Glen,
Thanks for the careful consideration. Responses in-line.
Ed
From: Glen Kramer [mailto:glen.kramer@xxxxxxxxxxxx]
Sent: Wednesday, October 25, 2017 3:37 PM
To: Harstead, Ed (Nokia - US) <ed.harstead@xxxxxxxxx>; STDS-802-3-NGEPON@xxxxxxxxxxxxxxxxx
Subject: RE: [802.3_NGEPON] Call for agenda items -- weekly consensus building for IEEE 802.3ca (100G-EPON)
Hi Ed,
I am not entirely clear on the plan that you propose. I don’t see how data rates are to be upgraded for different kinds of networks.
For the coexistence with 10G-PON, it is more or less clear. There is only one possibility and 10G ONUs have to be taken out before deploying 100G upstream.
[Harstead, Ed (Nokia - US)] this is correct.
But for the coexistence with GPON, I can see three mutually-exclusive options and none of them support the entire upstream rate progression from 25G to 50G to 100G.
[Harstead, Ed (Nokia - US)] In the table on slide 8, I did not check the box for 2x25G or 100G co-existence with GPON. We do not need to support these. We only have an objective for 25G PON to co-exist with GPON. So the single
upgrade path starting with GPON is clear: GPON à 25G PON (1270 US)
à 2x25G (1270 + 1290 US; GPON removed)
à 2x25G + 1x50G.
If an operator starts with GPON + 25G upstream, there is no way to add 50G upstream to the same network (forklift upgrade is required). If 25G upstream is skipped, then it is also not clear what is the way to
get to full 100G: 50G + 2x25 or 2x50G. If the 50G upstream is feasible at that time, why would the operator add two wavelength at 25G instead of one at 50G to get to 100G. So, for the GPON coexistence, maybe only options 1 and 3 are viable.
For the greenfield, there are even more options:
In the Peacemaker plan, all initial optics options eventually converge into a single plan at 100G.
[Harstead, Ed (Nokia - US)] I don’t think so, not if you add the 2x50G plan to 2x25G + 1x50G plan in Peacemaker. Then you have two.
But here, it seems the initial choice will determine the unique evolution path forever with no prospect of converging to a single plan. In the end, there would be three 100G upstream plans:
Is the above a correct interpretation of your proposal, or am I missing something?
[Harstead, Ed (Nokia - US)] As with Peacemaker, 2x50G is not addressed. That is something new for both plans. You are correct that the “new-old” plan has two wavelength plans for 100G = 2x25G + 1x50G (#1 and #2 above). Is that
a problem?
-Glen
From: Harstead, Ed (Nokia - US) [mailto:ed.harstead@xxxxxxxxx]
Sent: Tuesday, October 24, 2017 12:48 PM
To: STDS-802-3-NGEPON@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_NGEPON] Call for agenda items -- weekly consensus building for IEEE 802.3ca (100G-EPON)
Curtis, all,
Attached is the presentation for this week’s consensus call.
Ed
From: Harstead, Ed (Nokia - US)
Sent: Monday, October 23, 2017 1:50 PM
To: 'Curtis Knittle' <C.Knittle@xxxxxxxxxxxxx>;
STDS-802-3-NGEPON@xxxxxxxxxxxxxxxxx
Subject: RE: [802.3_NGEPON] Call for agenda items -- weekly consensus building for IEEE 802.3ca (100G-EPON)
Curtis, all,
I will bring in a contribution covering these topics:
Wavelength plan
Peacemaker plan (Glen/Frank/Ed/Yong)
50G single wavelength
Wavelength plan
Ed
From: Curtis Knittle [mailto:C.Knittle@xxxxxxxxxxxxx]
Sent: Monday, October 23, 2017 11:13 AM
To: STDS-802-3-NGEPON@xxxxxxxxxxxxxxxxx
Subject: [802.3_NGEPON] Call for agenda items -- weekly consensus building for IEEE 802.3ca (100G-EPON)
Dear Colleagues,
We have the 100G-EPON (IEEE 802.3ca) consensus building meeting scheduled for this Thursday, October 26, 11:30 am – 1:00 pm MDT. Please let me know by 5:00 pm MDT Wednesday if you have any topics for the agenda.
As a reminder from the closing report of our last F2F meeting in Charlotte, the following topics were deemed important for contributions:
Actions:
Power budget
Close on 25Gbps power budget (Ed/Dekun/Umeda)
Characterization method for both transmitter and receiver (Dekun, John J, Vincent, Junwen, Frank, Greg, Umeda-san)
MPCP/MPRS
Discovery process / configuration / ONU capabilities field in RegREQ (Glen Oct 12 – Glen to doodle poll)
Fault Tolerance/Recovery/Loss of Channel
Wavelength plan
Peacemaker plan (Glen/Frank/Ed/Yong)
SOA preamp/dynamic range
Cost and feasibility still needs to be demonstrated (Dekun)
Line coding (Postponed until after FEC decision)
FEC information
Comparisons of parity matrices and different FEC (Mark/Bill/Bo)
Loud/soft ONU analysis – (Bill)
Operating in burst mode at 1E-2 (Vincent)
Latency (Shan)
Define a common set of assumptions and parameters common to all FEC analyses
Mark to send email after noodling
SERDES/CDR
Check margin for 10^-2 input BER (Yin, Ryan)
50G single wavelength
Technical feasibility of upstream bursts (Critical path item)
Wavelength plan
Power budget
Modulation
Thank you,
Curtis
Curtis Knittle
VP Wired Technologies – R&D
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