1 / 26

Converged Media Networks

Converged Media Networks How broadcast quality video and voice/data services can be integrated in a broadcast environment. Convergence?. WHY Convergence? HOW Convergence? WHEN Convergence?. Point-to-point Unidirectional Handles one service. Traditional media network design.

hu-pace
Download Presentation

Converged Media Networks

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. Converged Media Networks How broadcast quality video and voice/data services can be integrated in a broadcast environment

  2. Convergence? • WHY Convergence? • HOW Convergence? • WHEN Convergence?

  3. Point-to-point Unidirectional Handles one service Traditional media network design

  4. Traditional media network design • Complexity grows linearly • Costs grow linearly • Operation costs grow linearly • Long provisioning times • Complex resource management • Inflexible

  5. Traditional media network design • Adding new services further complicates network • Multiple systems to operate, support, educate, have spares etc etc

  6. Converged media network • Topology defines your bandwidth resources • Operator works with service and resource management • Bandwidth can be used for Video/Data/Voice • One network to manage • Service ubiquitous (Ethernet, ASI, SDI, T1….)

  7. Converged media network • Switched network • Fast provisioning (minutes instead of weeks/months) • Flexible • Any to any connectivity • Multicast capability (save on capacity)

  8. Improve existing infrastructure TDM channelization with GMPLS interface - Improved utilization - 100% QoS - Traffic engineering - Multicast

  9. Broadband networking of today Synchronous TDM Packet Switching SDH/SONET ATM Gigabit Ethernet Guaranteed Service High reliability Expensive Flexibility Inexpensive Flexibility Best of both worlds neededGuaranteed QoS Dynamic Provisioning Simple and flexible SLAs Real-time support Traffic Engineering

  10. Utilization degradation in packet-switch networks 1 0,9 0,8 0,7 0,6 Utilization 0,5 0,4 0,3 0,2 0,1 0 1 2 3 4 6 8 10 12 14 16 Hops Sources:Bennett, et al, “Delay Jitter Bounds and Packet Scale Rate Guarantee for Expedited Forwarding”, INFOCOM 2001. Charny and Le Boudec, “Delay Bounds in Network with Aggregate Scheduling”, QoFIS 2000, Berlin, Germany. Willinger, et al, “Self-Similarity Through High-Variability: Statistical Analysis of Ethernet LAN Traffic at Source Level”, IEEE/ACM Transactions on Networking, Vol.. 5, No. 1, 1997 2 ports Infinite number of ports

  11. + Cost efficient production of best effort services Highly flexible Widely supported de-facto standard + Very reliable and robust bulk transport Good timing characteristics - Not very suitable for real time sensitive data (video) 100% QoS does not work when prioritizedtraffic dominates Prioritization requires intensive and costly traffic engineering - Low granularity, unsuitable for most end user needs Often low utilization due to bulky capacity steps Static configurations with low flexibility Enhancing existing infrastructure Current situation - Significant investments in IP and SDH/Sonet platforms IP SDH / SONET

  12. Enhancing existing infrastructure + Cost efficient production of best effort services Highly flexible Widely supported de-facto standard + Very reliable and robust bulk transport Good time characteristics + Fully protected channels are ideal for real time sensitive data (video) 100% QoS is guaranteed even at full network load Prioritization by channelization is easy to set up and manage - Low granularity, unsuitable for most end user needs Often low utilization due to bulky capacity steps Static configurations with low flexibility Adding service-adapted TDM channelization eliminates previous limitations IP TDM based channelization with high granularity and flexibility SDH / SONET

  13. Enhancing existing infrastructure + Cost efficient production of best effort services Highly flexible Widely supported de-facto standard + Very reliable and robust bulk transport Good time characteristics + Fully protected channels are ideal for real time sensitive data (video) 100% QoS is guaranteed even at full network load Prioritization by channelization is easy to set up and manage - Low granularity, unsuitable for most end user needs Often low utilization due to bulky capacity steps Static configurations with low flexibility And these limitations become insignificant IP TDM based channelization with high granularity and flexibility SDH / SONET

