TV WHITE SPACE AS PART OF THE

FUTURE SPECTRUM LANDSCAPE

FOR WIRELESS COMMUNICATIONS

Sony Proprietary 12th December, 2012 ETSI Workshop on Reconfigurable Radio Systems 1

ETSI Workshop on Reconfigurable Radio Systems

12 December 2012, Cannes (France)

Naotaka Sato, Sony Corporation

Agenda

• TV White Spaces in EU/US

• Location specific EIRP calculation

• Future works

Summary

Sony Proprietary 12th December, 2012 ETSI Workshop on Reconfigurable Radio Systems 2

• Summary

TV White Spaces in EU/US

Sony Proprietary 12th December, 2012 ETSI Workshop on Reconfigurable Radio Systems 3

TV White Spaces in EU/US

Regulation in TVWS

EIRP of

WSD

Flexible Fixed

Difference between EU and US

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ECC Report 159

Published January 2011

WSD

Protection

of

incumbent

services

Location specific

in-block EIRP

control due to the consideration of

aggregated interference

from co-channel and

adjacent channel use of

multiple WSDs

Outside specific

geographic

exclusion zones

Sensing

only

device

ProhibitedGeo-location DB access due

to master WSD is

mandatory

AllowedFCC certification is

necessary

ECC Report 159: Technical and Operational Requirements for the possible operation of cognitive radio systems in the ‘White Spaces’ of the frequency band 470 – 790 MHz

TVWS operation work flow in US

Regulatory database

Geo-locationdatabase

TV Band Device(TVBD)

Wired Wired/Wireless

Regulation Device vendorsDB provider

Sony Proprietary 12th December, 2012 ETSI Workshop on Reconfigurable Radio Systems 5

Information of incumbent services

Available channel calculation

Start operation

� Calculation results from database provider are

same

� Calculation method and interoperability between

databases are defined by FCC

Register device ID and

location informationAvailable channel

notification

TVWS operation work flow in EU

Regulatory database

Geo-locationdatabase

White Spaces Devices(WSD)

Wired Wired

Regulation Device vendorsDB provider

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Information of incumbent services

Available channel calculation

Start operation

� Calculation results from database provider are

not necessarily identical

� Calculation method and interoperability between

databases are defined by each regulator

-> Need to standardization in ETSI?

Register device ID and

location informationAvailable channel and

EIRP notification

Operating channel(s) and transmitter power notification

Update EIRP

Location specific EIRP calculation

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Location specific EIRP calculation

Maximum permitted WSD (EIRP)

2 2

IB (dBm) (dBm) (dB) (dB) 2 (dB) (dB) (dB)

OOB IB CR

( ) ( ) IM ,

( ) ACLR ( ),

WSD

Z G Z G

WSD WSD

P m m r f q

P f P f

µ σ σ≤ − − ∆ − + +

∆ ≤ − ∆In ECC REPORT159 (Page 136), “The term

is a safety margin which can be judiciously set

by the database to provide an additional

Equation (A.7.2-2) of ECC REPORT159

Sony Proprietary 12th December, 2012 ETSI Workshop on Reconfigurable Radio Systems 8

by the database to provide an additional

margin of protection to DTT services. The

value of this margin might, for example, be

increased in response to a proliferation of

WSDs and an increase in the potential for

aggregate interference to DTT services”.

How can we define How can we define IMIM (multiple interference margin)?(multiple interference margin)?

Calculation methods of IM

• Fixed/Predetermined IM• As pre-determined value, a potential maximum number of interferes in IM

without considering the number of active-WSDs/actual-interferers in each

operational frequency in a given area as IM is adopted

• Flexible IMCalculation engine knows the number of active-WSDs in each operational

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• Calculation engine knows the number of active-WSDs in each operational

frequency in a given area, and flexible margin is selected according to the

condition

• Flexible minimized IM• Calculation engine knows the number of active-WSDs in each operational

frequency in a given area, and a minimized IM according to the

consideration of intrinsic calculation parameters of each WSD, like path

loss and ACLR et. al, is adopted

Draft ECC Report 186: Technical and operational requirements for the operation of white space devices under geo-location approach

Comparison among calculation methods

Approach Method WSD networkcapacity

System overhead

Calculationoverhead

Fixed/Predetermined IM Low Low Low

Flexible IM Moderate High Moderate

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Minimized IM High High High

Future works

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Future works

EC report: COM(2012)478 final

• TITLE “COMMUNICATION FROM THE COMMISSION TO THE EUROPEAN PARLIAMENT, THE COUNCIL, THE EUROPEAN ECONOMIC AND SOCIAL COMMITTEE AND THE COMMITTEE OF THE REGIONS”

