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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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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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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DeploymentsFixed RF Networks 12 million metersDirect Sequence

Over 200 Fixed RF Distribution Automation and SCADA Networks

Mesh Frequency Hopping

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Key Requirements

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+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

Equal Service Level Across the Network

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+Network must be scalable

- Millions of Meters

- Thousands of Distribution Devices

- Millions of Sensors

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+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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+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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+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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+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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Data usage in AMI/AMR+ Meter Data – 57%

+ On-Demand Meter Reads – 2%

+ 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

Data volume for typical AMI/AMR applications.

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AMI/AMR bandwidth usage+ Meter Data – 9%

+ 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

Bandwidth requirements for typical AMI/AMR applications is driven by time response.

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+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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Thank You!

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