Wifi-adhoc queries

[Parth Deodia]

Hello,

Can anyone explain wifi-adhoc code like the tutorials ?

I want to implement different mobility variations in wifi-adhoc.(In the wifi-adhoc, one node is static and the other moves in +ve X direction. I want to make (a) movement in both the nodes in +ve X direction, (b) movement in opposite X direction ) How can I do this ?

Also how can I change the protocol in wifi-adhoc ? I want to use AODV ? (by changing the number in {socket.SetProtocol (1)} ). What does this number mean ?

Also, I want to lot the graph of throughput versus the distance between the nodes. How can I do it ? I am using OS X. 

Thank you.

[Konstantinos]

Dear Parth,

On Thursday, June 26, 2014 1:06:30 AM UTC+1, Parth Deodia wrote:

Hello,

Can anyone explain wifi-adhoc code like the tutorials ?

 

Have you studied the tutorials/documentation and you do not understand something in the wifi-adhoc? If you have a specific question we could answer.

 

I want to implement different mobility variations in wifi-adhoc.(In the wifi-adhoc, one node is static and the other moves in +ve X direction. I want to make (a) movement in both the nodes in +ve X direction, (b) movement in opposite X direction ) How can I do this ?

You need to specify that your self. In current scenario the movement of node_1 is controlled by the following line

153  Simulator::Schedule (Seconds (1.5), &Experiment::AdvancePosition, this, c.Get (1));

You can write a similar code for the other node. Also you can change the "AdvancePosition" method to take other arguments as well (e.g. the direction you want to increment) 

 

Also how can I change the protocol in wifi-adhoc ? I want to use AODV ? (by changing the number in {socket.SetProtocol (1)} ). What does this number mean ?

If you have only 2 nodes as in that example, you do not need a routing protocol... However, if you 'must' use AODV or other routing protocols, I would recommend to read the tutorials and the other wireless examples that use such routing. The SetProtocol in the PacketSocketAddress is about the transport protocol not the routing protocol. 

 

Also, I want to lot the graph of throughput versus the distance between the nodes. How can I do it ? I am using OS X. 

The current example you study plots exactly that... Throughput vs Distance and since node_0 is always at (0,0) it uses the position of node_1 to get the distance.

 

Thank you.

[Parth Deodia]

Hello Konstantinos,

Thank you for the help.

I have one more query in Netanim how can I speed up the simulation ? I mean how to fasten the clock instead of running in milliseconds, how can I set it to seconds?

 Also, what is the boundary of Netanim ?

I am using Netanim 3.105 and ns3-dev.

Thank you.

[Parth Deodia]

Hello Konstantinos,

In wifi-adhoc, what is the packet size, packet rate and and at what time instant packet leave the node ?

Also what physical parameters are assumed in the code ? What kind of environment is considered for the packet transmission in air ?

I understood the device used is 802.11a and the range of device is taken as 30 m. Is it correct ?

Kindly help. 

Thank you.

[Konstantinos]

ALL your questions are answered by carefully studying the code.

[Parth Deodia]

Thank you Konstantinos !

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