Trends and Technology Of Radio Monitoring In Korea - IMC
Trends and Technology Of Radio Monitoring In Korea - IMC
Trends and Technology Of Radio Monitoring In Korea - IMC
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
IT R&D Global Leader<br />
<strong>Trends</strong> <strong>and</strong> <strong>Technology</strong><br />
<strong>Of</strong> <strong>Radio</strong> <strong>Monitoring</strong> <strong>In</strong> <strong>Korea</strong><br />
Sang-Tae Kim, Seong-Yun Lee<br />
<strong>Radio</strong> <strong>Technology</strong> Research Department<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
1
Contents<br />
IT R&D Global Leader<br />
I<br />
<strong>Trends</strong> of <strong>Radio</strong> <strong>Monitoring</strong><br />
II<br />
Design Concepts of <strong>Radio</strong> <strong>Monitoring</strong> System<br />
III<br />
Fixed <strong>Monitoring</strong> System<br />
IV<br />
Mobile <strong>Monitoring</strong> System<br />
V<br />
Conclusions<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
2
IT R&D Global Leader<br />
I. <strong>Trends</strong> of <strong>Radio</strong> <strong>Monitoring</strong><br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
3 3
<strong>Radio</strong> Spectrum Environment<br />
IT R&D Global Leader<br />
Various <strong>Radio</strong> Application<br />
Various <strong>Radio</strong> Application & Generalization<br />
Convergence between mobile <strong>and</strong> broadcasting technology<br />
DMB<br />
Telematics<br />
WIibro<br />
New <strong>Radio</strong><br />
Services<br />
USN<br />
Home Net.<br />
RFID<br />
Complicated <strong>Radio</strong> Environment<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
4
<strong>Radio</strong> Spectrum Environment<br />
IT R&D Global Leader<br />
New <strong>Radio</strong> Technologies<br />
Digital Broadb<strong>and</strong> multimedia & Higher Frequency technology<br />
Low Power density & wideb<strong>and</strong> SDR based technology<br />
AM(9KHz)<br />
VHF-TV<br />
FM(200 KHz)<br />
VHF-TV<br />
100 MHz<br />
FM(200 KHz)<br />
AM(9KHz) VHF-TV<br />
200 MHz 300 MHz<br />
CELLULAR(1.25MHz)<br />
0.25 GHz 0.5 GHz 0.75 GHz<br />
1 GHz<br />
S-DMB(25MHz)<br />
PCS(1.25MHz)<br />
4G(3.4~3.6G) WLAN (20 MHz)<br />
T-DMB(12MHz)<br />
WiBro(9MHz) UWB (3.1G~4.8G)<br />
WCDMA(5MHz)<br />
UWB (7.2G~10.2G)<br />
1 GHz<br />
2 GHz 3 GHz 4 GHz 5 GHz 7.5 GHz<br />
10 GHz<br />
Digital Wideb<strong>and</strong><br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
5
<strong>Radio</strong> Spectrum Environment<br />
IT R&D Global Leader<br />
▣New radio technology: Broadb<strong>and</strong> & Small power<br />
◈ Convergence between mobile <strong>and</strong> broadcasting technology<br />
– Satellite DMB, Terrestrial DMB, DVB-H, MediaFLO<br />
◈ Digital Broadb<strong>and</strong> <strong>Technology</strong><br />
– WiBro(9 MHz), DTV(6 MHz), 3G mobile(5 MHz)<br />
◈ Low power density & wideb<strong>and</strong> <strong>Technology</strong><br />
– UWB(more than 500 MHz)<br />
▣Frequency b<strong>and</strong> of radio equipment<br />
◈ Use higher frequency<br />
◈ Satellite DMB(2.6 GHz), WiBro(2.3 GHz), WLAN(2.4/5 GHz)<br />
▣Mobility<br />
◈ Mobile communication<br />
◈ Telematics Services<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
6
IT R&D Global Leader<br />
Direction of <strong>Radio</strong> <strong>Monitoring</strong><br />
▣ Spectrum measurement of new radio services<br />
◈ Wideb<strong>and</strong> spectrum measurement<br />
◈ Mobile communications & small power<br />
◈ Frequency Coverage<br />
▣ Strategies of Efficient <strong>Monitoring</strong> System<br />
◈ fixed monitoring system : General purpose spectrum measure<br />
◈ mobile monitoring system : Effective for high freq./small power<br />
Spectrum Management<br />
• Analysis of measurement DB<br />
• Usage/License information<br />
Mobile <strong>Monitoring</strong><br />
• mobile proximity measure<br />
• short term/<strong>In</strong>terference dissolve<br />
Efficiency<br />
Fixed <strong>Monitoring</strong><br />
• Superior <strong>Monitoring</strong> Environment<br />
• Targeting for high power signal<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
7
IT R&D Global Leader<br />
II. Design Concepts of<br />
<strong>Radio</strong> <strong>Monitoring</strong><br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
8 8
