异构无线网络接入选择算法综述

移动互联网和无线通信技术的发展形成多种无线网络共存、覆盖范围重叠的异构无线网络,各种无线接入技术的差异和单一网络技术无法满足用户的全部需求使异构无线网络融合成为必然,接入选择作为异构无线网络融合的关键技术之一已成为研究热点.在简述异构无线网络基本架构和接入选择概念的基础上,对接入选择算法进行分类总结与详细对比分析,深入剖析各算法采用的方法和特点,同时对存在的问题进行总结归纳,并展望了未来的研究方向.

A survey of access selection algorithms in heterogeneous wireless networks

The development of mobile Internet and wireless communication technologies promote heterogeneous wireless networks (HWNs), in which a variety of wireless networks coexist and coverage overlap. The differences between various wireless access technologies and single network cannot meet all the requirements of users. Consequently, it is inevitable for the integration of HWNs. The access selection as one of the key technologies of HWNs has become a research hotspot. Based on analyzing the infrastructure of HWNs and the concepts of the access selection, this paper focuses on the classification and detailed comparative analysis of the access selection algorithm. Simultaneously, the existent problems are summarized, and the future research directions and challenges are presented.