or Code to implement LT codes To: ns-users@isi.edu Hello If Anybody have c/c++/tcl code to implement LT codes in NS2.. Please help me.. Urgent.. My Email id: yugeshgo...@gmail.com
[ns] Fwd: Rateless Forward Error Correction for Topology-Transparent Scheduling
-- Forwarded message -- From: yugesh gowda Date: Tue, Apr 19, 2011 at 9:43 AM Subject: Rateless Forward Error Correction for Topology-Transparent Scheduling To: ns-users@isi.edu Hi i am doing project on above topic mentioned in subject line.. I have attached the pdf for reference.. Using NS2 v need to simulate the project..If anybody completed this project or anyone willing to help please send info to ma emailid. Urgent.. Email id: yugeshgo...@gmail.com
[ns] Rateless Forward Error Correction for Topology-Transparent Scheduling
Hi i am doing project on above topic mentioned in subject line.. I have attached the pdf for reference.. Using NS2 v need to simulate the project..If anybody completed this project or anyone willing to help please send info to ma emailid. Urgent.. Email id: yugeshgo...@gmail.com
[ns] NS-2 2.34 DSR SHOWING HIGH END TO END DELAY
HI, *I am simulating DSR protocol in ns2- 2.34 , the parameters Iam using are :* * * *No of nodes : 50* *Topology : 500 *500* * traffic : cbr/tcp* * pause time : various * * simulation time : 300 sec.* * * *the performance metric I tested is, max simulation end to end delay which gives me 80 seconds on average whatever be the mobility involved, and every node is dropping packets. Is this some kind of error? I am attaching a out put graph for you to look at.* * * * note : the same parameters in a smaller topology area are giving only 0.15 to 1 sec end to end delay .* * Why is this extreme behaviour recorded is this some error in code? any help is appreciated.* * * * * * * *thanks and regards,* *teja chintalapudi * * * * * * * * * * * * * * * * * * * * *
[ns] beacon transmission in 802.11Ext
hi does the implementation of the mac extension (mac 802_11Ext) support a beacon transmission? Can a base station transmit a periodic beacon? thanks for your help best regards,
[ns] How to emulate/simulate a wireless network with real nodes at the end?
Hi there, I was wondering if it was possible to have real nodes, as in real computers acting as nodes in the ns-2? I mean, i want to test my mobile tv service over varying networking conditions, so was wondering how to set up the entire thing. Is there a way in ns-2 to implement this thing? I am using Wowza servers to generate streams for the service, and wish to check them out. Thanks. -- Prashant Pathak http://sing0d.deviantart.com
[ns] urgent: creating a handover scenario between two base station
hi
I'm currently working on my final
project in which i should create a node moving from one base station to
another.
I have a problem in creating the handover between two base station.
My topology is as follows:
-
| Wired |
| Node |
| w(0) |
-
|
|
-
| Wired |
| Node |
w(1)
-
|
|
_|_
| |
------
| BS0 || BS1 |
------
-
|MobileNode0|
-
my tcl script is the following:
#802.11p default parameters
Phy/WirelessPhyExt set CSThresh_3.162e-12 ;#-85 dBm Wireless
interface sensitivity (sensitivity defined in the standard)
Phy/WirelessPhyExt set Pt_ 0.001
Phy/WirelessPhyExt set freq_5.9e+9
Phy/WirelessPhyExt set noise_floor_ 1.26e-13;#-99 dBm for 10MHz
bandwidth
Phy/WirelessPhyExt set L_ 1.0 ;#default radio
circuit gain/loss
Phy/WirelessPhyExt set PowerMonitorThresh_ 6.310e-14 ;#-102dBm power
monitor sensitivity
Phy/WirelessPhyExt set HeaderDuration_ 0.40;#40 us
Phy/WirelessPhyExt set BasicModulationScheme_ 0
Phy/WirelessPhyExt set PreambleCaptureSwitch_ 1
Phy/WirelessPhyExt set DataCaptureSwitch_ 0
Phy/WirelessPhyExt set SINR_PreambleCapture_2.5118; ;# 4 dB
Phy/WirelessPhyExt set SINR_DataCapture_100.0; ;# 10 dB
Phy/WirelessPhyExt set trace_dist_ 1e6 ;# PHY trace until
distance of 1 Mio. km ("infinty")
Phy/WirelessPhyExt set PHY_DBG_ 0
Mac/802_11Ext set CWMin_15
