[ndnSIM] How can application detect change in point of attachment to the Internet

[Monika Dangi]

Hello Rozhonova,
Thank-you for your reply. I am new to ndnSIM and ns3. i read extensive on
what are callbacks and how to use them. But i am learner, i could not
called callbacks on association and deassociation event.
Can you please elaborate it. i can tell you my algorithm:
this shold be done by the application installed on mobile node.
on_association()
{  start_time=scheduler::now(); // start_time a variable defined in
application header
  rto=double(2.0) // rto is variable defined in application header
}

It may be small problem for you but really i m not getting how to start, i
mean where to write the callback signature and where to setup write
makecallback(). do i need to write this(on_association) function signature
in ns3::sta-wifi-mac or in application.cc file?? i can see only
tracecallback on association, can i do the required functionality on these
tracecall or do i need to add new callbacks??

please guide me here as i have no body to ask to and i am confused after
reading so much about callbacks in ns3.

Thank-you in advance

On Sun, Apr 24, 2016 at 9:56 AM, Natalya Rozhnova <
rozhnova.natalya at gmail.com> wrote:

> Hi Monika,
>
> This is not a very trivial problem :)
>
> Well, what you can do is to look into the ns3/wifi module and use the
> callbacks provided by the sta-wifi-mac on association and disassociation
> events.
> You can use these callbacks from your producer node and activate whatever
> you want when this events happen. Or, if the implemented callbacks are not
> sufficient for your goal, you can add your own ones.
>
> Hope it helps,
> Best,
> Natalya
>
> > Le 24 avr. 2016 à 15:19, Monika Dangi <monikabaraut at gmail.com> a écrit :
> >
> > Thank you Lixia Zhang for your reply.
> > well my problem is the producer is mobile, and i want the producer
> application to know when the point of attachment to a router is changed so
> that the retransmission timer is set accordingly. Is there any function in
> ns3/mobility-module.h or in the ns3/wifi-module.h( perhaps in
> YansWifiPhyHelper ) that returns the node id of the router to which the
> mobile node ( producer ) is attached????  The scenario is, there is a grid
> of nodes and an mobile node which is moving randomly in any direction and
> may get attached to any grid node and starts sending packet.
> >
> > i just want to know the time till a mobile node stays attached to a
> router(grid node), so i thought if there is any function in
> ns3/mobility-module.h or ns3/wifi-module.h, that can tell the current
> attached router node's id then i can calculate the time mobile node stays
> attached to a router.
> > i hope you understand the scenario.
> > Thank-you
> >
> > On Wed, Apr 20, 2016 at 8:13 PM, Lixia Zhang <lixia at cs.ucla.edu> wrote:
> >
> >> On Apr 20, 2016, at 4:24 AM, Monika Dangi <monikabaraut at gmail.com>
> wrote:
> >>
> >> Hey All,
> >> i am working on mobility model in NDN, well there is a way of
> communication from application layer to network layer. But I am stuck at
> how to tell application layer that the mobile node has moved and now the
> point of attachment is changed.
> >
> > Not sure I understand the picture in your mind.
> > 1/ NDN's communication model is data fetching: consumer app sends
> interest packets, that either successfully bring back data packets, or fail
> to do do.
> > 2/ if the mobile nodes are consumers, consumers do not need to do
> anything special when moving.
> > 3/ if the mobile nodes are producers, depending how producer mobility is
> handled, consumers figure out ways to get the data produced by mobile
> producers.
> > 4/ there is a recent paper on
> > "A Survey of Mobility Support in Named Data Networking"
> >
> http://lasr.cs.ucla.edu/afanasyev/data/files/Zhang/nom16-ndn-mobility-survey.pdf
> >
> >> Is there anybody working on similar problem? or can anybody provide me
> literature so that i can look myself?
> >>
> >> Thank-you
> >>
> >> --
> >> Monika
> >> MTech CSE
> >> IIT Roorkee
> >> _______________________________________________
> >> ndnSIM mailing list
> >> ndnSIM at lists.cs.ucla.edu
> >> http://www.lists.cs.ucla.edu/mailman/listinfo/ndnsim
> >
> >
> >
> >
> > --
> > Monika
> > MTech CSE
> > IIT Roorkee
> > _______________________________________________
> > ndnSIM mailing list
> > ndnSIM at lists.cs.ucla.edu
> > http://www.lists.cs.ucla.edu/mailman/listinfo/ndnsim
>
>


-- 
Monika
MTech CSE
IIT Roorkee
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