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Self Organized Networks in Mixed 2G and 4G

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Self Organized Networks in Mixed 2G and 4G

  1. 1. SON and self-healing in unified 2G/4G RAN David Burgess, Legba Inc. IPWC SON Workshop April 2015 Copyright © Legba Incorporated 2015
  2. 2. Mixed 2G/4G future • SON normally a 4G topic • 2G will persist in many places • Mixed 2G/4G will continue to be common • Apply SON to 2G to lower management costs 2G 4G SON
  3. 3. YateBTS, YateENB and YateUCN • Mixed 2G/4G networks • Making 2G RAN more LTE-like • self-organizing and self-healing in 2G and 4G RAN • Unified Core Network (UCN) provides Core functions for both 2G and 4G YateUCN YateBTSYateENB YateUCN
  4. 4. Peering in YateBTS • No BSC means the BTS units connect directly • Functionality similar to LTE X2 • Neighbor information exchange through peering YateUCN YateBTSYateENB YateBTS YateUCNYateUCN Peering Peering Any IP Backhaul YateENB X2
  5. 5. Seeding Neighbor List - step 1 Start from a "seed list" based on coverage estimates that exist in the site provisioning server YateBTS Site provisioning Server Location Seed list
  6. 6. Neighbor Discovery - step 2 Web-walking, using neighbors lists of neighbors, through the peer interface
  7. 7. Optimization - step 3 • Use measurement reports from handsets • Use congestion reports from neighbors • Automatic detection of offline neighbors • Use KPIs to close the optimization loop Neighbors RRC & Monitoring MS Neighbor list Congestion Reports Signaling Measurements KPIs Optimization
  8. 8. Self healing - step 4 • Detection of offline neighbors • Real time congestion management • Neighbor list adjustments • Power and tilt adjustments
  9. 9. Failover/load balancing for Core in both 2G and 4G • BTS-UCN many-to-many relationship • UCN IP addresses distributed to BTSs and ENBs via DNS YateUCN YateBTSYateENB YateBTS YateUCNYateUCN Any IP Backhaul
  10. 10. Summary • Unified SON management simplifies network operations. • Mixed 2G/4G networks will be with us for years. • Frees staff resources for tasks that cannot be automated More information: - www.yate.ro - David Burgess: +1-707-208-2622 david@leg.ba

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