Re: [802.3_NGEPON] Proposed motions on the wavelength issue

[John Johnson <000007ff7d378f43-dmarc-request@xxxxxxxx>]

Frank,

I would agree with Ed that the operational justification for and cost implications of two different downstream versions hasn't been sufficiently covered yet. A supposed coexistence advantage with a single-channel 50G PON also needs a contribution to justify it.  

Regards,

John

On Wed, Jul 12, 2017 at 11:25 AM, frank effenberger <frank.effenberger@xxxxxxxxxx> wrote:

I’d rather do it as a package. 

Frank E.

 

 

From: Harstead, Ed (Nokia - US) [mailto:ed.harstead@xxxxxxxxx]
Sent: Wednesday, July 12, 2017 5:19 AM
To: frank effenberger; STDS-802-3-NGEPON@LISTSERV.IEEE.ORG
Subject: RE: Proposed motions on the wavelength issue

 

Frank,

 

We are thinking along the same lines.  However I propose that we take the motions one step at a time.  Dekun and I drafted this motion, which only addresses two upstream options:

 

802.3ca shall adopt a wavelength plan with two 20 nm wide wavelength options for the first 25G upstream channel:

1.       “Plan A” option: center wavelength between 1300 and 1320 nm, exact value to be determined

2.       “Plan B” option: 1270 nm

Only the “Plan A” option will be required to co-exist with 10G EPON.

 

Your motion bundles in two downstream options, and I don’t think we have the same degree of consensus on that.  What do you think of starting with the above upstream option motion, and then follow that with a downstream option motion, extracted from your text below?

 

Ed

 

From: frank effenberger [mailto:frank.effenberger@HUAWEI.COM]
Sent: Wednesday, July 12, 2017 10:55 AM
To: STDS-802-3-NGEPON@LISTSERV.IEEE.ORG
Subject: [802.3_NGEPON] Proposed motions on the wavelength issue

 

I have some motions I would like to make. 

 

Given that I think there is support for defining at least the first 25G channel, and that the ‘either or’ plan has a lot of support, I suggest:

802.3ca shall adopt a wavelength plan for the first 25G channel with two options,  

Option 1: downstream at 1358.4nm width 3nm, upstream at 1310nm width 20nm; coexistent with 10GE-PON

Option 2: downstream at 1336.6nm width 3nm, upstream at 1270nm width 20nm;  coexistent with G-PON reduced wavelength set.

 

Consequent to this motion, I propose another motion:

802.3ca shall add the objective: Wavelength allocation allowing concurrent operation with G-PON reduced wavelength set (1290-1330nm) PHYs

 

Sincerely,

Frank Effenberger