IEEE 1588 Timing for Mobile Backhaul_Webinar

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IEEE 1588 Timing for Mobile Backhaul_Webinar

  1. 1. IEEE 1588 Timing for Mobile Backhaul A Light Reading Webinar Sponsored by R
  2. 2. Robert Synnestvedt, Cisco
  3. 3. The World is on the M.O.VE.By 2015… There will be 5B mobile Global mobile traffic will devices and grow 26X to 6.3 EB/mo 1.5B M2M nodes www.cisco.com/go/vni Video will be 66% of all mobile traffic Source: Cisco Visual Networking Index (VNI) Global Mobile Data Forecast, 2010–2015
  4. 4. Cost & Capacity Advantage of Ethernet Stay on $37,044 TDM TDM Costs $40,000 Escalate Directly 22 Mbps 23 Mbps with Bandwidth $30,000 19 Mbps 17 Mbps 14 Mbps $20,000 Move to IP/ Ethernet $10,000 $6,887 Ethernet Costs Less per Bit, 24 Mbps 35 Mbps 42 Mbps 49 Mbps Flat Cost Structure 28 Mbps $0 CY09 CY10 CY11 CY12 CY13 Backhaul Charges per Connection TDM IP/Ethernet
  5. 5. Internet Capacity Transformation 4G=IP Web2.0 ’04 W3C ‘94 CSCO ‘84 IP NGN 4G=IP
  6. 6. Regional Demand by Volume & Technology Unified Insight • Backhaul networks must make rapid evolution to Ethernet/IP in order handle traffic loads, and cut operational costs 5
  7. 7. Traditional Mobile ArchitectureLinear transport for linear Subscriber Growth SP Basic WAP Content Content Core RAN
  8. 8. Mobile Internet ArchitectureDistributed to Scale with non-linear M.O.VE Demands SP Third-Party Content Content Cloud National National IP Core Carrier Grade IPv6 Data Center/ Data Center/ Cloud/VHO Cloud/VHO Network CGv6 Regional Regional Data EPC/Edge Data Center/VSO Center/VSO Client Unified RAN Business
  9. 9. Nir Halachmi, Telco Systems
  10. 10. TDM migration needs• TDM technology imposes heavy OPEX and CAPEX issues on the mobile operators• TDM bandwidth scaling results linear escalated costs• TDM equipment is getting obsolete, as long as the people expertise in the technology
  11. 11. TDM migration path Legacy Network Carrier Ethernet RAN Non- GIWF UNI UNI GIWF Non- RAN BS Ethernet Network Ethernet NC I/F I/F• Move from dual backbone network intoa converged packet based network Carrier Ethernet RAN Non- GIWF UNI Network UNI GIWF Non- RAN BS Ethernet Ethernet NC I/F I/F
  12. 12. Migration challenge – time synchronization • Migrating the backhaul to packet based network while using Circuit Emulation Service (CES) will require clock synchronization on both ends • Multiple clock domains can be supported by use of “differential clock” • CES requires only frequency synchronization, that can be achieved by using ACR, SyncE and 1588v2 technologies
  13. 13. Sample Deployment
  14. 14. 2G / 3G / 4G Cell Site Design• 2G / 3G Cell site• 4G cell site
  15. 15. Why use 1588v2 for the migration• Not a bookended solution• New mechanisms to increase accuracy – 1588v2 Transparent Clock – 1588v2 Boundary Clock• Future proof for 4G support – can support phase synchronization as well
  16. 16. Manish Gupta, Symmetricom
  17. 17. Network Synchronization TDM SSU TDM IEEE 1588 IEEE 1588 SyncE SyncE LTE ClusterGrandmaster IEEE 1588 microwave backhaul Base Station PTP / IEEE 1588 SyncE
  18. 18. Frequency and Time Specifications Application Frequency TimeGSM / UMTS / W-CDMA 50 ppbUMTS/ W-CDMA Femtocells 250 ppb N/AGSM, UMTS, LTE Network Interface 50 ppbCDMA2000 50 ppb +/-3 – 10 µsTD-SCDMA 50 ppb +/- 1.5 µsLTE (FDD) 50 ppb N/ALTE (TDD) 50 ppb +/- 1.5 µs small cell, +/- 5µs large cellLTE MBSFN 50 ppb +/- 1-32 µs, implementation dependentLTE-A CoMP (Network MIMO) 50 ppb +/- 500 ns (0.5 µs), pre-standardWiMAX (TDD) 50 ppb +/-1 - 8 µs, implementation dependent
  19. 19. Synchronization OptionsFrom Frequency to Frequency + Time (Phase) GNSS with PTP (SyncE) Holdover GNSS with Rubidium (SyncE) Holdover PTP with Rubidium (SyncE) Holdover GNSS, PTP, Rubidium - You Need 2 Out of 3
  20. 20. IEEE 1588-2008 (PTP) Defined Protocol Specification ratified by IEEE for providing precise timing and frequency over packet-based networks IEEE 1588 PTP History 1588 PTP 2002 (also called v.1) - approved in 2002 1588 PTP 2008 (also called v.2) - approved in 2008 • Introduction of PTP Profile concept ITU-T Telecom Profile for frequency (G.8265.1) • Approved in 2010 IEEE 1588–2008 is the second version of a mature IEEE standard
