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Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
Iccbn Presentation - optical
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Iccbn Presentation - optical

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Optical Research - Presentation at ICCBN

Optical Research - Presentation at ICCBN

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  • Digital Optical Network Equipment vendor
  • Transcript

    • 1. Recent Growth in Broadband Demand and Advances in Optical Network Technologies (Invited Paper) Dr. Soumya Roy Infinera [email_address]
    • 2. Outline
      • Growth in Broadband Demand
        • Impact on Network Capacity
      • Optical Access Network
        • Industry Trends
      • Optical Core Transport
        • Industry Trends
        • Research Directions
      • Conclusion
    • 3.
      • 70% growth in traffic in recent years
        • Online file sharing (Bit Torrent)
        • Video hosting (Youtube)
        • Social Networking (Orkut, Facebook, MySpace)
        • Online gaming
      • Projected 45% CAGR till 2012 *
        • Commercial IPTV
        • Internet TV
        • P2P TV
        • Mobile broadband
        • Business data
        • Grid Computing
      Growth in Broadband Demand * “Visual Networking Index : Approaching the Zettabyte Era”, Cisco White Paper , June, 2008 90% traffic based on video
    • 4. Video Broadband Requirements
      • HDTV with current MPEG2 standards: ~15Mbps
        • With MPEG4: 5Mbps
      • SDTV with MPEG4 standards: ~2Mbps
      • IPTV requirements with current standards: ~30Mbps
      • Access Speed should increase significantly
      • Requirement of Exponential growth in core capacity
      • Significant network upgrades with innovation
      Higher Bandwidth Demand Higher Capacity Supply
    • 5. Current Converged IP Network Architecture
      • Converged IP backbone will carry all traffic
        • Cable Video
        • Enterprise
        • Mobile (3G, 4G, WiMAX)
      • Increase in access speed should come with increase in backbone capacity
    • 6. Optical Access Deployment Strategies
      • Fiber to the home (FTTH)
      • Fiber to the curb (FTTC)
        • VDSL/ADSL2+ is final access
    • 7. Enablers
      • GPON (Gigabit capable Passive Optical Network)
        • Significant Industry Attraction
        • ITU-T G.984 standard (TDM based)
        • 2.488 Gb/s of downstream bandwidth, and 1.244 Gb/s of upstream bandwidth
        • XG-PON
      • EPON
        • Popular in Asia: can leverage majority IP/Ethernet variable sized packets
        • IEEE 802.3ah – Ethernet in the first mile
        • 1 Gb/s downstream/upstream
        • 10GEPON (evolving IEEE 802.3av)
    • 8. Future
      • DWDM PON
        • Switch from TDM/ATM technology to support DWDM at access
        • Virtual Point-to-point link
      • Point to Point Fiber
        • Physical point-to-point fiber link
      • Research Problem
        • Simulation and Modeling of Access Traffic
          • Video
          • Usage Characteristics
        • Differentiated QoS based on SLAs
        • Dynamic Bandwidth Allocation
    • 9. Network Capacity Growth 10 Gb/s link 40 Gb/s link 100 Gb/s link
      • Key Drivers:
      • No exponential growth in pricing, networking components, space, power and support staff
      • Easy deployment of new services
      Source: Next-Generation Higher Speed Ethernet: 100Gb/s Ethernet and Beyond: Infinera White Paper
    • 10. Enablers
      • IEEE Higher Speed Study Group (HSSG)
        • PHY and MAC layer modifications
        • Support 100Gbps and 40Gbps links for distances up to 40km (single-mode fiber) and 100m (multi-mode fiber)
      • ROADM
        • Reconfigurable Optical Add/Drop Multiplexers
        • Flexible delivery of any service/wavelength to any node
        • End-end wavelength networking and management using the control plane of GMPLS
        • Precludes the need for pre-deployment planning of bandwidth assignment
    • 11.
      • PIC
        • Photonic Integrated Circuits
        • Sub-wavelength add/drop
        • Reduce size, power, cost and improve reliability
        • Removes blocking of all-optical ROADMs
      • Ethernet over WDM
        • Flexibility and cost-effectiveness of Layer 2 Ethernet switching with the enormous bandwidth of WDM
        • Eliminates intermediate layers (SONET/SDH) for transport
        • Evolving Standard: PBB-TE (Provider Backbone Bridge-Traffic Engineering) to use Ethernet for long-haul carrier transport
      Enablers (contd…) 5mm 100 Gb/s Transmit
    • 12. Research problems
      • Cross-layer optimizations
        • Knowledge of IP and DWDM layers to reduce usage of expensive router-router ports
        • Protection through integration of network and physical layers
    • 13. Research Problems
      • Grid Computing
        • Use geographically disperse resources to complete a job
        • Use of Optical Burst Switching techniques for scientific grid computing applications
        • Scheduling problem for latency sensitive jobs
      • Network Planning
        • Hard problems for optimization of bandwidth and network resources
          • Maximize operator’s revenue
    • 14. Conclusion
      • Renewed Interest in Optical networks
        • Growth in Web traffic
      • Key requirements
        • More capacity
        • Cost-effective way of network upgrades
        • Flexible and easy deployment of new services

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