Open Radio Access Networks (RAN) offer diverse economic opportunities. A transition to a flexible, modular approach within the disaggregated RAN framework is crucial, involving careful planning of RAN architecture and the deployment of specialized software applications. Collaboration across sectors is essential for efficiency and reliability, with the open-source community driving innovation. This paper explores challenges for third-party application developers in Open RAN. It provides a comparative analysis of solutions, focusing on xApp development and implementation. Challenges arise in two areas: the complexities of xApp development, particularly for advanced use cases like beam management, and issues in low-level software implementation within open platforms. In conclusion, key challenges must promote academia-industry collaboration in Open RAN. This paper shares early lessons from xApp development, guiding the field's evolution.

翻译：开放式无线接入网络（Open RAN）提供了多样化的经济机遇。在解耦式RAN框架内转向灵活、模块化的方法至关重要，这涉及RAN架构的精心规划以及专用软件应用的部署。跨部门协作对于提升效率与可靠性不可或缺，而开源社区则持续推动创新。本文探讨了第三方应用开发者在Open RAN中面临的挑战。通过比较分析各类解决方案，重点聚焦于xApp的开发与实施。挑战主要体现在两方面：一是xApp开发的复杂性，尤其是针对波束管理等高级用例；二是开放平台中底层软件实现的问题。总之，关键挑战亟需促进学术界与产业界在Open RAN领域的合作。本文分享了xApp开发的早期经验，为该领域的演进提供指导。