[ns] Fwd: SMAC Collision Handling algorithm
Subject: SMAC Collision Handling algorithm To: ns-users@isi.edu What is the collision handling algorithm applied in ns2 smac code? I can't see exponential back off anywhere. Please help. -- Regards, Sahil Sharma $25: for you a pizza and some beers with friends, for someone might change their lives. Think about it. -- Regards, Sahil Sharma $25: for you a pizza and some beers with friends, for someone might change their lives. Think about it.
[ns] Printing wrong/absurd values of Contention Window.
Hi all, I have put in print statement to print the contention window of every packet. I am getting absurd output in the console now. I have added the following statement: printf(adaptiveListen's cw is %f\n, rTime); The output is like: adaptiveListen's cw is 29414984 adaptiveListen's cw is 218418282 adaptiveListen's cw is 967854922 adaptiveListen's cw is 1902233440 adaptiveListen's cw is 1885731528 adaptiveListen's cw is -990867736 adaptiveListen's cw is -2029011640 While I have checked in ns-default.tcl that: Mac/802_11 set CWMin_ 31 Mac/802_11 set CWMax_ 1023 So, the values must be b/w these two ranges. Can anyone explain me the reason for the absurd output and how it can be rectified?? -- Regards, Sahil Sharma $25: for you a pizza and some beers with friends, for someone might change their lives. Think about it.
[ns] debugging by printf statement
Hi, I have made the changes to 802_11.cc and added printf statements to it (I have hereby attached a copy of the file). If you want to look for the changes I have done, you may search for [[[ printf(adaptiveListen's cw is %d\n, rTime) ]. But I do not see any such statement in the trace file produced. Where can I get to see this printed output. Please help. -- Regards, Sahil Sharma $25: for you a pizza and some beers with friends, for someone might change their lives. Think about it.
[ns] contention window trace for every packet: where it is?
Hi, I want to know where can I get info about contention window of pkt transmission i.e if I run wireless scenario where node1 sends 100 packets to node2. Then, i want to know what is exact cw (i.e it must be between 0-31 or exponentially like that due to BEB algorithm) for each of 100 packet sent. This was really easy to do in glomosim. -- Regards, Sahil Sharma $25: for you a pizza and some beers with friends, for someone might change their lives. Think about it.
[ns] Awk script to calculate energy-left, thruput, delay of every node
Hi, I have a simple wireless scenario and I want to calculate throughput, delay and energy consumption of every node in this scenario. How can I do this? Is there any official/documented awk script for this? -- Regards, Sahil Sharma $25: for you a pizza and some beers with friends, for someone might change their lives. Think about it.
Re: [ns] Problem in mark greig's wireless1.tcl
Hi,
Thanks for the reply. It worked for me.The tcl script wireless1.tcl is
working perfectly now.
I have one more problem, in tutorial its written Running wireless1-out.nam
we see the three mobilenodes moving in nam window.
I see that wireless1-out.nam have been created in the directory but have no
idea how to run it. What is the exact command to run .nam file.
On Sun, Apr 14, 2013 at 2:40 PM, Guanglou Zheng zhengguang...@gmail.comwrote:
Hi Sahil
I think, you may need to run the wireless1.tcl in the directory of tcl/ex
.
Regards,
Gordon
-Original Message-
From: ns-users-boun...@isi.edu [mailto:ns-users-boun...@isi.edu] On Behalf
Of Sahil Sharma
Sent: Sunday, 14 April 2013 8:45 AM
To: ns-users@ISI.EDU
Subject: [ns] Problem in mark greig's wireless1.tcl
Hi,
I am getting this problem when running wireless1.tcl in mark greig's
tutorials.
praving@ubuntu:~/Downloads$ ns wireless1.tcl num_nodes is set 3
warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl
INITIALIZE
THE LIST xListHead Loading connection pattern. couldn't read file
../mobility/scene/cbr-3-test: no such file or directory while executing
source.orig ../mobility/scene/cbr-3-test
(uplevel body line 1)
invoked from within
uplevel source.orig [list $fileName]
invoked from within
if [$instance_ is_http_url $fileName] { set buffer [$instance_ read_url
$fileName] uplevel eval $buffer } else { uplevel source.orig [list
$fileName] .
(procedure source line 8)
invoked from within
source $val(cp)
(file wireless1.tcl line 88)
praving@ubuntu:~/Downloads$ tcl/ex/wireless-mitf.tcl
bash: tcl/ex/wireless-mitf.tcl: No such file or directory
How can I remove this. Please help.
--
Regards,
Sahil Sharma
$25: for you a pizza and some beers with friends, for someone might change
their lives. Think about it.
--
Regards,
Sahil Sharma
$25: for you a pizza and some beers with friends, for someone might change
their lives. Think about it.
[ns] Add data to node
Hi, I want to add an int data[ranging 0-7] associated with every node. How and in which file I need to make the changes? To be specific, I need to use this data in MaC layer for contending in the medium i.e in contention window. -- Regards, Sahil Sharma $25: for you a pizza and some beers with friends, for someone might change their lives. Think about it.
[ns] Trace: Basics
How can I open the trace file? Where and how can I check the throughput, delay etc. of the nodes? -- Regards, Sahil Sharma $25: for you a pizza and some beers with friends, for someone might change their lives. Think about it.
[ns] Problem in mark greig's wireless1.tcl
Hi,
I am getting this problem when running wireless1.tcl in mark greig's
tutorials.
praving@ubuntu:~/Downloads$ ns wireless1.tcl
num_nodes is set 3
warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl
INITIALIZE THE LIST xListHead
Loading connection pattern…
couldn’t read file “../mobility/scene/cbr-3-test”: no such file or directory
while executing
“source.orig ../mobility/scene/cbr-3-test”
(“uplevel” body line 1)
invoked from within
“uplevel source.orig [list $fileName]”
invoked from within
“if [$instance_ is_http_url $fileName] {
set buffer [$instance_ read_url $fileName]
uplevel eval $buffer
} else {
uplevel source.orig [list $fileName]
…”
(procedure “source” line 8)
invoked from within
“source $val(cp)”
(file “wireless1.tcl” line 88)
praving@ubuntu:~/Downloads$ tcl/ex/wireless-mitf.tcl
bash: tcl/ex/wireless-mitf.tcl: No such file or directory
How can I remove this. Please help.
--
Regards,
Sahil Sharma
$25: for you a pizza and some beers with friends, for someone might change
their lives. Think about it.
