1. doc.: IEEE 802.15-05-0194-00-004b TG4b March 2005 Robert Poor - Ember CorporationSlide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: TG4b Opening/Closing Report for Monterey, CA Date Submitted: March 2005 Source: Robert Poor, Ember Corporation Contact: Robert Poor, Ember Corporation Voice: +1 617 951-1231, e-mail: rpoor@ieee.org Re: TG4b Closing Report for March Session Abstract: Closing Report for the TG4b session in Atlanta, Georgia. Purpose:To provide information on define enhancements and corrections to the existing standard, IEEE 802.15.4-2003. 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.

2. doc.: IEEE 802.15-05-0194-00-004b TG4b March 2005 Robert Poor - Ember CorporationSlide 2 TG4b Scope This project will define enhancements and corrections to the existing standard. The revised standard will be backward compatible with IEEE P802.15.4-2003. The considered enhancements shall be limited to: A method for shared time-base distribution. Support for new frequency allocations for Europe, China, and Japan. Extension of 2.4GHz derivative modulation yielding higher data rates for the lower frequency bands. Mechanism for communicating the revision level.

3. doc.: IEEE 802.15-05-0194-00-004b TG4b March 2005 Robert Poor - Ember CorporationSlide 3 TG4b Scope (continued) The considered corrections are: Resolving ambiguities. Removing unnecessary complexity, such as making GTS support optional and eliminating BUSY_RX, BUSY_TX, and FORCE_TRX_OFF from the PHY enumerations. Resolving issues such as long association time for non-beacon networks, inflexible security use, adding support for multicast, reducing MAC overhead and MAC header compression.

4. doc.: IEEE 802.15-05-0194-00-004b TG4b March 2005 Robert Poor - Ember CorporationSlide 4 TG4b Purpose The purpose of this revision is to extend the market applicability of IEEE 802.15.4-2003 and to remove ambiguities in the standard. Implementations of the current approved standard have revealed potential areas of improvements. Additional frequency bands are being made available in various countries that are attractive for this application space.

5. doc.: IEEE 802.15-05-0194-00-004b TG4b March 2005 Robert Poor - Ember CorporationSlide 5 Meeting Objectives Review Letter Ballot Done. Comment Resolution Done. Prepare Motion for Recirculation Ballot Deferred. Revise Schedule Done. Joint Meeting with 802.19 Done.

6. doc.: IEEE 802.15-05-0194-00-004b TG4b March 2005 Robert Poor - Ember CorporationSlide 6 Letter Ballot, Comment Resolution Letter Ballot Results: Y/N/A: 177/18/22 (91%, 9%, 10%) Week Start: 1196 Comments: E/T/TR: 680/370/146 Week End: PHY: ALL TRs examined, all have proposed solution MAC: ALL TRs examined, all have proposed solution Security: 12 TRs have proposed solutions, 3 deferred, 18 remain open.

7. doc.: IEEE 802.15-05-0194-00-004b TG4b March 2005 Robert Poor - Ember CorporationSlide 7 Schedule will slip by 3 months We will request recirculation ballot at Cairns in May Revised schedule includes an extra recirculation ballot. Target Rev Com approval in June 06. Twice-weekly conference calls to resume 24 March (Thursdays) and 28 March (Mondays)

8. doc.: IEEE 802.15-05-0194-00-004b TG4b March 2005 Robert Poor - Ember CorporationSlide 8 Document Roadmap This Closing Report: 15-05-0194-00-004b TG4b Minutes: tba LB4b Status: 15-05-0147-00-004b TG4b Timeline: 15-04-0237-07-004b

9. doc.: IEEE 802.15-05-0194-00-004b TG4b March 2005 Robert Poor - Ember CorporationSlide 9 Ad Hoc Meetings TG4b will hold hoc meetings on May 2-3 and June 20-21 for the purpose of Letter Ballot comment resolution. Note: May 1-2 meeting tentatively scheduled for Boston, Massachusetts. June 20-21 meeting tentatively scheduled for Oslo, Norway.