Method and device for selecting access network under heterogeneous network based on game theory

Embodiments of the invention provide a method and a device for selecting an access network under a heterogeneous network based on a game theory. The method comprises the following steps of obtaining a sorted list of available networks of each business in the heterogeneous network; obtaining a plurality of network access strategies of the heterogeneous network according to the sorted list of the available networks of each business; and obtaining the network access strategy higher than a Nash equilibrium solution according to network parameters of each network in the heterogeneous network and a preset network parameter game principle under multiple businesses, determining the network access strategy after business game in the network access strategy higher than the Nash equilibrium solution, and taking the network corresponding to the network access strategy after the business game as a final access network of all businesses in the heterogeneous network. Through application of the embodiments of the invention,