Re: [8023-10GEPON] presentations for September meeting
Frank,
Yes, all these topics are within our scope. I suggest you make presentations
for these for the next meeting. You also may want to pre-circulate them on
the reflector to get feedback ahead of the meeting.
I would like to make a few comments on each topic you suggested.
> US burst timing requirements and feasibility
Before talking about any specific timing parameter, it would be great if we
can see a study similar to one done for 1Gbps EPON
(http://www.ieee802.org/3/efm/public/nov02/optics/lynskey_optics_1_1102.pdf)
Are there any volunteers with resources to make a similar study for 10Gbps
optics?
> 10G Bandwidth efficiency, any impact for MPCP?
Bandwidth efficiency depends on many things, many of which are outside the
scope of 802.3, for example, DBA, scheduling cycle, discovery window size
and period. For that reason, selecting a specific efficiency target didn't
work for us in 802.3ah, and I think it won't work here.
I assume you only referred to physical layer impact on efficiency. Let's be
more specific and list specific sources of overhead: FEC overhead,
burst-mode overhead, including laser on/off, AGC, CDR. Anything else? (I did
not mention 64b/66b encoding overhead, since it is fixed and well
understood).
I think for each of these overhead components, rather then focusing on a
specific overhead boundary, we should find the most optimal tradeoff between
the performance, overhead, and complexity. I welcome any further discussion
on this topic.
> Issues associated with co-existing 1G and 10G as well as optical RF
> overlay.
In July we passed the following motion:
Following PAR approval, 802.3av Task Force should investigate the
development of physical layer specification(s) which accommodate
the simultaneous operation of existing 1G-EPON and/or a 1550-
1560nm video overlay, with 10G-EPON.
This activity will probably take a form of an ad hoc group. Please make
sure to sign-up and contribute your ideas.
Regards,
Glen
> -----Original Message-----
> From: Frank Chang [mailto:ychang@vitesse.com]
> Sent: Monday, August 21, 2006 11:38 AM
> To: glen.kramer@teknovus.com; STDS-802-3-10GEPON@listserv.ieee.org
> Subject: RE: [8023-10GEPON] presentations for September meeting
>
> Glen;
>
> Following July meeting discussion, I feel we may also have to solicit
> proposals and reach consensus on following topics/features:
>
> US burst timing requirements and feasibility
> 10G Bandwidth efficiency, any impact for MPCP?
> Issues associated with co-existing 1G and 10G as well as optical RF
> overlay.
>
> Thanks
> Frank C.
>
> -----Original Message-----
> From: Glen Kramer [mailto:glen.kramer@teknovus.com]
> Sent: Friday, August 11, 2006 3:04 PM
> To: STDS-802-3-10GEPON@listserv.ieee.org
> Subject: [8023-10GEPON] presentations for September meeting
>
> Dear colleagues,
>
> It appears that our next meeting will take place on September 18th and
> 19th
> (Monday and Tuesday) and the High-Speed SG will meet on 20th and 21st, so
> there will be no overlap and interested people will be able to attend both
> meetings.
>
> The meeting venue has not been finalized yet. A venue should be announced
> at
> least 30 days before the meeting, so expect the announcement very soon.
>
> Meanwhile, it is time to start working on presentations for the next
> meeting.
>
> There are many specific topics/features that we have to reach consensus
> on:
>
> Downstream Wavelength
> Upstream Wavelength
> Power budgets
> FEC: Optional or Mandatory
> FEC Category: Stream-based vs. Frame-based
> other topics - anything that is in scope of our PAR can be discussed.
>
> If you can think of any other topic not listed here, please propose it on
> the reflector.
>
> If you have opinion on any of these or other topics, make a presentation
> with arguments in favor of it. Remember, a proposal should have > 75%
> support to get accepted as a baseline. It is a good idea to circulate
> proposals on the reflector and get feedback, and to enlist additional
> supporters.
>
> Regards,
> Glen