November 2008
doc.: IEEE 802.11-08/0813r3
VHT SG Report to EC
Date: 2008-11-14
Authors:
Name
Company
Address
Phone
email
Bruce Kraemer
Marvell
5488 Marvell Lane,
Santa Clara, CA, 95054
321-427-4098
bkraemer@ marvell.com
Eldad Perahia
Intel
Corporation
2111 NE 25th Ave
Hillsboro, OR 97124
503-712-8081
[email protected]
Submission
Slide 1
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Overview
• Initial presentation to the EC in July 2008
– 11-08-813-01
• Details here in provide an update to the VHT60 PAR
since the EC meeting in July 2008 in Denver
Submission
Slide 2
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Summary of Updates
•
•
•
Several joint calls/meetings with 802.15.3c since July
Strong support for new coexistence wording based on strawpoll (85-0-2) in
joint meeting between VHT60 and 802.15.3c, Monday Sept 8th
Key updates made to four sections since July:
–
–
–
–
•
•
•
•
5.2 PAR Scope – new coexistence wording
7.1 – reference 802.15.3c and ECMA TC48
17.5.4.1 – definition for coexistence and environment
8.1 - addition of response to 802.3 comment to add PICS statement
Next four slides show these changes in red
No objections raised in subsequent EC call on Oct 24 or on reflector
This resolves all concerns of 802.15.3c, WGs, and EC members to date
Link to PAR and 5Cs
– https://mentor.ieee.org/802.11/file/08/11-08-0806-07-0vht-60-ghzpar-nescom-form-plus-5cs.doc
Submission
Slide 3
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Update to PAR Scope
• 5.2 Scope of Proposed Standard: This amendment defines
standardized modifications to both the 802.11 physical layers
(PHY) and the 802.11 Medium Access Control Layer (MAC) to
enable operation in the 60 GHz frequency band (typically 57-66
GHz) capable of very high throughput. The MAC and PHY
specified in this amendment:
– Enables a maximum throughput of at least 1 Gbps, as measured at the
MAC data service access point (SAP)
– Enables fast session transfer between PHYs
– Maintains the 802.11 user experience
– Provides mechanisms that enable coexistence with other systems in the
band including IEEE 802.15.3c systems
Submission
Slide 4
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Update to 7.1
•
•
7.1 Are there other standards or projects with a similar scope? Yes
Explanation: There are 60 GHz PHY projects in 802.15.3c and ECMA TC48
•
•
•
•
Sponsor Organization: IEEE 802
Project/Standard Number: IEEE 802.15.3c
Project/Standard Date: 2009-09-30 (projected date)
Project/Standard Title: Part 15.3: Wireless Medium Access Control (MAC) and
Physical Layer (PHY) Specifications for High Rate Wireless Personal Area
Networks (WPANs): Amendment 2: Millimeter-wave based Alternative Physical
Layer Extension
•
•
•
•
Sponsor Organization: ECMA
Project/Standard Number: TC48 60 GHz
Project/Standard Date: 2008-12-31 (projected date)
Project/Standard Title: PHY and MAC layers for 60 GHz wireless network
Submission
Slide 5
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Update to 17.5.4.1
• 17.5.4.1 Coexistence of 802 wireless standards
specifying devices for unlicensed operation
• The working group will create a CA document as part
of the WG balloting process. The definition for
coexistence is as defined in 802.15.2, with the shared
environment being the 60 GHz band in home and
enterprise.
Submission
Slide 6
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Update to 8.1
• 8.1 Additional Explanatory Notes:
• 1.1) this is an amendment to the then current revision
of the IEEE standard 802.11, which will include a PICS
proforma
Submission
Slide 7
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Detailed History since July EC Meeting
Submission
Slide 8
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Update Since July EC meeting
• Bruce Kraemer, Bob Heile, Paul Nikolich and Steve
Shellhammer held a conference call on July 24
• Joint conference call with 802.15.3c on Aug 20 to
discuss VHT60 PAR
• VHT60 conference call on Aug 21 to discuss outcome of
joint call
• EC call on VHT60 on Sept 3
• VHT60 and joint meetings with 802.15.3c in September
in Waikoloa
• EC call on Oct 24 to discuss VHT60
Submission
Slide 9
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
EC Discussion following July Denver EC
meeting
•
http://grouper.ieee.org/groups/802/secmail/msg11073.html
– Bruce Kraemer, Bob Heile, Paul Nikolich and Steve Shellhammer held a
conference call on July 24 to discuss a path forward for the 802.11 VHT60 PAR
– Proposed modifications to VHT60 PAR
• A stronger declaration of coexistence with 802.15.3c in the Scope of the PAR. Possible
wording that could be used is the wording used in the motion to amend during the closing
EC meeting, Replace the text "Addresses coexistence with other wireless systems" with
the text "Ensure coexistence with IEEE 802.15.3c.“
• Adding a definition of coexistence in the Additional Notes section. One possible definition
is the definition in 802.15.2, which was approved by both the 802.11 and 802.15 working
groups.
• Adding 802.15.3c and ECMA TC48 to section 7.1 (Projects will similar scope) of the PAR
•
http://grouper.ieee.org/groups/802/secmail/msg11085.html
– “It has been brought up by several people that the term "ensure" is almost a
synonym for "guarantee" which was not the intention.”
