[orbit-user] Having difficulty in setting upmulti-hopenvironment.

[Fan Wu]

The handler script is:

defGroup('commander', [2,2])

defGroup('workers', [6,6])

         

allGroups.net.w0 { |w|

  w.mode = "ad-hoc"

  w.type = 'b'

  w.channel = "2"

  w.essid = "opp"

  w.rate = "11M"

#  w.tx_power = "5dBm"

  w.power = "0dBm" # This line does not work.

  w.ip = "%192.168.%x.%y"

}

 

whenAllUp() {|node|

         wait 30

#       nodes('commander').exec("The app to test forwarding probability")

         wait 120

         Experiment.done

}

 

The commands to set noise I used are:

 

wget http://instrument1.orbit-lab.org:5012/interference/initialize

wget http://instrument1.orbit-lab.org:5012/interference/awgn?bandwidth=10

wget
http://instrument1.orbit-lab.org:5012/interference/set?power=5&channel=2

wget http://instrument1.orbit-lab.org:5012/interference/start

 

Is there anything wrong?

 

Thanks!

 

Fan Wu

Department of Computer Science and Engineering

The State University of New York at Buffalo

Email: fwu2 at cse.buffalo.edu

 

  _____  

From: orbit-user-bounces at orbit-lab.org
[mailto:orbit-user-bounces at orbit-lab.org] On Behalf Of Sanjit Krishnan Kaul
Sent: Friday, February 22, 2008 4:55 PM
To: 'Orbit user discussion mailing list'
Subject: Re: [orbit-user] Having difficulty in setting
upmulti-hopenvironment.

 

Thanks. 

 

What is the frequency setting of the noise antennas and the nodes you are
using? What bit-rates are you operating at? Can you send all your settings,
maybe the script you are using (if it is a node-handler script)?

It is difficult to understand why at 5dbm noise the link from [6,6] to [2,2]
is not seeing packet errors as [2,2] is adjacent to a noise-antenna.

 

Cheers,

Sanjit

 

From: orbit-user-bounces at orbit-lab.org
[mailto:orbit-user-bounces at orbit-lab.org] On Behalf Of Fan Wu
Sent: Friday, February 22, 2008 1:32 PM
To: 'Orbit user discussion mailing list'
Subject: Re: [orbit-user] Having difficulty in setting up
multi-hopenvironment.

 

The noise antenna power I tried are -20dBm, -10dBm, 0dBm, and 5dBm. The code
to set nodes' antenna power seems does not work. So the antenna power of
nodes is 20dBm.

Grid nodes are [[2,2],[6,6]].

I want to make the forwarding probability between these two nodes less than
30%.

 

 

Fan Wu

Department of Computer Science and Engineering

The State University of New York at Buffalo

Email: fwu2 at cse.buffalo.edu

 

  _____  

From: orbit-user-bounces at orbit-lab.org
[mailto:orbit-user-bounces at orbit-lab.org] On Behalf Of Sanjit Krishnan Kaul
Sent: Friday, February 22, 2008 1:24 PM
To: 'Orbit user discussion mailing list'
Subject: Re: [orbit-user] Having difficulty in setting up
multi-hopenvironment.

 

What noise antenna power did u use? What orbit grid nodes did u select? What
number of hops are you looking for?

 

 

From: orbit-user-bounces at orbit-lab.org
[mailto:orbit-user-bounces at orbit-lab.org] On Behalf Of Fan Wu
Sent: Friday, February 22, 2008 4:08 AM
To: 'Orbit user discussion mailing list'
Cc: 'Li (Erran) Li'
Subject: [orbit-user] Having difficulty in setting up multi-hop environment.

 

Hi,

 

I have difficulty in configuring multi-hop environment by injecting noise. I
tried the sample codes and changed some parameters, such as antenna power
and radio power. But the forwarding probabilities were always >99%. Is there
anyone has configured a similar environment? Could you share the code?
Thanks a lot! 

 

By the way, the code I used for setting radio power seems not right. Anyone
has any idea?

allGroups.net.w0 { |w|

  w.power = "18dBm"

}

 

Thanks a lot!

 

Fan Wu

Department of Computer Science and Engineering

The State University of New York at Buffalo

Email: fwu2 at cse.buffalo.edu

 

 

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