ProSAS: An O-RAN Approach to Spectrum Sharing between NR and LTE

To ensure a smooth transition from LTE to NR networks while supporting legacy devices and maintaining network The Open Radio Access Network (O-RAN), an industrydriven performance, 3GPP has proposed a comprehensive set of initiative, utilizes intelligent Radio Access Network solutions [3]. These include LTE-compatible NR numerology (RAN) controllers and open interfaces to facilitate efficient with a 15 kHz subcarrier spacing for unified time/frequency spectrum sharing between LTE and NR RANs. Also, solutions include resource reservation, we introduce the Proactive Spectrum Adaptation Scheme and downlink (DL) subcarrier puncturing to support enhanced (ProSAS), a data-driven, O-RAN-compatible spectrum sharing Machine-Type Communication (eMTC) (Technical Report solution. ProSAS is an intelligent radio resource demand (TR) 37.823), and mechanisms for resource allocation within prediction and management scheme for intent-driven spectrum NR carriers for Narrowband-Internet of Things (NB-IoT) (TR management that minimizes surplus or deficit experienced by 37.824). Lastly, to help mitigate and manage interference for both RANs.