[EFM] EFM / DOCSIS comparison
(sorry if this is a duplicate. Earlier attempt to send did not appear to get through)
Harry, on this comment you made: "...those of us familiar with DOCSIS tend to favor the dynamic request/grant protocol approach, while those that are not, favor reinventing the wheel."
With all due respect to those that have worked (and are still working) on getting certifiable DOCSIS 1.1 products, DOCSIS 1.1 is not a proven protocol in real operation. It is still being "adjusted" in the labs. It may well turn out just as Roy has said other attempts in the past have. Reinventing DOCSIS is NOT what those trying to maintain a simple TDMA scheme seek.
It is also possible that those who have spent years buried in cable modems are not "thinking outside the box" with respect to EFM and optical fiber. There are some very dis-similar attributes. DOCSIS required a conservationist view, as do all copper media. This is evident in the emphasis on "waste" you made in the following post:
"However, wasting 20% on a Gigabit link represents 200 Mbps - compared to 2 Mbps on HFC. Hence the need to use intelligent b/w allocation on ePON remains."
First, this is non-sequitur. Second, you are also assuming a 32-split node (because it makes the comparison to DOCSIS look better?)
But, isn't it telling that EFM-over-fiber can WASTE more bandwidth across 16-32 users than DOCSIS has in total for 1000, and still outperform DOCSIS by orders of magnitude?
It is not what we can save that matters, but what we can provide.
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