8ebf0357c59caeaf88bafafc6f231c84.ppt
- Количество слайдов: 16
International Telecommunication Union Full Service Deployment via TV Broadband Networks System Evolution Based on MSO Experiences and Requirements Malcolm Taylor (ECB) Luc Martens (t. Com. Labs) Dirk Jaeger (ECCA) draft version ITU-T Workshop All Star Network Access Geneva, 2 -4 June 2004 Page -
ITU-T Outline o Introduction o Evolution of cable communication systems in European cable networks o Experience with Euro-DOCSIS o MSO requirements for future service provision 03. 06. 2004 2
Introduction ITU-T t. Com. Labs cooperation Certification testing on behalf of Certification Board 03. 06. 2004 Euro. Cable. Labs Migration ECCA Euro-Cable Certification Board Technical Committee European Cable MSOs Certification of cable communication equipment (Euro. DOCSIS, Euro. Packet. Cable, . . . ) Emerging technologies and standardisation 3
ITU-T Euro-DOCSIS & DOCSIS o DOCSIS: Data Over Cable Service Interface Specifications • Standards • DOCSIS 1. 0: Data service over cable • DOCSIS 1. 1: Qo. S for multimedia services • Euro-DOCSIS 1. x: European derivative • Uniform, consistent, open, non-proprietary, multi-vendor interoperable basis o SCTE maintains DOCSIS 1. 0 standard o Access platform for other Cable. Labs standards • Packet. Cable for Multimedia services • Open. Cable for i. DTV services
ITU-T Adapt DOCSIS to Euro. DOCSIS American standard: DOCSIS Data Over Cable Service Interface Specification Adaptation to • Physical properties of European CATV networks • European frequency allocations • Downstream Annex A of ITU-T J 83 European standard: Euro-DOCSIS 03. 06. 2004 5
Euro-DOCSIS Reference Architecture ITU-T Operations Support System Cable Modem OSS Interface Termination System (OSSI) Network Side Interface (CMTS-NSI) Distribution Cable Modem Network Termination System Mod Network Termination Demod Generic Headend Switch or Backbone Transport Adapter WAN 03. 06. 2004 Customer Premises Equipment Coax TX O/E Node RX Cable Modem Fiber Cable Modem RF Interface Cable Modem CMTS CPE Interface RF Interface (CMCI) 6
ITU-T Euro-DOCSIS versions • Euro-DOCSIS 1. 0 • Lightweight standard for best-effort internet • Euro-DOCSIS 1. 1 • Offers Qo. S + enhanced security • Uses SNMPv 3 for management (security + authentication) • Uses PKI (Public Key Infrastructure) for authentication and security • Basis for packet-based services such as Vo. IP over cable • Euro-DOCSIS 2. 0 • Advanced physical layer using Advanced-TDMA and S-CDMA 03. 06. 2004 7
ITU-T Euro-DOCSIS standardisation • Euro-DOCSIS 1. 0, 1. 1, and 2. 0 are official annexes to the Cable. Labs DOCSIS 1. 0, 1. 1, and 2. 0 specifications • (Euro-)DOCSIS specification has been published as ETSI (European Telecommunications Standards Institute) and ITU specifications 03. 06. 2004 8
ITU-T Euro-Packet. Cable o Goals of Euro-Packet. Cable - IPCablecom*: • Provide packet-based voice, video and other high-speed multimedia services over the HFC network. • Build on the Qo. S capabilities of Euro-DOCSIS. • Design architecture that allows multiple vendors to rapidly develop low-cost interoperable solutions to meet time-to-market requirements. • Scalable network for millions of subscribers. • Use approved and widely adopted protocol standards. * ITU name for Packet. Cable and Euro-Packet. Cable. 03. 06. 2004 9
ITU-T Euro-Packet. Cable o Specifications based on Packet. Cable developed by Cable. Labs o Differences for Europe • Handset interfaces • Class features • SS 7 differences • V 5. 2 • Electronic surveillance • Root Certificate Authority 03. 06. 2004 10
Euro-Packet. Cable Reference Architecture: Single Zone ITU-T MTA Cable Modem CMTS HFC access network (DOCSIS) IPAT Cable Modem Embedded MTA OSS Backoffice Standalone MTA Cable Modem 03. 06. 2004 Call Management Server Audio Server Signaling Gateway Media Gateway Controller CMTS PSTN Media Gateway Cable Modem Embedded MTA LDS Managed IP Backbone MTA HFC access network (DOCSIS) PSTN MTA Standalone MTA 11
ITU-T Euro-DOCSIS Large scale deployment o Capacity supported by today’s systems: • 38 Mbps downstream • 10. 2 Mbps (v 1. 1), 40. 9 Mbps (v 2. 0) upstream o Service tiers provided by MSOs • 64 kbps. . . 4 Mbps downstream • typically 128 kbps upstream • volume-based, time-based usage limits o Service take-up in some regions in Europe e. g. Belgium • 30%. . . 40% of households with cable connection 03. 06. 2004 12
ITU-T Euro-Packet. Cable Telephony over cable o First commercial deployments and plans for commercial deployments • Switzerland • Sweden • Belgium • Germany • others o Trials in various European countries 03. 06. 2004 13
ITU-T View into the future o (Euro-)DOCSIS service tiers offered today are not sufficient for midterm service planning o 3 – 5 years requirements for downstream bandwidth per user: 10 Mbps o IP service penetration forecast • 20 – 50 % medium term • almost 100 % long term 03. 06. 2004 14
ITU-T View into the future (cont. ) o TVo. IP for Vo. D and video streaming • will stimulate bandwidths demand • will occupy the major portion of IP bandwidth o Traffic characteristic will change • new statistical traffic models required for maximum channel utilisation 03. 06. 2004 15
ITU-T Summary o Euro-DOCSIS cable communication systems have been evolved to support requirements of European cable MSOs o Robust system with large scale deployments o Higher layer protocols for Vo. IP, etc. due to commercially rolled out on top of Euro-DOCSIS o Further evolution of system required to satisfy MSO demands future service provision 03. 06. 2004 16


