June 2005 doc.: IEEE 802.11-05/0550r1

IEEE P802.11
Wireless LANs

IEEE 802.11n Single Stream Ad-hoc Committee June 1 teleconference minutes
Date: 2005-06-07
Author(s):
Name / Company / Address / Phone / email
Timothy P Wakeley PE / Hewlett Packard / 8000 Foothills Blvd, MS5558
Roseville, CA 95747 USA / (916) 785-1619 /


June 15 802.11n Ad-Hoc Minutes:

Everyone send private e-mail to Marc and Tim to gather e-mails and names

Round table of attendee’s names

  1. 11-05-0559 – working assumptions from first meeting
  1. Review of last teleconference
  1. Discussion on alternate proposal from Airgo
  1. Discussion on data rate for 11s mesh points. Device only needs to demonstrate one set of conditions that meets 50Mbps. Ask proposal groups to verify 50Mbps for one spatial stream.
  1. Discussion on alternative approach: Rely on WFA to define single stream device. 802.11n labeling
  1. PAR violation issue: 100Mbps mandatory in all devices or not? 11-04-0298, 100Mbps is mandatory mode in note. 11-02-798r7 PAR draft document. Official PAR has Paul Nikolich letter in front. Sept 12, 2003. Listed under WG_General, Active PARs, 11n. Section 18 not included. Might be an issue with FR9. Marc will talk to Stuart Kerry
  1. Enable WFA to define 11n classes of devices. Do not want 11g devices relabelled as 11n. Range or other char to define sub-11n device. Adding new FR will be difficult. Need to decode STBC for example. 11a with mimo. Cannot have optional FR. FR should define what is in proposals not devices.
  1. Add FR10: Use verbage of FR2 and change to 50Mbps and single stream.
  1. Comment: First approach lowers data rate for all 11n devices. Second defines a sub-11n, non-11n labelled device. Second approach would leave it up to WFA to define classes of devices.
  1. Supporters of each approach will put together slides for next teleconference.

Attendees e-mails received:

Wilson, James Mike

Shellhammer, Stephen J

Huaning Niu

Jack Winters

VK Jones

Levy, Joseph S.

Eric Tokubo

Nico Vanwaes

Lusheng Ji

June 1 802.11n Ad-Hoc Minutes:

As a result of the Cairns meeting it has been decided to create an adhoc group whose charter is to provide recommendations for modifications to the TGn FR enabling support of one stream devices to be presented to next SF IEEE meeting.

The means for achieving this is to hold a conference call every two weeks.

Then the result of this adhoc group will be presented to the TGn body for a vote.

In order to accomplish that goal I propose to have a three step approach:

1) Define clearly the class of device we would like to hae an exemption on

2) Identify modifications on the FR (which ones)

3) Check consistency with the PAR

Everyone send private e-mail to Marc and Tim to gather e-mails and names

1.  Define the class of devices

2.  Functional requirements that need modification

3.  Review PAR

Class of devices discussions:

1.  Lower power and lower cost devices

2.  Stations only

3.  Handhelds only, IEEE 802.11 cannot define end product

4.  Get around 100Mbps requirement

5.  Chair believes every device needs to deliver 100 mbps per PAR

6.  Change FR and then talk about PAR later

7.  Stations only??

8.  Notebooks are borderline case??

9.  One stream definition – change to single TX chain device??

  1. 2 antenna can send STBC single stream

10.  Definition of spatial stream –

11.  Non-AP Stations is correct IEEE term

12.  Should define as single stream to allow 2 antenna STBC

13.  Exemption on throughput, say 50 Mbps

14.  Working assumption

  1. Non-AP single spatial stream

Functional requirements

1.  Throughput FR1

  1. Cannot reach 100Mbps with one stream
  2. Limit to at least 50Mbps, 76% MAC efficiency is feasible
  3. Group agrees to need for throughput requirement – 50Mbps
  4. FR8 already says 3b/Hz

2.  Throughput in 20MHz

Wording FR-1:

Demonstrate at least one set of conditions under which 100 Mbps at the top of the MAC SAP can be achieved for all devices except for non AP stations supporting only a single spatial stream transmission, for which 50 Mbps at the top of the MAC SAP must be demonstrated.

Provide all relevant information to document this.

Wording FR-2:

Proposal supports at least one mode of operation that supports 100 Mbps throughput at the top of the MAC SAP in a 20 MHz channel for all devices except for non AP stations supporting only a single spatial stream transmission, for which 50 Mbps at the top of the MAC SAP in a 20 MHz channel must be supported.

Provide all relevant information to document this.

Review PAR

FR-9: Must meet PAR and 5C

1.  Cannot say that a device will not meet PAR

2.  Review PAR

3.  Take up PAR discussion during next conference call

Move time of June 29 conference call one hour earlier.

Move teleconference to July 1, July 5, 6 or June 27 to avoid WFA meeting. Committee agreed to move June 29 call to July 6 one hour earlier.

Attendees:

Marc de Courville

Grandhi, Sudheer A.

Lusheng Ji

lobodan Nedic

Zeira, Eldad

Feinberg, Paul

Ikram, Muhammad

Huaning Niu

Pen Li

Daisuke Takeda

Jack Winters

Richard VanNee

Tal, Nir

Dave Hedberg

Nico Vanwaes

Wilson, James Mike

Darren McNamara

Tim Wakeley

Shellhammer, Stephen J

Yoshiharu Doi,

TK Tan

Richard Roy

Submission page 2 Timothy P Wakeley PE