Re: [STDS-802-3-EPOC] Revised TDD contribution
Hi George,
A quick additional comment: our discussion in the TDD group was that it
could be re-configure infrequently (e.g. based on time of day), but the
intent is NOT to dynamically change the upstream/downstream mix based on
instantaneous loading. The TDD group would obviously like feedback from
operators thinking of using TDD to make sure this is acceptable.
-- john
On Fri, Jan 25, 2013 at 12:44 PM, Garavaglia, Andrea <
andreag@xxxxxxxxxxxxxxxx> wrote:
> Hi George,****
>
> Thanks for your feedback, very valid point – we discussed this point
> yesterday during the TDD session. ****
>
> ** **
>
> The group shared the understanding that the solution presented does not
> actually require to reset the CNU for such scope: the TDD parameters are
> communicated (e.g. beaconed periodically) via the PHY link and it should be
> possible therefore to reconfigure the TDD cycle and resource partitioning
> between upstream and downstream while the system is operating (as well as
> to configure CNU that newly attach to the system). We may need to discuss,
> also based on the decision and capability made for the PHY link work, how
> fast can such configuration occur and whether some guard intervals would
> need to be considered when reconfiguring – I CC Steve here (chairing TDD),
> so we can consider it while proceeding with the work. I think we can
> further discuss that during the upcoming phone calls.****
>
> ** **
>
> Thanks,****
>
> Andrea****
>
> ** **
>
> *From:* Matthew Schmitt [mailto:m.schmitt@xxxxxxxxxxxxx]
> *Sent:* Friday, January 25, 2013 10:39
> *To:* George Hart @ Rogers; Garavaglia, Andrea;
> STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx
> *Cc:* Jorge_Salinger@xxxxxxxxxxxxxxxxx
> *Subject:* Re: [STDS-802-3-EPOC] Revised TDD contribution****
>
> ** **
>
> Sharing on behalf of George Hart per his request (since he is unable to
> override some offending privacy text in his corporate email system).
> Please read below.****
>
> ** **
>
> Thanks.****
>
> ** **
>
> Matt****
>
> ** **
>
> *From: *George Hart <George.Hart@xxxxxxxxxxxxxx>
> *Date: *Friday, January 25, 2013 10:32 AM
> *To: *"Garavaglia, Andrea" <andreag@xxxxxxxxxxxxxxxx>
> *Cc: *Matthew Schmitt <m.schmitt@xxxxxxxxxxxxx>, Jorge Salinger <
> Jorge_Salinger@xxxxxxxxxxxxxxxxx>
> *Subject: *RE: [STDS-802-3-EPOC] Revised TDD contribution****
>
> ** **
>
> Andrea,****
>
> ****
>
> Thank you for this contribution for TDD mode. ****
>
> ****
>
> One of the benefits we hope to exploit from TDD mode is a flexibility in
> how capacity is allocated between upstream and downstream. It would appear
> from this proposal that such allocation is relatively static, as a CNU
> power up is required to change it. It would be preferable that a method is
> supported in the EPOC standard for changing the relative time duration for
> Downstream vs Upstream transmission without requiring all the CNUs affected
> by the change needing a power reset.****
>
> ****
>
> Thank you for considering the implications on your proposal for this use
> case.****
>
> ****
>
> Best regards,****
>
> ****
>
> George****
>
> ****
>
> P.S. My automatic email privacy notification addendum contravenes the IEEE
> email reflector policy so I request that you or Matt forward my note to the
> EPOC group without that offending text.****
>
> ****
>
> *From:* Garavaglia, Andrea [mailto:andreag@xxxxxxxxxxxxxxxx<andreag@xxxxxxxxxxxxxxxx>]
>
> *Sent:* Friday, January 25, 2013 11:38 AM
> *To:* STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx
> *Subject:* [STDS-802-3-EPOC] Revised TDD contribution****
>
> ****
>
> Hi all,****
>
> Please find attached the updated contribution Steve just mentioned, Mark
> is posting it on the web as well.****
>
> ****
>
> Changes compared to previous revision are:****
>
> **- **Slides 8-11 -> Empty boxes are now labeled Control
> Multiplexer****
>
> **- **Slide 15 diagram is revised -> typo on localGrantList
> corrected and bottom part simplified (no need to check for discovery flag
> in the CLT)****
>
> **- **Slide 2: clarification added in red****
>
> ****
>
> A draft of the changes on the specification according to the proposal will
> also be posted by Mark.****
>
> ****
>
> Thanks,****
>
> Andrea****
>
> ** **
>
> ------------------------------
>
>
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