<strong>Radio</strong> <strong>Monitoring</strong> Operation<br />
IT R&D Global Leader<br />
<strong>Radio</strong> <strong>Monitoring</strong><br />
Illegal<br />
<strong>Radio</strong><br />
Signal<br />
Receiving<br />
Signal<br />
Measurement<br />
Judgments of<br />
regal or illegal<br />
Operation Form<br />
• Fixed <strong>Monitoring</strong> : High Power<br />
• Mobile <strong>Monitoring</strong> : interference free<br />
Operation Contents<br />
• Illegal Signal searching<br />
• Illegal signal positioning/dissolution<br />
• Spectrum environment measure<br />
Fixed<br />
<strong>Monitoring</strong><br />
Mobile<br />
<strong>Monitoring</strong><br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
9
Design Concepts<br />
IT R&D Global Leader<br />
Expansion of measuring <strong>Radio</strong> frequency<br />
Measurement frequency (20MHz ~ 3GHz)<br />
Measurements for <strong>Radio</strong> management<br />
Regional <strong>Radio</strong> spectrum Measurement<br />
Frequency usage measurement<br />
Wideb<strong>and</strong> measurement (IMT-2000, DTV etc.)<br />
Data for frequency assignment <strong>and</strong> withdrawal<br />
<strong>In</strong>telligent <strong>Radio</strong> <strong>Monitoring</strong><br />
Automatic & <strong>In</strong>telligent <strong>Radio</strong> <strong>Monitoring</strong><br />
Visual spectrum monitoring<br />
Expansion of<br />
DF function for fixed & mobile<br />
<strong>In</strong>telligent Measurement Analysis<br />
Application of New IT techniques<br />
Wideb<strong>and</strong> Digital signal Processing (SDR basis)<br />
Wireless data network for mobile monitoring<br />
(measurement control & access to license DB)<br />
Data storage with digital compressed format<br />
(Measured spectrum & Audio)<br />
::: ETRI, The Future Wave ::: 10<br />
<strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
10
System Configuration<br />
IT R&D Global Leader<br />
Mobile monitoring/<br />
spectrum management system<br />
Regional & terminal station<br />
Fixed <strong>Monitoring</strong><br />
system<br />
Measurement<br />
comm<strong>and</strong><br />
measurement<br />
DB<br />
GIS DB<br />
Wireless Network<br />
Measurement result<br />
Measurement<br />
DB<br />
GIS DB<br />
measurement result<br />
IRMS<br />
DF system<br />
License data<br />
Comm<strong>and</strong> & control<br />
Measurement<br />
result<br />
KCC<br />
License station<br />
DB<br />
Illegal station<br />
DB<br />
Measurement<br />
DB<br />
GIS DB<br />
monitoring result<br />
statistical data<br />
Comm<strong>and</strong> <strong>and</strong> control<br />
Central Station &<br />
<strong>In</strong>formation service center<br />
KCC : <strong>Korea</strong> Communications Commission<br />
::: ETRI, The Future Wave ::: 11<br />
<strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
11
Networking of <strong>Monitoring</strong> Systems<br />
IT R&D Global Leader<br />
[Remote station]<br />
[Regional <strong>Of</strong>fice]<br />
Main Server Operating PC<br />
• • •<br />
[Central <strong>Of</strong>fice]<br />
Main Server<br />
Comm<strong>and</strong> & Control<br />
Antenna IRMS<br />
Fi ll<br />
Router<br />
PBX<br />
Firewall<br />
National 초고속 국가망(ATM)<br />
Dedicated Network<br />
[Branch <strong>Of</strong>fice]<br />
[<strong>In</strong>formation Service Center]<br />
PBX<br />
• • •<br />
Operating PC<br />
<strong>Radio</strong><br />
management<br />
server<br />
Propagation <strong>Radio</strong> station<br />
Analysis server server<br />
System is Operated by IP method using National Dedicated Network<br />
::: ETRI, The Future Wave ::: 12<br />
<strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
12
IT R&D Global Leader<br />
III. Fixed <strong>Monitoring</strong> System<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
13 13
IT R&D Global Leader<br />
Key Features of fixed monitoring System<br />
▣ Frequency Range : 20 MHz~3 GHz<br />
▣ Measurable Signal b<strong>and</strong>width : max 10 MHz<br />
◈ Measurement : dBm, dBuV, dBuV/m, uV/m<br />
▣ Diverse antennas: Directional & Omni-directional<br />
▣ Rotator for Directional antenna (1~10 rpm variable)<br />
▣ Analysis of measurement data by statistics ti ti tool <strong>and</strong> graphical<br />
representation of the results<br />
▣ Spectrum Display of unlicensed <strong>and</strong> licensed b<strong>and</strong><br />
