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[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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1. Process stuff
	Ground rules, decorum, voting rights, etc.
	Stds process overview
	5 Critieria overview
	PAR overview
	Objectives overview

2. Operator requirements (pertaining to physical layer)
	Service coexistence issues and criteria
	Services to be provided over EPoC
		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
		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

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