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1999. 1.

ATM 기술을 이용한 차세대 이동통신망 구축방안. 1999. 1. 작성자 : 이 헌 , 권수영. 현대전자 정보통신연구소. CONENTS. Wireless Service Evolution IMT-2000 System(1-4) IMT-2000 Network Evolution Scenario(1-2) AAL Type2 RNC in IMT-2000 AAL Type2 Structure AAL Type2 Multiplexing (example) RAN Example

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1999. 1.

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  1. ATM 기술을 이용한 차세대 이동통신망 구축방안 1999. 1. 작성자 : 이 헌, 권수영 현대전자 정보통신연구소

  2. CONENTS • Wireless Service Evolution • IMT-2000 System(1-4) • IMT-2000 Network Evolution Scenario(1-2) • AAL Type2 RNC in IMT-2000 • AAL Type2 Structure • AAL Type2 Multiplexing (example) • RAN Example • Future Mobile Network Architecture • Network Example • Full ATM Network for IMT-2000(1-2) • Access Environment for Wireless ATM • Conclusions

  3. Wireless Service Evolution Next Generation Wireless Service

  4. IMT-2000 System(1) Basic Service • Basic Requirement : the extension of today’s mobility services to handle multimedia and broadband services • ISDN Service (Voice, Data, Image, Up to 2Mbps) • Mobility (Roaming) • Mobility Specific Service

  5. IMT-2000 System(2) Trends

  6. IMT-2000 System(3) Trends CDMA (PCS/Cellular) HighData Rate Variable Data Rate Multi-code CDMA Multi-carrier CDMA Multi-PG CDMA W-CDMA CDMA (IMT-2000)

  7. IMT-2000 System(4) Standardization

  8. 2세대 2.5세대 3세대 ........ Long Term IS-95/95A IS-95B/C cdma2000 Family A IMT-2000 Global Service GSM GSM+ UMTS Family B PDC IMT-2000 Network Evolution Scenario(1) 2.5G 3G 2G +(64kbps) 2G ++(144/384kbps) Higher Modulation and additional time slot within 200Khz channel Additional Time Slot within existing 200Khz channel WCDMA for high rate and GSM for low rate GSM / WCDMA Variable rate code within 1.25Mhz channel Variable rate code within 1.25Mhz(5Mhz?) channel Variable Rate code within 5/20 Mhz channel CDMAOne

  9. IMT-2000 Network Evolution Scenario(2) • 초기 Revolution 개념에서 Evolution 개념으로 전환 • Backward Compatibility 중시 • 2G에서 3G로의 migration 을 위한 network 개념 강조 • ATM capability 중시

  10. IMT-2000 Network Evolution Scenario(3) Evolution step 1

  11. IMT-2000 Network Evolution Scenario(4) Evolution step 2

  12. IMT-2000 Network Evolution Scenario(5) Evolution step 3

  13. AAL Type2 RNC in IMT-2000 Compare AAL1 vs. AAL2

  14. AAL Type2 Structure

  15. AAL Type2 Multiplexing (example)

  16. RAN Example

  17. Future Mobile Network Architecture Core Transport Networks Domain(including intelligence) Terminal Equipment Domain Access Network Domain Access Networks Examples: GSM BSS DECT S-PCN ISDN B-ISDN UMTS LAN WAN CATV MBS Core Transport Networks Examples: GSM NSS++IN ISDN (IN based) B-ISDN (IN based) B-ISDN (TINA based) TCP/IP based Mobile TE Mobile TE UIM Mobile TE Mobile TE UIM Application Services Domain

  18. Network Example CSS : Cell Site Switch IWF : Interworking Function LE : Local Exchange TA : Terminal Adder MSCP : Mobile Service Control Point MSCP LE Generic Interface IWF CSS BS MSC BSC BTS BTS Transceiver Transceiver BTS BTS UNI ATM Terminal TA Terminal Terminal PCS/Cellular (2nd Generation RAS) IMT-2000 (3rd Generation RAS) Wireless ATM (Future RAS)

  19. Full ATM Network for IMT-2000(1) GPRS : General Packet Radio Service UPT : Universal Personal Telecommunication

  20. Full ATM Network for IMT-2000(2)

  21. Access Environment for Wireless ATM

  22. Wireless ATM 필요성 • 무선 및 이동통신 수요의 증가 • 멀티미디어 응용 서비스 제공을 위한 무선 플랫폼의 필요 • 무선 사용자들의 ATM 망에 대한 접속 요구 증대

  23. Conclusions • IMT-2000에서 ATM 적용은 다음과 같다. • First Stage : RAN에 ATM 기술 적용 • Second Stage : CN에 ATM 기술 적용 • Mobility services to handle multimedia and broadband services • increasing the need of wireless access to ATM network • Wireless ATM은 다양한 형태로 구축 될 것으로 예상되나 아직은 풀어야 할 기술적인 문제가 다음과 같이 있다. • Wireless ATM의 Radio access Interface technique • Mobility control technique to mobile terminals

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