Research on Technical Scheme and Overhead Calculation of Dynamic Spectrum Sharing

Dynamic spectrum sharing (DSS) technology is a dynamic and flexible allocation of spectrum resources for different communication technologies in the same frequency band. This technology is of great significance in the rapid deployment of 5G network, the smooth evolution from 4G to 5G, and the wide coverage of 5G network by using low frequency band. Although DSS can improve the utilization rate of spectrum resources by flexibly allocating spectrum resources in most cases, the introduction of DSS also brings additional spectrum overhead. At present, there is no standard calculation method to evaluate the additional overhead of different technical schemes in the industry. In this paper, we will introduce the current popular DSS technical solutions and propose a unified overhead calculation method, summarize the additional overhead of the mainstream implementation schemes, and analyze the efficiency of various DSS technical schemes by comparing the overhead loss before and after the introduction of DSS technology. In addition, a simple DSS network environment is set up in the laboratory to verify the performance of DSS technical scheme and overhead calculation method.