1. DOCSIS Young-Tae Han {han0tae@gmail.com}

2. 배경  HD video service 수요 증가  100+ HD channel  SD video serivcie  위성과의 경쟁  Personalized Video Serivces  Broadcast 로부터 Unicast 서비스로 이동  광대역 인터넷 서비스의 증가  Web2.0, Video streaming, P2PTV 애플리케이션

3. Cable 의 장점  전송 용량  수 Gbps  다양한 콘텐츠  Video/Data/Voices  보안  관리  종단 서비스를 제공 MPEG services IP services

4. DOCSIS  DOCSIS  Open standards process in the ITU and SCTE  Based on member requirements  Managed by operators for global use  Multi-supplier support and cost advantages  1000+ vendors have signed the DOCSIS NDA  85+ vendors have received certification or qualification  Low cost, consumer-oriented brand  DOCSIS is fundamental technology  PacketCable  CableHome  Scalable, Manageable, Interoperable  Catalyst for development of new cable services

5. DOCSIS Evolution & Road Map Over 15 million units shipped worldwide DOCSIS 1.0 (High Speed Internet Access)  Modem price has declined from $300 in 1998 to <$30 in 2004  Over 230 CM Certified, 28 CMTS Qualified DOCSIS 1.1 (Voice, Gaming, Streaming)  Interoperable and backwards-compatible with DOCSIS 1.0  “Quality of Service” and dynamic services, a MUST for PacketCable™  Service Security: CM authentication and secure software download  Operations tools for managing bandwidth service tiers  In the field NOW - 109 CM Certified, 34 CMTS Qualified DOCSIS 2.0 (Capacity for Symmetric Services)  Interoperable and backwards compatible with DOCSIS 1.x  More upstream capacity than DOCSIS 1.0 (x6) & DOCSIS 1.1 (x3)  Improved robustness against interference (A-TDMA and S-CDMA)  Available NOW - 84 CM Certified, 7 CMTS Qualified

6. DCSIS 3.0 MAC Layer –Downstream Channel Bonding –Upstream Channel Bonding Network Layer –IPv6 support –IP Multicast (IGMPv3/MLDv2, SSM, QoS) Security –Certificate Revocation Management –Runtime SW / Config validation –Enhanced Traffic Encryption (AES) –Certificate Convergence –Early Authentication & Encryption –TFTP Proxy Network Management –Diagnostic Log (Flaplist) –Extension of Internet Protocol Data Records (IPDR) usage –Capacity management –Enhanced signal quality monitoring Physical Layer –Switch-able 5-42 MHz, 5-65 MHz, or 5-85 MHz US band –S-CDMA active code selection with new Logical channel Commercial Services –T1/E1 Circuit Emulation support

7. DOCSIS 3.0  Faster Upstream and downstream  Modular CMTS  Channel bonding  Dynamic frequency assignment  Enhanced security  Lower latency and reduced packet loss  Support for IPv6  Better diagnostics  Support for multicast

8. DOCSIS 비교 VersionDownstreamUpstream 1.X42.88 (38) Mbps10.24 (9) Mbps 2.042.88 (38) Mbps30.72 (27) Mbps 3.0 4 channel171.52 (152) Mbps122.88 (108) Mbps 3.0 8 channel343.04(304) Mbps122.88 (108) Mbps