Sony Proprietary 12th December, 2012 ETSI Workshop on Reconfigurable Radio Systems 12

REGIONS”• SUBTITLE “Promoting the shared use of radio spectrum resources in

the internal market”

• (Section 6 Next step) … Enabling the development and deployment of White

Space Devices based on harmonised standards for geo-location databases to be

drawn up in response to the forthcoming Commission Mandate. The lower part of

the UHF band (in particular 470-698 MHz) should provide a pioneer sharing

opportunity paving the way for use of this approach in other bands. …

http://ec.europa.eu/information_society/policy/ecomm/radio_spectrum/_document_storage/com/com-ssa.pdf (3rd. September, 2012)

EC mandate (M/512)

• TITLE “STANDARDISATION MANDATE TO CEN, CENELEC AND ETSI FOR RECONFIGURABLE RADIO SYSTEMS”• Section 3. Description of the mandate work (Within Objective A)

• A2) To develop European standards complementing the above harmonised

standards enabling the operation of CRS dependent for their use of radio

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standards enabling the operation of CRS dependent for their use of radio

spectrum on information obtained from GLDBs, and in particular covering:

• The information to be exchanged between different GLDBs;

• The parameters and procedures for such information exchange, including security and reliability aspects.

Interface between GLDBs

GLDB A

Master device

GLDB C

Master device

Harmonised Standard

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GLDB B

Master device

Master device

Master device

Slave device

Slave device

Slave device

GLDB translation process

Broadcasting

GLDB

Information from

WSD

Basic data on

DTT network

Broadcasting constraints

Monte Carlo Method

Analytical Method

(5.2.3, 5.2.4, 5.2.5,

(5.2.3.3, Annexes 3, 11)

(5.2.3.4, Annexes 1, 10, 11)

Sony Proprietary 12th December, 2012 ETSI Workshop on Reconfigurable Radio Systems 15

Aeronautical

Radio Navigation

Services

Radio Astronomy

PMSE

Broadcasting

Mobile services

Constraints

for WSD

operation

Information to

WSD

Broadcasting constraints

PMSE constraints

RAS constraints

ARNS constraints

Mobile services constraints

Draft ECC Report 186

(5.6)

(5.5)

(5.4)

(5.3, Annex 6)

(5.2.3, 5.2.4, 5.2.5,

Annexes 1, 2, 4, 5, 10, 11)

Coexistence management

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Wi-Fi

ETSI TR 102 907 V1.1.1

Wi-Fi

ECMA-392

Wi-Fi

Wi-Fi

LTE

LTE

Wi-Fi

Network deployment scenario

National Regulatory Authority

(NRA)

National Regulatory Authority

(NRA)

Third party

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(A) Advanced geo-location engine is a part of geo-location database controlled by National Regulatory Authority (NRA)

(B) Advanced geo-location engine is separate from geo-location database managed by National Regulatory Authority (NRA)

Advanced geo-location engine: IM calculation engine

Incumbent protection techniques

and implementation• Advanced geo-location engine

• Minimized IM(Interference Margin) value setting based on the intrinsic feature of each active interferer

• Interference monitoring integrated

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• Interference monitoring integrated with advanced geo-location engine• Combine interference measurements around

the incumbent receiver and propagation estimation

• Incumbent protection by Out-of-band emission suppression• Apply linear pre-coding prior to the OFDM

FFT-modulation FFT Cyclic

prefix

Cyclic

prefixFILTERFFT

PRECODER

to power amplifier

data symbols

Incumbent Tx

Geo-locationDatabase

Advanced Geo-location Engine

WSDIncumbent Rx Spectrum

Sensor

MeasurementRequest

Measurement

Report

Allowable Transmit

Power Update

Summary

• Presented TV White Spaces activities• Regulation difference between US and EU

• EIRP calculation in the draft ECC Report 186

• Presented possible future works

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Presented possible future works• Standardisation for GLDB interface

• Standardisation for coexistence of cognitive radio networks

• Requirement for setting up a geo-location database and/or the

management of independent database provider with third parity engine

• Incumbent protection techniques and implementation

Acknowledgment

• Contribution from colleagues (NEC, Huawei, ZTE &

InterDigital) in ETSI TC RRS are acknowledged

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End

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End