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Re: [802.3_EPOC] Study Group Questions



I'm new to this group so please forgive me if these questions have already been answered. If so where can I find the document?

1) What are the frequencies to be used for Downstream and Upstream?

2) Is the goal to use the existing infrastructure "As-Is" or do we have the option to upgrade equipment?

3) Is the goal to maintain existing amplifier spacing?

4) Is the plan to maintain the 6/8 MHz channel spacing?

5) What about legacy signaling? Is that being maintained?

-John

 

On Fri, Dec 9, 2011 at 9:31 PM, Hesham ElBakoury <Hesham.ElBakoury@xxxxxxxxxx> wrote:

Hi Howard,

 

I have few questions regarding the Operator requirements (pertaining to physical layer):

 

   Service coexistence issues and criteria

   Services to be provided over EPoC

HEB> Do you mean residential and business services or video, IPTV, VoIP, data services ?

      and how they will evolve over time

      Business vs residential services

            (will they exist on the same network?)

      Asymmetry vs. symmetry

   Existing cable plant characteristics

      Architectures

            (Node+0 "passive", Node+N [N=1-?],  Complete HFC, MxU)

      Amplifier characteristics and considerations that will effect the PHY

      Cable & passives characteristics

      Typical size of cable plant

HEB> I am not sure how you measure the size ? (number of home passed, size of coverage area, number of nodes, … etc).

      Subscribers passed

      Number and size of taps

   Changes to cable plant characteristics over time

      (e.g. passive and active element changes, any use of bypasses?)

   Spectral allocation

      and how it changes over time

      Which frequencies are amplified and which are passive

   `  What spectrum will be allocated for EPoC initially,

            and how will that change over time

                Regional differences for changes?

   Functional Assumptions and Impairments

      DOCSIS 3.0 has already characterized in CM-SP-PHYv3.0-I05-070803, Chapter 5,

                  and in CM-SP-DRFI-I12-111117, Chapter 5, for "in amplified" regions of

                  cable. For both "in amplified" and "passive" EPoC considerations, are

                  there any additonal functional assumptions and impairments that need to

                  be considered for up to 1Gbps and higher operation? 

                How will these change over time?

                Are there regional differences; e.g. China, Europe?

   Number of subscribers per network, take rate

   Minimum required channel data rate

   Maximum desired channel data rate

 

Thanks

 

Hesham

 

-----Original Message-----
From: Howard Frazier [mailto:hfrazier@xxxxxxxxxxxx]
Sent: Monday, December 05, 2011 7:00 PM
To: STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx
Subject: [802.3_EPOC] Study Group Questions

 

The first meeting of the IEEE 802.3 EPON Protocol over Coax (EPoC) PHY Study Group will be held January 24th and 25th in Newport Beach, CA, hosted by the Ethernet Alliance. Please see my previous message for links to meeting logistical details.

 

In preparation for the meeting, Mark Laubach and I put together a list of topics that can help us prepare for a successful study group meeting, and these are listed in the attached file.

 

The first set of topics deals with the IEEE 802 standards development process. I have all of the material I need for this section, and I am sure that I will be able to enlist the help of some of our experienced hands to deliver it.

 

The second set of topics deals with operator requirements, and this is where I would like to make an appeal for contributions. We may not get contributions that address all of the topics listed, and there may not even be universal agreement that the topics are relevant, but I think that these are areas that must be explored in the study group if we are to do a proper job of defining the scope of a new project, and judging it against the "5 Criteria".

 

People wishing to make a contribution to the study group should review the "Procedure for Presenters" information that can be found here:

 

http://www.ieee802.org/3/epoc/public/presentproc.html

 

Since this is a new email reflector, I would also like to make people aware of the IEEE 802.3 Working Group email reflector policy that can be found here:

 

http://www.ieee802.org/3/reflector_policy.html

 

I will welcome your comments and questions.

 

Howard Frazier

Broadcom Corporation

 

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