6G-LoRaGRAN: A Testbed for Researching Lorawan and 5G Integration

The rapid growth of the Internet of Things (IoT) has increased demand for Low Power Wide Area Networks (LPWANs) that support massive Machine-Type Communications (mMTC) in Fifth Generation (5G) ecosystems. However, integrating LPWAN technologies like Long Range Wide Area Network (LoRaWAN) with 5G infrastructure presents challenges. This paper introduces 6G-LoRaGRAN, a novel testbed framework designed to facilitate research on LoRaWAN and 5G integration. Developed at the University of Granada, this testbed connects a real LoRaWAN network to 5 G cores across multiple pilot sites as part of the European 6G-SANDBOX project. The testbed supports remote experimentation through an Experiment Manager, enabling researchers to explore diverse configurations, including customizable network slices, traffic patterns, and realtime resource management. With over 100 deployed LoRaWAN devices and automated connectivity monitoring, the platform serves as a powerful tool for experimentation within a realworld LoRaWAN-5G testbed. Two experiments are presented. The first compares empirical results to theoretical collision probabilities, demonstrating the testbed's ability to support research on LoRaWAN performance and scalability. The second uses two LoRaWAN slices to demonstrate inter-slice isolation.