1. Project: IEEE 802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [TGn Report Nov08]
Date Submitted: [13Nov08]
Source: [John Barr] Company [Motorola]
Address [1303 E. Golf Road, Schuamburg, IL 60196]
Voice:[ ], FAX: [ ],
Re: []
Abstract: [November TGn Report]
Purpose: [November TGn Report]
Notice: This document has been prepared to assist the IEEE It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.
Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by
November 2008
doc.: IEEE /0830r0
Dr. John R. Barr, Motorola
John Barr, Motorola

2. What Really Happened in Dallas
Serious Consideration of Letter Ballot Comments Leading to Improvements Of n Draft
Dr. John R. Barr, Motorola

3. TGn - LB136 – Comments (48 Total)
Bruce Kraemer, Marvell
November 2008

4. TGn - LB 136 Ad hoc Documents
November 2008
doc.: IEEE /1297r5
November 2008
TGn - LB Ad hoc Documents
Ad hoc
CID
count
Resolution Spreadsheet
Report (ppt)
Resolutions (doc)
Sunday, Nov 9, 2 pm
Beam
Coex
1237 r0
1288 r0
Gen
1219 r1
BEAM + PHY
MAC
1220 r2
1221 r1
Editor
1209 r0
Composite
1208 r2
Bruce Kraemer, Marvell
Bruce Kraemer, Marvell

5. TGn - Tuesday pm1 Motions
July 2008
November 2008
doc.: IEEE /1297r5
doc.: IEEE /0748r5
TGn - Tuesday pm1 Motions
Ad hoc
Motions
CID
count
Resolution Spreadsheet
Report Doc
Beam
Coex
Gen 1 4
1219 r2
PHY
MAC 7
1220 r3
1221 r2
Editor
Slide 5
Bruce Kraemer, Marvell
Bruce Kraemer (Marvell), Sheung Li (SiBEAM)
Page 5
Bruce Kraemer, Marvell

6. TGn - Wednesday am1 Agenda
November 2008
doc.: IEEE /1297r5
November 2008
TGn - Wednesday am1 Agenda
Additional-40-MHz-Scanning-Proposal.ppt
John Barr 20
Robust Bluetooth Detection using n Energy Detector
Steve Shellhammer r1
Listen Before Talk Issues r1
Tutorial on the 40MHz coexistence mechanisms in n
Eldad Perahia
Other Discussion
Bruce Kraemer, Marvell
Bruce Kraemer, Marvell

7. TGn - January Meeting Topics
Comment Resolution
40 MHz Coexistence
PHY tutorial – Pat Kinney
Bluetooth AFH tutorial – John Barr
Correlation between and Bluetooth – Barr
Test results for n and Goyal-U Wisc
Bruce Kraemer, Marvell

8. TGn Timeline – Best Prediction
November 2008
doc.: IEEE /1297r5
November 2008
TGn Timeline – Best Prediction
Event Name
Accepted Dates
Actual
Currently Approved
Accepted
PAR Approved
Sep ‘03
Initial WG Letter Ballot
Mar ‘06
Recirculation WG Letter Ballot
Oct ‘07
Form Sponsor Ballot Pool
Jul ‘08
Initial Sponsor Ballot
Nov ‘08
Jan ‘09
Recirculation Sponsor Ballot
May ‘09
Final WG Approval
Jul ‘09
Nov ‘09
Final EC Approval
RevCom/ Stds Board Approval
Sep ‘09
Jan ‘10
Publication
Mar ‘10
Bruce Kraemer, Marvell
Bruce Kraemer, Marvell

9. Background - “non-802.11 radio scan”
Front end of n radio can be used to detect features of and radios with minimal cost impact.
IEEE (Bluetooth) wireless devices utilize a low cost scanning mechanism to detect presence of frequency hopping signals with pseudo-random hopping sequences.
IEEE (Zigbee) wireless devices use energy detection and feature recognition to detect devices.
A combination of these methods can be used to define the “non radio scan” algorithm and detection limits.
Similar to DFS algorithm used for radar detection
Detection limits based on expected signal level of non radio within range of likely interference by 40 MHz n transmissions (e.g., 2-3m).
Confirmation of algorithm and detection limits from at least Bluetooth SIG and Zigbee Alliance.
John R. Barr, Motorola, Inc.

10. “non-802.11 radio scan update”
Add clause defining “non radio scan”:
The “non radio scan” shall be able to detect presence of 1 MHz GFSK transmissions in channels centered on f=2402+k MHz for k=0..78 with a power level greater than –35 dBm that appear on at least 20 channels in a 100 mSec time period, and 5 MHz DSSS O-QPSK transmissions with a 2 MHz chip rate in channels centered on f= (k-11) MHz for k=11-26 with a power level greater than –38 dBm that appear on channels affected by the proposed 40 MHz channel in a 100 mSec time period. If either transmissions are detected “non radio scan” result is positive otherwise it is negative.
John R. Barr, Motorola, Inc.

11. Proposed Text (Peter Loc)
In subclause , use the reserved bit B3 of the Extended Capabilities field for the HT AP or HT STA to declare its support for non radio scans.
In subclause , insert after line 12 , page 223:
Before an AP or STA that is capable of detecting non radios (bit B3 of the Extended capabilities field is set to 1) starts a 20/40 MHz BSS, it shall perform a non radio scan to search for non radios.
In subclause , insert after line 65 , page 223, the following:
An FC HT AP 2G4 that is capable of detecting non radios shall keep the value of 20/40 Operation Permitted to FALSE if presence of non radio is detected.
Insert the following paragraph at the end of subclause , page 230, after line 13
An FC HT STA 2G4 that is associated with an FC HT AP 2G4 and is capable of performing non radio scans (bit B3 of the Extended Capability field is set to 1) shall perform at least one non radio scan every dot11BSSWidthTriggerScanInterval seconds., unless the FC HT STA 2G4 satisfies the conditions described in
In subclause , change “dot11FortyMHzIntolerant is TRUE” to “dot11FortyMHzIntolerant is TRUE or dot112G4RadioScanEnabled is FALSE”
TBD - Add dot112G4RadioScanEnabled in appropriate places and define as performance of non radio scan
John R. Barr, Motorola, Inc.

12. Coex Resolution from 08/1400r1
Reject - The group does not feel that the issue of additional degradation in BT performance when devices are operating in 40 MHz compared to 20 MHz is significant enough to make a further change to the draft.
Recognizing it is advantageous to detect and avoid interference caused to other users of the unlicensed spectrum, there is a mechanism known as CCA that does detect any narrowband or broadband energy (including and ) in the channel and defers transmission of both 20 MHz and 40 MHz. Furthermore, product vendors have already developed and will continue to improve coexistence mechanisms as allowed by the 11n amendment.
Dr. John R. Barr, Motorola