High-precision time synchronization networking algorithm of 5G base station based on stochastic optimization

Compared with traditional 3G and 4G networks, 5G network, as a new network, can provide higher-speed mobile service coverage. In 5G networks, base stations need to achieve accurate time synchronization to ensure communication quality. In order to keep the accurate time of 5G network, a time synchronization system between satellite ground base station and software-defined optical network controller based on optical wireless network is proposed, which has the advantage of greatly improving the accuracy of time synchronization of ground base station. Based on random optimization, an air interface-based clustering synchronization algorithm for Small Cell is proposed. Network synchronization is divided into two synchronization processes, an intra-cluster synchronization process and an inter-cluster synchronization process. Simulation results show that this algorithm can ensure the synchronization accuracy of multiple nodes in the cluster, which is at least 6-10us higher than the traditional air interface synchronization process.