AdHoc Wifi

[Chandra Shekar]

Can anybody please suggest an ns3 example where the ENQUEUE function of the AdHocWifiMac class is used.

I am a beginner and would very much appreciate your help

It would be tremendously helpful in our project

Thank you,

Chandrashekar

[Sebastien Deronne]

It is called when you inject traffic between adhoc stations.
An example will not give you information about the implementation.
What is your clear request about the enqueue method?

[Chandra Shekar]

SIR, i'm trying to implement a mac protocol for co-operative communication. I have written a code by creating 3 nodes, one being access point and other 2 stations. the second station is supposed to act as a helper which re transmits the packets received from ap to station and vice-versa. in simple words it is acting as a relay node. For this operation i thought of using this enqueue function. I want to know whether it is possible or not. if possible how to do it, else what other option do i have . 

Thank you

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[Sebastien Deronne]

If you try to implement a new mac layer, why do you want to inject packets above the mac layer?

Which mac protocol are you trying to implement?

[Chandra Shekar]

a simple 802.11 protocol modified for cooperative communication.

On Wed, Apr 8, 2015 at 9:38 PM, Sebastien Deronne <sebastie...@gmail.com> wrote:

If you try to implement a new mac layer, why do you want to inject packets above the mac layer?

Which mac protocol are you trying to implement?

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[Sebastien Deronne]

Ok. But it does not reply to my first question...

[Chandra Shekar]

sir in my project i have created 3 nodes. one of the nodes is helper, all it does is forward the received packet to the other node. to implement this i need ENQUEUE function implementation.

On Fri, Apr 10, 2015 at 5:17 PM, Sebastien Deronne <sebastie...@gmail.com> wrote:

Ok. But it does not reply to my first question...

[Sebastien Deronne]

Ok but at which layer does it forward packets? You need to respect the layered implementation!

[Chandra Shekar]

sorry for my mistake sir, it is frames not packets and at MAC layer. can it be done??

On Sat, Apr 11, 2015 at 6:23 PM, Sebastien Deronne <sebastie...@gmail.com> wrote:

Ok but at which layer does it forward packets? You need to respect the layered implementation!

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[Sebastien Deronne]

Then I guess you need to implement a new MAC layer on top of the existing PHY layer.

[Chandra Shekar]

yes sir, i hv written code for conventional wifi-mac, for helper i need to write another special functionality to retransmit received frames. i want to know how to do it.

On Sat, Apr 11, 2015 at 8:40 PM, Sebastien Deronne <sebastie...@gmail.com> wrote:

Then I guess you need to implement a new MAC layer on top of the existing PHY layer.

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[Sebastien Deronne]

It is just like I said, you need to IMPLEMENT it. 

What you seem to have written so far is a simulation script, using the existing code base.

So first step => read tutorial, manuals and try to understand how ns-3 works.

[Chandra Shekar]

sir, just wanted to know if there is any function to achieve retransmission.

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[Sebastien Deronne]

Wi-Fi retransmissions are typically handled in DcaTxop and EdcaTxopN.

[Chandra Shekar]

sir , can you please suggest any examples where these classes have been used so that i can get a clear view of how to implement these classes.

On Sat, Apr 11, 2015 at 8:56 PM, Sebastien Deronne <sebastie...@gmail.com> wrote:

Wi-Fi retransmissions are typically handled in DcaTxop and EdcaTxopN.

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[Sebastien Deronne]

Those classes are used by the current Wi-Fi implementation.

Just check in the code how it works.

You should also have a look on some tutorials on how to implement new classes in ns-3.

[Chandra Shekar]

thank you for your guidance sir , if there's any more doubt i'll contact you.

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