[e2e] What is the meaning of "end-to end"?
demir at usc.edu
Tue May 22 08:24:53 PDT 2001
What is "N"? If it is "the number of ends", I find this
"ambigious" because N can be very large, but the system might do
unicasting. To me, "casting" is "directing".
N =0, Nocasting
N =1, Unicasting
N=Maximal (a special edge-case of Multicasting), where Maximal>=2
If "multi" is not used in "literally", they all can be seen as special
case of multicasting.
> I have always been bothered by the asymmetry implied by the classification
> N=2 - unicast
> N>2 - multicast
> N maximal - broadcast.
> Communications is more than the act of *sending*.
> So we also should have:
> N=2 - uniscan
> N>2 - multiscan
> N maximal - holoscan
> Yes, I'm serious. We should classify systems by the number of stations a
> station can listen to simultaneously. If you think about this a while, it
> is orthogonal to the prior dimension, because there are such things as
> holoscan but non-broadcast systems (e.g. repeater-based wireless networks
> since the receiver treats the original signal to it as noise, preferring to
> get the repeated packet from a more local station).
> The symmetry applies especially well with architectures like Ethernet and
> 802.11b. And becomes even more relevant with systems like OFDMA which
> start out with systems that are holoscan, turning them into uniscan and
> unicast through a bunch of protocol layers.
> - David
> WWW Page: http://www.reed.com/dpr.html
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