1. November 2007
doc.: IEEE /2752r1
July2008
802.11aa – Robust Audio Video Transport Streaming Jacksonville Opening Report
Date:
Authors:
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

2. November 2007
doc.: IEEE /2752r1
July2008
Abstract
This submission summarizes aa goals and agenda for the IEEE Denver (July 2008) meeting.
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

3. Opening Report July2008 November 2007 doc.: IEEE 802.11-07/2752r1
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

4. Attendance Recording - 802.11
November 2007
doc.: IEEE /2752r1
July2008
Attendance Recording
Sign-in at
“newton” is a local server, not reachable via a VPN
“newton” is active only during sessions
First “sign in” to provide contact information
Only name and affiliation may be posted publicly, as per IEEE rules
No other personal information will not be publicly available
Second, log attendance
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

5. 802.11aa – July 2008 July2008 Call Meeting to Order
November 2007
doc.: IEEE /2752r1
July2008
802.11aa – July 2008
Call Meeting to Order
Policies and Procedures, Attendance reminder:
**IEEE Patent Policy
Are there any patent claim(s)/patent application claim(s) and/or the holder of patent claim(s)/patent application claim(s) that the participant believes may be essential for the use of that standard? Minute any responses that were given, specifically the patent claim(s)/patent application claim(s) and/or the holder of the patent claim(s)/patent application claim(s) that were identified (if any) and by whom.
***Affiliation FAQ -
Anti-Trust FAQ -
Ethics -
IEEE Policies and Procedures -
IEEE 802 Policies and Procedures -
** Read slide deck
*** Note especially items #7 & #11
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

6. 802.11aa Goal(s) for the Denver Meeting
November 2007
doc.: IEEE /2752r1
802.11aa Goal(s) for the Denver Meeting
July2008
Approvals
Approval of Jacksonville Meeting minutes (08/702r1)
Teleconference schedule
Joint Meeting with 802.1AVB
Listen to Technical Proposals (10, so far)
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

7. Agenda Tuesday AM2 (1030-1230) Meeting Call To Order
November 2007
doc.: IEEE /2752r1
July2008
Agenda Tuesday AM2 ( )
Meeting Call To Order
Appoint a secretary for this session (AM2)
Review IEEE/802 & Policies and Rules
Call for knowledge of Essential Patents
Approve agenda or Modify and approve modified agenda
Review and Approve Jacksonville minutes, schedule teleconferences
General Agenda for the week – Review/Discussion (schedule presentations)
Announcements
TGaa Secretary
Joint meeting with 802.1AVB
Call for Presentations
Technical Presentations
Recess until Tuesday PM1 (1330)
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

8. Technical Presentations
July2008
Technical Presentations
Tuesday AM2
Packets and MPEG Frames – Background (08/717r1)
Demo
OBSS Requirements (08/765r0)
OBSS Follow up
Tuesday PM1
Multicast/Broadcast Communication with Acknowledgement (08/803r0)
Block ACK Enhancements for Multicast Transmissions (08/809r1)
More Reliable Broadcast/Multicast (08/816r1)
Group Block Acknowledgements for Multicast Traffic (08/766r0)
EDCA Enhancements to Improve Link Reliability for Multicast Streams (08/810r0)
Wednesday AM1
Managed Contention Access (08/818r1)
Thursday AM2
Using Packet Drop Precedence for Graceful Degradation (08/764r0)
Requirement and Implementation for Intraflow and Inter-AC Diffserv (08/857r0)
Thursday PM2
*VTS Frame Structure (08/802r0)
Ganesh Venkatesan, Intel Corporation

9. Minutes review Jacksonville Minutes 08/0702r1 July2008 November 2007
doc.: IEEE /2752r1
July2008
Minutes review
Jacksonville Minutes 08/0702r1
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

10. November 2007
doc.: IEEE /2752r1
July2008
Motion-1
Move to approve TGaa Jacksonville meeting minutes (document 08/0702r1).
Moved: Graham Smith
Second: Brian Hart
Vote: Passes unanimously
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

11. November 2007
doc.: IEEE /2752r1
July2008
Motion-2
Move to approve the following schedule for TGaa Teleconferences: Mondays Hrs ET, bi-weekly starting July28, 2008
Moved: Dalton Victor
Second: Brian Hart
Vote: Unanimously
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

