1. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Fitting Smart Grid Applications and 802 Wireless Ecosystem]
Date Submitted: [12 May, 2008]
Source: [Jay Ramasastry] Company [Silver Springs Networks]
[Benjamin A. Rolfe] Company [Independent Consultant]
[George Flammer] Company [Silver Springs Networks]
Address [] Voice:[ ]
Re: []
Abstract: Review of what leads SSN to
Purpose: Contribution to Neighborhood Area Networks Interest Group (IG-NAN)
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
<author>, <company>

2. doc.: IEEE 802.15-<doc#>
05-May-2008
doc.: IEEE wng0
<month year>
doc.: IEEE <doc#>
Smart Grid and the 802 Wireless Ecosystem
Prepared By:
Jay Ramasastry
George Flammer
Silver Springs Networks
Benjamin Rolfe
Independent Consultant
May 12, 2008
IEEE
Interest Group:
Neighborhood Area Networks
Add Jay’s name
Rolfe/Flammer/Ramasastry
<author>, <company>

3. doc.: IEEE 802.15-<doc#>
05-May-2008
doc.: IEEE wng0
<month year>
doc.: IEEE <doc#>
Why
For Neighborhood Area Networks?
Rolfe/Flammer/Ramasastry
<author>, <company>

4. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
Outline
General Requirements Summary
802 Wireless Ecosystem
Reviewed:
3G/4G
802.16
802.11
802.20
802.22
802.15
Prefer:
802.15
Rolfe/Flammer/Ramasastry
<author>, <company>

5. Utility Network – General Requirements
<month year>
doc.: IEEE <doc#>
Utility Network – General Requirements
Wide Area Process Control
Low Data Volume
5-10 transactions per day per device
Low data rate, low duty cycle
Latency tolerance
Needs to be consistent/deterministic
Ubiquity
Every customer connected
Multiple devices per customer
Robustness
Perform under extreme environments
Tolerant of device placement rather than optimally placed for network
Consistency of performance
Cost Constrained
Acquisition – infrastructure cost
Deployment
Consistency across regions
Long term Cost of Ownership
Scalable
Millions per utility
Billions per country
Needed Right Now!
10kB per transaction. Talk to “spectrum friendly”. Lots of nodes.
Rolfe/Flammer/Ramasastry
<author>, <company>

6. Utility Networks Architecture
<month year>
doc.: IEEE <doc#>
Utility Networks Architecture
Talk to the MESH characteristics, multi-hop, etc.
Reference: wng0
Rolfe/Flammer/Ramasastry
<author>, <company>

7. Architectural Considerations
Mesh
Self forming and maintaining
Self-healing (pre-healing)
Multi-hop with large spans
Large number of end nodes
Peer to peer
Flexible topologies
Overlapping SOIs and SOPs
Heterogeneous network elements
Rolfe/Flammer/Ramasastry

8. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
802 Wireless Ecosystem
Rolfe/Flammer/Ramasastry
<author>, <company>

9. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
Standards Review
Rolfe/Flammer/Ramasastry
<author>, <company>

10. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
3G/4G
Licensed spectrum (cost, flexibility, risk)
Coverage
Dependence on service providers (and infrastructure)
Limited options per region
Inconsistent region to region – difficult to provide common solution everywhere
Inconsistent over time
Legacy requirements (voice, text, etc.) add complexity
Optimized for mass consumer network
Access not guaranteed
Reliability/Robustness can not be controlled
Part of the solution for backhaul
Consumer network; Utility has no control over other users of the same network; depend on network management of service providers. Performance not predictable. Can’t depend on carrier to meet connection requirements kept consistenly
Rolfe/Flammer/Ramasastry
<author>, <company>

11. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
/ WiMAX
Licensed spectrum
Architectural Complexity
Infrastructure based architecture
Designed for high data rate
Unlicensed WiMAX ?
No WiMAX profile (yet?)
Mobile
Licensed spectrum only (so far?)
Complimentary part of the solution
Backhaul
Rolfe/Flammer/Ramasastry
<author>, <company>

12. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
/ WiFi
Optimized for high data rate and high duty cycle
Complex to Mesh
Crowded space
Provisioning complexity
Perceived security/privacy concerns
Perceived as an open network (hotspot)
Robustness concerns
Metro WiFi
Inconsistent coverage => inconsistent solution
Complimentary part of the solution
Backhaul
Rolfe/Flammer/Ramasastry
<author>, <company>

13. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
802.20
Focus on Mobile Applications
Licensed spectrum (above 2Ghz)
Same concerns as above
Complex multiple radio system
Cost and availability
Infrastructure intensive
Deployment cost and complexity
Lack of deployed base/inertia
High risk
Unclear risk/reward
Rolfe/Flammer/Ramasastry
<author>, <company>

14. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
802.22
Applicability unclear
Infrastructure based architecture
Point-to-point and point-to-multipoint
Lack of deployed base/inertia
Cost and availability uncertainty
Something to watch
Sub GHz, unlicensed ban
The cool thing about is the availability of unlicensed spectrum below 1GHz with relatively high power (for license exempt) of 4W. Good propagation + power = range.
Unclear
Rolfe/Flammer/Ramasastry
<author>, <company>

15. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
802.15
15.1
Simple and Cheap, but…
Short range, low rate
optimized for low power
not ideally “meshable”
15.3c
Way more speed than needed
Very short range (60GHz)
Optimized for totally different application needs
The cool thing about is the availability of unlicensed spectrum below 1GHz with relatively high power (for license exempt) of 4W. Good propagation + power = range.
Rolfe/Flammer/Ramasastry
<author>, <company>

16. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
802.15
15.4
Unlicensed spectrum (incl. 900 MHz)
Low complexity
Suitable for Mesh (but can be made better)
Compatible data rates
Best fit of 802 standards
…need appropriate enhancements
Application Symbionics
Synergy with existing applications
Same users implementing in both application spaces
The cool thing about is the availability of unlicensed spectrum below 1GHz with relatively high power (for license exempt) of 4W. Good propagation + power = range.
Rolfe/Flammer/Ramasastry
<author>, <company>

17. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
802.15
15.1 is too slow…
15.3 is too fast…
15.4 is just right!
The cool thing about is the availability of unlicensed spectrum below 1GHz with relatively high power (for license exempt) of 4W. Good propagation + power = range.
Rolfe/Flammer/Ramasastry
<author>, <company>

18. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
802.15
15.1 is too slow…
15.3 is too fast…
15.4 is just right!
(well, closer…)
The cool thing about is the availability of unlicensed spectrum below 1GHz with relatively high power (for license exempt) of 4W. Good propagation + power = range.
Rolfe/Flammer/Ramasastry
<author>, <company>

19. Take Aways 15.4 closest to “home” MAC may be closer than PHY ??
(work on this)
Rolfe/Flammer/Ramasastry