Anti-jamming channel access in 5G ultra-dense networks: a game-theoretic learning approach

Abstract

This paper investigates the Quality of Experience (QoE) oriented channel access anti-jamming problem in 5th Generation Mobile Communication (5G) ultra-dense networks. Firstly, considering that the 5G base station adopts beamforming technology, an anti-jamming model under Space Division Multiple Access (SDMA) conditions is proposed. Secondly, the confrontational relationship between users and the jammer is formulated as a Stackelberg game. Besides, to achieve global optimization, we design a local cooperation mechanism for users and formulate the cooperation and competition among users as a local altruistic game. By proving that the local altruistic game is an Exact Potential Game (EPG), we further prove the existence of pure strategy Nash Equilibrium (NE) among users and Stackelberg Equilibrium (SE) between users and jammer. Thirdly, to obtain the equilibrium solutions of the proposed games, we propose an anti-jamming channel selection algorithm and improve its convergence speed through heterogeneous learning parameters. The simulation results validate the convergence and effectiveness of the proposed algorithm. Compared with the throughput optimization scheme, our proposed scheme obtain a greater network satisfaction rate. Finally, we also analyze user fairness changes during the algorithm convergence process and get some interesting conclusions.