12. Announcements - Call for Presentations
July2008
Announcements - Call for Presentations
Graceful degradation of audio video streams when there is insufficient channel capacity, by enabling packet discarding without any requirement for deep packet inspection,
Increased robustness in overlapping BSS environments, without the requirement for a centralised management entity,
Intra-Access Category prioritization of transport streams by modifying EDCA timing and parameter selection without any requirement for deep packet inspection,
Improved link reliability and low jitter characteristics for multicast/broadcast audio video streams,
Interworking with relevant 802.1AVB mechanisms (802.1Qat, 802.1Qav, 802.1AS)
Ganesh Venkatesan, Intel Corporation

13. Agenda Tuesday PM1 (1330-1530) Meeting Call To Order
November 2007
doc.: IEEE /2752r1
July2008
Agenda Tuesday PM1 ( )
Meeting Call To Order
Call for knowledge of Essential Patents
Approve agenda or Modify and approve modified agenda
Technical Presentation(s)
OBSS requirements (08/765r0)
OBSS (08/864r0)
OBSS Follow Up (08/457r3 as a VTS doc -- from Jacksonville)
Recess till Wednesday AM1 (0800 – 1000)
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

14. July2008
Straw Poll
Should the OBSS Requirements presentation (08/765r1) be used as the starting point for a formally written OBSS Requirements document?
Yes: 19
No: 0
Abstain: 6
Ganesh Venkatesan, Intel Corporation

15. Agenda Wednesday AM1 (0800-1000)
November 2007
doc.: IEEE /2752r1
July2008
Agenda Wednesday AM1 ( )
Meeting Call To Order
Call for knowledge of Essential Patents
Approve agenda or Modify and approve modified agenda
Technical Presentation(s)
Managed Contention Access (08/818r1)
Multicast/Broadcast Communication with Acknowledgement (08/803r0)
Block ACK Enhancements for Multicast Transmissions (08/809r1)
Recess till Thursday AM1 (0800 – 1000)
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

16. Agenda Thursday AM1 (0800-1000) Meeting Call To Order
November 2007
doc.: IEEE /2752r1
July2008
Agenda Thursday AM1 ( )
Meeting Call To Order
Call for knowledge of Essential Patents
Approve agenda or Modify and approve modified agenda
Technical Presentations
More Reliable Broadcast/Multicast (08/816r2)
Group Block Acknowledgements for Multicast Traffic (08/766r0)
EDCA Enhancements to Improve Link Reliability for Multicast Streams (08/810r0)
Reliable Video Communication Protocol (08/587)
Recess till AM2 (Joint Meeting with 802.1AVB)
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

17. Agenda Thursday AM2 (1030-1230) Meeting Call To Order
November 2007
doc.: IEEE /2752r1
July2008
Agenda Thursday AM2 ( )
Meeting Call To Order
Call for knowledge of Essential Patents
Approve agenda or Modify and approve modified agenda
802.11v/802.1AS status
802.11aa Status Update
Using Packet Drop Precedence for Graceful Degradation (08/764r0)
Requirement and Implementation for Intraflow and Inter-AC Diffserv (08/857r0)
802.1Qat/802.11e “Reservations”
Recess till Thursday PM2 (1600 – 1800)
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

18. Agenda Thursday PM2 (1600-1800) Meeting Call To Order
November 2007
doc.: IEEE /2752r1
July2008
Agenda Thursday PM2 ( )
Meeting Call To Order
Call for knowledge of Essential Patents
Approve agenda or Modify and approve modified agenda
Technical Presentations
VTS Frame Structure (08/802r0)
Motion on requesting the reuse of ‘the soon to be retired’ CFI bit  to 802.1
Closing Report Review
Adjourn till September 2008 (Waikoloa Meeting)
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

19. November 2007
doc.: IEEE /2752r1
July2008
Motion-3
Whereas aa is seriously considering proposal(s) that depend on the re-use of the C-Tag CFI bit:
Move to Request WG to Request IEEE to defer re-use of the soon to be retired 802.1q C-Tag CFI bit until aa has had a chance to formally discuss it with
Moved: Alex Ashley
Second: Graham Smith
Vote: 5/1/2 (Y/N/A)
Ganesh Venkatesan, Intel Corporation
Peter Ecclesine, Cisco Systems

20. Criteria for evaluating Multicast Video proposals
September 2006
doc.: IEEE /1458r0
July 2008
Criteria for evaluating Multicast Video proposals
Requirements
Flexibility (high reliability and efficiency vs high scalability - 100s in MC group)
Shall work with 5 STAs
Should work with 10s of STAs
Comparable to a single stream unicast with limited retries:
PLR
delay and delay jitter
Bandwidth efficiency (since video throughput can be high)
Support for Multiple transmissions per beacon period
Compatible with legacy STAs
Provide support for duplicate detection
Allow for rate adaptation
Preserve power save performance
Not require h/w change
Provide support for collision avoidance
Hart et al (Cisco Systems et al)
Joonsuk Kim, Broadcom Corp.

