Heterogeneous Network Selection Based on Bertrand-matching Game

In order to make the best network selection and improve network access satisfaction, this paper proposes a heterogeneous network selection algorithm based on game theory. This algorithm constructs a Bertrand-matching two-tier game model of network Service Provider(SP) and User Equipment(UE), taking multiple factors at network and user levels into account. It allows UEs to select the network more precisely and meets the profit needs of SPs. Simulations show that the proposed model can achieve convergent results and maximize the profits of each SP. Compared with the model of sequential access based on UE's request and the model of the random access, the total satisfaction indexes increase by 22.44% and 38.45% respectively.