Some of the key results which advance beyond the state of the art are described below:
- One key result aimed to design efficient algorithms for multi-tier, multi-RAT networks. Active contributions at Princeton led to a technology recognition-based spectrum sensing system, identifying waveforms from diverse networks. The proposed DSS scheme does not require a coordination signaling channel between the LTE and NR networks. Instead, a technology recognition-spectrum sensing system is used to estimate traffic patterns and make spectrum allocation decisions accordingly. The goal is to enhance the seamless integration of these technologies, ensuring reliable communication and connectivity for vehicles in dynamic and varied network environments.
- To train the ML-based uncertainty-aware models, we need a certain amount of real collected EV data. Addressed the challenge of insufficient EV-related Data, particularly for capturing yearly seasonal patterns affected by holidays, events, and the growth of EVs on EV’s arrival date. To tackle this, the synthetic data is generated spanning three years (2020 to 2022) based on one year of collected ACN data. The factors influencing EV arrivals, including EV growth rate, hourly weather conditions, holidays, and events are also incorporated. This generated realistic dataset is utilized to train the uncertainty-aware prediction model.
- This result aimed at defining a general model for a digital twin ecosystem capable of representing standard EVs scenarios. To this end, a detailed investigation was carried out on the various entities that could make up this scenario, such as EVs, charging stations, and connectors, subsequently identifying specific variants and brands (e.g. BEVs, PHEVs, and EREVs for EVs). In the modeling process, digital twin types were designed, where each type abstractly represents an independent entity or variant. Likewise, the composition of digital twins was considered, allowing the decomposition of complex twins into simpler entities through parent-child relationships.