hello
Please code protocol LEACH and PEGASISE
Le Vendredi 15 novembre 2013 11h56, Eduardo Feo <[email protected]> a écrit :
If you want to use TOSSIM with mobility, you will need to implement, by
yourself,
a way to modify the links' gain values during the simulation, in this sense, you
will be able to create/remove and modify existing links based on the nodes'
current
positions.
As far as I know, there is not a direct way to set node positions, or to move
nodes inside TOSSIM.
Instead, the user must specify, at simulation setup, the 'quality' of the
wireless links composing the network.
This "quality" is represented by a 'gain' value, which is usually computed
using a radio propagation model,
such as the LinkLayerModel tool developed by Zúñiga which can be found within
the TinyOS source tree.
So, in practice, as nodes are moving,
(a) new wireless links are created: when two nodes get within the transmission
range of each other,
(b) existing links disappear: when distance between two nodes becomes larger
than the tx range, and,
(c) the qualities of existing links change: increase gain if nodes get closer
to each other, decrease gain if nodes get further away.
.
Therefore, in order to implement a mobility model, you need to keep track of
the nodes' positions and, with certain frequency, re-update the links' gain
values after processing the current topology using the radio propagation model.
I did it once long time ago (I do not have the implementation at hand), but if
I remember well, it just requires a basic understanding of how TOSSIM works,
and a few lines of code.
Hope this helps
Cheers,
Eduardo Feo
On Fri, Nov 15, 2013 at 2:33 AM, deQ maz <[email protected]> wrote:
Hi all,
>
>
>How to implement random waypoint in Tossim?
>
>
>Thanks
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