  14. Enhancing existing infrastructure + Cost efficient production of best effort services Highly flexible Widely supported de-facto standard + Very reliable and robust bulk transport Good time characteristics Enable new services to existing customers - 100% QoS VPN, bandwidth on demand, streaming video etc + Fully protected channels are ideal for real time sensitive data (video) 100% QoS is guaranteed even at full network load Prioritization by channelization is easy to set up and manage - Low granularity, unsuitable for most end user needs Often low utilization due to bulky capacity steps Static configurations with low flexibility IP TDM based channelization with high granularity and flexibility SDH / SONET

  15. Enhancing existing infrastructure + Cost efficient production of best effort services Highly flexible Widely supported de-facto standard + Very reliable and robust bulk transport Good time characteristics Also enabling new media services - utilize existing media interfaces + Fully protected channels are ideal for real time sensitive data (video) 100% QoS is guaranteed even at full network load Prioritization by channelisation is easy to set up and manage - Low granularity, unsuitable for most end user needs Often low utilization due to bulky capacity steps Static configurations with low flexibility IP SDI / ASI TDM based channelization with high granularity and flexibility SDH / SONET

  16. Channelization of bandwidth 4-6 Mbps MPEG TV distribution(multicast) 4-6 Mbps MPEG 4-6 Mbps MPEG 4-6 Mbps MPEG DTM channel A - ISP 1 Fiber or l Contribution Video IP IP IP IP DTM channel B - ISP 2 (best effort) Data(shared channel) IP IP IP IP IP IP IP IP IP Voice DTM channel C - PTT 1

  17. GMPLS Objectives • MPLS objectives • Traffic engineering • VPN possibilities • GMPLS additions - including TDM, WDM and fiber • On-demand service provisioning • Resource reservation • QoS guarantees • Multicast • Topology independence - Ring & Mesh

  18. Next generation optical networking • IP is already the general purpose service interface • Ethernet is the datacom interface • SDI, ASI and Gigabit Ethernet will be the media interfaces • Sonet/SDH is the legacy transport technology for fiber based networks DWDM transport • GMPLS for signalling interoperability • GMPLS-aware TDM based resource reservation enable 100%QoS, provisioning, multicast and SLA (billing) support for both streaming and datacom services. Applications G M P L S Ethernet / IP PDH SDI / ASI TDM based channelization Sonet / SDH Fiber / DWDM

  19. Optical networking - Next generation optical transport technology - Technology basics

  20. A non-hierarchical structure for sending data 125 s frames Dynamic synchronous Transfer Mode • One-way channels (n*512 kbps “steps” up to link speed) • 64 bits in a slot, approximately 4500 slots/frame • 8000 frames/s • Control channels / Data channels 64 bit time slots STM16/OC48link rate

  21. DTM channels • Unidirectional, from sender to receiver • Multirate, from 512 kbps to link speed • Multicast, from one sender to many receivers • Guaranteed service Control channel 1 Mbps channel 2 Mbps channel 4.5 Mbps channel

  22. Scalability - Topology independent Built-in topology discovery • Topologies • Ring • Dual ring • Point-to-point • Dual bus • any mix X X X

  23. Reliable Services - Restoration X X X Automatic failure discovery Automatic restoration Prioritised channels are set-up first Crank-back function X X X X

  24. Plug and play Automatically builds a minimal spanning tree from active reference clock to all nodes Automatically handles clock, node or link failures Maintain frequency and phase continuity during transient states Scalability - Automatic synchronisation 0 1

  25. Nimbra One – Multiservice platform “[CBC] explored the technology from the point of view of quality of service, whether it could merge all traffic – video, audio, radio and voice and data – into the same pipe. The test was successful” Anthony Caruso, Director of Technology and systems, CBC/Radio-Canada. Network World Canada, August 22, 2003

  26. Contact Erling Hedkvist erling.hedkvist@netinsight.net

More Related