Re: [ns] Walls and structure in ns-2

Hello Is there some way to activate multiple channels for 802.11? e.g. two single hop networks operating nearby to each other will impact each other's performance, or even a microwave oven can be considered to be one of the channel, and it will interfere with some nodes nearby. How can we get the

Re: [ns] Regarding txtime() in mac-802_11: Why PHY and MAC both data rates are used in txtime calculation?

I think its the MAC rate(s) used for calculating the Tx time of a packet. Yes the header is sent at basic rate always, to overcome the sync issue at all. Well for PHY, I think it should only be related for PHY calculations as per the modulation used. So different PHY rates enable different MAC ra

[ns] regarding 802.11e

hello 802.11e experts Could somebody shed some light as why getting some help on TKN EDCA 802.11e is almost not possible over this list. Would somebody kindly give some pointers about the following issues: 1. new trace format does not contain the time stamp for EDCA. Is it due to the lack of imp

[ns] throughput in errors

hi all I am trying to get the lowered throughput of WLAN at MAC level, under error model with rate set to 10%, and unit is bit.. I see no impact of errors on throughput... plz guide urgently best b

[ns] set and get the parameter values of EDCA of a node

Dear all NS/ers Could somebody help me in a terrible situation, for which i am not getting any help. I am using ns 2.31 and TKN EDCA patch for 802.11e. I need to set and get the priority queues of 802.11e based node, for different parameters such as AIFS (per node per queue). I am not very famil

[ns] changing PF

hello could some body help me. I am running the code: set q [new Queue/DTail/PriQ] $q set Prio 0 PF 2 puts "one [$q set Prio]" puts "two [$q set Prio 0 PF_]" and expect the output of two to be: two 2, but it gives 0. could u plz point out where I am doing the mistake? thanks many b

[ns] ACK and no. of retransmissions

hello all I want to draw a graph of Reliability and No. of retransmissions...packets can be lost, and then retransmitted...a packet is considered delivered when finally its ACK is received. How can we relate the ACK packets with the No. of retransmissions which occured for a particular packet...

[ns] refreshing the QoS parameters in WLAN

Dear all my question is regarding NS-2.31 and TU Berlin EDCA for 802.11e. There is one file priority.tcl in it. If we change the values of some of QoS parameters in it, then we need to re make NS. Is there some way that we can change them while the simulation is running, and the change is propaga

[ns] Does Akaroa provide controls

Dear All I am trying to do some NS2 simulations for EDCA (IEEE 80-2.11e). Do you have some TCL scripts for throughput, reliability, delay etc... Also how can we control running of the EDCA using AKAROA...any tutorial on AKAROA? I am in urgent need please. thanks basim

[ns] wireless errors

dear all while using the error model in WLAN, how can one know that an error has actually occured at a particular time. Is there some event triggered when an error occurs? any comments are needed. thanks regards basim

[ns] errors and channel conditions

hello dear all Could you please help me regarding understanding of error conditions over a WLAN channel. I need to have your point of views on the statement: "Are channel conditions entirely summarized in error rates? " waiting for your responses...thanks regards b

[ns] urgent comments plz: Errors and channel

hello all Somebody might like to respond to this urgent call to understand error conditions over a WLAN channel. I need to have your point of views on the statement: "Are channel conditions entirely summarized in error rates? " waiting for your responses...thanks regards b

[ns] Errors and channel

> > hello all > > Could you please help me regarding understanding of error conditions over > a WLAN channel. I need to have your point of views on the statement: > > > > "Are channel conditions entirely summarized in error rates? " > > waiting for your responses...thanks > regards > b >

[ns] please help out

hi all I have a very urgent and desperate call for help. I am using NS2-31 and EDCA patch of TU Berlin, for 802.11e. Please guide me how to: 1. get the MAC level throughput trace file (the TCL code etc.) 2. how I can evaluate the behaviour of H.264 over NS2 for some video frames. Probably I am l

Re: [ns] changing priority of 4 queues of EDCA dynamically????

/07, Claus Christmann <[EMAIL PROTECTED]> wrote: > > > Please see inline below: > > Basim Javed wrote: > > Hi dear all > > > > I am using NS2.31 and EDCA patch of TU Berlin (EDCA_ns-2_28-v1-0-2.tgz) > > Within this EDCA patch, there is one patch file

[ns] PHY error model feedback to MAC

dear all I am using NS2.31 and EDCA patch of TU Berlin (EDCA_ns-2_28-v1-0-2.tgz). When using a certain error model, for instance uniform distributed for IEEE 802.11e, then how can I get error information from PHY to MAC/LLC. What I mean is that I want to set some error model, and when there is a

[ns] changing priority of 4 queues of EDCA dynamically????

Hi dear all I am using NS2.31 and EDCA patch of TU Berlin (EDCA_ns-2_28-v1-0-2.tgz) Within this EDCA patch, there is one patch file called priority.tcl and it holds values for some parameters of 4 priority queues of EDCA: I need to change these values dynamically during the run time of EDCA...ple

[ns] help in emergency plz

Dear all I am a newbie in NS2. I need an urgent help regarding; 1- I found many main() in C++ code, although I was expecting only one, which would control the whole NS - what does this mean? 2- Apparently 802.11e is not part of NS 2.31, and there is code available at some sites. How should I fit

[ns] about 802.11e

Dear all I am a newbie in NS2. I need an urgent help regarding; 1- I found many main() in C++ code, although I was expecting only one, which would control the whole NS - what does this mean? 2- Apparently 802.11e is not part of NS 2.31, and there is code available at some sites. How should I fi

[ns] post processing

dear all an urgent help needed: can anybody comment on using AWK & PERL for NS2 trace files, regarding ease of thier usage, and finding relevant scripts for 802.11e and TCP for both? thanks a lot. kind regards B

[ns] MAC level throughput

dear all How can I make a trace file which can be processed to find out the 802.11eMAC level throughput? Is there another way? thanks B

[ns] simulation of 802.11e

Dear all I am new to the NS2 world. Could any one guide me if I can change the parameter set values of 802.11e at the start of each Superframe, in the available implementation of NS2. I would really appreaciate your support and detailed reply. Thank you. kind regards B

[ns] regarding MAC throughput

Hi all I need data to plot throughput at 802.11e. Could somebody guide which of the two approaches would be better: 1. write a C++ code which can generate an output file, to be picked by gnuplot 2. somehow generate MAC level trace file using traceall (if such thing is possible at MAC level), pos

[ns] regarding xgraph and gnuplot

hi all I am new to NS2 world, and just recently installed NS 2.31. I would really appreciate help regarding comparison of xgraph and gnuplot, regarding their strengths and weaknesses. Thank you in advance. regard B