July 2008
Doc 15-08-0454-00-0000
Submission Title: [Wireless Neighborhood Area Networks - WNAN]
Date Submitted: [15 July, 2008]
Source: [Tommy Childress] Company [Cellnet+Hunt]
Address: [30000 Mill Creek Ave, Alpharetta, GA 30022] Voice [678-258-1513]
E-Mail:[tommy.childress@cellnethunt.com]
Re: IEEE 802 Plenary WNAN Tutorial
Abstract: States the needs for Utility Networks as expressed by the Utility view as
high level technical requirements.
Purpose: Contribution to Neighborhood Area Networks Interest Group (IG-NAN)
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.
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July 2008
Today, Energy industry is undergoing significant
transformation
+ Need for transformation driven by:
- Escalating costs of energy generation
against the regulatory pressures on
pricing
- Supply and network constraints requiring
significant investments
- Environmental & political pressure
- Aging workforce
+ Confusion in markets and technology
fields today, with many directions to
choose
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July 2008
Electric Utilities
+ Number of Utilities … 3,411
+ Electric Utilities serve over
140M residential and
commercial customers
+ Electric Utilities spent over
$2.3B in Smart Metering in
2006 (Energy Insights
Estimate)
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July 2008
Deployments
Fixed RF Networks
12 million meters
Direct Sequence
Over 200 Fixed RF Distribution
Automation and SCADA Networks
Mesh Frequency Hopping
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July 2008
Key Requirements
Equal Service Level Across the Network
Scalable Network
Low Capital Expense
20 year life
Low Operational Expenses
Bandwidth …Data Traffic
Robust and Secure
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July 2008
Equal Service Level Across the Network
+Typically fixed installation
- Electricity meter outside or inside the house
- Sensor located throughout utility transmission and distribution
infrastructure
+Density - Downtown, Urban, sub-urban and rural environment
- Density of deployment can range from 4000 devices per square mile to 1
device per 10 square mile
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July 2008
Scalable Network
+Network must be scalable
- Millions of Meters
- Thousands of Distribution Devices
- Millions of Sensors
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July 2008
Low Capital Expense
+Communication devices costs must be in few dollars not
tens of dollars
+Capital expense includes
- Purchase cost of sensor
- Installation costs
+Installations
- Low Cost and Simple
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July 2008
20 year life
+Devices must last for 20 years in harsh outdoor
environment
+Over the Air Firmware Upgrade
+-40 C to 85C
+Surge and other AMI requirements from IEEE and ANSI
apply
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July 2008
Low Operational Expenses
+Any field trip is expensive and can be more than the cost
of the product
+Devices must be highly reliable
- 99.5% of the time no field visits should be required
- Remote programming, configuration, diagnostic
+Plug & Read networks
+Self healing
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July 2008
Bandwidth …Data Traffic
+Few kilobytes of continuous traffic
+Few seconds latency
+Reliable delivery of data – in excess of 99.5%
+Alarms and special events can cause few minutes spikes in
traffic
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July 2008
Data usage in AMI/AMR
+ Meter Data – 57%
+ On-Demand Meter Reads – 2%
Data volume for typical
AMI/AMR applications.
+ Outage/Restoration – 1%
+ Demand Response – 4%
+ System Firmware Upgrade – 10%
+ DA/SCADA – 26%
Demand Response
Meter Data
On-demand meter reads
System wide firmware upgrade
DA/SCADA
Outage/Restoration
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July 2008
AMI/AMR bandwidth usage
+ Meter Data – 9%
Bandwidth requirements
for typical
AMI/AMR applications is
driven by time response.
+ On-Demand Meter Reads – 1%
+ Outage/Restoration – 16%
+ Demand Response – 70%
+ System Firmware Upgrade – 1%
+ DA/SCADA – 3%
Demand Response
Meter Reads
On-Demand Reads
Firmware Upgrade
DA/SCADA
Outage/Restoration
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July 2008
Robust and Secure
+Network Uses
- Revenue Determinants
- Command & Control
- Distribution Automation
- Demand Response
+Security
- Encryption
- Authentication
+Robust
- Direct Sequence (802.15.4) – Very Good
- Frequency Hopping Mesh (802.15.X) – Better!
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July 2008
Thank You!
Equal Service Level Across the Network
Scalable Network
Low Capital Expense
20 year life
Low Operational Expenses
Bandwidth …Data Traffic
Robust and Secure
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