[ns] R: Re: 802.11g - doubt in ns-2.29

Marco Fiore fl0wer at virgilio.it
Mon Jan 23 03:45:07 PST 2006


Tamara,

it seems strange to me that changing only datarate and 802.11 
parameters can cause
the simulation to stop. Does your code works with 
standard 802.11 configuration?
Did you change anything else?

Regards,

Marco Fiore

----Messaggio originale----
Da: tamararosini at gmail.com
Data: 23-gen-2006 12.16 PM
A: "Marco Fiore"<fl0wer at virgilio.it>
Cc: <ns-
users at isi.edu>
Ogg: Re: [ns] 802.11g - doubt in ns-2.29

Hi,

 Actually 
i had two problems, at first appeared this message "Scheduler::
Event 
UID not valid!", I found an answer about this error in this website
http://web.syr.edu/~dchen02/FAQ.txt
<http://web.syr.edu/%7Edchen02/FAQ.
txt>and the tcl configuration for
802.11g. Later the changes in tcl 
code my computer just stopped ( I had
close the shell) , i tried to 
process the code in another machine but the
same result was seen.

ps: 
my cbr protocol is UDP

Thank's in  advance
Tamara Rosini


2006/1/23, 
Marco Fiore <fl0wer at virgilio.it>:
>
> Tamara,
>
> what do you mean by 
"did not work"?
> Did you get error
> messages, or unexpected
> 
results?
>
> Regards,
>
> Marco Fiore
>
>
> ----Original
> Message----
> From: tamararosini at gmail.com
> Date: Jan 23, 2006 2:36 AM
> To:
> <ns-
users at ISI.EDU>
> Subj: [ns] 802.11g - doubt in ns-2.29
>
>
> Hi all!
>
> *
>
> I'm doing a kind of project in ns-2.29 wired cum wireless with 
802.11g.
> Everything is working fine, but i couldn't make it work with 
a datarate
> of
> 54mb and a cbr of 54mb. Do you have any idea what is 
happening? May
> I change
> something in C++ code to make it work? Or 
just configure some
> parameters in
> tcl code?
> I would be really 
glad if you help me.
>
> there
> are some things that i tried, but 
didn't work out.*
>
> Mac/802_11 *set*
> CWMin                    15
> 
Mac/802_11 *set* CWMax
> 1023
> Mac/802_11 *set* 
SlotTime_                0.000009
> Mac/802_11
> *set* 
CCATime_                 0.000003
> Mac/802_11 *set*
> 
RxTxTurnaroundTime_      0.000002
> Mac/802_11 *set*
> 
SIFS_                    0.000016
> Mac/802_11 *set*
> 
PreambleLength_          96
> Mac/802_11 *set* PLCPHeaderLength_
> 40
> 
Mac/802_11 *set* PLCPDataRate_            6.0e6
> *#define
> 
DSSS_MaxPropagationDelay        0.0000005       // 0.5us*
>
> *this is 
the
> topology of my network *
> *# w(0)   w(1)  *
> *#  \      |     *
> *#
> \     |  *
> *#     \   |  *
> *#      \  |  *
> *#       \ |   
*
> *#
> \|  *
> *#        w(2)*
> *#         |*
> *#         |*
> 
*#         BS*
> *#        /|*
> *#       / |   *
> *#      /  | *
> 
*#     /   | *
> *#    /
> | *
> *#  /      |  *
> *# n(0)   n(1) *
> 
*#*
> *# w(i): Wired nodes*
> *# BS:
> base station*
> *# n(i): 
Wireless nodes
>
> Thank's in advance
> Tamara Rosini
> *
>
>
>
>





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