AN 908: Enabling 4G Wireless Acceleration in FlexRAN: for the Intel® FPGA Programmable Acceleration Card N3000

ID 683736
Date 1/30/2020

1.1. 4G User Image Features

FEC features:

  • Functionality independent of 25G I/O (look-aside model)
  • Support for one physical function (PF) and 8 virtual functions (VFs) simultaneously accessing acceleration
  • 64 queues supported equally split between uplink and downlink.
  • Long-term evolution (LTE) Turbo encoding with interleaving and rate matching
  • LTE Turbo decoding with sub-block de-interleaving of reverse rate matching.
  • Load balancer distributes the pending requests to transmitter and receiver
  • Early termination CRC24A and CRC24B
  • Software enablement by baseband device (bbdev) API (targeted to upstream to Data Plane Development Kit (DPDK)
  • Function-level reset

Fronthaul IO features:

  • 25G MAC and 25G PHY IP connectivity to retimer and a quad small form factor pluggable (QSFP).
  • 40G MAC and 40G PHY IP connectivity to Fortville networking device
  • Gearbox to enable 25G connectivity to QSFP.
  • In-line compression and decompression.
  • Software enablement by Open Platform Acceleration Environment (OPAE), DPDK and bbdev.