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Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization
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Telecordia NIST/WSTS Workshop: Mobile Backhaul Synchronization

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Check out the Mobile Backhaul Synchronization slides that Gil Biran will be presenting at this week's Telecordia NIST/WSTS workshop in San Jose, California

Check out the Mobile Backhaul Synchronization slides that Gil Biran will be presenting at this week's Telecordia NIST/WSTS workshop in San Jose, California

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  • 1. Gil Biran, WSTS 2013, San Jose CAMobile Backhaul SynchronizationIn Service Timing SLA Tools forMobile Networks
  • 2. © 2013 ADVA Optical Networking. All rights reserved. Confidential.22Agenda• Synchronization SLA tool requirements• Description of synchronization SLA tools in different“In Service” modes of operation• Test cases for use of Sync Probe SLA tools• Summary
  • 3. © 2013 ADVA Optical Networking. All rights reserved. Confidential.33Synchronization SLA ToolRequirements
  • 4. © 2013 ADVA Optical Networking. All rights reserved. Confidential.44SyncSLA Scope, Functions and ToolsNetwork View – Topological and status visualization of thesynchronization network.Clock Quality – A set of functions intended to monitor test andanalyze the quality of the slave clockPTP Monitoring – A set of functions intended to monitor test andanalyze the end to end PTP routesNetwork View Clock Quality PTP MonitoringMappingClockAccuracyClockAnalysisPTP NetworkAnalysisSyncSLA ScopeSyncSLA FunctionsClock Probe PTP Clock Probe PTP Network ProbeSyncSLA Tools
  • 5. © 2013 ADVA Optical Networking. All rights reserved. Confidential.55Mapping Requirements (PTP Map Case)• To adds a layer of PTP and SyncE over a topology map of thenetwork• To display Sync Routes and clock distribution based on the userpoint of interest• To monitorsynchronization topologychanges, status andsynchronizationdistributioncapabilities• To displaySync Probeattachment pointsNCD: Network Clock Domain
  • 6. © 2013 ADVA Optical Networking. All rights reserved. Confidential.66Clock Analysis Requirements(PTP Clock Probe Case)• To monitor selected clock source based on collected PTPmessages timestamps• To run multiple concurrent tests per Sync Probe• To define MTIE Mask and Mask Margin to receive Mask crossingnotifications.• To run the test using NM test framework as option• Define tests schedule• Monitor the Sync Probe and the on goingtests• View and export results of historical tests• To collect Performance Monitoring• Clock recovery performance statistics• Phase recovery performance statistics• Offset from master statistics• TS statuses
  • 7. © 2013 ADVA Optical Networking. All rights reserved. Confidential.77PTP Network Analysis Requirements• To collect and display end to end PTP communication pathperformance monitoring for PD, PDV, Frame loss andavailability.• Collect basic info from Grand master• Collect Transparent Clock residence time performance statistics• Collect and display PTP Performance statistics from Boundary Clock• Collect and display Performance statistics from Slave clock• To display different statisticsand metrics for PTP• PD statistics• PDV metrics in differentnetwork loads
  • 8. © 2013 ADVA Optical Networking. All rights reserved. Confidential.88SyncSLA Status Display Requirements• To support several levels ofdetails for step by steptroubleshooting• Peeling the onion approach• Based on the engineerknowhow• First level to provide overallSync Services health indication• Second level to provide highlevel health indication of eachtool report• Third level to provide sufficientinformation for fault localizationof each and every test
  • 9. © 2013 ADVA Optical Networking. All rights reserved. Confidential.99Description of Synchronization SLATools in Different “In Service” Modesof Operation
  • 10. © 2013 ADVA Optical Networking. All rights reserved. Confidential.1010In Service Sync Probing ValueProposition• Active /Passive probing and monitoring of multiple telecomphysical signals as well as multiple packet timing signals• Probing of physical signals, packet timing signals and thenetwork PDV can be done simultaneously• Ease finding correlation between network impairments and clockperformance• Bi-directional probing of network PDV behavior• Impact frequency delivery performance• Measurement of PTP network asymmetry• Impact phase and ToD delivery performance• In-service probing enable Synchronization as a Service withguaranteed SLA
  • 11. © 2013 ADVA Optical Networking. All rights reserved. Confidential.1111Type of Probing Tools for Sync SLA• Clock Accuracy - 2 x Clock Probe:• Calculate MTIE between physical source and reference signals• Programmable Source and reference signals• Clock Analysis - 4 x PTP Clock Probe• Calculate packet MTIE between Physical reference signal and packet flow• Probe Master to Slave or Slave to master traffic• Support parallel and tapping modes• T-SC score – simple score of internal slave clock• PTP Network Analysis - 1 x PTP Network Probe• Delay and delay variation performance statistics, Network usabilitystatistics, Packet loss statistics
