[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This is a 10 day email ballot to make a determination on the withdrawn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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