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Recent growth in timing

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Gil Biran’s keynote speech at WSTS explored answers to urgent synchronization challenges across a range of industries. View the slide deck for more info on achieving 5G and IoT network timing.

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Recent growth in timing

  1. 1. Recent growth in timing WSTS, San Jose, March 2019 Gil Biran
  2. 2. © 2019 ADVA Optical Networking. All rights reserved.22 Distributed compute processes with critical infrastructures and the industrial internet rely on precise time for coordination Precise synchronization has become essential A growing number of applications require increased precision in timing Precise synchronization of radio access networks is fundamental for public and private mobile communication infrastructures Positioning services for defense, aviation, seismology and many other applications need accurate time for precise localization Financial transactions and certain security applications require trustworthy and precise time for auditable transparency
  3. 3. © 2019 ADVA Optical Networking. All rights reserved.33 Lack of customer awareness – there is a high likelihood that sync accuracy is at risk Network synchronization – moderate cost, high impact Sync investment (< 1% of network cost) is not creating direct service revenues, it is an enabler (e.g. 5G) Inaccurate timing impacts service revenues by performance degradations, service outages or even catastrophic failures • No compromises with timing accuracy • Resilience by combining multiple sync technologies and suppliers • Loose integration for agility, speed and vendor-neutralitySync failure  network outage
  4. 4. © 2019 ADVA Optical Networking. All rights reserved.44 Tier 1 markets, applications and industry verticals Radio access networks Highly accurate phase and frequency synchronization for efficient use of spectrum Migration from NTP to PTP-based timing for increased time stamping accuracy Financial trading Digital cable networks Timing distribution to remote-PHY devices in digital infrastructure deployments Higher accuracy and uncompromised reliability for mission critical applications Power utilities Data center infrastructure Common and precise time basis for synchronization of distributed data bases
  5. 5. © 2019 ADVA Optical Networking. All rights reserved.55 © 2019 ADVA Optical Networking. All rights reserved. Confidential.5 Synchronization of radio access networks
  6. 6. © 2019 ADVA Optical Networking. All rights reserved.66 Synchronization of radio access networks Key players Sync and RAN vendors Solution needed Scalable solution, clock accuracy, sync assurance Outlook Market will grow due to 5G, price pressure due to reduce ARPU, compensated by increase in volume Industry vertical Incumbent fixed and mobile network operators Compelling event Introduction of LTE-TDD, migration to LTE-A and 5G Product needed Cesium clock, Core, edge and access grandmasters
  7. 7. © 2019 ADVA Optical Networking. All rights reserved.77 Radio access synchronization requirements 2G/3G – frequency synchronization 3G TDD: 5µs time synchronization (large cells) LTE – multicast: several µs time synchronization LTE Advanced CoMP, TDD: 1.5µs time synchronization 5G – positioning: <100ns time sync (cluster) 5G – CA, IoT: several 100ns time sync (cluster) Fronthaul eCPRI: <100ns time sync
  8. 8. © 2019 ADVA Optical Networking. All rights reserved.88 Assured precision timing – scalable phase and frequency synchronization End-to-end network timing delivery Core network Enhanced primary reference time clock Synchronization network management suite Timing distribution network Distribution networkOn-site Multi-technology edge grandmaster Highly scalable core grandmaster PTP time-as-a- service Macro cell timing In- and outdoor small cell timing
  9. 9. © 2019 ADVA Optical Networking. All rights reserved.99 BBU is further split into DU/CU with very stringent timing requirements From 4G eNB to 5G gNB synchronization evolution 4G: RRH connected over CPRI with in- band synchronization 5G: gNB with Ethernet connectivity and DU/CU using PTP for accurate timing RRU connected over eCPRI with PTP synchronization EPCBBU RRH PTP Profile G.8275.1/.2 DU CU 5G RRU PTP Profile G.8275.1/.2 EPC G.8275.1 T-GM SyncE SyncE T-GM T-TSC SyncE T-TSC T-BC ETH-IPETH/eCPRI
