Enterprises

This research project primarily focuses on the development of Open Radio Access Network (O-RAN) architecture promoted by the O-RAN Alliance and the 3rd Generation Partnership Project (3GPP).

The core of the research is to deeply explore the multi-vendor interoperability and open interface characteristics of O-RAN Centralized Unit (CU) and Distributed Unit (DU).

In the O-RAN system architecture, programmable technology and disaggregation technology are key elements for achieving network flexibility, scalability, and multi-vendor interoperability. The purpose of O-CU and O-DU disaggregation design in the O-RAN architecture is to separate traditional base station functions, enabling equipment from different vendors to work collaboratively, thereby enhancing overall network flexibility.

Research on this CU/DU disaggregation architecture not only promotes the flexibility and scalability of radio access networks but also provides a solid foundation for diverse competition in the telecommunications market.

This research project will focus on the Option-7.2 disaggregation architecture defined by the O-RAN Alliance, while considering the security challenges that may arise from the open architecture of O-RAN modules.

Due to the characteristics of open architecture, its key transmission protocols, software-defined networking, intelligent control mechanisms, communication interfaces, and system physical interfaces may all become targets for potential attackers.

The research plans to use the Open Air Interface (OAI) software-defined architecture as the main development axis, combined with the commercial 5G simulation system platform (Viavi TM500), to conduct multi-vendor interoperability research and explore security issues of open interfaces.

The entire research project will be executed in two phases. The first phase focuses on establishing a connection test system for open-source OAI User Equipment (UE), O-DU/O-RU, O-CU, and Core Network (5G Core Network, CN), using Free 5GC as the core network platform.

The second phase delves deeper into the Option-7.2 disaggregation architecture defined by the O-RAN Alliance, establishing a connection test system for CN, UE, O-DU/O-CU, and O-RU, using Viavi TM500 as the testing platform.

This phase will further analyze potential security threats and corresponding security requirements for open interfaces. Through standardization and testing processes, the project aims to achieve a true multi-vendor interoperable environment, enhancing overall network performance and user experience.