O-CU (central unit, CP and UP).

RRC, PDCP and SDAP functions split into control and user planes and run centrally.

Standards

  • 3GPP TS 38.401 (NG-RAN architecture)
  • 3GPP TS 38.463 (E1AP)
  • 3GPP TS 38.473 (F1AP)

O-RAN architecture and open interfaces