The paper Heterogeneous Multi-Operator Spectrum Sharing Architecture for Massive IoT Access with NOMA won the Best Conference Paper Award (the only one) in The 2020 IEEE 92nd Vehicular Technology Conference (IEEE VTC2020-Fall).
For the massive access of Internet-of-Things (IoT) devices in 5G or beyond 5G (B5G) wireless networks, how to support the coexisting of cellular users and massive IoT devices with quality-of-service (QoS) guarantees over limited spectrum is challenging. This paper proposes a heterogeneous multi-operator spectrum sharing architecture by leveraging the spectrum trading to support the coexistence of QoS-guaranteed cellular users and massive IoT devices with non-orthogonal multiple access (NOMA). In the architecture, we formulate the spectrum trading between the wireless spectrum provider (WSP) and mobile network operators (MNOs) as a Stackelberg pricing game. The method can maximize the payoffs of MNOs and WSP simultaneously, and support more IoT devices. This conference was held online from November 18th to December 16th, 2020. The IEEE VTC2020-Fall is the flagship conference of the IEEE Vehicular Technology Society, which has important international influence in the fields of wireless communication, mobile network and vehicular technology.
