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1. WiBro Experience Overview of WiBro Service and Technology 14. Sept. 2007 Uhm Oui-suk

6. Mobile engineering course Education schedule Week subject 1week (30) orientation(3), reception(3), Korea IT(3), IT paradigm(3), MC(4), KII(2), Korea language(3), IT venture(3), Seoul tour(6) extra 2 Java(8), Daeduk valley tour(6), wireless comm.(3), wireless Internet(6), R&D policy(2) 3 Mobile internet platform(6), mobile terminal(6), Java(3), VC(3), IT policy(2) extra 4 Mobile network(6), mobile internet service(6), VC(8), venture meeting(1) extra 5 security(6), JSP(9), system architecture(6), DB(3) extra 6 HTML(9), DB(12), methodology(3), Danyang tour(3) 7 methodology(15), project management(6), WAP(3), Jonju tour(3) 8 WAP(9), anybilder(15), e-government(6) 9 Mobile App(12), J2ME(9), Korea language(3), SK tour(3) 10 J2ME/MIDP(30) 11 MIDP(6), BREW(12), terminal program(12) 12 Mobile Project(21), presentation(6), graduation ceremoney(3)

8. Mobile engineering course Education results(2004)

12. International cooperation with Thailand Results

14. Advisor of ITTP ICU One Seminar

16. Infrastructure Service Product u-Korea Intelligence-based society: ”Ubiquitous” IT 839 Why WiBro 8 Services WiBro DMB/DTV service u-Home service Telematics/LBS RFID/USN service HSDA/W-CDMA BcN service IT service BcN USN SW infraware 3 Infrastructures Mobile/telematics Broadband/home network DTV/Broadcasting IT SoC/convergence device Next-Gen PC Embedded SW Digital contents and SW solutions RFID/USN Intelligent Robots 9 Growth Engines

18. Why WiBro Mobile phone/internet users High speed internet users Mobile phone users Mobile Internet Unit :Million Users Source : Ministry of Information & Communication (Nov, 2003) Subscribers in Korea

21. Service Positioning Service Positioning Tariff Competitiveness Mobility Portability Data Rate WiBro IMT-2000 Nomadic Cordless Fixed DATA Rate High speed DSL(ADSL,VDSL ..) WLAN 3G ( IMT-2000 ) 2G ( IS-95 , Cellular ) Mobility WiBro High Wired Phone Cordless phone Service beyond the bounds of WLAN, CDMA 1x(EV-DO), IMT2000

22. Service Positioning Service Comparison Item WiBro High Speed DSL WLAN Cellular(2/2.5G) Service Area Outdoor/Indoor Indoor Indoor (Hotspot) Outdoor/Indoor Data Rate High speed Ultra high speed Very high speed Med/Low speed Mobility High No Low Very high Contents Wired/Wireless Contents Wired Contents Wired/Wireless Contents Wireless Contents Tariff Relatively Low Relatively Low Low High Terminal Smart phone, PDA, Notebook etc. Desktop, Notebook PDA, Notebook Cellular phone, PDA

23. Standardization Establishment of PG302 TTA PG302 Standard Major System Parameters Radio Access Requirement TDD Frequency Reuse Factor Duplexing 1 OFDMA Multiple Access 10 [MHz] Channel BW Mobility ≤ 60 [Km/h] Service Coverage ≤ 1 [Km] Spectral Efficiency [bps/Hz/cell(sector)] Max. DL / UL = 6 / 2 Aver. DL / UL = 2 / 1 Handoff ≤ 150 [ms] Throughput (per user) Max. DL / UL = 3 / 1 [Mbps] Min. DL / UL = 512 / 128 [Kbps]

24. Standardization Committee Structure of PG302

25. Standardization International Standard

26. Standardization WiBro and WiMAX

28. WiBro Market Analysis ■ In Korea wireless internet service is mainly used for entertainment (58%), communication (email/caf é 17.6%) and business (9.3%). ■ Cellular service has the demerits such as insufficient data rates, high tariff system and WLAN has several shortcomings such as service coverage and QoS problems in spite of high speed data rate and low tariff system. ■ Customer needs of WiBro service is high speed data rate and low tariff system, which are the accelerating factor for widespread use of wireless internet. 7 Customer Needs Automobile Service SD MMC SD MMC SIM Mobile Game Telephone PC DVD Audio DVC Personal Info Home

29. WiBro Market Analysis Market Outlook

33. Applications Application Services

34. Applications Terminal

35. Applications Terminal

37. WiBro Capacity System Capacity Item Value Note Bandwidth Channel 9MHz Effective BW = 8.75MHz Total 27MHz 3 Channels Peak DL Data Rate 20Mbps Phase 2: 50Mbps Average DL Data Throughput/sector 6Mbps Multi-cell environments without AAS, MIMO Average DL Data Throughput/cell site 54Mbps ( = 6Mbps x 9) Macro cell site: 3FA/3Sector Cell Radius Macro Cell : 1Km Micro Cell : 400m Pico Cell : 100m

38. WiBro Capacity Coverage

39. WiBro Network Network Architecture ACR : Access Control Router RAS : Radio Access Station PSS : Personal Subscriber Station PSS HA RAS PSS ACR AAA Public IP Network ACR PSS Operator’s IP Network PSS RAS RAS RAS … …

40. WiBro Network Network Structure

41. WiBro Network WiBro TestBed

42. WiBro Network WiBro TestBed

43. WiBro Spectrum in Korea Operators are selected at February 2005: KT, SK 2300MHz 2327 2331.5 2358.5 2363 2390 2400MHz Trial Service during 1Q of 2006. Launching Commercial Service by 2Q of 2006 Spectrum allocation and Service Schedule CH1 CH2 CH3 CH1 CH2 CH3 CH1 CH2 CH3 1st Band 2nd Band 3rd Band GB GB GB WLAN 4.5MHz 4.5MHz 10MHz CH1 Frequencies Operators Service Schedule

44. OFDM/OFDMA Single-carrier vs. Multi-carrier

45. OFDM/OFDMA OFDM

46. OFDM/OFDMA OFDMA

47. MIMO MIMO Technique

48. MIMO WiBro MIMO

50. Korea ’ s Status for WiBro Progress Schedule in Korea

51. Korea ’ s Status for WiBro

52. Korea ’ s Status for WiBro

53. Korea ’ s Status for WiBro

54. Korea ’ s Status for WiBro

55. International cooperation through WiBro WiBro Seoul and ChungGyeChon Stream

56. International cooperation through WiBro International cooperation through WiBro

57. International cooperation through WiBro Global Deployment

58. International cooperation through WiBro Contacts

59. Q & A Thank you