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Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
Multicast and Scalable Networks
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Multicast and Scalable Networks

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  • 1. Multicast and Scalable Networks - Broadcast & Multicast Cluster 23.sept 2005 Harald Loktu, Telenor R&D
  • 2. OUTLINE 1. Broadband Deployment i Europe 2. Major Trends in Service Evolution 3. Evolution in Video Coding 4. Multicast Applied to IP-TV 5. Scenarios in Service Provisioning 6. Conclusion -2-
  • 3. BB Deployment in Europe Cable modem Greece 0% . Ireland 4% 9% 71 % DSL SOME OBSERVATIONS: 20 % Norw ay 82 % On average 88% may have BB 0% Italy 85 % coverage by DSL Austria 31 % 86 % Spain 42 % Large countries like Germany, 87 % Average 29 % 88 % UK, France are above 90% 10 % Germany 91 % Most countries will expand DSL 26 % France 91 % coverage to min 90-95% Portugal 61 % 92 % Iceland 31 % Generally capacity available will 92 % Finland 32 % 92 % increase not only in UK 50 % 95 % urban/suburban areas 45 % Sw eden 96 % DSL will migrate to ADSL 2+ Netherlands 82 % 34 % 100 % and VDSL 2 technology well Luxembourg 100 % Denmark 60 % beyond 50 % coverage 100 % Belgium 80 % 100 % 0% 20 % 40 % 60 % 80 % 100 % National Coverage Dec 2004: Source IDATE -3-
  • 4. Major Trends in Service Evolution Introduction of 3-play (*) – One of the most important drivers for increased access capacity – IP-TV with Standard Definition TV (576x720i) on MPEG-2 – Will be accelerated by analogue shut-down throughout Europe Introduction of HDTV is gaining momentum – HD-enabled Flat Panel TVs are becoming affordable – Next generation game consoles (ps3 & xbox360) support HD – High Definition DVD will be launched 2006-2007 – Europe will introduce (720x1280p)-format Multiple Screens and number of terminals – More TVs move into peoples homes (bedroom, kitchen etc) – TV-programming is moving to PD, PDA and mobile devices (*): (VoIP, Internett access, IP-TV) -4-
  • 5. Evolution in Video Coding (1) - MPG-2 vs MPG-4 compression MPG-2 HDTV Screen Resolution Optimistic MPG-4 (i) Forecast MPG-4 (ii) MPG-2 SDTV MPG-4 (i) (i): 2005/6 MPG-4 (ii) (ii): 2007-2010 0 5 10 15 20 Required Service Capacity [Mbps] -5-
  • 6. Evolution in Video Coding (2) - Deployment issues Introduction of IP-TV in the European market – 3-5 Mb/s average MPEG-2 rate for SDTV – 50-100 channels with TV programing offered – Full service offering distribution occupy (0.15-0.5) Gbps – Most often single service provider Future issus – Migration to MPEG-4 and HDTV start in the timeframe 2005-2010 – European more often have 2 or more TV sets in the home – Video will be streamed other devices as well, so multi-resolution must be handled – Open service provisioning will be pursued allowing for more than 1 service provider -6-
  • 7. Evolution in Video Coding (3) - Migration from SDTV to HDTV Reduced Total TV channel capacity HDTV service Full HDTV service HDTV MPG-4 SDTV HDTV MPG-4 MPG-4 HDTV SDTV SDTV MPG-4 MPG-2 MPG-2 SDTV MPG-4 MPG2-to-MPG4 Migration Timeline -7-
  • 8. Multicast Applied to IP-TV (2) - Solution 1: Static Multicast TV/ PE iTV server ITV server STB Core.net Brut .Netw xTU-R DSLAM ”ERX” PE ISP/ Internet Internett PC F G PE CA TV HE Content on on B.band -8-
  • 9. Multicast Applied to IP-TV (3) - Solution 2: Dynamic Multicast TV/ PE iTV server ITV server STB Core.net Brut .Netw xTU-R DSLAM ”ERX” PE ISP/ Internet Internett PC F G PE CA TV HE Content on on B.band -9-
  • 10. Multicast Applied to IP-TV(4) - Telenor IP-TV DSL trial short-term stats (*) Aggregate Capacity with MC of TV channels 90 80 70 # active TV channels 60 50 Serie1 App. Constant 40 Semin-linear 30 Transition 20 10 0 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 # active TV sessions (*):Empirical data up to 600 customers -10-
  • 11. Multicast Applied to IP-TV(5) Usage – (40-65) % below 500 active TV-sessions/channels – (65-85)% between 500 and 3000 active TV-sessions/channels Assumptions – Only empirical data up to 600 customers – Average values presented Conclusions – For access points like Radio Base Stations and DSLAMs, aggregating up to 2000-3000 customers, static allocation of multi-cast gives a vaste of capacity -11-
  • 12. Scenario 1: TV over IP – Single SP Content Content Integrator Distributor Canal Customer Digital Content Distribution - to SP Incumbant Head End Characteristics – Content only flows as a single copy through the system – One way of formatting content in terms of compression, security, encapsulation – Customers can only choose one service provider Deployment – This scenario is used by most telcos/incumbents entering the IP-TV market with DSL -12-
  • 13. Scenario 2: IP-TV Multiple SPs Content Content Integrators Canal Distributer Customer Digital Content - Incumbant Distribution Viasat Incumbant Head End Cusomter - xSP1 xSP1 Bredbånds Head End Customer aliansen - xSP2 xSP2 Head End Characteristics – Content only flows as a multiple copies through the system – Several ways of formatting content in terms of compression, security, encapsulation – Customers may choose among several service provider Deployment – This scenario may be used by power utilities for entering the IP-TV market with FFTH -13-
  • 14. Scenario1 + Dynamic Multicast - Based on short-term stats Total TV channel capacity Scenario 2: Multiple SPs HDTV will increase MPG-4 max level SDTV HDTV MPG-4 MPG-4 (0.15-0.5) Gbps HDTV SDTV SDTV MPG-4 MPG-2 MPG-2 SDTV MPG-4 3000 TVs MPG2-to-MPG4 Migration Timeline -14-
  • 15. Conclusions Network Scalability – Dynamic Multicast has to be employed to achieve optimum capacity utilisation – Especially, access aggregation targetting below 2000-3000 customers will highly benefit from dynamic multicast Service Provisioning – Migration to HDTV (and MPEG-4 format) will boost the capacity demand at least in an interim period due to parallell transmission – Open service provision will allow for multiple service provider, which most likely increase the capacity demand further -15-

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