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Smart Grid Requirements for IEEE 802.16 M2M NetworkIEEE 802.16 Presentation Submission Template (Rev. 9) Document Number:

IEEE C802.16ppc-10/0042Date Submitted:

2010-07-12Source:

Nageen Himayat, Shilpa Talwar, Kerstin Johnsson E-mail: nageen.himayat@intel.com Intel Corporation

Venue:San Diego, CA, USA

Base Contribution:None

Purpose:To serve as input for IEEE 802.16p system requirements document.

Notice:This document does not represent the agreed views of the IEEE 802.16 Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein.

Release:The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.16.

Patent Policy:The contributor is familiar with the IEEE-SA Patent Policy and Procedures:

<http://standards.ieee.org/guides/bylaws/sect6-7.html#6> and <http://standards.ieee.org/guides/opman/sect6.html#6.3>.Further information is located at <http://standards.ieee.org/board/pat/pat-material.html> and <http://standards.ieee.org/board/pat >.

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Smart Grid Requirements for IEEE 802.16 M2M Network

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Agenda

• Relevant Smart Grid Interfaces for IEEE 802.16 • Smart Grid Requirements (NIST/Open-SG) • Relevant Requirements for the IEEE 802.16p PAR • Summary & Recommendations

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Smart Grid Reference Model

(From SG-NET-diagram) Wide Area Network (Private/Public, Wired, Wireless)

Internet/ExtranetAMI Network

Market ServicesInterface

Generation

Bulk Generation

DistributionTransmission Customer

Internet/Extranets

DAP (jm)

Meter (jn)2way

ESIIn meter

HAN

Energy Services

Interface (ESI)

Smart Appliances PHEV

Sub-meter

Fiel

d A

rea

Net

wor

k Regulaors

FieldSensor

Cap-BanK

Sub StationNetwork

FANGW

RTU

Regional Distr.

SCADA

CircuitBreak.

Markets

Operations

Transmission Ops

Distribution Ops

Service Providers

AMI Headend

CIS/Billing CIS/Billing

MDMS

Distr.SCADA

FEP

Event/OMS

Utility 3rd Party

Possible Flow for 802.16

Other Ops.

Mgmt.

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Smart Grid Requirements Drafted by Open SG• UCA International User group: Open SG Communications WG

– Drafting detailed flow of control and data information across all SG interfaces– Characterizing communication requirements – Input into NIST Priority Action Plan (PAP) 2 on “Wireless communications

Smart Grid”– SG Network requirements specification v4.0 [1].

• Several use cases considered – Residential & Commercial – Customer, Distribution, Transmission – Electrical, Gas etc.

• For IEEE 802.16p focus on – Smart Metering – Distribution Automation

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Smart Grid Interfaces Applicable for 802.16p

• Smart Metering (Commercial and Residential)– Home Area Network

– Field Area Network • Smart Meter to Data Aggregation Point (DAP)

– Wide Area Network • Smart Meter to AMI Head-end

• DAP to AMI Head-end

• Distribution Automation– Wide Area Network

• Monitor and control of distribution equipment

– Field Area Network• Monitor and control of distribution equipment through an aggregation point

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Traffic Characteristics of Smart Grid Applications• Large number of connected devices (e.g. 1K-15 K smart meters/sector )

• No mobility

• Devices typically remain attached to the network for monitoring and control

• Small burst transmission – Interval (periodic) meter readings: Multi-interval reporting, meter reading requests, error

reporting

– On-demand meter readings: requests, responses, error reporting

– Parameter, service updates and commands, acknowledgements, errors

– Event and alarm reporting

– Pricing, payments, power charging rate (PHEV) information

• Higher reliability for Distribution Automation, alarms and event reporting

• Possible group transmission, for group-wide update of system parameters etc.

• Periodic software upgrades

• Low power is desirable to maintain continued operation during power outage

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Example Smart Metering Transmission RequirementsCategory Description Frequency Data

Size (bytes)

Latency Reliability Comments

Periodic Communication (Uplink)

Multi-interval meter read

Considered ResidentialElectric

Smart Meter to DAP

12-24 transactions/day, readings at15min-1 hour

200-1600

< 3 hours > 98% /3 hours

DAP to Head-end 4-6 transactions/DAP/C-I meter/day

200-1600

< 10s 99% Aggregate statistics must be calculated

Periodic Communication (Downlink)

Metering Interval setup,

Considered residential, electric

DAP to Smart Meter

25 transactions/ 1K meters/day

25 5s 98%

Head-end to DAP 25 transactions/ 1K meters/day

25 5s 99%

*source : Open SG requirements [1]

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Example Smart Metering Transmission Requirements Category Description Frequency Data Size

(bytes)Latency Reliability Comments

On-Demand Communication (Uplink)

On-demand meter reads, Payments config.

Aggregate transactions must be modeled by a suitable arrival process

Smart Meters to DAP

Several transactions

100 5s > 98%

DAP to Head-end Several transactions

50-100 5s > 99%

On-Demand Communication (Downlink)

On demand meter requests, Pricing, configuration

Aggregate transactions must be modeled by a suitable arrival process

DAP to Smart Meters

Several 25-50 5s >98%

Head-end to DAP Several 50-150 5s > 99%

Errors/Alarms

Software Upgrades Few/year 400-2000K 5 minutes ~99% Different for meters/DAP

*source : Open SG requirements [1]

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Recommended Requirements for 802.16p

• Ensure network scalability for large number of devices and transactions

• Exploit intermittent, infrequent traffic and minimize operation in connected state

• Improve random access and polling/paging mechanisms

• Exploit low-mobility to reduce signaling in the network

• Exploit group addressing and control

• May need to support new device monitoring and alarm functions

• Support power efficient operation

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Summary & Recommendations

• Smart Grid is an important use case for M2M communications

• Smart grid requirements apply to targeted enhancements in the IEEE

802.16p PAR: a) extremely large number of devices b) small burst traffic

c) low power transmissions.

• Address Smart Grid requirements as part of IEEE 802.16p system

requirements document (SRD)

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Backup

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References 1. Open SG, SG Network Systems Requirements Specification v4.0.2. Open SG, SG Network Systems Requirements Specification Interim

Release 2.0.3. Open SG, SG Functional Requirements ,specification, v1.0 draft.4. Open SG, SG NET diagram5. NIST framework and roadmap for Smart Grid interoperability standards,

v1.0.

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Smart Grid Reference Model (Open SG)