泛在异构网络水平QoS映射方案和技术综述

Survey on Horizontal QoS Mapping Strategy and Technology over Wireless Heterogeneous Networks

不同网络的QoS机制存在差异,各种应用的QoS需求也不同,给泛在异构网络QoS保证带来挑战。为了满足异构网络QoS需求,最大化利用网络资源,最小化操作代价,应建立一种能够保证异构网络QoS的机制。QoS映射是有效的解决方案,它可以完成不同网络QoS之间的自动翻译,有利于降低问题的复杂度,能保证异构网络的QoS需求。因此,本文对现有的异构网络水平QoS映射方案和技术进行综述和比较,重点介绍了AQCM-ASM映射策略和FAbS模型,并给出了今后的研究方向。

End-to-end QoS provisioning in heterogeneous networks is a challenging research issue,since QoS mechanisms in various networks are different and with the requirement to support a variety of user applications of different characteristics.To maximize network resources utilization and minimize operational costs,proper QoS mechanism that can supply heterogeneous networks QoS assurance should be established.QoS mapping seems to be an effective solution,which can perform automatic translation of QoS classes between different networks,relieve the problem complexity and support QoS over heterogeneous networks.This paper surveys current horizontal QoS mapping strategies and architectures for heterogeneous networks,and introduces AQCM-ASM mapping scheme and FAbS model.Comparisons of different QoS mapping strategies and possible future research directions are given at the end of the paper.