1 / 13

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.

damita
Download Presentation

목 차

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related