Mac/802_11Ext set CWMax_1023
Mac/802_11Ext set SlotTime_ 0.13
Mac/802_11Ext set SIFS_ 0.32
Mac/802_11Ext set ShortRetryLimit_ 7
Mac/802_11Ext set LongRetryLimit_ 4
Mac/802_11Ext set HeaderDuration_ 0.40
Mac/802_11Ext set SymbolDuration_ 0.08
Mac/802_11Ext set BasicModulationScheme_0
Mac/802_11Ext set use_802_11a_flag_ true
Mac/802_11Ext set RTSThreshold_ 2346
Mac/802_11Ext set MAC_DBG 0
#=
#configure RF model parameters
Antenna/OmniAntenna set Gt_ 1.0
Antenna/OmniAntenna set Gr_ 1.0
Propagation/Nakagami set use_nakagami_dist_ false
Propagation/Nakagami set gamma0_ 2.0
Propagation/Nakagami set gamma1_ 2.0
Propagation/Nakagami set gamma2_ 2.0
Propagation/Nakagami set d0_gamma_ 200
Propagation/Nakagami set d1_gamma_ 500
Propagation/Nakagami set m0_ 1.0
Propagation/Nakagami set m1_ 1.0
Propagation/Nakagami set m2_ 1.0
Propagation/Nakagami set d0_m_ 80
Propagation/Nakagami set d1_m_ 200
#===
set val(chan) Channel/WirelessChannel
set val(prop) Propagation/TwoRayGround
set val(netif) Phy/WirelessPhyExt
set val(mac)Mac/802_11Ext
set val(ifq)Queue/DropTail/PriQueue
set val(ll) LL
set val(ant)Antenna/OmniAntenna
set val(x) 700 ;# X dimension of the topography
set val(y) 600 ;# Y dimension of the topography
set val(ifqlen) 50 ;# max packet in ifq
set val(nn) 1 ;# how many Mobile nodes are simulated
set val(rp) DSDV
set val(stop) 250 ;# simulation time
set num_wired_nodes 2
set num_bs_nodes 2
# =
set ns [new Simulator]
# set up for hierarchical routing
$ns node-config -addressType hierarchical
AddrParams set domain_num_ 3 ;# number of domains
lappend cluster_num 2 1 1;# number of clusters in
each domain
AddrParams set cluster_num_ $cluster_num
lappend eilastlevel 1 1 2 1 ;# number of nodes in each
cluster for each domain
AddrParams set nodes_num_ $eilastlevel
set tracefd [open trace.tr w]
set namtrace [open out.nam w]
$ns trace-all $tracefd
$ns namtrace-all-wireless $namtrace $val(x) $val(y)
$ns namtrace-all $namtrace
# set up topography object
set topo
[ns] Modifying the "cmu-trace.cc" to integrate the GPSR protocol
Hi friends, I need to integrate the GPSR protocol into the NS module.I made the needed changes but I have problem with the cmu-trace.cc file . I couldn't develop the void "CMUTrace::format_gpsr(Packet *p, int offset)". Any one can help me or just send to me the concerned modified part. Thank you and good luck . ZAKIA
[ns] TCL Code
* QOS-A Novel Multipath Routing* *Algorithem Protocol For Ad Hoc Networks* Algorithm QAMRouting() 1. Create nodes by allocating bandwidth randomly. 2. Set transmission range of each and every node i . 3. Initialize cache tables with their range nodes and initially allocated bandwidth. 4. Select destination from source node i. 5. Flood RREQ(SrcID,ReqID,DestId,QoS,Nutilization) to all neighbor nodes of node i 1. For each node j do Calculate available bandwidth of node j If(RREQ.QoS >AvailableBW of node j) Descard the RREQ Else If(node j is equal to RREQ.Destid) Send RREP to source node i Goto 8. Else callWait(0.1) //allow many/all the RREQ’s to reach the node j If more then one RREQ’s which has same *SrcID & ReqID* , Chose the RREQ which has the least Nutilization Calculate node j’s Nutilization If(RREQ.Nutilization>Nutilization of node j) RREQ.Nutilization Nutilization of node j //Update RREQ // Record the route in the cache j table Append node j in the “path” string and update cache j 1. Goto step 5 2. Send RREP to the Source 3. Start Communication Send data from source to destination through the reliable path computed earlier. Anybody please provide the tcl scripting code for the above mentioned algorithm . I tried a lot but my script isn't providing the decided result. so, please do provide the tcl code Thanking you Regards Rajeev N B
[ns] smac simulation problem
Below is my tcl script for smac simulation.
I'm having a problem were my trace file is showing that the sending node is
the one receiving that data again at the same time.