▣ Real-time scan for illegal radio station<br />
▣ Measurement of channel / b<strong>and</strong> occupancy <strong>and</strong> spectrum usage<br />
▣ networks: connected via dedicated networks<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
14
Key Features of Fixed DF System<br />
IT R&D Global Leader<br />
▣ Frequency range : 20 MHz~3 GHz<br />
▣ Accuracy of DF: 1~2 deg RMS error in LOS condition<br />
▣ DF Algorithm: MUSIC (Multiple Signal Classification)<br />
▣ Real-time location of illegal radio station<br />
◈ <strong>In</strong> cooperation with Fixed <strong>Monitoring</strong> System<br />
▣ Remote control support<br />
◈ All DF system can be controlled at control & comm<strong>and</strong> center<br />
◈ DF system at neighbor site is operated together to locate radio station<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
15
System Architecture<br />
▣Subsystem<br />
IT R&D Global Leader<br />
◈ antenna, receiver (measuring, monitoring), IF signal processing,<br />
system control<br />
▣SDR oriented design<br />
high b<strong>and</strong><br />
antenna<br />
omni<br />
antenna<br />
low b<strong>and</strong><br />
RF<br />
pre<br />
high b<strong>and</strong><br />
amp<br />
measuring receiver<br />
RF tuner ADC DDC/DSP<br />
측정 수신부<br />
RF tuner ADC DDC/DSP<br />
IF signal<br />
processing<br />
system control<br />
directional<br />
antenna<br />
low b<strong>and</strong><br />
monitoring receiver<br />
monitoring receiver<br />
audio<br />
compression<br />
antenna<br />
rotator<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
16
<strong>Radio</strong> <strong>Monitoring</strong> system at CRMO, Daejeon<br />
IT R&D Global Leader<br />
<strong>Monitoring</strong> Antennas<br />
<strong>Monitoring</strong> system<br />
Directional<br />
Antenna<br />
Directional<br />
Antenna/<br />
Antenna Rotator<br />
RF Front-End<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
17
Fixed DF system at CRMO, Daejeon<br />
IT R&D Global Leader<br />
DF antenna<br />
DF system<br />
DF server<br />
DF client<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
18
H<strong>and</strong>off<br />
IT R&D Global Leader<br />
Illegal radio<br />
Operator computer<br />
Frequency b<strong>and</strong> spectrum display<br />
Search frequency b<strong>and</strong><br />
channel/b<strong>and</strong><br />
occupancy<br />
<strong>In</strong>telligent <strong>Radio</strong><br />
Measurement System<br />
Freq : 20 MHz~3.0 GHz<br />
IF BW : 10 MHz<br />
IF signal processing<br />
System control<br />
Illegal radio<br />
signal h<strong>and</strong>-off<br />
Automatic : threshold level<br />
Manual : user selection<br />
signal parameter<br />
measure,<br />
audio monitoring,<br />
channel spectrum<br />
display<br />
Sweeping for selected channels to measure parameter, display<br />
spectrum, <strong>and</strong> demodulate<br />
Simultaneous radio monitoring of two different freq b<strong>and</strong>s<br />
Simultaneous measurement <strong>and</strong> demodulationd of two different<br />
channels<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
19
Flexible Antenna Selection<br />
IT R&D Global Leader<br />
▣ <strong>In</strong>dependent antenna output<br />
feeding to all receivers<br />
▣ Multiple l mode of RF front-end<br />
◈ low distortion<br />
◈ low noise<br />
◈ high power signal suppression<br />
▣ High speed rotation ti of<br />
directional antenna<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
20
IT R&D Global Leader<br />
<strong>Radio</strong> Signal Measurements<br />
▣ High-speed spectrum<br />
measurement<br />
▣ parameter measurement<br />
◈ carrier frequency offset<br />
◈ FM frequency deviation<br />
◈ occupied b<strong>and</strong>width<br />
◈ signal level<br />
▣ spurious measurement<br />
◈ spectrum mask<br />
◈ channel power<br />
◈ adjacent channel power ratio<br />
▣ h<strong>and</strong>-off for illegal radio<br />
detection<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
21
Unlicensed <strong>Radio</strong> Detection<br />
IT R&D Global Leader<br />
▣ High-speed search <strong>and</strong> h<strong>and</strong>-off<br />
of illegal radio station<br />
◈ channel search<br />
◈ b<strong>and</strong> search<br />
▣ Automatic detection of illegal<br />
radio station by comparison with<br />
