Radio Technology Research Department
ETRI(Korea Electronics and Telecommunications Research Institute)
located in the middle of S. Korea (distance 120 km from Seoul)
about 2,000 peoples work in all IT field(Radio Telecomms, etc)
(for more details http://www.etri.re.kr )
2
I.
Brief History of Spectrum Management in Korea
II.
Introduction of Handheld Radio Monitoring System
III. Introduction of Transportable Radio Monitoring System
I. Brief History of Spectrum
Management in Korea
Sokcho
Seoulbuk
CRMO
Seoul
SRMC
Incheon
Suwon
Dangjin
Kangneung
Wonju
Cheongju
Daejeon
Jeonju
Andong
Daegu
Pusan
Kwangju
Suncheon
Ulsan
Changwon
Jeju
4
History of Spectrum Management in Korea
2013
~
2008
MSIP
(Ministry of Science, ICT and Future Planning )
KCC
(Korea Communications Commission)
~
MIC
1994
(Ministry of Information and Communication)
~
MPT
1948
Ministry of Posts and Telecommunication
5
Organization of MSIP
Vice Minister I
Office of Planning
and Coordination
Office of Future
Leading R&D Policy
Vice Minister II
Office of
Broadcasting and
Communications
Convergence Policy
Deputy Minister for
Science & Technology
Coordination
Telecommunications
Policy Bureau
IT Strategy Bureau
Convergence Policy Bureau
Broadcasting Promotion
Policy Bureau
Science and
Technology Policy
Bureau
Radio Policy Bureau
R&D Coordination
Bureau
Performance
Evaluation Bureau
ICT Industry Bureau
Radio Policy Planning
Division
Affiliated Institutions
CRMO
RRA
Radio and Broadcasting
management Division
Spectrum Policy Division
* MSIP (http://www.msip.go.kr), CRMO (http:// www.crmo.go.kr), RRA (http:// www.rra.go.kr)
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Spectrum Management Service in Korea
WRC
International
Frequency Allocation
RR
National
Frequency Allocation
MSIP
Frequency
Assignment
Frequency Allocation
Usage Approval
(Military)
Usage Licensing
(Commercial)
Station Authorization
SUPPORTING
GROUP
Technical
Support
ETRI
KISDI, KCA,
TTA, RAPA
Type Approval
(CRMO)
(RRL, CRMO)
Station Inspection
(CRMO KCA)
Monitoring/Supervision
/Anti-interference
(CRMO)
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Spectrum Management Service in Korea
CRMO
Radio planning
Radio management
Radio protection
Radio Operation
Support
Division
Division
Division
Division
Division
(Planning & Budget)
(Radio monitoring)
(Survey & Control)
(HF Radio monitoring) (General affairs &
Accounts)
Regional Branches
Satellite
Radio
Monitoring
Centre
Regional Offices (10) : Seoul, Busan, Kwanju,
Kangneung, Daejeon, Jeju, Ulsan,
Daegu, Jeonju, Cheongju
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History of Radio Monitoring in Korea
Phase I
User/
# of
station
Main System
Feature
Problem
Action
9
History of Radio Monitoring in Korea
Phase II
User/
# of station
Main System
Feature
Problem
Action
10
History of Radio Monitoring in Korea
Phase III
User/
# of station
Main System
Feature
Problem
Action
11
II. Introduction of Handheld Radio
Monitoring System
Introduction
Background
Proximity monitoring of signals with a high freq. and a low power
Spectrum sharing in ISM band to maximize spectrum usage
Key role of USN(Ubiquitous Sensor Network) and Digital Home industry
Features
Main Functions : Portable Direction Finding, Emission Parameters Meas. &
Demodulation, Wideband Spectrum Measurement
Connection with Mobile & Fixed Monitoring Systems
Target Frequency : 20MHz ~ 6GHz with IF BW of 10MHz
Power Consume : less than 25W which can operate more than 3 hours
* @Sleep Mode : less than 2W
13
Fixed or
Mobile DF
System
handheld radio
monitoring
station
ANT / e-COMPASS
Block Diagram
Measurement Part
RF receiver part
RF tuner
Digital Processing &
Control
IF conv.
