OpenAirInterface MOSAIC5G Project Group

The newly created MOSAIC5G (M5G) PROJECT GROUP aims to transform radio access (RAN) and core networks (CN) into agile and open network-service delivery platforms. Such a platform allows for exploring new use-cases of interest to different vertical industries. Mosaic5G introduces the world’s first ecosystem of 5G R&D open source platforms ranging from the centralized network control to the mobile edge network deployment.


This PROJECT GROUP (PG) will develop a set of extendable control and orchestration frameworks with extendable APIs on the top of OpenAirInterface RAN and CN to enable fine-grained monitoring and programmability of the underlying network infrastructure. It further allows to leverage a customizable 4G/5G service delivery platform empowered by an ecosystem of intelligent network applications (xApps) and service development kits (SDK). The figure above shows the M5G stack and its relation to the OpenAirInterface RAN and CN.

The foremost focus of the M5G PG will be on providing software implementations of
– the O-RAN E2 protocol named E2 Agent,
– a flexible RAN intelligent controller named FlexRIC,
– a flexible Core controller named FlexCN, and
– an intelligent RAN and CN operator named Trirematics.

The final goal will be to deliver an open and agile 4G and 5G service platform and a range of xApps for the OAI community.

OAI MOSAIC5G Roadmap – June 2021

The following chart give the roadmap of future implementations over a period of three to four quarters. As we make progress over coming quarters, we shall regularly keep updating the chart here to reflect the new milestones covering a similar period.


To accelerate the delivery of a feature-rich and stable 5G software, the OSA launched a new sponsorship mechanism called PROJECT GROUP in Q1 2021 for its partners, especially the industry, who are invited to donate financial resources to developments through these PROJECT GROUPS.

After the successful sponsorship campaign for the OAI RAN and CN PROJECT GROUPS, the latest in the bandwagon is the OAI MOSAIC5G PROJECT GROUP.  This PG has been set up at the OSA with the goal of designing agile RAN and CN service platforms capable of providing fine-grained monitoring, control, and orchestration of the underlying OAI network infrastructure. The project will be developed and the software distributed under the OAI Public License V1.1. The M5G PROJECT GROUP will provide software implementations of the O-RAN E2 protocol (named E2 Agent), Flexible RAN intelligent controller (named FlexRIC), Flexible Core controller (name FlexCN), and intelligent RAN and CN operator (named Trirematics) over the course of two years. The final goal will be the delivery of an open and agile 4G and 5G service platform and a range of xApps for the OAI community.

Parties seriously interested in leveraging the MOSIAC5G code for their use-cases and thus looking to influence the development roadmap can participate by joining the Alliance as Strategic Members and then participating in the OAI MOSAIC5G PROJECT GROUP in one of the sponsorship categories. For more details on the working of the Project Group and sponsorship categories, please download the Project Group Charter.

For enquiries on how to participate in the OAI 5G RAN PROJECT GROUP, please write to: contact@openairinterface.org

Project Code

Please visit the home of the project on Gitlab: oai / mosaic5G · GitLab (eurecom.fr)