Dynamic Scheduling Algorithm based on NOMA Access and Priority Assignment for V2X communications

Abstract

Nowadays, heterogeneous and stringent requirements for the fifth generation (5G) mobile communication system are imposed to adapt with the fast growing usage of the mobile equipment including connected vehicles and rapid development of IoT. As a consequence, the limitation and inefficient using of the spectrum becomes a major problem to meet the demand of mobile broadband, extreme capacity and high throughput. Thus, to handle the challenges of access collisions, the scarcity of spectral efficiency due to the limited bandwidth and massive connectivity, non-orthogonal multiple access (NOMA) schemes have been introduced as a potential solution for 5G wireless networks. Accordingly, this paper presents a new optimal scheduling algorithm for V2X connections called Dynamic Scheduling Algorithm based on NOMA and Priority Assignment for vehicular Networks (DSA-PA-NOMA), which improves performances in terms of Quality of Service (QoS), throughput and bit error rate (BER). The proposed algorithm consider the traffic classification imposed by V2X exigency and taking into account the channel conditions of Vehicular User Equipment (VUE) expressed by the Signal-to-Interference-plus-Noise Ratio (SINR) value.