Features - 1.1 English

O-RAN Radio Interface (PB063)

Document ID
Release Date
1.1 English
  • Provides O-RU (O-RAN radio unit) function only.
  • Supports eCPRI and 1914.3 over standard IEEE 802.1 Ethernet packets, optionally including VLAN tags, as well as UDP over IPv4 or IPv6, over Ethernet.
  • Fully programmable filtering rules allow the hardware to identify and manage user plane packets.
  • Each Ethernet and IP/UDP header field is fully programmable.
  • Alignment to an external 10 ms Start of Radio Frame pulse, enabling 1588 synchronization.
  • The core implements O-RAN Control, User and Synchronization Plane Specification v4.0 (O-RAN Specification v4.0). The core supports up to four 10 Gb/s or four 25 Gb/s Ethernet ports. Mixed rate mode is not supported.
    • Currently supports eight component carriers (CCs), with independent uplink and downlink timers.
    • Supports a resolution of down to one resource block (RB) per section message.
    • U-Plane support for up to 16 spatial streams, one additional separate stream for SSB traffic (PSS, SSS, PBCH), PRACH and four shared unsolicited data streams (for use in SRS).
    • One PRACH uplink data port.
    • The core implements the radio fronthaul interface, managing both the control and user planes, implementing the appropriate timing advances and compensating for the delay variations of packets coming from different BBUs. User radio blocks with related beam IDs are extracted from received packets at the appropriate symbol period and forwarded through AXI4-Stream outputs to external double buffers interfacing the beamforming function.