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목 차

목 차. BS SYSTEM HW architecture BS SYSTEM SW architecture BS SYSTEM 규격 및 RACK 구조 3 GPP L1 규격 2 G and 3G System 비교 기술관련 Site 및 문서. BS SYSTEM HW Architecture. Cell Bus. RIU. TRXFU. CHS. LVDS. E1/ DS3/ STM1. C H C. C P C. RIC. AAL2/5. APC. MT. UDCU. RNC. IPC.

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목 차

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  1. 목 차 • BS SYSTEM HW architecture • BS SYSTEM SW architecture • BS SYSTEM 규격 및 RACK 구조 • 3GPP L1 규격 • 2G and 3G System 비교 • 기술관련 Site 및 문서 이화여자대학교

  2. BS SYSTEM HW Architecture Cell Bus RIU TRXFU CHS LVDS E1/ DS3/ STM1 C H C C P C RIC AAL2/5 APC MT UDCU RNC IPC BSU BSC System Clock BMU Control Line BRC BMC IPC Ethernet DM • RIC : RNC Interface Card • BRC : BS Routing Card • BSC : BS Synchronization Card • BMC : BS Main Controller • CHS : CHannel card Shelf • CPC : CHS control Processor Card • CHC : CHannel Card • APC : Analog Processing Card 이화여자대학교

  3. 3GPP L1 규격(1) • 3GPP L1 기본 규격 • 2G 대비 다양한 서비스 지원을 위한 복잡한 채널구조 • FDD / TDD • Chip Rate : 3.84 Mcps • Baseband : 5 MHz • 10 ms radio frame period • 15 Time slots per one radio frame(2560 chips per slot) • Convolutional coding (K=9, rate= 1/2 and 1/3) • Turbo coding (rate= 1/3) • Interleaving 이화여자대학교

  4. BS SYSTEM RACK 구조 이화여자대학교

  5. BS SYSTEM SW Architecture NBAP • NBAP • Cell Configuration Management • System Information Management • Resource Event Management 등 • Q.2630.1 • Q.2150.2 • Connection establishment and maintenance • Keep alive 등 • SSCF-UNI • Assured transfer data • Transparency of transferred information • Establishment and release of SAAL connections • SSCOP • Sequence Integrity • Error Correction by selective retransmission • Flow control 등 Q.2630.1 Q.2150.2 SSCF-UNI SSCOP RELAY AAL2 AAL5 W-CDMA ATM PHY Uu Iub 이화여자대학교

  6. 3GPP L1 규격 • General Protocol Architecture relation to other layers 이화여자대학교

  7. 3GPP L1 규격 • UP Link physical channels • Common channels • PRACH (Physical Random Access Channel) • PCPCH (Physical Common Packet Channel) • Dedicated channels • DPCCH (Dedicated Physical Control Channel) • DPDCH (Dedicated Physical Data Channel) 이화여자대학교

  8. 3GPP L1 규격 • DL Physical channels • Common channels • CPICH (Common Pilot Channel) • P-CCPCH (Primary Common Control Physical Channel) • S-CCPCH (Secondary Common Control Physical Channel) • SCH (Synchronization Channel) • PDSCH (Physical Downlink Shared Channel) • AICH (Acquisition Indication Channel) • PICH (Page Indication Channel) • Dedicated channels • DPCCH (Dedicated Physical Control Channel) • DPDCH (Dedicated Physical Data Channel) 이화여자대학교

  9. BS SYSTEM 중요 규격 이화여자대학교

  10. 2G and 3G(DS) System 비교(1) Item 2G 3G Chip Rate • 3.84 Mcps • chip rate의 증가로 인해 Spreading Factor를 증가 시킬 수 있으며 이로 인해 간섭량 감소 및 용량 증가 • 무선 페이딩 채널에서 다중경로 분해 능력 향상으로 다이버시티 효과 증대 1.2288 Mcps UL Spreading Modulation OQPSK • HPSK • Peak to Average Power Ratio가 줄어, Power Amp. 설계 유리 UL Modulation Non-coherent • Coherent demodulation using pilot symbols • coherent 복조로 인한 성능향상으로 역 방향 용량 증대 Not used DL Tx Diversity • TSTD, STTD, FBTD • 기지국에서 두 개의 송신 안테나 사용 Channel Coding Convolution Coding • Convolution, Turbo Coding • 고속 데이타에 Turbo coding을 사용 이득 증대 이화여자대학교

  11. 2G and 3G(DS) System 비교(2) Item 2G 3G Channel Type • UL에 pilot 심볼 형태의 채널 추가 • Quick paging 가능한 형태 • 패킷 데이터 서비스를 위한 패킷채널 추가 Pilot Sync Paging Access Traffic Maximum Data Rate 9.6 Kbps or 14.4 Kbps • 최대 2 Mbps • UL에서는 최대 6개의 Multicode 전송가능 • DL에서는 최대 13개의 Multicode 전송가능 Power Control • UL/DL 1500Hz • Power control rate가 1500Hz로 향상됨 • 고속 이동국의 경우 step size가 1dB 보다 작은 효과를 갖는 전력제어기법 사용 Closed Loop Power Control UL only 800Hz No Inter-frequency Handoff • Inter-frequency Handoff • 다른 주파수를 찾기 위하여 데이터를 압축하여 보내는 Compressed Mode 있음 Handover 이화여자대학교

  12. 기술관련 Site 및 표준화 문서 • 3GPP : www.3gpp.org의 status list 분야 표준화 문서 L1 TS25.201 TS25.211 ~ 214 L2/L3 TS25.301 ~ 304 TS25.321 ~ 324 TS25.331 Iub TS25.430 ~ 435 Iur TS25.420 ~ 427 Iu TS25.410 ~ 415 A interface 3G - IOS 이화여자대학교

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