Re: [802.3_EPOC] Continuing work on EPOC objectivesŠ
Hi Kevin,
Can you expand on " ... based on a misunderstanding of the expectations in 802.3." ? I looked through EFM PMD definitions and while there are certainly different levels of BER specified at PMD and FEC block interfaces, MAC service interface seems to be always provided with 10^-12 BER.
Perhaps before getting into the discussion on the target BER at MAC service interfaces, we could see what the raw BER is expected off PMD and what FEC gain is assumed. That might be helpful to understand what the limitations are, rather than looking at the number only from a perspective of a number
Marek
-----Original Message-----
From: Noll, Kevin [mailto:kevin.noll@xxxxxxxxxxx]
Sent: 29 April 2012 20:45
To: STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_EPOC] Continuing work on EPOC objectivesŠ
I haven't seen much discussion of the objectives over the weekend. This is good because you are all supposed to be spending time away from work-related activities on the weekends. :-)
To bring up a more specific item for discussion - I'd like to hear suggestions on how to handle Objective 9.
9. PHY to have a BER better than or equal to 10-10 at the PHY service interface.
We started this objective with a BER of 10^-12 based on a misunderstanding of the expectations in 802.3. We have heard several opinions on this leading me to believe that 10^-10 is a reasonable goal.
What problems do you all see with setting the BER goal to be 10^-10?
--kan--
--
Kevin A. Noll
-----Original Message-----
From: <Noll>, Kevin Noll <kevin.noll@xxxxxxxxxxx>
Reply-To: Kevin Noll <kevin.noll@xxxxxxxxxxx>
To: "STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx" <STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx>
Subject: [802.3_EPOC] Continuing work on EPOC objectivesŠ
SG members,
I will be unable to attend the conference call tomorrow, so we will likely
not work on the objectives.
In order to keep the work moving along, I would like to open a dialog here
on the mailing list. I've copied below the latest revision of the
objectives that were adopted and those that still need work. Please
comment and/or suggest changes to the "TO BE CONSIDERED" set.
ADOPTED IN MARCH
1. Specify a PHY to support subscriber access networks using the EPON
protocol and operating on point-to-multipoint RF distribution plants
comprised of all-coaxial cable or hybrid fiber/coaxial media.
2. Maintain compatibility with 1G-EPON and 10G-EPON, as currently defined
in IEEE Std. 802.3 with minimal augmentation to MPCP and/or OAM if needed
to support the new PHY.
5. PHY to support symmetric and asymmetric data rate operation.
6. PHY to support independent configuration of upstream and downstream
transmission operating parameters.
7. PHY to operate in the cable spectrum assigned for its operation without
causing harmful interference to any signals or services carried in the
remainder of the cable spectrum.
TO BE CONSIDERED
4. Provide at least one physical layer specification that is capable of
operating at :
A baseline data rate of at least 1 Gbps at the PHY service interface when
transmitting in 120 MHz, or less, of assigned spectrum under baseline
plant conditions;
data rates lower than the baseline rate when transmitting in less than
120 MHz of assigned spectrum or when plant conditions prevent a higher
data rate;
data rates higher than the baseline rate and up to 10 Gbps when
transmitting in more than 120 MHz of assigned spectrum or when plant
conditions support a higher data rate;
9. PHY to have a BER better than or equal to 10-10 at the PHY service
interface.
--kan--
Kevin A. Noll
________________________________________________________________________
To unsubscribe from the STDS-802-3-EPOC list, click the following link:
https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-EPOC&A=1
________________________________________________________________________
To unsubscribe from the STDS-802-3-EPOC list, click the following link:
https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-EPOC&A=1
________________________________________________________________________
To unsubscribe from the STDS-802-3-EPOC list, click the following link:
https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-EPOC&A=1