[STDS-802-3-EPOC] Additional Eval Criteria item to support ToD (time of day) delivery for Mobile Backhaul
Hi Steve,
Related to the Eval criteria delay items that we currently have in the
Eval Criteria table, I don't think this will adequately capture an Eval
criteria that will meet the needs of Moble BackHaul synchronization for
EPoC. I'd like to suggest adding the following additional Eval Criteria
item, based on my EPoC Synchronization transport presentation from the
Phoenix meeting:
Design to support a time transfer error performance of +/-120 ns or
less from the CLT MAC/PLS to the CNU MAC/PLS
There are a number of ways this can be met:
- Fixed & equal delay from MAC/PLS to the Medium and the Medium to
MAC/PLS (but a not likely case)
- Equal TX / RX delay to/from the MAC/PLS interface to/from the medium
- Reportable time delay across the PHY layers to a known level of
precision in each direction
(may depend on configured OFDM, FEC, and interleaving configured
parameters)
- Others?
I'm open to adjusting this number - up or down (preferable) as we move
forward with choices of PHY parameters and reference models. Our
competition (GPON, DOCSIS, P2P Ethernet) is currently doing much better
than this performance level.
Comments welcome...
Regards,
Bill
--
Bill Powell
Alcatel-Lucent
Fixed Access Systems Engineering
2301 Sugar Bush Road
Raleigh, NC 27612
bill.powell@xxxxxxxxxxxxxxxxxx
(O) 919-850-6462
(Cell) 919-614-3225
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