Front Haul Interface Library Overview

The O-RAN FHI Lib is built on top of DPDK to perform U-plane and C-plane functions according to the ORAN Fronthaul Interface specification between O-DU and O-RU. The S-Plane support requires PTP for Linux version 2.0 or later. The Management plane is outside of the scope of this library implementation.

Project Resources

The source code is available from the Linux Foundation Gerrit server:
https://gerrit.o-ran-sc.org/r/gitweb?p=o-du%2Fphy.git;a=summary
The build (CI) jobs will be in the Linux Foundation Jenkins server:
https://jenkins.o-ran-sc.org
Issues are tracked in the Linux Foundation Jira server:
https://jira.o-ran-sc.org/secure/Dashboard.jspa
Project information is available in the Linux Foundation Wiki:
https://wiki.o-ran-sc.org

ODULOW

The ODULOW uses the FHI library to access the C-Plane and U-Plane interfaces to the O-RU. The FHI Lib is defined to communicate TTI event, symbol time, C-plane information as well as IQ sample data.

DPDK

DPDK is used by the FHI Library to interface to an Ethernet Port The FHI Library is built on top of DPDK to perform U-plane and C-plane functions per the ORAN Front Haul specifications

Linux PTP

Linux PTP is used to synchronize the system timer to the GPS time