Re: [STDS-802-3-EPOC] PHY Link ad hoc call tomorrow (Wednesday) 10am Pacific
Fine by me.
From: Duane Remein [mailto:Duane.Remein@xxxxxxxxxx]
Sent: Tuesday, July 30, 2013 4:47 PM
To: Mark Laubach; STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx
Cc: Duane Remein
Subject: RE: PHY Link ad hoc call tomorrow (Wednesday) 10am Pacific
Mark,
Could we have an ope discussion on the following topics?
Timestamp - this was part of Avis presentation that was approved by motion but there were no details. I would like to propose that this is a 32 bit counter clocked off the PHY Clock (204.8 MHz) or some multiple thereof. The CNU would keep a local copy of this clock (reset on receipt of DS PHY Link timestamp) with behavior very similar to the local clock in EPON. This would be part of the PHY frame overhead along with the already approved PHY Configuration (2b), PHY Target Address (48b) and FEC Pointer (here I recall 14b but haven't found it in any motioned material).
Another item from Avi's presentation would be Start and number of RB's for initial Ranging window. As a starting point here I would propose a 32 bit counter clocked off the PHY Clock (204.8 MHz) or some multiple thereof for the start timer, call it PHY Discovery Start (essentially the same size as the Timestamp). When the local PHY clock = PHY Discovery Start then the PHY ranging window opens. A second register, call it PHY Discovery Duration (in symbols or PHY clocks), would signify the end of the window.
Avi's presentation also included references to the Preamble sequence. I would like to here more on what this is to include.
A detailed discussion on PHY Discovery would be good to have also, it should include:
* What information must the CNU acquire prior to responding to the PHY Discovery window? My guess: FDD/TDD flag, FFT Size, Cyclic Prefix size, Window Size, Interleaver Depth (?), OFDMA Frame size, US PLC Center Frequency, US PLC Cycle Time. Anything else absolutely required?
* What conditions on the CNU must be met on the CNU prior to responding to the PHY Discovery window? My guess is only that the local PHY clock and counter are synchronized.
* How does the CNU respond and with what information? My guess is it only needs to transmit the preamble sequence the its MAC address.
After this if there is time (ha ha) we could start on the "fine tuning".
Best Regards,
Duane
FutureWei Technologies Inc.
duane.remein@xxxxxxxxxx<mailto:duane.remein@xxxxxxxxxx>
Director, Access R&D
919 418 4741
Raleigh, NC
From: Mark Laubach [mailto:laubach@xxxxxxxxxxxx]
Sent: Tuesday, July 30, 2013 7:02 PM
To: STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx<mailto:STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx>
Subject: [STDS-802-3-EPOC] PHY Link ad hoc call tomorrow (Wednesday) 10am Pacific
Dear IEEE P802.3bn Task Force participants,
There will be a PHY Link ad hoc conference call starting at its new time of 10AM Pacific time tomorrow (Wednesday).
As of this time, I have received no presentations to socialize for tomorrow's call.
We can use the time to review work plan and discussion.
Please be familiar with the IEEE Patent Policy:
https://development.standards.ieee.org/myproject/Public/mytools/mob/slideset.pdf
Conference Call URL:
WebEx Meeting Number: 921 130 644
To start: https://broadcom.webex.com/broadcom/j.php?J=921130644
Meeting Password: This meeting does not require a password.
Yours truly,
Mark Laubach, Chair
IEEE P802.3bn Task Force
Broadband Communications Group
Broadcom Corporation
1351 Redwood Way
Petaluma, CA, 94954
[broadcom.jpg]
Tel: +1.707.792.9093
Cell: +1.650.996.2219
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