4G/5G coexistent dynamic spectrum sharing scheme based on dual bargaining game approach

Abstract

In this paper, we propose a novel dynamic spectrum sharing (DSS) scheme while satisfying diversified service requirements in the 4G/5G coexisting network platform. To design our scheme, we adopt the basic idea of the cooperative game theory and different allocation rules. In a cooperative game manner, our proposed scheme is formulated as a two-level dual bargaining model. This hierarchical approach can effectively share the limited wireless spectrum resource to significantly reduce the computational complexity and control overheads. To give mutual advantages for network agents, we leverage the full synergy of 4G/5G coexisting infrastructure while maximize the system efficiency. Finally, simulation results show the advantages of the proposed approach by comparing with the existing state-of-the-art spectrum sharing protocols. Specifically, the throughput, payoff and service provision are improved by about 5%, 10% and 10%, respectively, under dynamically changing network system environments. It is worth noting that our dual bargaining based strategic control mechanism facilitates the coordination and cooperation among network entities to effectively allocate the limited spectrum resource. This property can improve the performance measures in the 4G/5G coexisting platform.