Method for selecting access network in heterogeneous network

Abstract

The invention discloses a method for selecting an access network in a heterogeneous network. The method includes the following steps: building of a non-cooperative game model between a user and a network according to a game theory method; model solution which determines an optimizing strategy for balancing mutual interest of the network and the user; and experiment simulation and numerical analysis. A non-monotone network service quality quantization model is built by combining a gray level relevance idea and a sigmoid function in a robot study mechanism. Simulation shows that the model fits an actual heterogeneous fusion network scene, according to the non-cooperative game model between the user and the network, the strategy of balancing the mutual interest of the user and the network is adopted, and a network optimization pricing strategy is determined by solving the non-cooperative game model. In addition, the method helps the user to select the most suitable access network, accordance is provided for formulating a QoS standard of the heterogeneous network fusion system, and service requirements of different levels of the user under different scenes are met.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a method for selecting an access network in a heterogeneous network. Background technique [0002] With the rapid development of wireless communication technology, the coexistence of heterogeneous wireless networks is gradually changing to the direction of complexity and integration. The next generation wireless network system will integrate multiple wireless access technologies and support multiple network access ports. The user terminal can obtain different services by accessing a variety of different networks, and can realize seamless handover between the access networks. In order to ensure that the mobile terminal obtains good service quality, a reasonable decision-making algorithm should be adopted for The user selects an appropriate access network. [0003] In recent years, the research on access selection methods of heterogeneous wireless networ...

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method for selecting an access network in a heterogeneous network, aiming at solving the problem that existing methods all assume that the performance parameters of the network are monotonic, but this is not the case in actual scenarios; in addition, the above Most of the literature considers only the user side or the unilateral interests of the network side when making a decision to choose a network, but rarely considers both the network and the user to balance the interests of both parties.

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