– New VHT60 scope wording proposal by Steve Shellhammer
• Supports mechanisms to enable coexistence with IEEE 802.15.3c
Submission
Slide 10
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Review of VHT60 Aug 20 joint conference
call with 802.15.3c
• Discussion on replacing coexistence scope statement
with “Supports mechanisms to enable coexistence with
IEEE 802.15.3c and with other systems in the band”
– Several proposed permutations of wording
• Added 802.15.3c and ECMA TC48 to Section 7.1 (Are
there other standards or projects with a similar scope?)
Submission
Slide 11
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Review of VHT60 Aug 21 conference call
•
•
Reviewed all proposed permutations of coexistence scope statement from
Aug 20 joint conference call with 802.15.3c
Ran electronic strawpolls (results in brackets, 20 participants total)
– SP1
• Preferred wording for coexistence in VHT60 PAR scope, choose one or more
– Addresses coexistence with other systems in the band (5)
– Ensure coexistence with IEEE 802.15.3c (1)
– Supports mechanisms to enable coexistence with IEEE 802.15.3c and with other systems in the
band (7)
– Includes mandatory mechanisms to enable coexistence with IEEE 802.15.3c and with other systems
in the band (11)
– Provides mechanisms to enable coexistence with IEEE 802.15.3c and with other systems in the band
(12)
– Mandates mechanisms to enable coexistence with IEEE 802.15.3c and with other systems in the
band (7)
– SP2
• Should similar coexistence language be added to the 802.15.3c PAR scope?
–
–
–
Submission
Yes (17)
No (1)
Abs (2)
Slide 12
Eldad Perahia, Intel Corporation
November 2008
•
doc.: IEEE 802.11-08/0813r3
Review of Sept 3 EC call on VHT60
Discussion items
– New scope wording based on VHT60 straw poll option with most vote “Provides
mechanisms to enable coexistence with IEEE 802.15.3c and with other systems in
the band”
• 802.19 chair was supportive
• No objections were raised to the wording by EC members on the call
– Adding symmetrical coexistence wording to 802.15.3c PAR
• Objection from one member of 802.15
• Timeline of 802.15.3c raised as concern
–
If recirculation letter ballot goes well, could go to sponsor ballot in November
– Definition of coexistence
• EC suggested including in PAR (common) 802 definition for coexistence
• Could use 802.15.2 definition, “The ability of one system to perform a task in a given
shared environment where other systems have an ability to perform their tasks and may or
may not be using the same set of rules.”
• Reference definition in VHT60 PAR
– Description of “shared environment”
•
•
•
•
•
High level definition of shared environment requested
Would be used in order to determine whether coexistence was achieved
Discussion on level of detail necessary in a PAR/5C’s
VHT60 should add description of environment in 5C’s
New work items for VHT60
– Definition of coexistence
– Description of environment
Submission
Slide 13
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
VHT60 meeting, Monday Sept 8th 13:30 –
15:30
• Discussion on modifications to PAR
• Strawpoll scope coexistence statement (choose one or
more)
• The MAC and PHY specified in this amendment:
– Provides mechanisms to enable coexistence with IEEE 802.15.3c
and with other systems in the band (0)
– Provides mechanisms that enable coexistence with IEEE 802.15.3c
and with other systems in the band (0)
– Provides mechanisms that enable coexistence with other systems in
the band including IEEE 802.15.3c systems (24)
Submission
Slide 14
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Further Coexistence modifications
• Modify 17.5.4.1 (Coexistence of 802 wireless standards specifying
devices for unlicensed operation)
• Reference 802.15.2 definition: “The ability of one system to
perform a task in a given shared environment where other systems
have an ability to perform their tasks and may or may not be using
the same set of rules.”
• Environment description: 60 GHz band in home and enterprise
• Proposal:
– 17.5.4.1 Coexistence of 802 wireless standards specifying devices for
unlicensed operation
The working group will create a CA document as part of the WG balloting
process. The definition for coexistence is as defined in 802.15.2, with the
environment being 60 GHz band in home and enterprise
Submission
Slide 15
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
Joint meeting with 802.15.3c, Monday Sept
8th 19:30 – 21:30
• Discussion
– Steve Shellhammer – perhaps change 17.5.4.1 from “environment”
to “shared environment”
– James Gilb – change 802.15.3c date in 7.1 to Sept 2009
• Strawpoll:
– Are the proposed changes to 5.2 Scope “Provides mechanisms that
enable coexistence with other systems in the band including IEEE
802.15.3c systems” acceptable?
• Yes: 85
• No: 0
• Abs: 2
• 138 people in the room at time of strawpoll
Submission
Slide 16
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
EC call on October 24
• No objections or issues raised regarding VHT60 PAR in
08/806r6
Submission
Slide 17
Eldad Perahia, Intel Corporation
November 2008
doc.: IEEE 802.11-08/0813r3
PAR Changes due to Feedback on PAR on
Nov 11
• Feedback Received on 802.11ad PAR from 802.3:
– It is noted that IEEE Std 802.11 includes PICS proforma, and
believed that these have consistently been included with the initial
addition of functionality to the base standard. The WG is asked to
consider including a commitment to provide PICS on
enhancements such as this within the project documents.
• Response:
– 802.11 has included a statement into 8.1. We have added to the
end of the last sentence :
• …which will include a PICS proforma.
Submission
Slide 18
Eldad Perahia, Intel Corporation