基于策略的异构网络多层QoS管理体系研究

Research on Policy-Based Multi-Layer QoS Management Architecture over Heterogeneous Networks

目前通信网络呈现出多样化、冗余化、异构化的特点,在这样的网络环境下存在端到端的传输质量问题。在研究QoS管理和策略管理框架的基础上,介绍了常见的QoS管理框架和基于策略的QoS管理的概念及基本思想;分析了异构网络环境下端到端QoS保证面临的问题;提出了基于策略的异构网络互联多层QoS管理体系,通过在无线网络中设置无线域策略决策点和无线域策略执行点来支持新的独立的策略域,并着重对策略域层次间的协商交互过程进行了描述。

The existing communication network presents the characteristics of diversification,redundancy and isomerization.And in such network environment,the end-to-end QoS is facing great challenge.The basic principles of common QoS management framework are studied.The conception of policy-based QoS management is introduced.Moreover,the problems faced by end-to-end QoS in the heterogeneous networks environment are analyzed.At last,a policy-based multi-layer QoS management architecture is proposed,it introduces wireless PDP in the WLAN domain,and detailed process of interaction between multi-domain is described.