1. 13 May 2009
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Battery Operated Sensing Device Requirements for g]
Date Submitted: [12 May 2009]
Source:
[Mark Thompson, Kendall Smith] Company [Aclara RF]
Address [23905 Mercantile Rd., Beachwood, OH 44122] Voice:[ ]
Re: [IEEE g Working Group]
Abstract: Discussion of a proposal to add provisions for Battery Operated Sensing Devices.
Purpose: To allow for battery operation in g network
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 P
Kendall Smith, Mark Thompson, Aclara RF

2. Aclara RF PHY Our PHY is completely different
13 May 2009
Aclara RF PHY
Our PHY is completely different
Not here to propose our PHY
Kendall Smith, Mark Thompson, Aclara RF

3. What has worked? Low background noise High power signals
13 May 2009
What has worked?
Low background noise
High power signals
Slow data rates
Redundancy
Protection of radio channel(s)
Battery and powered endpoints
“Unlimited” scalability
Kendall Smith, Mark Thompson, Aclara RF

4. 13 May 2009
Link Budget
+154 dBm
Kendall Smith, Mark Thompson, Aclara RF

5. Battery Life What do utilities want:
13 May 2009
Battery Life
What do utilities want:
20 year battery life
10 years is too small
Service calls to replace batteries are unacceptable, endpoint should last as long as the equipment it is attached to
Millions of deployed devices in service
Kendall Smith, Mark Thompson, Aclara RF

6. 13 May 2009
Battery Life
What techniques can be used in a MAC/PHY design to allow for long battery life
Fast network acquisition and association
lower freq = lower power = better propagation
Rx sense lower, overcome with tx power
short messages ~8 octets
allow one way operation
Kendall Smith, Mark Thompson, Aclara RF

7. 13 May 2009
To Achieve Low Power
MAC changes that support the low energy devices must supported and pushed by the 4g group
TG4e
Kendall Smith, Mark Thompson, Aclara RF

8. 13 May 2009
TG4e PAR
5.2 Scope of Proposed Standard: The intent of this amendment is to enhance and add functionality to the MAC to a) better support the industrial markets and b) permit compatibility with modifications being proposed within the Chinese WPAN. Specifically, the MAC enhancements are limited to: • TDMA: to provide a) determinism, b) enhanced utilization of bandwidth • Channel Hopping: to provide additional robustness in high interfering environments and enhance coexistence with other wireless networks • GTS: to increase its flexibility such as a) supporting peer to peer, b) the length of the slot, and c) number of slots • CSMA: to improve throughput and reduce energy consumption • Security: to add support for additional options such as asymmetrical keys • Low latency: to reduce end to end delivery time
Kendall Smith, Mark Thompson, Aclara RF

9. TG4e 4e Low Energy Study Group Thursday PM Session 13 May 2009
Kendall Smith, Mark Thompson, Aclara RF

10. Presentations Supporting Battery Ops
13 May 2009
Presentations Supporting Battery Ops
Aclara
NICT
Fuji
Mistubishi TI
Sensus
Elster
Itron
Kendall Smith, Mark Thompson, Aclara RF

11. 13 May 2009
TG4g – TG4e
Assuming Battery Operated Devices in initial SUN standard - then, MAC changes to TG4e relating to Low Energy operations must be completed in parallel
This is a critical and urgent component of g
Kendall Smith, Mark Thompson, Aclara RF

12. Spectrum PAR calls for license exempt spectrum frequency bands
13 May 2009
Spectrum
PAR calls for license exempt spectrum frequency bands
Countries like Canada, Japan, and the UK are allocating dedicated use spectrum for utilities
Fits within the spirit of the PAR
The PHY should be able to use that flexible spectrum as it becomes available
Kendall Smith, Mark Thompson, Aclara RF

13. What has worked? How to achieve in SUN?
13 May 2009
What has worked? How to achieve in SUN?
Low background noise
High power signals
Slow data rates
Redundancy
Protection of radio channel(s)
Battery and powered endpoints
“Unlimited” scalability
Kendall Smith, Mark Thompson, Aclara RF

14. Suggestions Low background noise High power signals Slow data rates
13 May 2009
Suggestions
Low background noise
Allow operation on “dedicated” or licensed bands
High power signals
Slow data rates
Allow flexibility in speed / range tradeoffs
Kendall Smith, Mark Thompson, Aclara RF

15. Suggestions Redundancy Protection of radio channel(s)
13 May 2009
Suggestions
Redundancy
Allow increased range to permit economical redundancy
Protection of radio channel(s)
Allow operation on “dedicated” or licensed bands
Kendall Smith, Mark Thompson, Aclara RF

16. Suggestions Battery and powered endpoints “Unlimited” scalability
13 May 2009
Suggestions
Battery and powered endpoints
Insure that appropriate MAC changes are enacted with SUN release
Insure that power consuming behaviors are not mandated
“Unlimited” scalability
Kendall Smith, Mark Thompson, Aclara RF

17. 13 May 2009
Thank you
Kendall Smith, Mark Thompson, Aclara RF