assigned frequency<br />
▣ Audio monitoring <strong>and</strong> storage of<br />
illegal radio station<br />
▣ Illegal radio detection, <strong>and</strong><br />
signal h<strong>and</strong>off for location <strong>and</strong><br />
measurement<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
22
Occupancy Measurement of Spectrum<br />
IT R&D Global Leader<br />
▣ occupancy measurements<br />
◈ channel occupancy<br />
◈ b<strong>and</strong> occupancy<br />
◈ multiple threshold level<br />
▣ occupancy database<br />
◈ query by various measurement<br />
condition : time, day, month,<br />
multiple threshold<br />
◈ statistics report <strong>and</strong> spectrum<br />
display<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
23
IT R&D Global Leader<br />
DF Results Display<br />
▣ DF Operating Mode<br />
◈ single channel DF<br />
◈ multiple l channel DF with channel<br />
scan<br />
▣ Map display using GIS with 20<br />
layers<br />
▣ Zoom in <strong>and</strong> out of map display<br />
▣ Storage <strong>and</strong> retrieval of DF<br />
comm<strong>and</strong> <strong>and</strong> results<br />
▣ Statistical processing <strong>and</strong> graphical<br />
plot of DF results<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
24
IT R&D Global Leader<br />
V. Mobile <strong>Monitoring</strong> System<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
25 25
Features of Mobile <strong>Monitoring</strong> System<br />
▣ Multi-functional radio monitoring<br />
Direction finding & signal measurement<br />
Compliant with ITU recommendations<br />
▣ Antenna structure minimizing the radio<br />
interference<br />
Design techniques minimizing i i i mutual coupling<br />
Adoption of adjustable non-metallic antenna<br />
mast<br />
▣ Adoption of high h capacity battery &<br />
Precise position information<br />
Comfortable operating environment without<br />
noises<br />
Adoption of DGPS & GPS Compass<br />
▣ Wireless networked system<br />
Remotely controlled by fixed & mobile stations<br />
Homing operation & geolocation<br />
IT R&D Global Leader<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
26
Configuration of Mobile <strong>Monitoring</strong> System<br />
IT R&D Global Leader<br />
▣Specifications<br />
Frequency range : 20 ~ 3000 MHz<br />
IF b<strong>and</strong>width<br />
:10MHz<br />
DF accuracy : 1.5° rms<br />
Sensitivity : -110 dBm<br />
(@12dB SNR,CW)<br />
Mast height : 5 m<br />
Battery capacity : 8 hr<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
27
Operation of Mobile <strong>Monitoring</strong> System<br />
IT R&D Global Leader<br />
▣Operation mode<br />
<br />
<br />
<br />
Fixed frequency mode<br />
Memory & frequency scan mode<br />
Wideb<strong>and</strong> detection mode<br />
▣DF homing <strong>and</strong> geolocation<br />
<br />
DF polar & geographic map display<br />
▣Signal measurement<br />
<br />
<br />
<br />
<br />
Spectrum measurement<br />
B<strong>and</strong>width measurement<br />
Spectrum occupancy measurement<br />
Illegal frequency detection<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
28
Configuration of Mobile <strong>Monitoring</strong> System<br />
IT R&D Global Leader<br />
Configurations<br />
Low profile DF array antenna<br />
Array front-end unit<br />
Multi-channel RF receiver<br />
Signal processing unit & control unit<br />
DGPS, GPS compass, etc.<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
29
IT R&D Global Leader<br />
VI. Conclusions<br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
30 30
Conclusions<br />
IT R&D Global Leader<br />
▣ Designed various radio system with wideb<strong>and</strong> measurement <strong>and</strong><br />
software functions will be used as an infrastructure of IT <strong>Korea</strong><br />
▣ Keep <strong>Radio</strong> environment as interference-free as possible by<br />
removing illegal l radio stations ti <strong>and</strong> some intentional ti interference<br />
sources<br />
▣ Measure the spectrum use <strong>and</strong> make the spectrum map for efficient<br />
use of spectrum<br />
▣ Store the measurements at common DB to apply the measurement<br />
results to spectrum policy in <strong>Korea</strong><br />
::: ETRI, The Future Wave ::: <strong>Radio</strong> <strong>Technology</strong> Research Department<br />
Proprietary<br />
31
Change language