Re: [ns] Attaching wired nodes to a satellite terminal node

[Merkourios Karaliopoulos <m.karaliopoulos@eim.surrey.ac.uk>]

 Well Edmund,the routing structure  for  "normal" nodes not
supporting link/mac/etc layer functionality is much different than the
respective one in the "enhanced" wireless nodes.
 What you could actually do is to derive a new class of terminals from the
basic satellite node,which will estimate propagation delay in the
appropriate manner (not along the line connecting the terminals but along
the earth arc(curve) always based upon the terminal positions
in (lon,lat) terms)
 You will need to add the new class and modify a couple of routines in
SatGeometry.h/.cc -potentially at the satroute* files.You may also define
a new type of link,named e.g sat-terrestrial or fibersat,which will be
passed as a parameter to linktype variable of the appropriate satnode
interface.
 
 Hoping that I helped you -rather than confused you

 Merkouris

On Tue, 3 Oct 2000, Edmund Solberg [iso-8859-1] L�vlund wrote:

> I'm trying to realise the following topology in ns:
> -one geostationary sat. with two terminal-nodes on the ground.
> -some "normal" ns nodes ($ns node)attached to the sat. terminal nodes
> 
> I tried to use duplex-links between the sat. terminal nodes and the wired 
> nodes, but get the following error while running ns:
> "bus error".
> 
> I guess this is caused by the satellite extension's routing algorithm. (set 
> satrouteobject_ [new SatRouteObject]).
> 
> Is there any way to realise this kind of mixed topology in the current 
> version of ns?
> 
> Thanks
> Edmund S. Loevlund
>