  21. 21. IEEE 1588-2008 & InteroperabilityTelecom Profile Objectives• Meet the performance criteria for synchronization of cellular basestations when operating over managed networks• Allow interoperability between PTP Grandmasters and PTP Slave clocks• Allow co-existence with other sync networks (such as SyncE and SDH)• To enable the design of protection schemes compatible with existing sync networks G.8265.1 Telecom Profile defines the key parameters for interoperability among vendors
  22. 22. SyncWorld™ Ecosystem Program Symmetricom® has established the SyncWorld™ Ecosystem Program to enable interoperability and cooperation among the vendors to ensure delivery of precise timing and synchronization services across the network
  23. 23. Symmetricom IEEE 1588 Deployments PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PPT PPT PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP PTP 65 + Live IEEE 1588 Network Deployments
  24. 24. Errol Binda, Aviat
  25. 25. Carrier Ethernet Maturity Alongside1588/1588v2 Heavy Reading • Carrier Ethernet maturity has provided a foundation for available and predictable CE backhaul services in the last few years in parallel with 1588/1588v2 maturity – Standards maturity e.g. MEF – Vendor adoption e.g. networking, testing, management – Interoperability testing e.g. EANTC, ecosystems – Competitive CE services
  26. 26. 1588v2 Adaption to all Forms of BackhaulTransport Heavy Reading Dec. 2010• 1588v2 being supported across all Ethernet transport options• Microwave dominates global mobile backhaul –> migrating to Hybrid & All Ethernet• 1588v2 deployment ease is dependent on a reliable and predictable backhaul network, including microwave
  27. 27. Some Unique Attributes of Microwave Backhaul for Supporting 1588v2 1588v2 1588v2 Slave Grandmaster Clock Clock ~ ~2G/3G/4G ~ 1588v2 over Ethernet Microwave Over Multiple Hops Primary Reference Clock • Microwave ‘last mile’ is typically many miles over multiple hops - > engineer for delay and jitter to support 1588v2 ~ ~ 1588v2 Grandmaster 1588v2 over Ethernet Clock ~ Microwave over Protected ~ Rings ~ Primary 1588v2 Reference Clock Slave ~ ~ Clocks
  28. 28. Some Unique Attributes of MicrowaveBackhaul for Supporting 1588v2 Cont. Microwave Adaptive Coding and Modulation • Microwave transport is designed to accommodate a variable radio path -> ACM prioritization for 1588v2
  29. 29. Some Guidelines to Ease 1588v2 overMicrowave DeploymentProper engineering eases 1588v2 over microwave deployments, for example: - Maintain an end to end link delay between 100-500uS per link - Prioritize 1588v2 over other traffic and ensure consistent traffic management (QoS policy, scheduling, shaping etc.) across the entire radio network - Ensure that Synchronization traffic receives the highest priority in any ACM stateFor more info, see Light Reading’s Mobile Backhaul Synchronization Briefing Center: “Deploying IEEE 1588v2 Synchronization over Packet Microwave Networks” Application Note http://www.lightreading.com/mobile_bh/
  30. 30. Patrick Donegan, Heavy Reading
  31. 31. “On a scale of 1 to 5, where 5 is “highly likely” and 1 is “not likely atall,” please rate the likelihood that your company will adopt thefollowing synchronization solutions as its preferred approaches toprovide synchronization of packet backhaul over the next three years”
  32. 32. Heavy Reading’s BackhaulSynchronization Forecast IEEE 1588 Synchronous Ethernet T1/E1 GPS Other 1,200,000 Global cell sites in live service with Ethernet Backhaul 1,000,000 800,000 600,000 400,000 200,000 0 End 2010 End 2011 End 2012 End 2013 End 2014 End 2015
  33. 33. Q&A Session Please submit your questions!
  34. 34. Back up
  35. 35. Backhaul Network TransformationFrom Single Service TDM Hub and Spoke Access…… to Optimized IP/Ethernet Multi-service Mesh Network
  36. 36. The Global Cell Site Market Unified Insight • Backhaul networks must simultaneously support Any combination of 2G, 3G, 4G cell sites 35Source: Equipment vendors, service providers, press, and Heavy Reading estimates

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