Licensed & Unlicensed

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12 Δεκ 2013 (πριν από 3 χρόνια και 8 μήνες)

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©2011 S&C Electric Company. All Rights Reserved.


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©2011 S&C Electric Company. All Rights Reserved.



Donivon Hettich

Director Applications
Engineering


MSGS

San Diego, CA

June 5, 2012


Understanding Your Options

Licensed & Unlicensed
Spectrum Options

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©2011 S&C Electric Company. All Rights Reserved.


Who is S&C?


Established 1911 in Chicago, IL


2500 employee owners in 5 global facilities


Specialists in power protection & automation


Leading innovator of hardware and technology

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©2011 S&C Electric Company. All Rights Reserved.


S&C’s Communication Systems

Your consultative integrator of
communications solutions specific
to electric utilities.

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©2011 S&C Electric Company. All Rights Reserved.



Localized

fundamental processing


Centralized processing with remote access


Distributed Intelligence articulating with central


Ubiquitous many to many communications

Evolution of Information Processing

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©2011 S&C Electric Company. All Rights Reserved.


Difference of Potential

The story goes like this:

If Alexander Graham Bell were
somehow transported to the 21st
century, he would not begin to
recognize the components of
modern telephony


cell phones,
texting, cell towers, PDAs, etc.


while Thomas Edison, one of the
grid’s key early architects, would
be totally familiar with the grid
.

Alexander Graham Bell

Thomas Edison

Source: US Department of Energy: The Smart Grid: An Introduction

What would
Marconi think?

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Ubiquitous
Connectivity

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Network
of
Networks

Use Cases

NAN

AMI
-
WAN

DA
-
WAN

RTUs

IEDs

Backbone

Field Area

LAN

RTUs

IEDs

Large Substation

NOC

WAN


What spectrum
should be
utilized?



No single
communication
system does it
all



Differing use
cases

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Option: Public Versus Private Networks


UTC response to DOE
request for information


Decision could be a
hybrid


Network of Networks

̶
Public normally licensed

̶
Private licensed or
unlicensed



Control
and Cost

Coverage

Availability

Reliability

Latency

Security

System
Lifecycle

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©2011 S&C Electric Company. All Rights Reserved.


Unlicensed or Licensed?


Unlicensed spectrum:

̶
Ideal for: AMI, AMR, SCADA, Distribution Automation

̶
902
-
928 MHz, 2.4 GHz, 5 GHz

̶
Easily and quickly deployed

̶
Spectrum is free



Licensed spectrum:

̶
Provide extended level of reliability (less interference)

̶
Spectrum ownership cost








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©2011 S&C Electric Company. All Rights Reserved.


Licensed Frequency Trends




Cost of Ownership, Operability

4G
Cellular

3G
Cellular

3.65
and 4.9
GHz

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©2011 S&C Electric Company. All Rights Reserved.


Licensed PSBN: Future Option


700MHz Public Safety Broadband Network (PSBN)

̶
Middle Class Tax Relief and Job Creation Act 2012

̶
Nationwide 4G LTE network that allows Utilities as secondary
users to First Responders



Advantages

Challenges

700

MHz Spectrum Access to

Utilities

Network Sharing with Public Safety
(Prioritization)

Network Operations Cost

Reduced

Network Standards

Timeframe

Potentially Good Backhaul

Concentrator

Network Use Charge to Utilities

Potentially Good for Workforce Mobility

Applications

Build
-
Out Time
-
frame

Coverage Mitigation

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©2011 S&C Electric Company. All Rights Reserved.


Current Option: Licensed Frequency
4.9 GHz


In 2003, the FCC
o
pened 50 MHz of the 4.9 GHz
Public Safety Band to all U.S. state and local
government entities, including
municipal power
companies

̶
Point
-
to
-
multipoint are primary users

(general license)

̶
Permanent point
-
to
-
point are secondary users (separate site
license), which must be used within 18
months of
grant

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©2011 S&C Electric Company. All Rights Reserved.


Current Option: Licensed Frequency
4.9 GHz

Considerations:


Apply at
wireless.fcc.gov/
uls
, no
charge, swift processing


Can’t interfere with radio
astronomy observatories


18 channels ranging from 1
MHz to aggregated 20 MHz

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Unlicensed Frequency Trends




Cost of Ownership, Operability

5
GHz

2.4
GHz

900
MHz

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Frequency Diversity

4.9 GHz

5.4
GHz

5.8
GHz

2.4
GHz

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©2011 S&C Electric Company. All Rights Reserved.


Interference Mitigation

4.9 GHz

5.4
GHz

5.8
GHz

2.4
GHz

5.2 or
5.3
GHz

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Aspects of Key Importance

Flexible frequencies
Post
deployment

Control
and Cost

Coverage

Availability

Reliability

Latency

Security

System
Lifecycle

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©2011 S&C Electric Company. All Rights Reserved.


Getting Started…


Future Needs Assessment


Legacy Networks Assessment


Gap Analysis


Roadmap Planning


Project Implementation


Deploy, support and maintain


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©2011 S&C Electric Company. All Rights Reserved.


www.sandc.com/comms

Donivon Hettich

Director Applications Engineering

S&C
Electric Company

donivon.hettich@sandc.com