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

[Max Ott]

Why do you say 'The code to set nodes' antenna power seems does not
 work. So the antenna power of nodes is 20dBm.' What's the evidence? I
 don't think the network interface has a 'power' attribute, but it
 should have a 'tx_power' one.

 Also, if you are already using a nodehandler script, why aren't you
 using the 'antenna' command
 (http://www.orbit-lab.org/wiki/Documentation/NodeHandler/Commands/antenna).
 Does that not work, either?

 -max





 On Sat, Feb 23, 2008 at 4:16 PM, Fan Wu <wufan.nju at gmail.com> wrote:
 >
 >
 >
 >
 > 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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 >  orbit-user at orbit-lab.org
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 >
 >