Meeting Minutes for 802.15 WNG
January, 2007 doc.: IEEE 802. 15-07-0548-01-wng0
IEEE P802.15
Wireless Personal Area Networks
Project / IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Title / Minutes for 802.15 WNG Meeting in Hilton London Metropole, UK.
Date Submitted / 15th of January, 2007
Source / [Arthur W. Astrin, Ph.D.]
[Astrin Radio.]
[Palo Alto, CA, 94301, USA] / Voice: [+1 650 704-2517]
Fax: [+1 650 328-7721]
E-mail: [
Re: / 802.15 WNG Meeting
Abstract / The document contains a summary of the work of the 802.15.wng task group during the week of 15th of January, 2007.
Purpose / Official minutes of the 802.15 SC WNG.
Notice / This document has been prepared to assist the IEEE P802.15. 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 P802.15.
Hilton London Metropole, UK
January 2007
Monday Session
10:30 PM Meeting called to order by the chair, Erik Schylander.
New attendees to wng: 11.
Attendance: 48
Chair discussed WGN Objectives and Agenda (15-06-0518-00-wng0), noting that there was one new presentation.
Agenda was approved by acclamation.
10:40 PM Approval of the meeting minutes from last meeting in Melbourne, the doc 15-06-0394-01-wng0
Agenda was approved by acclamation.
Following neither discussion nor objection the agenda was approved.
10: 42 Presentation by Mark Austin, Ofcom doc. 07-0541 European regulatory issues update
These questions were asked and Mark provided the answers afterwards:
Q. Will the duty cycle requirement of 1% be removed for all of EU in 868 – 868.6?
A. There has not been any mention of removing this requirement in this band as far as I am aware. Although all of the non-specific Short Range Device bands are now to be reviewed on a yearly basis as part of the process to update the EC Decision 2006/771/EC.
Q. Will the on-going ETSI work on a Systems Reference Document allow more channels for 4b in 865 – 868 MHz?
A. The ETSI document is looking to segregate the 865 – 868 MHz band so it is split between RFID and non specific Short Range Devices. If this is successful at EU level then there should be more channels available for 4b.
Q. What is SRD? Short Range Device also System Reference Document is called SRDoc
A. SRD is an acronym for Short Range Device which encompass a number of non specific uses. The SRDoc is an acronym for the System Reference Documents which ETSI have to produce under the MOU agreements with CEPT when looking for spectrum allocations.
Q. RFID does not fall into SRD? What is coex of 15.4 with RFID.
A. SRD is a generic term which could include RFID as a subset if the RFID meet the parameters for SRD. Co-existence in non-specific SRD allocations is normally maintained by using either LBT or duty cycle limitations.
Q. 802.15.4 is currently restricted to a single channel with 1% duty cycle at 868.3 MHz in Europe. This is quite a restriction compared with 10 channels with 100% duty cycle at 915MHz in the US. ?
A. 802.4 if it meets the requirements stated could use all of the non-specific SRD bands harmonised under the EC Decision 2006/771/EC. See slide 3 of this presentation for details.
Q. It would be great if we could have enhance 15.4 in Europe with a) more channels and b) more duty cycle. Is there a common set of channels which could be used across Europe? Are there any common channels that can be used at 100% duty cycle, and if so, at what power level?
A. All of the non-specific Short Range Device bands are now to be reviewed on a yearly basis as part of the process to update the EC Decision 2006/771/EC. Any requests from 802.15 for more spectrum should go into this process.
Q. I think that ETSI specifies a LBT scheme - I am interested how this compares with 802.15.4 CSMA
A. ETSI specify different LBT schemes dependent upon the sub band it covers. The LBT scheme used in the RFID harmonised standard EN 302 208 has max transmit power levels which are dependent upon the LBT threshold used. This is similar to DFS in RLANs. DO not have access to the information on all of the LBT schemes used for non specific SRD allocations but it may be a worthwhile exercise to do for the March meeting.
Any further questions should be sent to
Email with questions.
10:57 Chair adjourned the meeting to Orlando in March, 2007.
There were 48 people attending.
Documents & Contributions:
15-06-0518-00-wng0-wng-objectives-and-agenda-jan-2007-meeting.xls
15-06-0507-01-wng0-minutes-802-15-wng-meeting-in-nov-2006
15-06-0541-00 wng0- European regulatory issues update
Submission Page XXX Arthur W. Astrin, Astrin Radio