The open radio access network (O-RAN) describes an industry-driven open
architecture and interfaces for building next generation RANs with artificial
intelligence (AI) controllers. We circulated a survey among researchers,
developers, and practitioners to gather their perspectives on O-RAN as a
framework for 6G wireless research and development (R&D). The majority
responded in favor of O-RAN and identified R&D of interest to them. Motivated
by these responses, this paper identifies the limitations of the current O-RAN
specifications and the technologies for overcoming them. We recognize
end-to-end security, deterministic latency, physical layer real-time control,
and testing of AI-based RAN control applications as the critical features to
enable and discuss R&D opportunities for extending the architectural
capabilities of O-RAN as a platform for 6G wireless.

这篇研究论文主要介绍了 O-RAN 作为 6G 无线研究和开发框架的限制，并提出了解决这些限制的技术措施，为 O-RAN 平台的能力扩展和 6G 无线发展提供了研发机会，其中关键特性包括端到端的安全，确定性延迟，物理层实时控制以及基于人工智能的 RAN 控制应用的测试。