CONENTS Wireless Service Evolution IMT2000 System1 4 IMT2000

CONENTS • • • Wireless Service Evolution IMT-2000 System(1 -4) IMT-2000 Network Evolution Scenario(1 -2) AAL Type 2 RNC in IMT-2000 AAL Type 2 Structure AAL Type 2 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 Service • Basic Requirement : the extension of today’s mobility services to handle multimedia and broadband services • ISDN Service (Voice, Data, Image, Up to 2 Mbps) • Mobility (Roaming) • Mobility Specific Service

IMT-2000 System(2) Trends

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

IMT-2000 System(4) Standardization

IMT-2000 Network Evolution Scenario(1) 2세대 2. 5세대 IS-95/95 A GSM IS-95 B/C GSM+ 3세대 . . . . cdma 2000 Family A UMTS Family B Long Term IMT-2000 Global Service PDC 2. 5 G 2 G +(64 kbps) GSM / WCDMAOne Additional Time Slot within existing 200 Khz channel Variable rate code within 1. 25 Mhz channel 2 G ++(144/384 kbps) Higher Modulation and additional time slot within 200 Khz channel Variable rate code within 1. 25 Mhz(5 Mhz? ) channel 3 G WCDMA for high rate and GSM for low rate Variable Rate code within 5/20 Mhz channel

IMT-2000 Network Evolution Scenario(2) q 초기 Revolution 개념에서 Evolution 개념으로 전환 q Backward Compatibility 중시 q 2 G에서 3 G로의 migration 을 위한 network 개념 강조 q 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 Type 2 RNC in IMT-2000 Compare AAL 1 vs. AAL 2

AAL Type 2 Structure

AAL Type 2 Multiplexing (example)

RAN Example

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

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

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

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