1. Proposed Modifications to VHT60 PAR
April 2007
doc.: IEEE /0570r0
September 2008
Proposed Modifications to VHT60 PAR
Date:
Authors:
Eldad Perahia, Intel Corporation
Eldad Perahia, Intel Corporation

2. April 2007
doc.: IEEE /0570r0
September 2008
Abstract
Proposed modifications to VHT60 PAR based on Executive Committee discussions
R1: updated project dates in 7.1
R2: updated with review from VHT60 Aug 21 call and Sept 3 EC call; new wording
R3: updated scope based on Sept VHT60 discussion
Eldad Perahia, Intel Corporation
Eldad Perahia, Intel Corporation

3. EC Discussion following Denver EC meeting
September 2008
EC Discussion following Denver EC meeting
Bruce Kraemer, Bob Heile, Paul Nikolich and Steve Shellhammer held a conference call on July 24 to discuss a path forward for the VHT60 PAR
Proposed modifications to VHT60 PAR
A stronger declaration of coexistence with c 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 c.“
Adding a definition of coexistence in the Additional Notes section. One possible definition is the definition in , which was approved by both the and working groups.
Adding c and ECMA TC48 to section 7.1 (Projects will similar scope) of the PAR
Eldad Perahia, Intel Corporation

4. Subsequent EC discussion on “ensure coexistence”
September 2008
Subsequent EC discussion on “ensure coexistence”
“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 c
Eldad Perahia, Intel Corporation

5. Old Proposed Changes to PAR (1/2)
September 2008
Old Proposed Changes to PAR (1/2)
5.2 Scope of Proposed Standard: The scope of this project is to define an amendment that shall define standardized modifications to both the physical layers (PHY) and the Medium Access Control Layer (MAC) to enable operation in the 60 GHz frequency band (typically 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 user experience
Supports mechanisms to enable coexistence with IEEE c Addresses coexistence and with other systems in the band
Eldad Perahia, Intel Corporation

6. Proposed Changes to PAR (2/2)
September 2008
Proposed Changes to PAR (2/2)
7.1 Are there other standards or projects with a similar scope? No Yes
Explanation: There are 60 GHz PHY projects in c and ECMA TC48
Sponsor Organization: IEEE 802
Project/Standard Number: IEEE c
Project/Standard Date: (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: (projected date)
Project/Standard Title: PHY and MAC layers for 60 GHz wireless network
Eldad Perahia, Intel Corporation

7. Review of VHT60 Aug 21 conference call
September 2008
Review of VHT60 Aug 21 conference call
Reviewed all proposed permutations of coexistence scope statement from Aug 20 joint conference call with c
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 c (1)
Supports mechanisms to enable coexistence with IEEE c and with other systems in the band (7)
Includes mandatory mechanisms to enable coexistence with IEEE c and with other systems in the band (11)
Provides mechanisms to enable coexistence with IEEE c and with other systems in the band (12)
Mandates mechanisms to enable coexistence with IEEE c and with other systems in the band (7)
SP2
Should similar coexistence language be added to the c PAR scope?
Yes (17)
No (1)
Abs (2)
updated project dates in 7.1
Eldad Perahia, Intel Corporation

8. Review of Sept 3 EC call on VHT60
September 2008
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 c and with other systems in the band”
chair was supportive
No objections were raised to the wording by EC members on the call
Adding symmetrical coexistence wording to c PAR
Objection from one member of
Timeline of c 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 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
Description of environment
Slide 8
Eldad Perahia, Intel Corporation
Eldad Perahia, Intel Corporation

9. Proposed Changes to Scope from Aug 21
September 2008
Proposed Changes to Scope from Aug 21
5.2 Scope of Proposed Standard: The scope of this project is to define an amendment that shall define standardized modifications to both the physical layers (PHY) and the Medium Access Control Layer (MAC) to enable operation in the 60 GHz frequency band (typically 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 user experience
Provides mechanisms to enable coexistence with IEEE c Addresses coexistence and with other systems in the band
Eldad Perahia, Intel Corporation

10. Strawpoll in VHTSG on Sept 9 2008
September 2008
Strawpoll in VHTSG on Sept
Strawpoll (choose one or more)
The MAC and PHY specified in this amendment:
Provides mechanisms to enable coexistence with IEEE c and with other systems in the band (0)
Provides mechanisms that enable coexistence with IEEE c and with other systems in the band (0)
Provides mechanisms that enable coexistence with other systems in the band including IEEE c systems (24)
Eldad Perahia, Intel Corporation

11. New Proposed Changes to Scope
September 2008
New Proposed Changes to Scope
5.2 Scope of Proposed Standard: The scope of this project is to define an This amendment that shall defines standardized modifications to both the physical layers (PHY) and the Medium Access Control Layer (MAC) to enable operation in the 60 GHz frequency band (typically 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 user experience
Provides mechanisms that enable coexistence with other systems in the band including IEEE c systems
Eldad Perahia, Intel Corporation

12. Further Coexistence modifications
September 2008
Further Coexistence modifications
Request from EC during Sept 3rd call to provide definition of coexistence and description of environment
Modify (Coexistence of 802 wireless standards specifying devices for unlicensed operation)
Reference 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:
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 , with the environment being 60 GHz band in home and enterprise
Eldad Perahia, Intel Corporation

13. Joint meeting between VHT60/15.3.c on Monday 19:30-21:30
September 2008
Joint meeting between VHT60/15.3.c on Monday 19:30-21:30
08/988r3
Discussion
Steve Shellhammer – perhaps change working from “environment” to “shared environment”
James Gilb – change c 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 c systems” acceptable?
Yes: 85
No: 0
Abs: 2
138 people in the room at time of strawpoll
Eldad Perahia, Intel Corporation