1. Platform ENG Team SK Telecom - 1 - Wireless Internet Service Management Solution SK Telecom

2. Platform ENG Team SK Telecom - 2 - 1. SKT NATE Service 2. NATE Structure 3. Network & Server Management Tools 4. WIDAS 5. CQMS 6. Evolution of WIDAS & CQMS

3. Platform ENG Team SK Telecom - 3 - 1. SKT NATE Service NATE Communication Entertainment & Broadcasting Communication & Message Value Added Information Mobile Specific Mobile Commerce Location based Service Message Information Mobile Office Voice Phone SMS Photo Mail UMS Text /Image based Entertainment & Information VoD, MoD, AoD Location Based Information Service Mobile Office Mobile Banking & Trading Mobile Coupon Location Based Traffic Information Navigation NATE is first wireless Internet service in Korea NATE is an integrated solution for both wireless and wired Internet Now, NATE is providing various services including Multimedia and Mobile Commerce

4. Platform ENG Team SK Telecom - 4 - Billing / Statistics / Subscriber Info. Contents ServerPlatformAccess NetworkSubscriber Subscirber Info. (DB) WEB Subscriber online-SMS CDMA2000 1X IS95A/B Mobile Subscriber NIBS (NATE Integrated Billing System) Internet WBS (WEB Billing System) EvDO IMT- 2000 WLAN MOG (Mobile Office Gateway) MOG (Mobile Office Gateway) TIG MMS (Multimedia Messaging Service) MMS (Multimedia Messaging Service) WISS (Highmedia Internet Gateway) WISS (Highmedia Internet Gateway) Multimedia NATE WAP NATE WEB Internal CPs (e-mail, Community, Stock, etc…) External CPs SMS Phone WAP Phone High Media Phone VoD Phone PDA VMT Note -book Terminal Network Platform Content 2. NATE Structure

5. Platform ENG Team SK Telecom - 5 - Network Terminal Network Platform Content Component Management Tool Network Platform SVC User Network Platform Network OpenView,OMC Tivolli, OMC InternalExternal SVC 3. Network & Server Management Tools Platform SVC Networks and Servers are under Surveillance with some tools But they cannot assure the E2E path is OK and the Services are OK

6. Platform ENG Team SK Telecom - 6 - 4. Service management System (WIDAS) BSC We developed a tool that can simulate users input (ex. Request a WAP page) to mobile terminals and make the terminal return the result of the request WIDAS uses exactly the same pathes and modules with common users MSCIWF PDSN G/W & Platform CP WIDAS client Simulates User Input Returns result Request get result Network CP Monitoring Flow Monitoring Factors * WIDAS : Wireless Internet Diagnosis & Analysis System NATE Home Access Time, and Success rate Content Access Time, Delivery time, and Success rate Traffic Assignment Time, PPP nego. Time, DNS Query Time, and Success rate etc. WIDAS client

7. Platform ENG Team SK Telecom - 7 - 4. Service management System (WIDAS) – cont. WIDAS clients get the result and report it to WIDAS server by SMS WIDAS server makes statistics of local networks and CPs WIDAS server provides the Status and Statistics via WEB Server SMS Network WIDAS clients WIDAS Server Internet WIDAS WEB Client

8. Platform ENG Team SK Telecom - 8 - 4. Service management System (WIDAS) – cont. WIDAS Screen Shots at WEB Client - Network Geographical Status Local Status Status level by Color TimeAttempt Traffic Channel(RF) Assignment time PPP nego. time DNS Query time WAP G/W Access time And Success Rate

9. Platform ENG Team SK Telecom - 9 - 4. Service management System (WIDAS) – cont. WIDAS Screen Shots at WEB Client - CP Main Menu Category CP Content Attempt SuccessCurrent Status Browsing PathSuccess rate Delay Status Trend of a Content ContentAdministratorContact 123-4567 abc@def.co.kr Time table Delay Success rate Errors in detail

10. Platform ENG Team SK Telecom - 10 - 4. Service management System (WIDAS) – cont. Trouble CP List Overall error Statistics Error log w/ level, code, duration CPContent Statistics of a CP

11. Platform ENG Team SK Telecom - 11 - 5. Service management System (CQMS) WIDAS has many merits but some defects as Using precious RF resources Taking relatively long time to measure CQMS compensates WIDAS with monitoring at wired network without wasting RF resources reducing measuring time And, provides the Status and Statistics via WEB Server * CQMS : Content Quality Management System G/W & Platform CP Monitoring Flow CQMS Simulates Request of terminal gets result CQMS WEB Client Internet

12. Platform ENG Team SK Telecom - 12 - 6. Evolution of WIDAS & CQMS Monitoring Factors of WIDAS & CQMS now are all about connectivity How long does it take to get information ? How often does it succeed ? As the services increase, More and more factors must be in concern Multimedia : Download time, Quality variation, etc Commerce : Security, High success rate, etc We are now developing additional modules for them WAP (information) WAP (information) GVM, SKVM GVM, SKVM VoD, Wavelet VoD, Wavelet WAP (Finance, Banking) WAP (Finance, Banking) WIDAS for PDA WIDAS for PDA WIDAS for VMT WIDAS for VMT

13. Platform ENG Team SK Telecom - 13 - BTS BSC/MSCPDSN/IWF DNSWAP G/W(or TIG)CPTerminal 1. WIDAS *NATE WAP Module * Diagnosis & Analysis Module ** High media download(SK VM, GVM) Module ** Multimedia Streaming(VOD, Wavelet) Module ** NATE Drive Module NATE PDA Module BTS BSC/MSCPDSN/IWF DNSWAP G/W(or TIG)CPTerminal 2. CQMS *NATE WAP Module NATE PDA Module ** NATE Drive Module 6. Evolution of WIDAS & CQMS – cont. : WAP G/W : TIG * : Under Upgrading ** : New Feature under development

14. Platform ENG Team SK Telecom - 14 - Thank You.