1. Submission Title: IEEE802.15.3: Power Save Proposal
Dr. Bill Shvodian
Jan. 2002
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: IEEE : Power Save Proposal
Date Submitted: 23 January, 2002
Source: Dr. William Shvodian
Company: XtremeSpectrum, Inc.
Address: 8133 Leesburg Pike, Suite 700, Vienna, VA 22182
Voice: , FAX: ,
Re: [ Power save mechanism in TG3-MAC ]
Abstract: This provides a comparison of the proposed power save mechanism for TG3-MAC.
Purpose: To provide information for comment resolution of LB12
Notice: This document has been prepared to assist the IEEE P 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
Dr. William Shvodian

2. Complexity of EPS in D09 11 power management primitive parameters
Jan. 2002
Complexity of EPS in D09
11 power management primitive parameters
6 power management commands
Multiple commands (and Beacons) required for entering EPS mode
Power Management Information Element – Where is this ever used?
7 full pages of text in Clause 8.
Very difficult to understand, much less implement.
Violates the KISS principal.
Dr. William Shvodian

3. Jan. 2002
Complexity of EPS in D09
PNC needs to change CTAs for every DEV in each EPS set twice per sleep interval
Critical timing interaction required between Beacon contents and Beacon transmission time
Multiple areas of the standard have been modified and complicated in the name of power management (CTRB, CTA)
Requires unspecified upper layer negotiation for EPS set configuration and maintenance
Dr. William Shvodian

4. Things that PNC must maintain for EPS
Dr. Bill Shvodian
Jan. 2002
Things that PNC must maintain for EPS
Members of EPS Set
EPS Set Value (1 octet)
EPS Set Members (1 octet per member)
EPSTime (2 octets) & associated timer(s)
EPSNext (2 octets)
ATP
Streams associated with the EPS Set
CTAs for each DEV in the EPS set
CTAs: Active, EPS, Null
4+ EPS action types
Dr. William Shvodian

5. Gubbi Alternative Power Save Proposal
Jan. 2002
Gubbi Alternative Power Save Proposal
No IP
2 or 3 command types
2 MLME primitive parameters
3 total commands – single exchange to enter sleep
1 EPS mode
1 type of CTA
PNC only has to track ATP.
PNC does nothing but receive Sleep Continue frames if DEVs stay in EPS mode
PNC only has to change CTAs when DEV wakes
Easy to understand, easy to implement, low complexity, low power for both DEV and PNC
Dr. William Shvodian

6. Jan. 2002
Recommendation
Adopt Gubbi proposed text as the new power save baseline.
Dr. William Shvodian