RESOURCE ALLOCATION FOR DEVICE-TO-DEVICE COMMUNICATION IN THREE-TIER NETWORK USING STACKELBERG GAME THEORY

- Device-to-Device (D2D) underlay cellular networks can s ignificantly improves the user’s throughput. Nevertheless, the three-tier interference between macrocell- femtocell- D2D systems is becoming challenging in the heterogeneous network. In this paper, first we formulated a Stackelberg game approach, with multiple leaders-multiple followers, macrocell base station (M-BS), and femtocell base station (F-BS) as the leaders and D2D pairs as followers. The leaders minimize the interference by charging prices from followers and followers react to this charging price and find an optimal transmit power. In current work D2D pairs are categorized into sub-classes based on their movement inside the network, each class represented to a different utility function. From different utility functions we get the optimal price for leaders and optimal transmit power for followers. The simulation results show that the proposed approach reduces the transmit power according to the D2D users' requirement and improves system throughput.