A User-Based Heterogeneous Wireless Network Access Selection Method

Abstract

The invention relates to a heterogeneous wireless network access selection method based on users. According to different service flow communication requirements of the users, network, terminal and user parameters are extracted, parameter key factors are quantized based on a fuzzy function, parameters are compared through an analytic hierarchy process, and the weights of the key factors are obtained; then according to an ordinal number preference algorithm similar to an ideal scheme, the close degree value of alternative network parameters is obtained by combining the parameter quantized value with the weights; network access is selected according to the close degree value. Network received signal intensity is sampled and pre-estimated, and calling drop caused by attenuation of received signal intensity of a selected access network is reduced. Through an improved fuzzy decision quantitative method, algorithm complexity caused by building of a fuzzy rule base is avoided, and calculation complexity is lowered. Optimal network access can be selected according to service types of the users, network congestion is reduced, and network resources are fully utilized.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a heterogeneous wireless network access selection method. Background technique [0002] It has become a reality to access high-quality, high-speed and high-reliability communication at any time, any place and anyone. Under different technologies and user application scenarios, wireless communication services for clients provide satisfactory services that meet user needs in different network environments (3G / 4G, Wi-Fi, WiMAX, etc.). 1. The indicators of system capacity are different. Any single wireless technology cannot meet the needs of users, and it is necessary to choose access among various wireless networks. Access selection means that the mobile terminal selects an appropriate network to access in the overlapping coverage area of ​​the wireless network, so as to ensure the service quality of the user and effectively utilize the resources of the entire networ...

AI Technical Summary

Problems solved by technology

[0007] (1) The different requirements of user business types for service quality are not paid attention to. Some methods use simple attribute parameter judgment methods, lack of overall control over the global information of the system, and cannot fully and dynamically reflect the real-time network environment, resulting in a waste of network resources.

[0008] (2) Load imbalance among different networks, distributed access selection leads to concentration of a large number of users, resulting in network congestion and ping-pong effect

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