21. Requirements for Multicast Video
September 2006
doc.: IEEE /1458r0
July 2008
Requirements for Multicast Video
Requirements
Very low PLR
Low delay and delay jitter
Multiple transmissions per beacon period
Compatible with legacy STAs
Duplicate detection
Objectives
Efficiency (since video throughput can be high)
Feedback for rate adaptation
Compatible with power save
Flexibility (high reliability and efficiency vs high scalability - 100s in MC group)
In harmony with FBMS
SW upgrade for 11n implementations
Hart et al (Cisco Systems et al)
Joonsuk Kim, Broadcom Corp.

22. Requirements (1/5) Improves QoS Contention based protocols
July 2008
Requirements (1/5)
Improves QoS
When a stream (TSPEC?) has been accepted, traffic from other BSSs should not cause it to stop
Shall support 2 overlapping BSS
Should support 3 overlapping BSS
>3 OBSS unlikely in practice and probably an NP-hard problem
Contention based protocols
EDCA-AC admissions should be preserved
No special OBSS handling required for DCF, U-PSMP ?
Controlled access protocols
Shall support protection for controlled access reservations
Shall support TBTT / DTIM adjustment to avoid beacon collision and multicast collision
Alex Ashley, NDS Ltd

23. Requirements (2/5) Inter-AP communication Management
July 2008
Requirements (2/5)
Inter-AP communication
Shall be possible via the WM when both APs in range of each other
Might be possible via WM when APs not in range
Should be possible via the wired DS ?
Management
Shall not mandate an AP to be configured as the master/supervisor controller
If solution requires an AP to be automatically chosen as master/supervisor, shall be robust to signal fade and AP removal
Might support master/supervisor controller for enterprise use
Shall not mandate pre-shared configuration
Alex Ashley, NDS Ltd

24. Requirements (3/5) Dynamic
July 2008
Requirements (3/5)
Dynamic
Shall be robust to the order in which APs are switched on
Removal of an AP shall not cause video streams in other BSSs to terminate
Shall (should?) support dynamic stream creation & deletion
Maintains (current levels of) privacy
Shall not require detailed information about stream reservations to be exchanged between APs
Alex Ashley, NDS Ltd

25. Requirements (4/5) Fair ESS / BSS
July 2008
Requirements (4/5)
Fair
The right to access the WM shall be fair
e.g. supervisor AP does not get “first dibs”
Actual division of time might not be fair, due to differing loads in each BSS
ESS / BSS
It shall not matter if the OBSS are in the same ESS or different ESS.
Alex Ashley, NDS Ltd

26. Requirements (5/5) Security
July 2008
Requirements (5/5)
Security
Shall not require the reduction in the security policy of a BSS
Shall be robust to attacks from rogue AP / non-AP STA
Does not create a new denial of service technique
Compatible with legacy equipment
Should not require non-AP STA modification
Shall be tolerant of legacy APs and non-AP STAs
Frequencies
Shall support 2.4GHz and 5GHz
Shall support 20 and 40MHz channel widths
Shall support 5 and 10 MHz channels when all BSS using same channel width
Might support other frequencies (3.65 GHz) ?
Alex Ashley, NDS Ltd

27. Non-functional Requirements
July 2008
doc.: IEEE /0765r1
July 2008
Non-functional Requirements
Avoid OBSS
Use channel selection to avoid overlapping BSS whenever possible
Simple to implement
Compared to maximum (theoretical) throughput, OBSS enhancements are going to be way down on the purchase decision list
A complex solution unlikely to be implemented and hard to create a test plan
Provides an incentive
Beyond being a good (wireless) citizen, enabling enhanced OBSS must provide a benefit, or it will not be enabled
Regulation might require E-OBSS, but let’s not presuppose this
Alex Ashley, NDS Ltd
Alex Ashley, NDS Ltd