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Re: [802SEC] RE: [802SEC] FINAL TALLY: +++10 Day EC Email Ballot (Closes no later than 29 April 2007)+++ Motion to approve the formation of the 802.11 Video Transport Stream (VTS) Study Group



Pat,

The ballot specifically stated:  "This ballot opens 11:59 PM ET Wednesday
18th, 2007 and closes when all voting EC members have cast a ballot but no
later than 11:59 PM ET Sunday April 29th, 2007 if enough ballots have been
cast for a decision to be made (more than 9 approves or disapproves)."

Since all voting members of the EC cast their ballots it seems to me that
the conditions have been met and the ballot can be deemed closed.

I think that one legitimate reason for making the decision sooner, rather
than later, is to allow .11 to plan/schedule meetings of the new SG during
the May session in Montreal.

Regards,
Carl
 

-----Original Message-----
From: owner-stds-802-sec@ieee.org [mailto:owner-stds-802-sec@ieee.org] On
Behalf Of Pat Thaler
Sent: Tuesday, April 24, 2007 6:43 PM
To: stuart@OK-BRIT.COM; STDS-802-SEC@listserv.ieee.org
Subject: [802SEC] RE: [802SEC] FINAL TALLY: +++10 Day EC Email Ballot
(Closes no later than 29 April 2007)+++ Motion to approve the formation of
the 802.11 Video Transport Stream (VTS) Study Group

I guess it is my day to be obnoxious about rules. This can't be the final
tally because it isn't 30 Apr 2007 yet. 

From 7.1.3.4:
The minimum duration of an electronic ballot shall normally be 10 days. For
urgent matters once sufficient response is received to clearly decide a
matter, the Ballot may be closed early. This allows a decision to be reach
[sic] in less than 10 days. Ballots where the possibility of an early close
exists must be clearly marked accordingly. Otherwise, the tally of votes
shall not be made until at least 24 hours after the close of the ballot to
allow time for delivery of the e-mail votes.

This doesn't seem to be an "urgent matter" since the ballot will close
before the 802.11 interim meeting. In any case, I don't see any marking on
the ballot announcement that this is a ballot where the early close
provision applies. I know we all voted approve and it seems extremely
unlikely that any of us will be changing our votes before the ballot closes,
but we should follow our own rules. For the recent ballot I conducted, I
waited until at least 24 hours after the ballot close to announce the final
tally though I doubt anyone was held in suspense by the delay.

Regards,
Pat 

-----Original Message-----
From: ***** IEEE 802 Executive Committee List *****
[mailto:STDS-802-SEC@ieee.org] On Behalf Of Stuart J. Kerry
Sent: Tuesday, April 24, 2007 12:17 PM
To: STDS-802-SEC@listserv.ieee.org
Subject: [802SEC] FINAL TALLY: +++10 Day EC Email Ballot (Closes no later
than 29 April 2007)+++ Motion to approve the formation of the 802.11 Video
Transport Stream (VTS) Study Group

802 EC Members,

This is the final tally for the recent 802 EC ballot:

Motion:  "To approve formation of an IEEE 802.11 Study Group to examine
issues related to delivery of Video Transport Streams (VTS) over IEEE
P802.11, with the intent to create a PAR and Five criteria to form a new
Task Group. The proposed PAR and 5C would be reviewed by the 802.1 Audio
Video Bridging Task Group (802.1AVB TG), and in addition both the 802.1AVB
TG and 802.11 VTS SG (and eventually the 802.11 TG, if formed) will meet
jointly at IEEE 802 plenary meetings, unless mutually agreed not to".

 Vote categories:         APP    DIS    ABS    DNV    Date
 -------------------------------------------------------------
 VC Mat Sherman           APP                         04/19/07
 VC Pat Thaler            APP                         04/19/07
 ES Buzz Rigsbee          APP                         04/20/07
 RS Bob O'Hara            APP                         04/19/07
 TR John Hawkins          APP                         04/19/07
 01 Tony Jeffree          APP                         04/18/07
 03 Bob Grow              APP                         04/20/07
 11 Stuart Kerry          APP                         04/18/07
 15 Bob Heile             APP                         04/21/07
 16 Roger Marks           APP                         04/20/07
 17 John Lemon            APP                         04/23/07
 18 Mike Lynch            APP                         04/18/07
 19 Steve Shellhammer     APP                         04/18/07
 20 Arnie Greenspan       APP                         04/19/07
 21 Vivek Gupta           APP                         04/18/07
 22 Carl Stevenson        APP                         04/19/07
 ME Geoff Thompson        non-voting                  -
 -------------------------------------------------------------
 16 TOTALS        result  16     00     00     00     Return
                          100%   00%    00%    00%    100% 

Regards,

/ Stuart
_______________________________ 

Stuart J. Kerry 

Chair, IEEE 802.11 WLANs WG
c/o: NXP Semiconductors,
1109 McKay Drive, M/S 48A SJ,
San Jose, CA 95131-1706,
United States of America. 

+1 (408) 474-7356 - Phone
+1 (408) 474-5343 - Fax
+1 (408) 348-3171 - Cell
eMail: stuart@ok-brit.com
_______________________________ 

-----Original Message-----

From: ***** IEEE 802 Executive Committee List *****
[mailto:STDS-802-SEC@ieee.org] On Behalf Of Stuart J. Kerry
Sent: Wednesday, April 18, 2007 2:10 PM
To: STDS-802-SEC@listserv.ieee.org
Subject: [802SEC] +++10 Day EC Email Ballot (Closes no later than 29 April
2007)+++ Motion to approve the formation of the 802.11 Video Transport
Stream (VTS) Study Group

Dear EC Members, 

The 802 EC Chair has delegated me to conduct this EC ballot on his behalf.

