Re: [STDS-802-3-EPOC] Evaluation Criteria and Requirements Ad Hoc Minutes
Marek,
I agree with you that this is a system level specification. But I think we need to develop PHY level specifications that ensure a system can meet this level of synchronization. I don't think this will be much beyond adding a requirement that EPoC US path and DS path within a PHY have a symmetrical delay within some bounds (such as ± 1 or 2 TQ ). While it is true that we didn't do this for EPON we may have gotten lucky. If it is relatively easy to accomplish I think such a requirement is in order.
Best Regards,
Duane
FutureWei Technologies Inc.
duane.remein@xxxxxxxxxx
Director, Access R&D
919 418 4741
Raleigh, NC
From: Marek Hajduczenia [mailto:marek.hajduczenia@xxxxxx]
Sent: Wednesday, January 16, 2013 12:15 PM
To: STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-3-EPOC] Evaluation Criteria and Requirements Ad Hoc Minutes
Steve,
I'd like to request that the minutes reflect concerns Leo and I brought forward in relation to the frequency and synchronization precision requirements. We believe these are not PHY specific requirements, but system level requirements. If such a requirement does find its way into PHY spec, there is no way to verify it separately, i.e., nobody measures what part of the system level precision budget is consumed in PHY alone.
I'd also like to have it recorded in the minutes (as mentioned on the call) that EPON does support mobile backhaul services with *no* requirements of this type thrown into the PHY specs.
Furthermore, I believe it was also mentioned that such a requirement would overly burden devices that are not expected to carry mobile backhaul services. However, in the PHY spec it is not possible to distinguish one from another (there is just a PHY), given that 802.3 does not provide product specs. Such system level requirements should be brought forward to the group that deals with a system level design.
Regards
Marek
From: Shellhammer, Steve [mailto:sshellha@xxxxxxxxxxxxxxxx]
Sent: Wednesday, 16 January, 2013 05:04 PM
To: STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-3-EPOC] Evaluation Criteria and Requirements Ad Hoc Minutes
All,
Attached are the minutes for the Evaluation Criteria and Requirements Ad Hoc meeting this morning, and also the latest open issues list.
Steve
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