边听边说：迈向 O-RAN 中基于 dApp 的实时频谱共享
Listen-While-Talking: Toward dApp-based Real-Time Spectrum Sharing in O-RAN
AI总结：
本文提出在 O-RAN 中利用 dApp 实现 CBRS 频段实时频谱感知与 gNB 控制，并基于 OAI、COTS UE 完成空口演示，为免 SAS 的频谱共享提供验证。
摘要：
本演示论文提出了一种基于 dApp 的实时频谱共享场景：在该场景中，实现 NR 协议栈的第五代（5G）基站根据公民宽带无线电服务（CBRS）频段中的现有优先用户来调整其发射和接收策略。dApp 负责从下一代节点基站（gNB）获取相关测量结果、运行频谱感知推理，并在检测到主要现有用户传输时以控制动作配置 gNB。该方法建立在 dApp 之上，dApp 将 O-RAN 框架扩展到实时域和用户平面域。因此，它避免了在 CBRS 频段中使用专用频谱接入系统（SAS）的需要。演示设置基于开源 5G OpenAirInterface（OAI）框架，我们在其中实现了一个 dApp，该 dApp 与 gNB 接口连接，并在空口无线环境中与商用现货（COTS）用户设备（UE）通信。当现有用户存在活动传输时，dApp 将检测到主要用户的存在并告知 gNB。dApp 还将强制执行控制策略，以调整无线接入网（RAN）的调度和传输策略。本演示为在下一代蜂窝网络中结合 O-RAN 架构使用基于 dApp 的频谱感知的潜力提供了有价值的见解。
英文摘要：
This demo paper presents a dApp-based real-time spectrum sharing scenario where a 5th generation (5G) base station implementing the NR stack adapts its transmission and reception strategies based on the incumbent priority users in the Citizen Broadband Radio Service (CBRS) band. The dApp is responsible for obtaining relevant measurements from the Next Generation Node Base (gNB), running the spectrum sensing inference, and configuring the gNB with a control action upon detecting the primary incumbent user transmissions. This approach is built on dApps, which extend the O-RAN framework to the real-time and user plane domains. Thus, it avoids the need of dedicated Spectrum Access Systems (SASs) in the CBRS band. The demonstration setup is based on the open-source 5G OpenAirInterface (OAI) framework, where we have implemented a dApp interfaced with a gNB and communicating with a Commercial Off-the-Shelf (COTS) User Equipment (UE) in an over-the-air wireless environment. When an incumbent user has active transmission, the dApp will detect and inform the primary user presence to the gNB. The dApps will also enforce a control policy that adapts the scheduling and transmission policy of the Radio Access Network (RAN). This demo provides valuable insights into the potential of using dApp-based spectrum sensing with O-RAN architecture in next generation cellular networks.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