So if anyone can help me find were I went wrong on my tcl code.
set val(chan)Channel/WirelessChannel;
set val(prop)Propagation/TwoRayGround;
set val(netif)Phy/WirelessPhy;
set val(mac)Mac/802_11 ;# MAC type
#set val(mac)Mac/SMAC ;# MAC type
set val(ifq)Queue/DropTail/PriQueue;
set val(ll)LL;
set val(ant)Antenna/OmniAntenna;
set val(x)800;# X dimension of the topography
set val(y)800;# Y dimension of the topography
set val(ifqlen)50;# max packet in ifq
set val(nn) 4 ;# number of nodes
set val(seed)0.0
set val(stop)700.0;# simulation time
set val(tr)try.tr ;# trace file
set val(nam)try.nam ;# animation file
set val(rp)AODV ;# routing protocol script
set val(lm) "on" ;# log movement
#set val(agent) Agent/DSDV;
set val(energymodel)EnergyModel ;
set val(radiomodel)RadioModel ;
set val(initialenergy) 1000;# Initial energy in Joules
set val(logenergy) "on" ;# log energy every 150 seconds
Mac/SMAC set syncFlag_ 1
Mac/SMAC set dutyCycle_ 10
set ns_ [new Simulator]
set prop[new $val(prop)]
set topo[new Topography]
$topo load_flatgrid $val(x) $val(y)
#ns-random 1.0
#
# Create god
#
set god_ [create-god $val(nn)]
#global node setting
$ns_ node-config -adhocRouting AODV \
-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 ON \
-movementTrace ON \
-energyModel
$val(energymodel) \
-idlePower 1.0 \
-rxPower 1.0 \
-txPower 1.0 \
-sleepPower 0.001 \
-transitionPower 0.2 \
-transitionTime 0.005 \
-initialEnergy $val(initialenergy)
$ns_ set WirelessNewTrace_ ON
set tracefd[open $val(tr) w]
$ns_ trace-all $tracefd
set namtracefd[open $val(nam) w]
$ns_ namtrace-all-wireless $namtracefd 500 500
puts " node for simulation creation..."
#Create the specified number of nodes [$val(nn)] and "attach" them to the
channel.
# for {set i 0} {$i < $val(nn) } {incr i} {
# set node_($i) [$ns_ node]
# $node_($i) random-motion 0;# disable random motion
# }
$ns_ node-config -adhocRouting AODV
set node_(0) [$ns_ node]
$ns_ at 0.0 " $node_(0) label \"sending node\""
puts " node creation has finished..."
puts "Creation of AODV nodes starts..."
$ns_ node-config -adhocRouting AODV
set node_(1) [$ns_ node]
$ns_ at 0.0 " $node_(0) label \"Sending Node\""
$ns_ at 0.0 " $node_(1) label \"Receiving Node\""
set node_(2) [$ns_ node]
set node_(3) [$ns_ node]
#set node_(2) [$ns_ node]
#set node_(3) [$ns_ node]
#set node_(4) [$ns_ node]
#set node_(5) [$ns_ node]
#$ns_ at 0.0 " $node_(5) label \"Receiving Node\""
#set node_(6) [$ns_ node]
puts "Creation of AODV nodes finished..."
$node_(0) set X_ 10.0
$node_(0) set Y_ 5.0
$node_(0) set Z_ 3.0
$node_(1) set X_ 70.0
$node_(1) set Y_ 40.0
$node_(1) set Z_ 50.0
$node_(2) set X_ 100.0
$node_(2) set Y_ 30.0
$node_(2) set Z_ 40.0
$node_(3) set X_ 250.0
$node_(3) set Y_ 270.0
$node_(3) set Z_ 0.0
# Generation of movements
$ns_ at 10.0 "$node_(1) setdest 250.0 250.0 3.0"
$ns_ at 15.0 "$node_(0) setdest 45.0 285.0 5.0"
#$ns_ at 45.0 "$node_(1) setdest 300.0 300.0 5.0"
$ns_ at 10.0 "$node_(2) setdest 160.0 160.0 3.0"
$ns_ at 15.0 "$node_(3) setdest 100.0 200.0 3.0"
$ns_ at 40.642 "$god_ set-dist 23 46 2"
set udp_(0) [new Agent/UDP]
set null_(0) [new Agent/Null]
$ns_ attach-agent $node_(0) $udp_(0)
$ns_ attach-agent $node_(1) $null_(0)
set cbr_(0) [new Application/Traffic/CBR]
$cbr_(0) set packetSize_ 512
$cbr_(0) set interval_ 0.25
$cbr_(0) set random_ 1
$cbr_(0) set maxpkts_ 1
$cbr_(0) attach-agent $udp_(0)
$ns_ connect $
[ns] changing packets size sent in TCP
dear friends, my project title is TCP PERFORMANCE OVER WIRELESS MIMO CHANNELS WITH ARQ in which i have created two nodes and attached TCP agents to those nodes. can we apply CBR to those tcp agents or what should i apply. by default in the trace file,the number of packet send is showing 40. how can i change itpls replycan we use ftp instead of CBR.pls give response. -- View this message in context: http://old.nabble.com/changing-packets-size-sent-in-TCP-tp31385507p31385507.html Sent from the ns-users mailing list archive at Nabble.com.