Ref. Signal Generator
LO Gen.
digital
I/Q
Meas./Oper.
/Ctl SW
Power/Battery
Ref. Clock
Operation Part
Wire or
wireless
network
Geolocation
GIS
GUI/Result Display
DB
Handheld radio monitoring system
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Configuration
Antenna
Antenna Part
camera
500~1000MHz
1~6GHz
compass
4.1”LED
LCD Touch
Receiver Part
20~200MHz
200~500MHz
USB2.0
7.0” LED
LCD Touch
fan
Power
button
speaker
GPS/WiFi
antenna
LED
(Flash Memory/WiFi
Access/Battery)
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Specifications
16
Operation
17
Features in detail
18
Features in detail
compass
camera
4.1”LED
LCD Touch
19
III. Introduction of Transportable
Radio Monitoring System
Introduction
Background
Need of proximity monitoring all the time to respond the trends of signals
with a high freq. and a low power
Transportable
Transportable
Fixed
TRANSPORTABLE MONITORING SYSTEM
Features
24/7 monitoring near the target located at the shadow area and dense area
Install at the top of a building and tower with a small scale
Main functions : Emission parameters meas., illegal signal search,
spectrum occupancy, Environmental Noise Measurement
Target Frequency : 20MHz ~ 6GHz with max IF BW of 25
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Configuration
Antenna #1
Radio Measurement #1
RF Receiving
RF Tuner
Digital Processing
IF Conv.
I/Q Acq.
Control/Networking
Reference Signal
LO Gen.
Pre-proc.
Meas.
CTRL.
Ref. CLK.
Comm.
CTRL
Antenna &
Radio Measurement
#2
TCP/IP
Operation
TCP/IP
Comm. CTRL
Meas. Processing
GIS
DB
TCP/IP
Networks
GUI/Result Data
22
Configuration
23
Configuration
Side
20MHz~6GHz
Omni-Directional
Antenna
Part
Front
Bottom
Measurement
System
24
Comparison with Existed System
Items
Frequency
Range
IF BW
Measure
Channel
Specification
Existed Fixed Monitoring System
Transportable Monitoring System
(‘05 ~ )
(‘13~ ]
20 MHz ~ 3 GHz
20 MHz ~ 6 GHz
10 MHz
25 MHz
4 Channels
1 Channel
- Large, High Power Consume
- Small, Light, Low Power Consume
- Fixed Setup on a metal Tower
- Flexible Deploy on the Rooftop etc.
- In-door Installed Receivers
- Out-door Installed Receiver
- Radio Quality, Illegal Radiation
- Increased Receiving sensitivity
- Freq. Occupancy Measure
- Radio Noise Analysis
- Installed with Direction Finder
- GPS Disciplined Frequency Reference
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Specifications
26
Measurement of Radio Noise
1
 (k ) 
Rx( k )
Rx
F
F
 k 2 2
  i 
  pi 11 
 2
i 
 
i 1

Eigen Value Analysis
Capture of Measurement Example
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Conclusions
Importance of Spectrum Monitoring
It is encouraging to use SRD device and develop sharing technology
in order to enhance efficiency in the management of radio resources.
In order to prevent a side effect of deregulation which promotes
frequency utilization, it is important to strengthen monitoring after
licensing.
A radio monitoring allows us to promote and spread the industry
related to radio wave.
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Conclusions
Radio Monitoring in Korea
Korean radio monitoring systems have been deployed
successfully with recent IT technology for the last 7 years.
Now we have a total solution compliant with international
recommendations.
As a result, the number of violation stations and illegal
stations has been decreased since 2005 with a successful
operation of Korean monitoring system.
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Ду́же дя́кую
yschoi@etri.re.kr
stkim@etri.re.kr
jichoi@etri.re.kr
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