Features - 3.0 English

O-RAN Radio Interface O-RAN Radio Interface (PB063)

Document ID
Release Date
3.0 English
  • Provides O-RU (O-RAN radio unit) function only.
  • The core implements O-RAN Control, User and Synchronization Plane Specification v11.0 (O-RAN Specification v11.0). The core supports up to four 10 Gbps or four 25 Gbps Ethernet ports. Mixed rate mode is not supported.
    • Currently supports eight component carriers (CCs), with independent uplink and downlink timers. Twelve and sixteen CCs are supported for remapping Spatial/Antenna data onto the same resource.
    • Supports a resolution of down to one resource block (RB) per section message.
    • U-Plane support for up to 20 spatial streams for downlink, 16 spatial streams for uplink, 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.
  • Supports eCPRI and 1914.3 over standard IEEE 802.1 Ethernet packets, optionally including a single VLAN tag, 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.
  • An optional ORAN channel processing block (OCP) is available for up to 8x8 Spatial Stream/Antenna designs to correctly order RBs and pass full symbol data and from a Precoding/Beamforming/(i)FFT block in a macro radio system.