Scheduling Algorithm for V2X Communications Based on NOMA Access

Abstract

5G network must support a large number of Vehicle-to-Everything (V2X) connections with high throughput and low latency. The existing resource allocation scheme based on orthogonal multiple access (OMA) seems to be unsuitable for dense networks due to the limitation of the spectral bandwidth and the available resources. This work presents a new algorithm named SAVCN (Scheduling Algorithm for V2X Communication based on NOMA), for 5G network. In non-orthogonal multiple access (NOMA) scheme, the same resource can be shared by several transmitters. The proposed algorithm improves network performances in terms of throughput, fairness, and error rate. In fact, SAVCN assigns the available resource blocks (RBs) in order to maximize the throughput by consideration of the minimal distance between transmitters and receivers. It maximizes also the number of served V2X users and minimizes the bit error rate. Simulation results indicate promising performance for SAVCN.