The Need for an Access Grandmaster Clock


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Michael Ritter discusses the inclusion of an IEEE 1588v2 mini-Grandmaster clock on the ADVA FSP 150 family of mobile backhaul products and its impact on LTE-Advanced radio access networks.

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The Need for an Access Grandmaster Clock

  1. 1. Dr. Michael RitterJune 18, 2013The Need for anAccess Grandmaster
  2. 2. © 2013 ADVA Optical Networking. All rights reserved. Confidential.2LTE-Advanced Is On Its WayAccurate phase synchronization of base station clocks becomes mandatory• Small cells enable more efficientspectrum utilization• Time Division Duplex (TDD) modeprovides more flexibility• Inter-cell interference coordinationincreases user experience• Coordinated multipoint transmissionfor more capacity at cell edgesDownlinkUplink
  3. 3. © 2013 ADVA Optical Networking. All rights reserved. Confidential.3G.8275.1 Synchronization ModelMajor CAPEX to upgrade networks forces operators to look for alternatives• Timing support from the backhaul network is required to meet thestringent requirements• G.8275.1 Telecom Profile mandates full on-path support• On path-support may require hardware swap or a completely newnetwork installationPTPT-BCGM T-BC T-BCPTP PTP PTP
  4. 4. © 2013 ADVA Optical Networking. All rights reserved. Confidential.4Alternative Synchronization ModelInvestment protection by leveraging legacy backhaul network resources• Distributed grandmaster architecture with deployment near or atthe cell site• Ideal for macro and small cell deployment as well as last mileaggregation in FDD and TDD networks• Fallback to G.8265.1/G.8275.2 boundary clock for increased reliabilityPTPGM Access GMPTP PTPCLOCK ANALYSISClock recovery ScorePhase recovery ScorePTP-clock-probe1-1TS1-1PTP-clock-probe1-2PTP-clock-probe1-4LegacyBackhaul Network
  5. 5. © 2013 ADVA Optical Networking. All rights reserved. Confidential.5Syncjack™ BenefitsSyncjack™ enables SLA-based sync delivery in wholesale applications• SyncE and 1588v2 functionality integrated intoall FSP 150 Carrier Ethernet devices• Industry-leading frequency and time recoveryfor slave, transparent and boundary clock• High quality oscillator and multiple clock domains• Clock accuracy assurance and in-serviceverification across the entire backhaul network• Comprehensive tools for clock accuracymeasurement, clock analysis and PTP network analysis
  6. 6. © 2013 ADVA Optical Networking. All rights reserved. Confidential.6Mobile Backhaul Solution OverviewAccess & Demarcation Last Mile Aggregation MetroFSP 150CC-XG210 FSP 150EG-X FSP 150EG-XFSP 150CC-GE206FSP 150CC-GE206FSP 150CC-GE114SHFSP 150CC-GE114S• Service OAMtermination• SONET/SDH servicetermination• Large aggregationsites• Small and medium cell sites• E1/T1 backhaul• Sync service delivery• Cell tower hubs• Small and mediumaggregation sitesFSP 150SP-100
  7. 7. mritter@advaoptical.comThank YouIMPORTANT NOTICEThe content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in thispresentation. 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 orimplied. 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.