DRNC - Drift Radio Network Controller

When a UE (User Equipment), in the connected state is handed onto a cell associated with a different RNS (Radio Network Subsystem) it is said to have drifted. The RRC (Radio Resource Control) connection however still terminates with the SRNC (Serving RNC). In effect the DRNC acts as a switch, routing information between the SRNC and the UE.


  • Fully interactive 3GPP based network map
  • Narrated call flows
  • Detailed network procedures

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