July 11-16, 2004

J.W LimSlide 1

doc.: IEEE 802.11-04-0783-00-0wng

Submission

WirelssLAN Spectrum Issuein Rep. of Korea

Jaewoo LIM1, Jongtaek Oh, Taejin LEE

1Ministry of Information & CommunicationRadio Research Laboratory

July 11-16, 2004

J.W LimSlide 2

doc.: IEEE 802.11-04-0783-00-0wng

Submission

Motivation Global Global Domesti

c

Domestic

WRC-2003 resolveWRC-2003 resolve 5GHz Band for RLAN to Globally Harmonize5GHz 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 provideVarious core network

support Spectrum efficiency upgrade (DFS, TPC)

High efficiency data transmission

Real time service provideVarious core network

support Spectrum efficiency upgrade (DFS, TPC)

Public WLAN Enhance Home Network

Application Cellular InterworkingNumerous application

possible

Public WLAN Enhance Home Network

Application Cellular InterworkingNumerous application

possible

July 11-16, 2004

J.W LimSlide 3

doc.: IEEE 802.11-04-0783-00-0wng

Submission

5GHz WLAN Service Position

1000(Mbps) 1 10 1000.1

Normedic

Vehicle

Standing

5GHz BandWLAN

2.4GHz bandWLAN

EV-DO/WCDMA

2G cellular2.3GHz Band

Wibro

- 802.11a- HyperLAN

802.11b

802.16a BWA

ADSL VDSL FTTH

July 11-16, 2004

J.W LimSlide 4

doc.: IEEE 802.11-04-0783-00-0wng

Submission

Application : Public WLAN Service

Airport

Hotel

Public Area

Office

Home

Sub/Rail StationAnytime

Anywhere

WLAN

July 11-16, 2004

J.W LimSlide 5

doc.: IEEE 802.11-04-0783-00-0wng

Submission

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

July 11-16, 2004

J.W LimSlide 6

doc.: IEEE 802.11-04-0783-00-0wng

Submission

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

July 11-16, 2004

J.W LimSlide 7

doc.: IEEE 802.11-04-0783-00-0wng

Submission

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

Hot spots: 12,000

Revenue: $20M

subscribers: 310,000

20032003 Hot spots: over 20,000

Revenue: $200M

Subscribers: 1,160,000

Hot spots: over 20,000

Revenue: $200M

Subscribers: 1,160,000

20042004

• Public Wireless LAN Service Market just begins to bloom• KT places great stress on NESPOT

July 11-16, 2004

J.W LimSlide 8

doc.: IEEE 802.11-04-0783-00-0wng

Submission

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

July 11-16, 2004

J.W LimSlide 9

doc.: IEEE 802.11-04-0783-00-0wng

Submission

Application : Celluer/WLAN Convergence

WLAN

기지국기지국

PCS/IMT-2000

PSTNInternet

2.3GHz WiBro

High speed/Data

Total/Convergence

Interworking

BTS

Low speed/Data

BTS

Interwork

Office (5GHz)

APAPBTS

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)

July 11-16, 2004

J.W LimSlide 10

doc.: IEEE 802.11-04-0783-00-0wng

Submission

5GHz Spectrum Policy

5100 540053005200 5500 5600 5700 59005800

Europe

US

Japan

Korea

WLAN

U-NII5.725~5.825

Hiperlan5.470~5.725

Hiperlan5.15~5.35

WLAN(outdoor)5.25~5.35

WLAN(outdoor)5.470~5.650

Unlicensed455 MHz

Unlicensed555 MHz

Unlicensed100 MHz

Unlicensed480 MHz

WLAN Outdoor

FWA

ISM

U-NII5.15~5.35

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

July 11-16, 2004

J.W LimSlide 11

doc.: IEEE 802.11-04-0783-00-0wng

Submission

Thank You.