1. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 1 WirelssLAN Spectrum Issue in Rep. of Korea Jaewoo LIM 1, Jongtaek Oh, Taejin LEE 1 Ministry of Information & Communication Radio Research Laboratory

2. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 2 Motivation Global Domestic WRC-2003 resolve 5GHz Band for RLAN to Globally Harmonize  ISM band(2.4 & 5.8GHz) WLAN used  U.S : UNII, Europe : HiperLAN  5GHz band allocation for global usage  Increasing demands for Wireless internet access  For preparing Ubiquitous Network in the future High efficiency data transmission Real time service provide Various core network support Spectrum efficiency upgrade (DFS, TPC) High efficiency data transmission Real time service provide Various core network support Spectrum efficiency upgrade (DFS, TPC) Public WLAN Enhance Home Network Application Cellular Interworking Numerous application possible Public WLAN Enhance Home Network Application Cellular Interworking Numerous application possible

3. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 3 5GHz WLAN Service Position 1000(Mbps) 110 100 0.1 Normedic Vehicle Standing 5GHz Band WLAN 2.4GHz band WLAN EV-DO/ WCDMA 2G cellular 2.3GHz Band Wibro - 802.11a - HyperLAN 802.11b 802.16a BWA ADSLVDSLFTTH

4. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 4 Application : Public WLAN Service Airport Hotel Public Area Office Home Sub/Rail Station Anytime Anywhere WLAN

5. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 5 Public WLAN Service Issue Public Wireless Access Service by Using Wireless LAN –WLAN service provider installs WLAN AP in hot-spots, and provides wireless access service to –Users who have NICs (Network Interface Cards) and wireless terminals (Notebook PC, PDA, etc) –Through subscription, authentication, and charging –Limited Service Coverage of WLAN AP About 100m for Indoor and 300m for Outdoor –Technologies IEEE 802.11b now  IEEE 802.11g+a, IEEE 802.11n in the future Low cost broadband and WLAN productivity High speed data and mobile coverage

6. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 6 Public WLAN Service Issue Regulation Aspect –Commercial service using ISM band Authentication and Privacy –Provide secure wireless communication to users –Enable service providers to exclude illicit users Network Planning for AP Installation –No experience for the massive installation of WLAN APs –Limited channels (three non-overlapped channels) RF Interference Issues –Interference between WLAN and other ISM devices –Interference between WLAN channels

7. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 7 Example : KT Public WLAN Service Hot spots coverage –13,000 sites available now in Korea (~20% world wide) –About 20,000 Hot Spots accessible by the end of 2004  Hot spots: 12,000  Revenue: $20M  subscribers: 310,000 2003  Hot spots: over 20,000  Revenue: $200M  Subscribers: 1,160,000 2004 Public Wireless LAN Service Market just begins to bloom KT places great stress on NESPOT

8. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 8 Application : Home Network In order to transmit HD image data(>20Mbps) IEEE802.11a(5GHz bands) technology is needed For realizing URC(Ubiquitous Robotic Companion) 5GHz bands is more important to deploy IT infrastructure. example : Samsung’s Home gateway

9. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 9 Application : Celluer/WLAN Convergence WLAN PCS/IMT-2000 PSTN Internet 2.3GHz WiBro High speed/Data Total/Convergence Interworking BTS Low speed/Data BTS Interwork Office (5GHz) AP BTS HotSpot (2.4/5GHz) DMB Home (2.4/5GHz) CDMA 1x, EV-DO BTS WLAN Allow access to wireless high-speed Internet and mobile communications with a single terminal The Synergy Effect of Public WLAN and EVDO’s Wide Coverage Broadband, Low Fee (WLAN) & Wide Coverage (CDMA)

10. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 10 5GHz Spectrum Policy 5100 5400 53005200 5500 5600 570059005800 Europe US Japan Korea WLAN U-NII 5.725~5.825 Hiperlan 5.470~5.725 Hiperlan 5.15~5.35 WLAN(outdoor) 5.25~5.35 WLAN(outdoor) 5.470~5.650 Unlicensed 455 MHz Unlicensed 555 MHz Unlicensed 100 MHz Unlicensed 480 MHz WLAN Outdoor FWA ISM U-NII 5.15~5.35 WLAN WLAN(indoor) 5.15~5.25 ISM 5GHz band (380MHz wide) will be considered to WLAN (2004) : On processing Wide bandwidth and high-power transmission in outdoor will expand the coverage and ensure higher transmission quality

11. doc.: IEEE 802.11-04-0783-00-0wng Submission July 11-16, 2004 J.W Lim Slide 11 Thank You.