  10. 10. © 2019 ADVA Optical Networking. All rights reserved.1010 Emerging synchronization architecture for most stringent timing requirements 5G synchronization architecture eCPRI fronthaul RRH RRH RRH eCPRI fronthaul network: FOPS G.8275.1 BC and SyncE Cell sites with eRE for fronthaul timing CU and DU with eREC fronthaul timing and GNSS- disciplined GM Core network: full or partial on-path support BC and SyncE Central synchronization delivery with grandmaster and ePRTC +/-100nsec +/-1100nsec Fronthaul Backhaul DU Middlehaul CU
  11. 11. © 2019 ADVA Optical Networking. All rights reserved.1111 © 2019 ADVA Optical Networking. All rights reserved. Confidential.11 Digital cable network synchronization
  12. 12. © 2019 ADVA Optical Networking. All rights reserved.1212 Digital cable network synchronization Key players Sync vendors Solution needed Cable labs interoperability, compact and cost effective Outlook Multi-service operators are forced to move to DOCSIS 3.1 in order to survive by lower cost of business services, mobile backhaul and TaaS to follow Industry vertical MSOs and cable network operators Compelling event DOCSIS 3.1 migration to digital RPD cable access infrastructure Product needed Core and edge grandmasters, access grandmaster for TaaS
  13. 13. © 2019 ADVA Optical Networking. All rights reserved.1313 General synchronization requirements From DTP in legacy DOCSIS to IEEE 1588 PTP in DOCSIS 3.1 User Access network Head-end Precision Time Protocol IEEE 1588 - PTP FiberCoax CMTS Grandmaster (GM) Towards D-CCAP DOCSIS Timing Protocol (DTP)Cable modem (CM) DOCSIS DTP NTP Distri- buted CCAP Connectivity network Connectivity Network GM Fiber node Cable modem (CM) PTP is transported over IP unicast (G.8275.2 PTP profile) RPD
  14. 14. © 2019 ADVA Optical Networking. All rights reserved.1414 Distributed access architecture in cable networks IEEE 1588 PTP for cost-efficient synchronization from central grandmaster User Access network Head-end Precision Time Protocol IEEE 1588 - PTP DOCSIS timing Distri- buted CCAP Cable Modem (CM) RPD Connectivity network 2nd step: If high accuracy is required, (e.g. mobile) scalable grandmasters are pushed closer to the end customer 1st step: PTP is newly introduced in cable access networks in metro network (10G, IPv6) DOCSIS Data over cable service interface specification CCAP Converged cable access platform RPD Remote PHY device 100usec
  15. 15. © 2019 ADVA Optical Networking. All rights reserved.1515 © 2019 ADVA Optical Networking. All rights reserved. Confidential.15 Power utilities synchronization
  16. 16. © 2019 ADVA Optical Networking. All rights reserved.1616 Synchronizing for energy companies Industry vertical Energy utility companies Compelling event Stringent timing requirements at substations due to the shift to power grid networks, shift from SDH to packet over optical in the WAN Product needed Cesium clock, core and edge grandmasters Key players General and power-specific sync vendors Solution needed Power profile, IRIG-B and semi-rigid solutions, GNSS and sync assurance Outlook Although the very slow rate of progress, next generation power grid networks will drive the shift from NTP and IRIG-B to PTP, will take 10+ years
  17. 17. © 2019 ADVA Optical Networking. All rights reserved.1717 Synchronization accuracy requirements Bulk metering Customer premises metering SCADA: supervisory control and data acquisition Frequency measurement Event recorder Fault localization Synchrophasor: voltage/current with accurate phase 1s 1ms 1µs IRIG NTP PTP
  18. 18. © 2019 ADVA Optical Networking. All rights reserved.1919 • IRIG and PPS provide time information • GNSS as highly accurate local time reference but not protected • Network Time Protocol (NTP) provides msec precision to appliances • GNSS time reference Currently applied solutions neither meet accuracy nor availability requirements Substation synchronization – today Migration to Ethernet Protection relay RTU/ SCADA IEDEvent recorder HMI Substation switch IRIG-B, PPS NTP server GPS clocks NTP
  19. 19. © 2019 ADVA Optical Networking. All rights reserved.2020 • Precision Time Protocol for sub-µs timing accuracy • Converging PTP, NTP and IRIG-B into single PTP solution • Mitigating GNSS outages with network-based backup for highest availability • Assuring business continuity by monitoring sync quality Highest accuracy and best availability with satellite and network-based timing Substation synchronization – tomorrow Protection relay RTU/ SCADA IEDEvent recorder HMI Substation switch IRIG-B, PPS PTP grandmaster PTP, NTP ePRTCWAN
