Admission control method and system in heterogeneous wireless network environment

Abstract

The invention discloses an admission control method and an admission control system in a heterogeneous wireless network environment. The method comprises the following steps of: when an access request is received, collecting the multi-domain information of each network and acquiring a target quality of experience (QoE) vector of a user in the access request by using an admission control entity; performing granularity partition on the information of each attribute domain in the multi-domain information according to a predefined performance index to form information granularity vectors of each attribute domain; according to the target QoE vector of a user terminal and a predefined fuzzy membership function, establishing fuzzy membership grade vectors of resource grains in each attribute domain; based on fuzzy evaluation vectors and inference rules of the resource grains in each attribute domain, establishing mapping relationships between the fuzzy evaluation vectors of the resource grains in each attribute domain and a network comprehensive evaluation index so as to acquire a comprehensive evaluation vector; and according to comprehensive evaluation, selecting the network having the highest network grade of service as an access network. Through the method and the system, an effective admission control strategy is designed for the heterogeneous wireless network and the overall performance of the heterogeneous wireless network is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an admission control method and system in a heterogeneous wireless network environment. Background technique [0002] With the development of various wireless access technologies and the diversity of business requirements, the future B3G and 4G networks will be a complex network environment characterized by heterogeneity. At the same time, due to the development of digital signal decision-making technology, chip integration technology and radio frequency technology, the ability to access multiple networks has become an important trend in the future development of smart terminals. How to rationally utilize network heterogeneity to optimize overall system performance and provide users with the best seamless service experience is a hot topic in current heterogeneous network research. [0003] In order to achieve adaptability to multi-domain environments, the system n...

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