May2008 IEEE P802.19-08/0014r2

IEEE P802.19

Wireless Coexistence

Project / IEEE P802.19 Coexistence TAG
Title / 60 GHz Conference Call Minutes
Date Submitted / [May 29, 2008]
Source / [Stephen J. Shellhammer]
[Qualcomm, Inc.]
[5775 Morehouse Drive]
[San Diego, CA92121] / Voice:[(858) 658-1874]
Fax:[(858) 651-3004]
E-mail:[
Re: / []
Abstract / [Conference Call Minutes]
Purpose / []
Notice / This document has been prepared to assist the IEEE P802.19. 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 P802.19.

1Conference Call Times

Date / Start Time / End Time
April 29 / 8:30 PM Eastern Time / 9:30 PM Eastern Time
May 8 / 8:30 PM Eastern Time / 9:30 PM Eastern Time
May 29 / 8:30 PM Eastern Time / 9:30 PM Eastern Time

2Attendance

Participant / Affiliation / April 29 / May 8 / May 29
Donald Bouchar / Aerospace / X
Scott Blue / Sensible Radio / X
Douglas Chan / Cisco / X / X
Reed Fisher / Oki Electric / X / X / X
Bemini Hennadige / Atheros / X
Joel Johnson / OhioStateUniversity / X / X / X
Naveen Kakani / Nokia / X
Shu Kato / NICT / X
Rich Kelley / CSC Noaa / X
Bruce Kramer / Marvel / X / X
Joe Levy / Interdigital / X
Shung Li / SiBeem / X
Abbie Mathew / Newlans / X
Janath Peiris / Atheros / X / X
Eldad Perahia / Intel / X / X / X
Ivan Reede / Amerisys / X
Rick Roberts / Intel / X
Phil Rosenkranz / MIT / X / X
Steve Shellhammer / Qualcomm / X / X / X
Jason Trachewsky / Broadcomm / X

3Minutes from April 29 2008 Conference Call

3.1Agenda

  • Attendance (Steve)
  • Check to see if anyone is not familiar with the IEEE patent policy
  • Presentation on Coexistence Issues for Passive Earth Sensing (Joel Johnson)
  • Next Steps
  • New business
  • Notes
  • Joel Johnson presented document 802.19-00/13r0 on Coexistence Issues for Passive Earth Sensing
  • SIR for passive earth sensing comes down to the spatial density of the 60 GHz wireless devices and the average EIRP of those devices pointing toward the satellite.
  • We need to consider the actual bandwidth of the 802 wireless device versus the 100 MHz bandwidth that was used in the presentation
  • Next Steps

-The 802 engineer can review the calculations in this presentation and see if they agree with the calculations

-Joel to check on the satellite antenna gain and report back to the group

  • Has anyone made any test using an actual 60 GHz transmitter on the ground?
  • There are two or three of these satellites in orbit that use this band
  • There are a number of parameters that would need to be considered: gain in the direction of the satellite, the duty cycle of the wireless devices, actual bandwidth.
  • Shu Kato will prepare a presentation for next week
  • We will have another call on Tuesday May 6 at 8:30 PM EDT (5:30 PM PDT)

4Minutes from May 8, 2008 Conference Call

4.1Agenda

  • Attendance (Steve)
  • Check to see if anyone is not familiar with the IEEE patent policy
  • Updated Presentation on Coexistence Issues for Passive Earth Sensing (Joel Johnson)
  • Next Steps
  • New business
  • Notes
  • We discussed the interpretation of the 0.1% area/time specification
  • Focus on Nadiral for AMSU since it appears to be the worst case situation
  • WCAI is planning to use the 60 GHz band for high-power outdoor point-to-point links
  • Each 802.15.3c device has a bandwidth a little less than 2 GHz
  • It is possible to off-line processing of the satellite data. Small interference is hard to detect and hence hard to develop a off-line processing technique to exclude this blip in interference
  • The model does not yet include building penetration
  • Typical transmit power is 10 mw (10 dBm)
  • Eldad suggests a typical antenna gain would no greater than 15 dB
  • Reed Fisher to send out some references on building penetration losses at 60 GHz

5Minutes from May 29, 2008 Conference Call

5.1Agenda

  • Attendance (Steve)
  • Check to see if anyone is not familiar with the IEEE patent policy
  • Discussion
  • New business
  • Notes
  • Shu Kato was not available to give his presentation
  • If Shu Kato develops his presentation then we can hold a conference call to review it. It would be useful to see if Shu’s analysis is consistent with Joel’s analysis
  • It seems that the group is converging to the decision that interference with Satellite Passive Earth Sensing will not be an issue
  • The group discussed the point-to-point 60 GHz links, which is not going on within the IEEE 802 organization
  • If Shu prepares a presentation we will have another conference call to discuss is

SubmissionPage 1Steve Shellhammer, Qualcomm, Inc.