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Software Defined RadioTechnological Principles and Regulatory Aspects

by Christian Bjerrum-Niese

Motorola A/SFebruary 2009

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Why SDR?

Improved spectrum utilization Spectrum refarming

Digital Dividend ( = TV White Spaces)

Flexible Spectrum Mgmt

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Evolution of SDR in Two-way Radio

C

apability

1990 2000 2010

Techno

logy

FirstSDR(DSP)

RadioQ1

1993

P-25 CAI

1996

P-25 Trunking

1999

7/800MHzDual Band

2002

VHF/7/800MHz2008

100 MHz-1GHz

Analog Trunking

ASTRO 25 Trunking

3600 ASTRO Trunk

ASTRO 25 Conv

Analog Conv

SECURENET

AllinOne

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Regulatory Aspects

The WAPECS*) initiative from EU

Wireless Access Policy for Electronic Communication Services

Report from CEPT SE42 to EU with recommendations on least restrictive regulatory measures to

establish Technology Neutrality

Kicked off in 2005

Effective utilization of the Digital Dividend w/Cognitive Radio

On agenda for WRC 2007, back on at WRC 2011

470862 MHz for Region 1

CEPT ECC TG4 Report C as reference

Similar exercise by FCC in the US: TV White Space

TVWS rules announced November 08

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Digital Dividend

Between now and 2012, analog TV transmitters will be switched off

Moving to digital TV transmitters on fewer frequencies the so-called Digital Dividend

All transmitters switched over by end 2012

Switch-off and future plans regulated by each country within EU

How shall vacated spectrum be used? Potential allocation for mobile use Channels 61-69 (790-862MHz)

Any allocation reserved for national security or public safety use?

Digital TV

21 30

Cleared

31 40

Digital TV

41 60

Cleared

61 69

470 550 630 790 862Frequency

(MHz)

Channel

UK Digital Dividend Plan

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E2R: End-to-End Reconfigurability project

The E2R II IST Programme under EU FP6

End-to-End Reconfigurability

Studying the Cognitive Pilot Channel (CPC)

CPC concept included as discussion item for WRC11

Program completed 2008

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The Communication Cube - Basic Idea

The Cognitive Radio Terminal can move freely in space and inside the Communication HyperCube

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The Cognitive Pilot Channel (CPC)

Terminals utilize operational parameters pertinent to geographic location

Terminals map own location data with operational data transmitted by the CPC

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The Cognitive Pilot Channel (CPC)

CPC information advertised to all CR Terminals in the red mesh

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Some Key Activities (1)

ETSI TC Reconfigurable Radio Systems

Standardization of key elements of Cognitive Radio

Opportunity to facilitate industry adoption of SDR/CR Equipmentin Europe and Worldwide

Established in 2008

IEEE P1900.4

Dynamic Spectrum Assignment and Access

Distributed Radio resource usage optimization

Architecture and protocols enabling infrastructure-terminal

decision-making

Established in 2007

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Some Key Activities (2)

SDR Forum

Active Members mainly from Military Background

Delivers Specifications, Reports and Recommendations

Running since 1996

IEEE 802.22

Definition of cognitive radio-based PHY/MAC/air-interface for use by license-exempt devices on a non-interfering basis in spectrum that is allocated to the

TV Broadcast Service

Started 2004

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SDR on the WRC-11 agenda

Article 1.19:

to consider regulatory measures and their relevance, in order to

enable the introduction of software-defined radio and cognitive radio

systems, based on the results of ITU-R studies, in accordance with

Resolution 956 [COM6/18] (WRC-07)

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The path to regulative adoption of SDR/CPC

ETSI RRS

SDR Forum

IEEE 802.22

IEEE P1900.4

E2R IST

CPC accepted,extended studies reqd

WRC07 WRC11 WRC15CPC on agenda

ITU-R WP8A Prepare actions for WRC11

Feasiblity studies on

standardization,

Architecture and

protocols

Public/private/hybrid CPC

Engage multiple

standardization bodies

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Useful References

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Useful References

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Useful References

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Useful References