A Novel Cross-Layer Vertical QoS Mapping Mechanism in Heterogeneous Networks

QoS parameter mapping is a key technology with respect to guaranteeing QoS of business in heterogeneous networks dynamically. This paper studies a method for guarantee necessary End-to-End QoS for user satisfaction, focusing on the problem of quality of service (QoS) mapping between layers in a cascade. Due to the dynamic mapping of parameters, the consistency between user and network is guaranteed. In this paper, we proposed a novel cross-layer QoS mapping mechanism on the basis of a multiple linear regression. The mechanism realizes the vertical mapping of QoS parameters between user-level and transport-level. Hence the QoS connection is constructed between networks to ensure the end-to-end QoS of business. The simulation results show that our mechanism can greatly improve the satisfaction of users without reducing the mean throughput.

I. Introduction

This problem of end-to-end QoS mapping in heterogeneous networks has received much attention during the last decade. Recently, wired and wireless heterogeneous networks have different QoS concerns and parameters. For instance, jitter and latency are important in web phones, while on-line video is more concerned with the packet loss ratio, which may affect the qality definition. Accordingly, in order to guarantee users' end-to-end QoS, QoS mapping becomes more and more important in the current heterogeneous networks environment.