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SmartRIS low cost automated ingress detection

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Presentation by Matti Susi, Senior Product Manager of Management Software, at Teleste customer seminar in Maastricht, March 2019

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SmartRIS low cost automated ingress detection

  1. 1. Teleste Proprietary. All rights reserved. Company restrictedTeleste Proprietary. All rights reserved. Company restricted SmartRIS - Low cost automated ingress control How to improve data service availability using ingress control Matti Susi, Senior Product Manager, Management Software
  2. 2. Teleste Proprietary. All rights reserved. Company restricted Agenda 1. Introduction to ingress control 2. Manual ingress control workflow 3. Ingress analyser in intelligent nodes and amplifiers 4. Automatic local ingress blocking 5. Cable modem TX level considerations 6. Introduction to SmartRIS – automatic ingress control
  3. 3. Teleste Proprietary. All rights reserved. Company restricted ‘First aid’: Limit the DOCSIS service outage to as few customers as possible. ‘The cure’: Localise the ingress source to enable fast and precise corrective action. The two purposes of ingress control
  4. 4. Teleste Proprietary. All rights reserved. Company restricted Introduction to ingress control • Ingress is detected by various methods: • Dedicated ingress measurement systems (Pathtrak etc.) • Ingress monitor in intelligent nodes and amplifiers • CMTS SNR and/or upstream spectrum capture • Ingress switches are operated (remotely) in amplifiers, sometimes also in nodes. The process is iterative. • An ingress switch attenuates return path by typically 6 dB. • CMTS commands the modem to increase its TX level  SNR improves. • The ingress input point is localised from the network model.
  5. 5. Teleste Proprietary. All rights reserved. Company restrictedTeleste Proprietary. All rights reserved. Company restricted Manual ingress control workflow
  6. 6. Teleste Proprietary. All rights reserved. Company restricted Network normal: No ingress, SNR OK, services OK Modem TX level CMTS SNR
  7. 7. Teleste Proprietary. All rights reserved. Company restricted Ingress enters the network: US SNR goes down Modem TX level CMTS SNR Ingress
  8. 8. Teleste Proprietary. All rights reserved. Company restricted Ingress enters the network: Node and amps raise alarms Modem TX level CMTS SNR Ingress
  9. 9. Teleste Proprietary. All rights reserved. Company restricted Action: An operator activates ingress control switch Modem TX level CMTS SNR Ingress
  10. 10. Teleste Proprietary. All rights reserved. Company restricted Consequence: Modem TX level and CMTS SNR go up CMTS SNR Modem TX level Ingress
  11. 11. Teleste Proprietary. All rights reserved. Company restricted Network status: Services is restored and repair dispatched CMTS SNR Modem TX level Ingress
  12. 12. Teleste Proprietary. All rights reserved. Company restricted Network repaired: Ingress away, CNR OK, services OK Modem TX level CMTS SNR
  13. 13. Teleste Proprietary. All rights reserved. Company restrictedTeleste Proprietary. All rights reserved. Company restricted Ingress analyser in intelligent nodes and amplifiers
  14. 14. Teleste Proprietary. All rights reserved. Company restricted Ingress analyser principle
  15. 15. Teleste Proprietary. All rights reserved. Company restrictedTeleste Proprietary. All rights reserved. Company restricted Automatic local ingress blocking
  16. 16. Teleste Proprietary. All rights reserved. Company restricted Local ingress blocking in intelligent amplifiers and nodes • Ingress monitor measures upstream noise/ingress level at predefined frequencies. • Each frequency may have a warning and an alarm limit. • If enough frequencies exceed the limit (tolerance), an ingress alarm is raised. • If the alarm is active longer than the activation delay, ingress switch is activated by the amplifier software. • If the alarm clears, ingress switch is retuned to 0 dB after deactivation delay. • Escalation principle: The further in the cascade an amplifier is, the shorter is the activation delay.
  17. 17. Teleste Proprietary. All rights reserved. Company restricted Setting up automatic ingress blocking Ingress monitor Automatic ingress blocking
