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

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

Wireless Service Evolution Next Generation Wireless Service

IMT-2000 System(1) 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 Basic Service

IMT-2000 System(2) Trends

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

IMT-2000 System(4) Standardization

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

IMT-2000 Network Evolution Scenario(2)  초기 Revolution 개념에서 Evolution 개념으로 전환  Backward Compatibility 중시  2G 에서 3G 로의 migration 을 위한 network 개념 강조  ATM capability 중시

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

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

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

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

AAL Type2 Structure

AAL Type2 Multiplexing (example)

RAN Example

Future Mobile Network Architecture UIM Mobile TE Mobile TE Mobile TE Mobile TE Terminal Equipment DomainAccess Network Domain Core Transport Networks Domain(including intelligence) Application Services 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

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

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

Full ATM Network for IMT-2000(2)

Access Environment for Wireless ATM

무선 및 이동통신 수요의 증가 멀티미디어 응용 서비스 제공을 위한 무선 플 랫폼의 필요 무선 사용자들의 ATM 망에 대한 접속 요구 증 대 Wireless ATM 필요성

 IMT-2000 에서 ATM 적용은 다음과 같다.  First Stage : RAN 에 ATM 기술 적용  Second Stage : CN 에 ATM 기술 적용  Mobility services to handle multimedia and broadband services  increasing the need of wireless access to ATM network  Wireless ATM 은 다양한 형태로 구축 될 것으로 예상되나 아직은 풀어야 할 기술적인 문제가 다음과 같이 있다.  Wireless ATM 의 Radio access Interface technique  Mobility control technique to mobile terminals Conclusions