  • 12. © 2013 ADVA Optical Networking. All rights reserved. Confidential.1212T-SC and T-BC Self Monitoring• Internal T-SC and T-BC 1PPS and clock outputs can ne monitoredsimultaneously using two clock probes and GPS/external reference• The network delay asymmetry can be measured using the PTPnetwork probe statistics (Sync Min Path Delay and Mean Min PathDelay)T-GMT-BC/T-SC1PPSCLKGPSAntenna10M/1PPS/BITS/SyncE (optional reference )1PPS and CLK MTIENetwork
  • 13. © 2013 ADVA Optical Networking. All rights reserved. Confidential.1313Testing T-SC and T-BC• T-SC and T-BC 1PPS and clock outputs can be monitoredsimultaneously using two clock probesT-GMT-SC/T-BC(DUT)1PPSGPSAntenna10M/1PPS/BITS/SyncE (optional reference )1PPS and CLK MTIENetworkCLK(10M/BITS/SyncE)
  • 14. © 2013 ADVA Optical Networking. All rights reserved. Confidential.1414Probing T-SC• T-SC packet timing signal (T3), 1PPS and clock outputs can bemonitored simultaneously using two clock probes and one PTPclock probeT-GMT-SC(DUT)Network1PPS CLK(10M/BITS/SyncE)GPSAntenna10M/1PPS/BITS/SyncE (optional reference )1PPS and CLK MTIEPacket MTIE based on T3Splitter or mirroringSwitch(T3 tapped)Network
  • 15. © 2013 ADVA Optical Networking. All rights reserved. Confidential.1515Probing T-BC• 1PPS and clock outputs together with T-BC slave & master packettiming signal (T3 and T1), can be monitored simultaneously usingtwo clock probes and two PTP clock probesT-GMT-BC(DUT)1PPS CLK10M/1PPS/BITS/SyncE (optional reference )1PPS and CLK MTIEPacket MTIE based on T3,T1Splitter or mirroringSwitch(T3 tapped)T-SC(T1 tapped)GPSAntennaNetwork
  • 16. © 2013 ADVA Optical Networking. All rights reserved. Confidential.1616PTP Network Active Probe• Active probe uses the internal telecom slave packets exchanged• The Sync Probe can probe the network and recover the clocksimultaneously• Provides PTP network probe statistics and network usability scoreT-GM10M/1PPS/BITS/SyncE (optional reference )Network(DUT)GPSAntenna
  • 17. © 2013 ADVA Optical Networking. All rights reserved. Confidential.1717PTP Network Passive Probe• Provides PTP network probe statistics and network usability scorebased on T1, T2, T3 and T4 informationT-GMT-SC10M/1PPS/BITS/SyncE (optional reference )Splitter or mirroringSwitchGPSAntennaNetwork(DUT)
  • 18. © 2013 ADVA Optical Networking. All rights reserved. Confidential.1818Probing Clock and NetworkSimultaneously• Clock probes, PTP Clock probes and PTP network probe can worksimultaneously, therefore both T-SC and network can bemonitored at the same timeT-GMT-SC(DUT)1PPS 10M/BITS/SyncEGPSAntenna10M/1PPS/BITS/SyncE (optional reference )1PPS and CLK MTIEPacket MTIE based on T3Splitter or mirroringSwitchPTP network Probe Statisticsand Network Usability ScoreNetwork(DUT)
  • 19. © 2013 ADVA Optical Networking. All rights reserved. Confidential.1919Test Cases for Use of Sync Probe SLATools
  • 20. © 2013 ADVA Optical Networking. All rights reserved. Confidential.2020Set-Up Description for Sync ProbeTest Cases Results• PTP Master – Symmetricom TP5000• OC-S – Tested device with IEEE1588v2Ordinary Clock-Slave (OC-S) functionality• Sync Probe-1 operates OC-S and runsSyncSLA tools• Sync Probe-2 runs only SyncSLA tools• Impairment generator runs test case 12ITU-T G.8261• The Ethernet switch is configured withmirroring mode to copy PTP frames to theMirroring Port (in the real deploymentoptical splitter may be used instead)• Sync reference is always connected to theSync Probe-2 and in some test casesconnected to the Sync Probe-1 (PPS,10MHz, BITS, Sync-E and GPS antenna)
  • 21. © 2013 ADVA Optical Networking. All rights reserved. Confidential.2121MTIE Measurements of OC-S under Test vs.OC-S in Sync Probe – Clock Accuracy
  • 22. © 2013 ADVA Optical Networking. All rights reserved. Confidential.2222Simultaneous MTIE Measurements of MultipleRemote OC-S Nodes – Clock Analysis
  • 23. © 2013 ADVA Optical Networking. All rights reserved. Confidential.2323PTP Communication Path PM and StatisticsPTP Network Analysis• With and Without Reference Clock
  • 24. © 2013 ADVA Optical Networking. All rights reserved. Confidential.2424Managing Synchronization NetworksSync SLA is mandatory for successful LTE-A deploymentPTP NetworkAnalysisClock Analysis& AccuracyNetworkViewMonitor in servicePTP performancefor SLA AssuranceVisibility ofSync Routesand clockdistributionMonitor in serviceclock performanceSynchronization as integrated part of mobile backhaul serviceSync SLA should be provided and managed like any L2/L3 service
  • 25. GBiran@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 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 orrepresentations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims anyliability 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.

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