  18. 18. Teleste Proprietary. All rights reserved. Company restrictedTeleste Proprietary. All rights reserved. Company restricted Cable modem TX level considerations
  19. 19. Teleste Proprietary. All rights reserved. Company restricted Do cable modems have enough TX level margin? Network 1: 750 k modems Network 2: 5000 modems A few % of modems have small or no margin  ingress switch will drop them off These modems send at very low level  are susceptible to ingress
  20. 20. Teleste Proprietary. All rights reserved. Company restrictedTeleste Proprietary. All rights reserved. Company restricted SmartRIS – automatic ingress control
  21. 21. Teleste Proprietary. All rights reserved. Company restricted Why SmartRIS? • Manual ingress control loads the maintenance personnel. • Local ingress blocking is only available with intelligent amplifiers. • One-way ingress control systems are getting more popular (Teleste RIS, Delta Fostra, Technetix TNMS, Vector VIG etc.). • It would be a clear advantage if basic ingress control could be automated.
  22. 22. Teleste Proprietary. All rights reserved. Company restricted What is SmartRIS? SmartRIS is an automation process running in Argus server. • Ingress analyser in intelligent node or amplifier measures ingress. • After detecting an ingress alarm, Smart RIS starts looking for the ingress input point. • Search is done down from the node, switch by switch. • After activating each switch, SmartRIS measures ingress level change. • Search stops at last effective ingress switch. • Search result is reported as Argus event.
  23. 23. Teleste Proprietary. All rights reserved. Company restricted SmartRIS settings Global function enabled/disabled (‘master switch’) Delay values: • start delay • measurement delay • wait time • reset delay Attenuate versus report only SmartRIS is enabled per node
  24. 24. Teleste Proprietary. All rights reserved. Company restricted SmartRIS prerequisites 1. Node ingress monitor must be sensibly configured. • Measurement frequencies • Alarm limits and tolerance 2. Argus must have a proper network model. • RF connections • Output ports for amplifiers with multiple ICS 3. Global SmartRIS settings must match the ingress monitor settings.
  25. 25. Teleste Proprietary. All rights reserved. Company restricted SmartRIS workflow IP Actor Element Name Address Time Message 172.30.18.141 Element ACE8 D 3.1 node Telestenkatu 1 11:42:01 Ingress warning 172.30.18.141 Element ACE8 D 3.1 node Telestenkatu 1 11:47:01 Ingress alarm 172.30.18.141 SmartRIS ACE8 D 3.1 node Telestenkatu 1 11:47:11 SmartRIS: Search started 172.30.18.141 SmartRIS ACE8 D 3.1 node Telestenkatu 1 11:47:11 SmartRIS: Searching, element D 3.1 node, port 1 172.18.41.4 SmartRIS ACE3 D 3.1 amp 2 Telestenkatu 1 11:47:11 SmartRIS commanded ICS 1 to ATTENUATED 172.30.18.141 SmartRIS ACE8 D 3.1 node Telestenkatu 1 11:47:11 SmartRIS: Searching, element D 3.1 amp 2, port 1 172.30.18.141 SmartRIS ACE8 D 3.1 node Telestenkatu 1 11:47:28 Ingress level change (1): 0.0 dB 172.18.41.4 SmartRIS ACE3 D 3.1 amp 2 Telestenkatu 1 11:47:28 SmartRIS commanded ICS 1 to ON 009050078705 SmartRIS RIS amp E3 test Turuntie 25 11:47:29 SmartRIS commanded ICS 1 to ATTENUATED 172.30.18.141 SmartRIS ACE8 D 3.1 node Telestenkatu 1 11:47:29 SmartRIS: Searching, element E3 test, port 1 172.30.18.141 SmartRIS ACE8 D 3.1 node Telestenkatu 1 11:47:46 Ingress level change (1): -5.5 dB 172.30.18.141 SmartRIS ACE8 D 3.1 node Telestenkatu 1 14:15:56 SmartRIS: Finished, element E3 test, port 1 172.30.18.141 Element ACE8 D 3.1 node Telestenkatu 1 11:48:01 Ingress warning Trigger event
  26. 26. Teleste Proprietary. All rights reserved. Company restricted Ingress switch control methods supported by Argus Intelligent equipment • All Teleste • All HMS (Cisco, Wisi…) • Kathrein (does not support standard HMS control) One-way control systems • Teleste RIS • Delta Fostra • Technetix via TNMS software
  27. 27. Teleste Proprietary. All rights reserved. Company restricted SmartRIS current status and future developments Current status • SmartRIS is available in Argus 1.2, release 1.3 will have refinements. • Pilot testing in real networks will start soon. Future developments • Use other ingress measurement sources, CMTS/RPD SNR. • More intelligent, self-learning algorithms. • Node ingress measurement ‘in-band’. Software options for current HW are under study.

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