This is a 10 day email ballot to make a determination on the withdrawn
motion which was deferred to an 802 EC email ballot, that was submitted to
the Closing Orlando March 2007 802 EC meeting: 

Motion:  "To approve formation of an IEEE 802.11 Study Group to examine
issues related to delivery of Video Transport Streams (VTS) over IEEE
P802.11, with the intent to create a PAR and Five criteria to form a new
Task Group. The proposed PAR and 5C would be reviewed by the 802.1 Audio
Video Bridging Task Group (802.1AVB TG), and in addition both the 802.1AVB
TG and 802.11 VTS SG (and eventually the 802.11 TG, if formed) will meet
jointly at IEEE 802 plenary meetings, unless mutually agreed not to".

Moved: Stuart J. Kerry 

Seconded: Tony Jeffree

This ballot opens 11:59 PM ET Wednesday 18th, 2007 and closes when all
voting EC members have cast a ballot but no later than 11:59 PM ET Sunday
April 29th, 2007 if enough ballots have been cast for a decision to be made
(more than 9 approves or disapproves).  

Executive Summary:

The proposed 802.11 Video Transport Stream (VTS) Study Group will focus On
enhancements within the 802.11 MAC/PHY layers to improve video streaming
performance over 802.11 links. The problem space is constrained to be
limited to issues unique to 802.11 and nothing more.

The 802.11 VTS SG will collaborate with 802.1AVB TG to ascertain that
802.11 specifications include support for all mechanisms specified in
802.1AVB. If there are no mechanisms within 802.11 to support 802.1AVB, the
802.11 VTS SG will work jointly with 802.1AVB TG to specify the required
mechanisms. This strategy is decided based on discussions with Michael Johas
Teener (802.1AVB TG Chair) and Ganesh Venkatesan (Proposed Chair of the
802.11 VTS SG, if approved), as well as the two WG Chairs.

If the 802.11 VTS SG formation is approved by the EC, the tentative Schedule
for 802.11 VTS SG in May interim meeting in Montreal includes a Presentation
on 802.1AVB and 802.1AVB Transport Protocol followed by a discussion how
802.11 fits into this specification. These meetings are open to all 802
members. 

Approved in 802.11 WG:

.         802.11 WNG SC - Results: 59-3-11 .         WG - Results: 76-1-25

Details:

802.11 VTS SG is focused on enhancements within the 802.11 MAC/PHY layers to
improve the performance of video streams sent over 802.11 links. 
This is the main focus of the 802.11 VTS SG and is expected that the SG will
spend 80% of its time in this activity. Some of the areas for study are (not
in any specific order, not a complete list). Some of these topics are not
fully explored yet:

1.     Enhancements to 802.11e mechanisms to render them effective for
transport streams (not all bits are equal

2.     QoS Management mechanisms  (permits QoS control from higher
layers)

3.     Optimizations to make medium access more deterministic

4.     Forward Error Correction techniques that are effective for 802.11
(specifically low reliability of the medium)

5.     Resiliency mechanisms to mitigate interference

6.     Heuristics for retransmission, packet drop, etc

7.     Channel dynamics estimation and adaptation techniques 

In addition (if there are currently no known mechanisms in 802.11) the VTS
SG, in order to guarantee that the wired and wireless sub-systems can
co-exist, will also work on the following items listed below. It is
anticipated that the items in this list will involve some level of joint
activity between 802.1AVB TG and 802.11 VTS SG. About 20% of the 802.11 VTS
SG activity is expected here. Please note that the items listed below Will
be in 802.11 (if needed) but will be performed jointly with the experts From
802.1AVB TG.

.         Mechanisms to support those specified by 802.1 Qat (stream
reservation protocol - bandwidth, latency, Admission Control and Time
Synchronization) and 802.1Qav (forwarding and queuing of time-sensitive
streams). Note that support for 802.1AS is already included in 802.11v.

.         Mechanisms to support 802.1Qas (time synchronization).

.         Any additional mechanisms that are specified in 802.1AVB Requiring
additional support in 802.11. 

A liaison will be established between 802.1AVB TG and 802.11 VTS SG. The
liaison will ascertain 802.1 AVB mechanisms and optimizations in 802.11 for
video streaming are compatible and they work together to improve streaming
performance. This will be a 2-way communication - advancements in 802.1AVB
will be made known to the 802.11 VTS SG members and advancements made in the
SG made known to 802.1AVB TG members.

.         The documents generated by the two groups may be reviewed by Each
other (on a case by case basis), 

.         There may be presentations from one group to the other to Provide
rationale/motivation for an approach/solution and 

.         Members from each group will attend meetings of the other when
possible.

Regards, 

/ Stuart
_______________________________ 

Stuart J. Kerry 

Chair, IEEE 802.11 WLANs WG
c/o: NXP Semiconductors,
1109 McKay Drive, M/S 48A SJ,
San Jose, CA 95131-1706,
United States of America. 

+1 (408) 474-7356 - Phone
+1 (408) 474-5343 - Fax
+1 (408) 348-3171 - Cell
eMail:  stuart@ok-brit.com
_______________________________ 

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