  20. 20. © 2019 ADVA Optical Networking. All rights reserved.2121 © 2019 ADVA Optical Networking. All rights reserved. Confidential.21 Time stamping in financial trading
  21. 21. © 2019 ADVA Optical Networking. All rights reserved.2222 Time stamping in financial trading Key players Sync vendors Solution needed End-to-end with HW-based PRTC/ePRTC and HW or SW-based PTP clients, sync performance monitoring and long-term logging Outlook Higher margin business with increase demand for accuracy Industry vertical Financial institutions, exchanges, trading venues Compelling event Support for MiFID II and SEC 630 time stamping accuracy Product needed Cesium clock (TaaS providers) Core and edge grandmaster and PTP slave (HW and SW)
  22. 22. © 2019 ADVA Optical Networking. All rights reserved.2323 Objective: • Leverage PTP accuracy • Protect investment with existing NTP clients Way forward: • NTP/PTP gateway • Enhancing NTP with precise sync signal (1PPS) • Upgrading legacy appliances with SFP GM • Sync soft client NTP migration as initial step – upselling with high precision clocks, sync assurance NTP to PTP migration in finance Trade execution NTP serverNTP client NTP over packet network PTP slave clock NTP client NTP PTP PTP grandmaster synchronized from UTC PTP over packet network NTP to PTP migration
  23. 23. © 2019 ADVA Optical Networking. All rights reserved.2424 Timing in financial trading networks Any component of the trading system needs time information Data Center Algorithmic Trading LAN Trader Trade Execution Market Data Stock Exchange Remote Broker Financial Services Broker Location NTP Server PTP GM WAN
  24. 24. © 2019 ADVA Optical Networking. All rights reserved.2525 © 2019 ADVA Optical Networking. All rights reserved. Confidential.25 Data centers and distributed data bases
  25. 25. © 2019 ADVA Optical Networking. All rights reserved.2626 Real-time data base synchronization Key players Sync vendors, self development Solution needed ePRTC integration, full solution and scalability Outlook Large market that will keep growing due to the high demand of timing and fast growth of the ICP Industry vertical Internet content and cloud service providers Compelling event Distributed, real-time data base offering, GNSS backup Product needed Cesium clock Edge grandmaster, ePRTC like solution
  26. 26. © 2019 ADVA Optical Networking. All rights reserved.2727 Establishing data consistency between data bases locally and globally Real-time data base synchronization Synchronization of data base applications to UTC Database timing at global scale • Establishing consistency among stored data • Continuous harmonization of data over time • File synchronization, distributed file systems, mirroring • Synchronized cloud data bases • Google Spanner • Amazon Dynamo • Azure Cosmos
  27. 27. © 2019 ADVA Optical Networking. All rights reserved.2828 © 2019 ADVA Optical Networking. All rights reserved. Confidential.28 Where are we going from here?
  28. 28. © 2019 ADVA Optical Networking. All rights reserved.2929 Timing for self-driving cars Any component of the self-driving car needs time information GNSS receiver PTP/NTP GM Infotainment LAN Safety systems Intra-car network Alternative PTP/NTP server 5G network Self-driving systems
  29. 29. © 2019 ADVA Optical Networking. All rights reserved.3030 From connected cars to connected cows … Synchronization
  30. 30. © 2019 ADVA Optical Networking. All rights reserved.3131 So what is the common need for all these cases? Many ways to enhance accuracy of time distribution SFP-based cell site PTP grandmaster Cell-site grandmaster with integrated dual-GNSS receiver Edge/core grandmaster featuring 1/10GE interfaces Atomic cesium clock for highest precision and longest holdover Cell site Back-/front-haul Central office ePRTC solution Substation Broker location
  31. 31. Thank you IMPORTANT NOTICE The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited. The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation. Copyright © for the entire content of this presentation: ADVA Optical Networking. gbiran@advaoptical.com

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