Jon Baldry - Transmode - Improving Network Synchronisation Performancess d2


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Broadband World Forum 2011 - Jon Baldry - Transmode - Improving Network Synchronisation Performance

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Jon Baldry - Transmode - Improving Network Synchronisation Performancess d2

  1. 1. Improving Network Synchronisation Performancewith Native Packet Optical wireless backhaulJon BaldryTechnical Marketing Manager
  2. 2. Mobile backhaul – some numbers
  3. 3. Mixed-RAN cell sites dominateSource : Infonetics May 2011
  4. 4. Fibre cell sites grow in all regionsSource : Infonetics May 2011
  5. 5. Transport Ethernet – is Ethernet Transport
  6. 6. Native Packet Optical Mobile Backhaul – Key benefits Few and optimized Optimized for Low Cost components & low power consumption Aggregation on packet Optimized for Transport level fills the pipes Optimized for Mobile No jitter, low latency, Backhaul best in class sync
  7. 7. Optimized for low cost Few and optimized components  Exclusive, all hardware design and no network processors; purpose built for Ethernet tasks ensuring low cost Low power consumption due to Low Power Design Low entry cost – pay as you grow  App 35% TCO saving over 3 hub rings. Integrated with transport network  One management system for both optical and Ethernet layer
  8. 8. Optical and Ethernet integrated and managed as onenetwork – saves cost WDM transport:  Separate upgrade of individual nodes  Network resilience  Cost efficient capacity increase  Wavelength flexibility Ethernet Services  Low latency / Jitter  Protection options  Standardized, understood and certified  Aggregation / Overprovisioning ….. Ethernet 1xEMXP … Managed and handled as one Network
  9. 9. Transport Ethernet - Transport Characteristics • Ultra Low latency – 1.9 us one way • All packet sizes, all traffic loads, all rules, all classifiers, all queues, all …. • Very low jitter (<0.05 us). 10G NNI-NNI Latency 25 20 Latency (microsecons) 15 Innocor Bit Forwarding Innocor Store and Forward 10 5 0 68 128 256 512 1024 1280 1518 2400 4800 9596 Frame size (Bytes)  Transmode’s 2.5G and 10G Transponders provide only 4 and 10 nanoseconds (per Transponder pair) latency.
  10. 10. Clock Synchronization Is Critical Synchronization requirements: Multiple techniques available for the distribution and  Generally, 2G/3G networks require acquisition of synchronization. frequency sync, with exception of CDMA which also needs phase sync Approach  Now with LTE, two approaches: GPS  FDD mode – requires frequency only with External some exceptions (e.g., eMBMS) synchronization L2 or L3 PSN  TDD mode – requires both frequency and PRC phase synchronization Line synchronization PDH, SDH, NTR, GPON Implementation solutions:  Multiple proven sync options for different Timing Client environments over packet (ToP) (Adaptive clock L2 or L3 PSN  Migration to packet-based networks and recovery, IEEE 1588v2, NTP) instances where phase synchronization is required are leading to new approaches  Optimal solution depends on mobile Synchronous Synchronous Ethernet technology requirements and the available Ethernet backhaul capabilities
  11. 11. MBH with EMXP – Synchronous Mobile Backhaul “SyncE” Network Limits PRC (owned by the Service Provider) Carrier Ethernet MEF 22.1 G.8261 Network LTE Networks RAN BS UNI UNI RAN NC MEF 22.1 Mobile Backhaul Implementation Agreement Phase 2 EMXP network 200 km TPD10G EMXP80 110 km ~70x better EMXP10 TPD10G EMXP80 RHE wander PoP SAE Measured EMXP performance in real mobile backhaul network EMXP built for the new requirements < 1 ppb - Better than 1 ppb Holdover (15 min) - About 70 times better than MEF 22.1 for LTE networks Real networks requires margins for air interface holdover
  12. 12. Real world example Yellow - The Sync mask. Results must be below this line for all time periods. Red - The performance of the E1 based sync in the existing network Green - The even better performance with SyncE over Transport Ethernet. These measurements were performed over a period of a month in a live network using multiple EMXP-80, EMXP-10/22 and EDU units over a 200+ km live network with running at 100% throughput giving excellent synchronization performance and zero packet loss.
  13. 13. Transmode understands Sync-E transport Layer-2 EDU EMXP/II FE/GbE and 10G Network Synchronization TPQMR 4x Sync-E 4 independent sync domains Layer-1 TPD10G-Lite 2x Sync-10GE 2 independent sync domains MS-MXP/10G MS-MXP 4x Sync-E (independent) 3x Sync-E (independent) 10x Sync-E (independent)
  15. 15. ESB TelecomsThe Customer: The telecoms arm of the power utility in Ireland (Electricity Supply Board) Ireland’s leading independent telecoms infrastructure provider Long term Transmode customer with national backbone networkThe Challenge: Opportunity for mobile backhaul wholesale service to International operator Requires flexible and scalable bandwidth to mobile access aggregation points
  16. 16. Virgin Media Business – about the customerThe Customer: Large European cable operator Addresses residential, business and wholesale marketsThe Challenges were how to provide: Mobile backhaul wholesale service to a large mobile operator – EverythingEverywhere and Three via MBNL A new solution for transport of backhaul traffic from cell sites over fibre Flexible and scalable bandwidth Synchronization of mobile network Gigabit capacity to the cell sites
  17. 17. Virgin Media Business – about the solutionThe Solution: Ethernet Mobile Backhaul solution  EDU – cell site demarcation  EMXP II – 1G to 10G aggregation  EMXP 80 – 10G to 10G aggregation EDU Relies on Native Packet Optical architecture Family of EMXPs In combination with ROADM based agile optical network Flexible OAM capabilities across Service, Connectivity and Link layers Family of ROADMsWhy Transmode? Selected Layer 2 functionality integrated in the optical layer Cost efficient Ethernet aggregation Flexible and scalable bandwidth Outstanding Synchronous Ethernet performance Ultra low latency and no jitter
  18. 18. Summary – Native Packet Optical Mobile Backhaul Optimised for today and the future – 2G/3G and LTE/4G Better economics with higher traffic scalability Better performance – latency, jitter and synchronisation
  19. 19. THANK YOU!